Author: "Loktionova, N" / Topic: fos: physical sciences - Searchworks@Jio Institute Digital Library Search Results

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59 results on '"Loktionova, N"'

1. Measurement of dijet electroproduction at small jet separation

Author: Adloff, C, Andreev, V, Andrieu, B, Anthonis, T, Arkadov, V, Astvatsatourov, A, Babaev, A, Bahr, J, Baranov, P, Barrelet, E, Bartel, W, Bate, P, Beglarian, A, Behnke, O, Beier, C, Belousov, A, Benisch, T, Berger, C, Berndt, T, Bizot, JC, Boudry, V, Braunschweig, W, Brisson, V, Broker, HB, Brown, DP, Bruckner, W, Bruncko, D, Burger, J, Busser, FW, Bunyatyan, A, Burrage, A, Buschhorn, G, Bystritskaya, L, Campbell, AJ, Cao, J, Caron, S, Clarke, D, Clerbaux, B, Collard, C, Contreras, JG, Coppens, YR, Coughlan, JA, Cousinou, MC, Cox, BE, Cozzika, G, Cvach, J, Dainton, JB, Dau, WD, Daum, K, Davidsson, M, Delcourt, B, Delerue, N, Demirchyan, R, De Roeck, A, De Wolf, EA, Diaconu, C, Dingfelder, J, Dixon, P, Dodonov, V, Dowell, JD, Droutskoi, A, Dubak, A, Duprel, C, Eckerlin, G, Eckstein, D, Efremenko, V, Egli, S, Eichler, R, Eisele, F, Eisenhandler, E, Ellerbrock, M, Elsen, E, Erdmann, M, Erdmann, W, Faulkner, PJW, Favart, L, Fedotov, A, Felst, R, Ferencei, J, Ferron, S, Fleischer, M, Fleming, YH, Flugge, G, Fomenko, A, Foresti, L, Formanek, J, Foster, JM, Franke, G, Gabathuler, E, Gabathuler, K, Garvey, J, Gassner, J, Gayler, J, Gerhards, R, Gerlich, C, Ghazaryan, S, Goerlich, L, Gogitidze, N, Goldberg, M, Grab, C, Grassler, H, Greenshaw, T, Grindhammer, G, Hadig, T, Haidt, D, Hajduk, L, Haynes, WJ, Heinemann, B, Heinzelmann, G, Henderson, RCW, Hengstmann, S, Henschel, H, Heremans, R, Herrera, G, Herynek, I, Hildebrandt, M, Hilgers, M, Hiller, KH, Hladky, J, Hoting, P, Hoffmann, D, Horisberger, R, Hurling, S, Ibbotson, M, Issever, C, Jacquet, M, Jaffre, M, Janauschek, L, Janssen, X, Jemanov, V, Jonsson, L, Johnson, C, Johnson, DP, Jones, MAS, Jung, H, Kastli, HK, Kant, D, Kapichine, M, Karlsson, M, Karschnick, O, Keil, F, Keller, N, Kennedy, J, Kenyon, IR, Kermiche, S, Kiesling, C, Kjellberg, P, Klein, M, Kleinwort, C, Kluge, T, Knies, G, Koblitz, B, Kolya, SD, Korbel, V, Kostka, P, Kotelnikov, SK, Koutouev, R, Koutov, A, Krehbiel, H, Kroseberg, J, Kruger, K, Kupper, A, Kuhr, T, Kurca, T, Lahmann, R, Lamb, D, Landon, MPJ, Lange, W, Lastovicka, T, Laycock, P, Lebailly, E, Lebedev, A, Leissner, B, Lemrani, R, Lendermann, V, Levonian, S, Lindstroem, M, List, B, Lobodzinska, E, Lobodzinski, B, Loginov, A, Loktionova, N, Lubimov, V, Luders, S, Luke, D, Lytkin, L, Mahlke-Kruger, H, Malden, N, Malinovski, E, Malinovski, I, Maracek, R, Marage, P, Marks, J, Marshall, R, Martyn, HU, Martyniak, J, Maxfield, SJ, Meer, D, Mehta, A, Meier, K, Meyer, AB, Meyer, H, Meyer, J, Meyer, PO, Mikocki, S, Milstead, D, Mkrtchyan, T, Mohr, R, Mohrdieck, S, Mondragon, MN, Moreau, F, Morozov, A, Morris, JV, Muller, K, Murin, P, Nagovizin, V, Naroska, B, Naumann, J, Naumann, T, Nellen, G, Newman, PR, Nicholls, TC, Niebergall, F, Niebuhr, C, Nix, O, Nowak, G, Olsson, JE, Ozerov, D, Panassik, V, Pascaud, C, Patel, GD, Peez, M, Perez, E, Phillips, JP, Pitzl, D, Poschl, R, Potachnikova, I, Povh, B, Rabbertz, K, Radel, G, Rauschenberger, J, Reimer, P, Reisert, B, Reyna, D, Risler, C, Rizvi, E, Robmann, P, Roosen, R, Rostovtsev, A, Rusakov, S, Rybicki, K, Sankey, DPC, Scheins, J, Schilling, FP, Schleper, P, Schmidt, D, Schmidt, S, Schmitt, S, Schneider, M, Schoeffel, L, Schoning, A, Schorner, T, Schroder, V, Schultz-Coulon, HC, Schwanenberger, C, Sedlak, K, Sefkow, F, Shekelyan, V, Sheviakov, I, Shtarkov, LN, Sirois, Y, Sloan, T, Smirnov, P, Soloviev, Y, South, D, Spaskov, V, Specka, A, Spitzer, H, Stamen, R, Stella, B, Stiewe, J, Straumann, U, Swart, M, Tasevsky, M, Tchernyshov, V, Tchetchelnitski, S, Thompson, G, Thompson, PD, Tobien, N, Traynor, D, Truol, P, Tsipolitis, G, Tsurin, I, Turnau, J, Turney, JE, Tzamariudaki, E, Udluft, S, Urban, M, Usik, A, Valkar, S, Valkarova, A, Vallee, C, Van Mechelen, P, Vassiliev, S, Vazdik, Y, Vichnevski, A, Wacker, K, Wallny, R, Waugh, B, Weber, G, Weber, M, Wegener, D, Werner, C, Werner, M, Werner, N, White, G, Wiesand, S, Wilksen, T, Winde, M, Winter, GG, Wissing, C, Wobisch, M, Wunsch, E, Wyatt, AC, Zacek, J, Zalesak, J, Zhang, Z, Zhokin, A, Zomer, F, Zsembery, J, zur Nedden, M, Collaboration, H, Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), H1, Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), H1 Collaboration, and Damoiseaux, Magali
Subjects: Physics, Quantum chromodynamics, Particle physics, Physics and Astronomy (miscellaneous), [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], 010308 nuclear & particles physics, Scattering, Monte Carlo method, High Energy Physics::Phenomenology, FOS: Physical sciences, Perturbative QCD, Parton, Jet (particle physics), 01 natural sciences, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), Matrix (mathematics), 0103 physical sciences, Range (statistics), [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, 010303 astronomy & astrophysics, Engineering (miscellaneous)
Abstract: Deep-inelastic scattering data in the range 150 < Q^2 < 35000 GeV^2 are used to investigate the minimum jet separation necessary to allow accurate description of the rate of dijet production using next-to-leading order perturbative QCD calculations. The required jet separation is found to be small, allowing about 1/3 of DIS data to be classified as dijet, as opposed to approximately 1/10 with more typical jet analyses. A number of precision measurements made using this dijet sample are well described by the calculations. The data are also described by the combination of leading order matrix elements and parton showers, as implemented in the QCD based Monte Carlo model RAPGAP., 18 pages, 4 figures, 4 tables
Published: 2016

2. Inelastic photoproduction of $J/\psi$ mesons at HERA

Author: Adloff, C., Andreev, V., Andrieu, B., Anthonis, T., Astvatsatourov, A., Babaev, A., Bahr, J., Baranov, P., Barrelet, E., Bartel, W., Baumgartner, S., Becker, J., Beckingham, M., Beglarian, A., Behnke, O., Beier, C., Belousov, A., Berger, C., Berndt, T., Bizot, J.C., Bohme, J., Boudry, V., Braunschweig, W., Brisson, V., Broker, H.B., Brown, D.P., Bruckner, W., Bruncko, D., Busser, F.W., Bunyatyan, A., Burrage, A., Buschhorn, G., Bystritskaya, L., Campbell, A.J., Caron, S., Cassol-Brunner, F., Clarke, D., Collard, C., Contreras, J.G., Coppens, Y.R., Coughlan, J.A., Cousinou, M.C., Cox, B.E., Cozzika, G., Cvach, J., Dainton, J.B., Dau, W.D., Daum, K., Davidsson, M., Delcourt, B., Delerue, N., Demirchyan, R., De Roeck, A., De Wolf, E.A., Diaconu, C., Dingfelder, J., Dixon, P., Dodonov, V., Dowell, J.D., Droutskoi, A., Dubak, A., Duprel, C., Eckerlin, G., Eckstein, D., Efremenko, V., Egli, S., Eichler, R., Eisele, F., Eisenhandler, E., Ellerbrock, M., Elsen, E., Erdmann, M., Erdmann, W., Faulkner, P.J.W., Favart, L., Fedotov, A., Felst, R., Ferencei, J., Ferron, S., Fleischer, M., Fleischmann, P., Fleming, Y.H., Flugge, G., Fomenko, A., Foresti, I., Formanek, J., Franke, G., Frising, G., Gabathuler, E., Gabathuler, K., Garvey, J., Gassner, J., Gayler, J., Gerhards, R., Gerlich, C., Ghazaryan, S., Goerlich, L., Gogitidze, N., Grab, C., Grabski, V., Grassler, H., Greenshaw, T., Grindhammer, G., Hadig, T., Haidt, D., Hajduk, L., Haller, J., Haynes, W.J., Heinemann, B., Heinzelmann, G., Henderson, R.C.W., Hengstmann, S., Henschel, H., Heremans, R., Herrera, G., Herynek, I., Hildebrandt, M., Hilgers, M., Hiller, K.H., Hladky, J., Hoting, P., Hoffmann, D., Horisberger, R., Hovhannisyan, A., Hurling, S., Ibbotson, M., Issever, C., Jacquet, M., Jaffre, M., Janauschek, L., Janssen, X., Jemanov, V., Jonsson, L., Johnson, C., Johnson, D.P., Jones, M.A.S., Jung, H., Kant, D., Kapichine, M., Karlsson, M., Karschnick, O., Keil, F., Keller, N., Kennedy, J., Kenyon, I.R., Kermiche, S., Kiesling, C., Kjellberg, P., Klein, M., Kleinwort, C., Kluge, T., Knies, G., Koblitz, B., Kolya, S.D., Korbel, V., Kostka, P., Kotelnikov, S.K., Koutouev, R., Koutov, A., Kroseberg, J., Kruger, K., Kuhr, T., Kurca, T., Lamb, D., Landon, M.P.J., Lange, W., Lastovicka, T., Laycock, P., Lebailly, E., Lebedev, A., Leiner, B., Lemrani, R., Lendermann, V., Levonian, S., Lindstroem, M., List, B., Lobodzinska, E., Lobodzinski, B., Loginov, A., Loktionova, N., Lubimov, V., Luders, S., Luke, D., Lytkin, L., Malden, N., Malinovski, E., Malinovski, I., Mangano, S., Maracek, R., Marage, P., Marks, J., Marshall, R., Martyn, H.U., Martyniak, J., Maxeld, S.J., Meer, D., Mehta, A., Meier, K., Meyer, A.B., Meyer, H., Meyer, J., Meyer, P.O., Mikocki, S., Milstead, D., Mohrdieck, S., Mondragon, M.N., Moreau, F., Morozov, A., Morris, J.V., Muller, K., Murn, P., Nagovizin, V., Naroska, B., Naumann, J., Naumann, T., Nellen, G., Newman, P.R., Niebergall, F., Niebuhr, C., Nix, O., Nowak, G., Nozicka, M., Olsson, J.E., Ozerov, D., Panassik, V., Pascaud, C., Patel, G.D., Peez, M., Perez, Emile, Petrukhin, A., Phillips, J.P., Pitzl, D., Poschl, R., Potachnikova, I., Povh, B., Radel, G., Rauschenberger, J., Reimer, P., Reisert, B., Risler, C., Rizvi, E., Robmann, P., Roosen, R., Rostovtsev, A., Rusakov, S., Rybicki, K., Samson, J., Sankey, D.P.C., Schatzel, S., Scheins, J., Schilling, F.P., Schleper, P., Schmidt, D., Schmidt, S., Schmitt, S., Schneider, M., Schoeffel, L., Schoning, A., Schorner, T., Schroder, V., Schultz-Coulon, H.C., Schwanenberger, C., Sedlak, K., Sefkow, F., Shekelyan, V., Sheviakov, I., Shtarkov, L.N., Sirois, Y., Sloan, T., Smirnov, P., Soloviev, Y., South, D., Spaskov, V., Specka, A., Spitzer, H., Stamen, R., Stella, B., Stiewe, J., Strauch, I., Straumann, U., Swart, M., Tchetchelnitski, S., Thompson, G., Thompson, P.D., Tomasz, F., Traynor, D., Truol, P., Tsipolitis, G., Tsurin, I., Turnau, J., Turney, J.E., Tzamariudaki, E., Udluft, S., Uraev, A., Urban, Martin, Usik, A., Valkar, S., Valkarova, A., Vallee, C., Van Mechelen, P., Vassiliev, S., Vazdik, Y., Vest, A., Vichnevski, A., Wacker, K., Wagner, J., Wallny, R., Waugh, B., Weber, G., Wegener, D., Werner, C., Werner, N., Wessels, M., White, G., Wiesand, S., Wilksen, T., Winde, M., Winter, G.G., Wissing, C., Wobisch, M., Woehrling, E.E., Wunsch, E., Wyatt, A.C., Zacek, J., Zalesak, J., Zhang, Zhiqing, Zhokin, A., Zomer, F., Zur Nedden, M., Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), H1, Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and H1 Collaboration
Subjects: Particle physics, Physics and Astronomy (miscellaneous), Octet, Meson, Proton, Nuclear Theory, FOS: Physical sciences, 01 natural sciences, 7. Clean energy, High Energy Physics - Experiment, law.invention, Luminosity, High Energy Physics - Experiment (hep-ex), law, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Nuclear Experiment, 010306 general physics, Collider, Engineering (miscellaneous), Quantum chromodynamics, Physics, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, HERA, Rest frame, High Energy Physics::Experiment
Abstract: An analysis of inelastic photoproduction of J/Psi mesons is presented using data collected at the ep collider HERA corresponding to an integrated luminosity of above 80pb-1. Differential and double differential cross sections are measured in a wide kinematic region: 60, Comment: 30 pages, 11 figures, 11 tables
Published: 2002

3. Inclusive photoproduction of neutral pions in the photon hemisphere at HERA

Author: Adloff, C, Andreev, V, Andrieu, B, Arkadov, V, Astvatsatourov, A, Ayyaz, I, Babaev, A, Bahr, J, Baranov, P, Barrelet, E, Bartel, W, Bassler, U, Bate, P, Beglarian, A, Behnke, O, Beier, C, Belousov, A, Benisch, T, Berger, C, Bernardi, G, Berndt, T, Bertrand-Coremans, G, Bizot, JC, Borras, K, Boudry, V, Braunschweig, W, Brisson, V, Broker, HB, Brown, DP, Bruckner, W, Bruel, P, Bruncko, D, Burger, J, Busser, FW, Bunyatyan, A, Burkhardt, H, Burrage, A, Buschhorn, G, Campbell, AJ, Cao, J, Carli, T, Caron, S, Chabert, E, Clarke, D, Clerbaux, B, Collard, C, Contreras, JG, Coughlan, JA, Cousinou, MC, Cox, BE, Cozzika, G, Cvach, J, Dainton, JB, Dau, WD, Daum, K, David, M, Davidsson, M, Delcourt, B, Delerue, N, Demirchyan, R, De Roeck, A, De Wolf, EA, Diaconu, C, Dixon, P, Dodonov, V, Donovan, KT, Dowell, JD, Droutskoi, A, Duprel, C, Ebert, J, Eckerlin, G, Eckstein, D, Efremenko, V, Egli, S, Eichler, R, Eisele, F, Eisenhandler, E, Ellerbrock, M, Elsen, E, Erdmann, M, Faulkner, PJW, Favart, L, Fedotov, A, Felst, R, Ferencei, J, Ferrarotto, F, Ferron, S, Fleischer, M, Flugge, G, Fomenko, A, Foresti, I, Formanek, J, Foster, JM, Franke, G, Gabathuler, E, Gabathuler, K, Garvey, J, Gassner, J, Gayler, J, Gerhards, R, Ghazaryan, S, Glazov, A, Goerlich, L, Gogitidze, N, Goldberg, M, Goodwin, C, Grab, C, Grassler, H, Greenshaw, T, Grindhammer, G, Hadig, T, Haidt, D, Hajduk, L, Haustein, V, Haynes, WJ, Heinemann, B, Heinzelmann, G, Henderson, RCW, Hengstmann, S, Henschel, H, Heremans, R, Herrera, G, Herynek, I, Hilgers, M, Hiller, KH, Hilton, CD, Hladky, J, Hoting, P, Hoffmann, D, Hoprich, W, Horisberger, R, Hurling, S, Ibbotson, M, Issever, C, Jacquet, M, Jaffre, M, Janauschek, L, Jansen, DM, Janssen, X, Jemanov, V, Jonsson, L, Johnson, DP, Jones, MAS, Jung, H, Kastli, HK, Kant, D, Kapichine, M, Karlsson, M, Karschnick, O, Kaufmann, O, Kausch, M, Keil, F, Keller, N, Kennedy, J, Kenyon, IR, Kermiche, S, Kiesling, C, Klein, M, Kleinwort, C, Knies, G, Koblitz, B, Kolanoski, H, Kolya, SD, Korbel, V, Kostka, P, Kotelnikov, SK, Krasny, MW, Krehbiel, H, Kroseberg, J, Krucker, D, Kruger, K, Kupper, A, Kuhr, T, Kurca, T, Kutuev, R, Lachnit, W, Lahmann, R, Lamb, D, Landon, MPJ, Lange, W, Lastovicka, T, Lebedev, A, Leissner, B, Lemaitre, V, Lemrani, R, Lendermann, V, Levonian, S, Lindstroem, M, Lobo, G, Lobodzinska, E, Lobodzinski, B, Loktionova, N, Lubimov, V, Luders, S, Luke, D, Lytkin, L, Magnussen, N, Mahlke-Kruger, H, Malden, N, Malinovski, E, Malinovski, I, Maracek, R, Marage, P, Marks, J, Marshall, R, Martyn, HU, Martyniak, J, Maxfield, SJ, Mehta, A, Meier, K, Merkel, P, Metlica, F, Meyer, A, Meyer, H, Meyer, J, Meyer, PO, Mikocki, S, Milstead, D, Mkrtchyan, T, Mohr, R, Mohrdieck, S, Mondragon, MN, Moreau, F, Morozov, A, Morris, JV, Muller, D, Muller, K, Murin, P, Nagovizin, V, Naroska, B, Naumann, J, Naumann, T, Negri, I, Nellen, G, Newman, PR, Nicholls, TC, Niebergall, F, Niebuhr, C, Nix, O, Nowak, G, Nunnemann, T, Olsson, JE, Ozerov, D, Panassik, V, Pascaud, C, Passaggio, S, Patel, GD, Perez, E, Phillips, JP, Pitzl, D, Poschl, R, Potachnikova, I, Povh, B, Rabbertz, K, Radel, G, Rauschenberger, J, Reimer, P, Reisert, B, Reyna, D, Riess, S, Rizvi, E, Robmann, P, Roosen, R, Rostovtsev, A, Royon, C, Rusakov, S, Rybicki, K, Sankey, DPC, Scheins, J, Schilling, FP, Schleif, S, Schleper, P, Schmidt, D, Schoeffel, L, Schoning, A, Schorner, T, Schroder, V, Schultz-Coulon, HC, Sedlak, K, Sefkow, F, Shekelyan, V, Sheviakov, I, Shtarkov, LN, Siegmon, G, Sievers, P, Sirois, Y, Sloan, T, Smirnov, P, Smith, M, Solochenko, V, Soloviev, Y, Spaskov, V, Specka, A, Spitzer, H, Stamen, R, Steinhart, J, Stella, B, Stellberger, A, Stiewe, J, Straumann, U, Struczinski, W, Sutton, JP, Swart, M, Tasevsky, M, Tchernyshov, V, Tchetchelnitski, S, Thompson, G, Thompson, PD, Tobien, N, Traynor, D, Truol, P, Tsipolitis, G, Turnau, J, Turney, JE, Tzamariudaki, E, Udluft, S, Usik, A, Valkar, S, Valkarova, A, Vallee, C, Van Mechelen, P, Vazdik, Y, von Dombrowski, S, Wacker, K, Wallny, R, Walter, T, Waugh, B, Weber, G, Weber, M, Wegener, D, Wegner, A, Wengler, T, Werner, M, White, G, Wiesand, S, Wilksen, T, Winde, M, Winter, GG, Wissing, C, Wobisch, M, Wollatz, H, Wunsch, E, Zacek, J, Zalesak, J, Zhang, Z, Zhokin, A, Zomer, F, Zsembery, J, zur Nedden, M, Collaboration, H, Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), H1, Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and H1 Collaboration
Subjects: Physics, Particle physics, Photon, Physics and Astronomy (miscellaneous), Meson, 010308 nuclear & particles physics, Monte Carlo method, FOS: Physical sciences, Context (language use), HERA, 01 natural sciences, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), symbols.namesake, Pion, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], symbols, Feynman diagram, High Energy Physics::Experiment, Rapidity, Nuclear Experiment, 010306 general physics, Engineering (miscellaneous)
Abstract: The inclusive cross section for the photoproduction of neutral pions has been measured as a function of the transverse momentum, rapidity, and Feynman x of the pizero mesons at an average photon--proton centre-of-mass energy of 208 GeV and for photon virtualities below Q^2=0.01 GeV^2. The pizero measurement extends the range covered by previous charged particle measurements at HERA by two units of rapidity in the photon direction down to a value of -5.5 in the gamma p centre-of-mass frame. The pizero transverse momentum distribution is well described over the whole measured range by a power law ansatz, while an exponential fit falls below the data at transverse momentum values above 1.5 GeV/c. Good agreement with the predictions of the Monte Carlo models PYTHIA and PHOJET is found. In the context of the PYTHIA model the data are inconsistent with large intrinsic transverse momentum values in the photon., 20 pages, 6 figures and 3 tables
Published: 2000

4. Search for Squarks in R-parity Violating Supersymmetry in ep Collisions at HERA

Author: Aaron, F. D., Alexa, C., Begzsuren, K., Krüger, K., Kutak, K., Landon, M. P. J., Lange, W., Lastovicka-Medin, G., Laycock, P., Lebedev, A., Lendermann, V., Levonian, S., Lipka, K., Belousov, A., List, B., List, J., Loktionova, N., Lopez-Fernandez, R., Lubimov, V., Makankine, A., Malinovski, E., Marage, P., Martyn, H.-U., Maxfield, S. J., Bizot, J. C., Mehta, A., Meyer, A. B., Meyer, H., Meyer, J., Mikocki, S., Milcewicz-Mika, I., Moreau, F., Morozov, A., Morris, J. V., Mozer, M. U., Boudry, V., Mudrinic, M., Müller, K., Naumann, Th., Newman, P. R., Niebuhr, C., Nikitin, D., Nowak, G., Nowak, K., Olsson, J. E., Osman, S., Bozovic-Jelisavcic, I., Ozerov, D., Pahl, P., Palichik, V., Panagoulias, I., Pandurovic, M., Papadopoulou, Th., Pascaud, C., Patel, G. D., Perez, E., Petrukhin, A., Bracinik, J., Picuric, I., Piec, S., Pirumov, H., Pitzl, D., Placakyte, R., Pokorny, B., Polifka, R., Povh, B., Radescu, V., Raicevi\'c, N., Brandt, G., Ravdandorj, T., Reimer, P., Rizvi, E., Robmann, P., Roosen, R., Rostovtsev, A., Rotaru, M., Ruiz Tabasco, J. E., Rusakov, S., Sálek, D., Brinkmann, M., Sankey, D. P. C., Sauter, M., Sauvan, E., Schmitt, S., Schœffel, L., Schöning, A., Schultz-Coulon, H.-C., Sefkow, F., Shtarkov, L. N., Shushkevich, S., Brisson, V., Sloan, T., Smiljanic, I., Soloviev, Y., Sopicki, P., South, D., Spaskov, V., Specka, A., Staykova, Z., Steder, M., Stella, B., Britzger, D., Stoicea, G., Straumann, U., Sunar, D., Sykora, T., Thompson, G., Thompson, P. D., Toll, T., Tran, T. H., Traynor, D., Truöl, P., Andreev, V., Bruncko, D., Tsakov, I., Tseepeldorj, B., Turnau, J., Urban, K., Valkárová, A., Vallée, C., Van Mechelen, P., Vazdik, Y., von den Driesch, M., Wegener, D., Bunyatyan, A., Wünsch, E., Zácek, J., Zálesák, J., Zhang, Z., Zhokin, A., Zohrabyan, H., Zomer, F., COLLABORATION, H1, Buschhorn, G., Bylinkin, A., Bystritskaya, L., Campbell, A. J., Cantun Avila, K. B., Ceccopieri, F., Cerny, K., Cerny, V., Backovic, S., Chekelian, V., Cholewa, A., Contreras, J. G., Coughlan, J. A., Cvach, J., Dainton, J. B., Daum, K., Delcourt, B., Delvax, J., De Wolf, E. A., Baghdasaryan, A., Diaconu, C., Dobre, M., Dodonov, V., Dossanov, A., Dubak, A., Eckerlin, G., Egli, S., Eliseev, A., Elsen, E., Favart, L., Baghdasaryan, S., Fedotov, A., Felst, R., Feltesse, J., Ferencei, J., Fischer, D.-J., Fleischer, M., Fomenko, A., Gabathuler, E., Gayler, J., Ghazaryan, S., Barrelet, E., Glazov, A., Goerlich, L., Gogitidze, N., Gouzevitch, M., Grab, C., Grebenyuk, A., Greenshaw, T., Grell, B. R., Grindhammer, G., Habib, S., Bartel, W., Haidt, D., Helebrant, C., Henderson, R. C. W., Hennekemper, E., Henschel, H., Herbst, M., Herrera, G., Hildebrandt, M., Hiller, K. H., Hoffmann, D., Behrend, O., Horisberger, R., Hreus, T., Huber, F., Jacquet, M., Janssen, X., Jönsson, L., Jung, A. W., Jung, H., Kapichine, M., Katzy, J., Belov, P., Kenyon, I. R., Kiesling, C., Klein, M., Kleinwort, C., Kluge, T., Knutsson, A., Kogler, R., Kostka, P., Kraemer, M., Kretzschmar, J., Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, H1, Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), H1 Collaboration, and H1 Collaboration (ukupan broj autora: 215)
Subjects: Particle physics, Physics and Astronomy (miscellaneous), FOS: Physical sciences, Elementary particle, 01 natural sciences, 7. Clean energy, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), R-parity, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Grand Unified Theory, ddc:530, 010306 general physics, Engineering (miscellaneous), Physics, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Yukawa potential, Superpartner, HERA, Supersymmetry, High Energy Physics::Experiment, Minimal Supersymmetric Standard Model
Abstract: A search for squarks in R-parity violating supersymmetry is performed in e^+- p collisions at HERA using the H1 detector. The full data sample taken at a centre-of-mass energy sqrt{s}=319 GeV is used for the analysis, corresponding to an integrated luminosity of 255 pb^-1 of e^+ p and 183 pb^-1 of e^- p collision data. The resonant production of squarks via a Yukawa coupling lambda' is considered, taking into account direct and indirect R-parity violating decay modes. Final states with jets and leptons are investigated. No evidence for squark production is found and mass dependent limits on lambda' are obtained in the framework of the Minimal Supersymmetric Standard Model and in the Minimal Supergravity Model. In the considered part of the parameter space, for a Yukawa coupling of electromagnetic strength lambda'= 0.3, squarks of all flavours are excluded up to masses of 275 GeV at 95% confidence level, with down-type squarks further excluded up to masses of 290 GeV., 31 pages, 11 figures, 1 table
Published: 2010

5. Measurement of the Diffractive Deep-Inelastic Scattering Cross Section with a Leading Proton at HERA

Author: Aaron, F. D., Alexa, C., Andreev, V., Backovic, S., Baghdasaryan, A., Barrelet, E., Bartel, W., Begzsuren, K., Belousov, A., Bizot, J. C., Boudry, V., Bozovic-Jelisavcic, I., Bracinik, J., Brandt, G., Brinkmann, M., Brisson, V., Britzger, D., Bruncko, D., Bunyatyan, A., Buschhorn, G., Bystritskaya, L., Campbell, A. J., Cantun Avila, K. B., Ceccopieri, F., Cerny, K., Cerny, V., Chekelian, V., Cholewa, A., Contreras, J. G., Coughlan, J. A., Cvach, J., Dainton, J. B., Daum, K., Deák, M., Delcourt, B., Delvax, J., Wolf, E. A., Diaconu, C., Dobre, M., Dodonov, V., Dossanov, A., Dubak, A., Eckerlin, G., Efremenko, V., Egli, S., Eliseev, A., Elsen, E., Favart, L., Fedotov, A., Felst, R., Feltesse, J., Ferencei, J., Fischer, D. -J, Fleischer, M., Fomenko, A., Gabathuler, E., Gayler, J., Ghazaryan, S., Glazov, A., Goerlich, L., Gogitidze, N., Gouzevitch, M., Grab, C., Grebenyuk, A., Timothy Greenshaw, Grell, B. R., Grindhammer, G., Habib, S., Haidt, D., Helebrant, C., Henderson, R. C. W., Hennekemper, E., Henschel, H., Herbst, M., Herrera, G., Hildebrandt, M., Hiller, K. H., Hoffmann, D., Horisberger, R., Hreus, T., Huber, F., Jacquet, M., Janssen, X., Jönsson, L., Jung, A. W., Jung, H., Kapichine, M., Katzy, J., Kenyon, I. R., Kiesling, C., Klein, M., Kleinwort, C., Kluge, T., Knutsson, A., Kogler, R., Kostka, P., Kraemer, M., Kretzschmar, J., Kropivnitskaya, A., Krüger, K., Kutak, K., Landon, M. P. J., Lange, W., Lastovicka-Medin, G., Laycock, P., Lebedev, A., Lendermann, V., Levonian, S., Lipka, K., List, B., List, J., Loktionova, N., Lopez-Fernandez, R., Lubimov, V., Makankine, A., Malinovski, E., Marage, P., Martyn, H. -U, Maxfield, S. J., Mehta, A., Meyer, A. B., Meyer, H., Meyer, J., Mikocki, S., Milcewicz-Mika, I., Moreau, F., Morozov, A., Morris, J. V., Mozer, M. U., Mudrinic, M., Müller, K., Naumann, Th, Newman, P. R., Niebuhr, C., Nikiforov, A., Nikitin, D., Nowak, G., Nowak, K., Olsson, J. E., Osman, S., Ozerov, D., Pahl, P., Palichik, V., Panagoulias, I., Pandurovic, M., Papadopoulou, Th, Pascaud, C., Patel, G. D., Perez, E., Petrukhin, A., Picuric, I., Piec, S., Pirumov, H., Pitzl, D., Placakyte, R., Pokorny, B., Polifka, R., Povh, B., Radescu, V., Raicevi C, N., Ravdandorj, T., Reimer, P., Rizvi, E., Robmann, P., Roosen, R., Rostovtsev, A., Rotaru, M., Ruiz Tabasco, J. E., Rusakov, S., Sálek, D., Sankey, D. P. C., Sauter, M., Sauvan, E., Schmitt, S., Schœffel, L., Schöning, A., Schultz-Coulon, H. -C, Sefkow, F., Shtarkov, L. N., Shushkevich, S., Sloan, T., Smiljanic, I., Soloviev, Y., Sopicki, P., South, D., Spaskov, V., Specka, A., Staykova, Z., Steder, M., Stella, B., Stoicea, G., Straumann, U., Sunar, D., Sykora, T., Thompson, G., Thompson, P. D., Toll, T., Tran, T. H., Traynor, D., Truöl, P., Tsakov, I., Tseepeldorj, B., Turnau, J., Urban, K., Valkárová, A., Vallée, C., Mechelen, P., Vargas Trevino, A., Vazdik, Y., Den Driesch, M., Wegener, D., Wünsch, E., Zácek, J., Zálesák, J., Zhang, Z., Zhokin, A., Zohrabyan, H., Zomer, F., Starita, Sabine, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, H1, Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), and Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)
Subjects: High Energy Physics - Experiment (hep-ex), [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], FOS: Physical sciences, High Energy Physics::Experiment, Nuclear Experiment, High Energy Physics - Experiment
Abstract: The cross section for the diffractive deep-inelastic scattering process ep -> e X p is measured, with the leading final state proton detected in the H1 Forward Proton Spectrometer. The data sample covers the range x_pom, 48 pages, 18 figures, 4 tables
Published: 2010

6. Events with an Isolated Lepton and Missing Transverse Momentum and Measurement of W Production at HERA

Author: Aaron, F. D., Abramowicz, H., Abt, I., Adamczyk, L., Adamus, M., Aldaya Martin, M., Alexa, C., Alimujiang, K., Andreev, V., Antonelli, S., Antonioli, P., Antonov, A., Antunovic, B., Arneodo, M., Aushev, V., Bachynska, O., Backovic, S., Baghdasaryan, A., Bamberger, A., Barakbæv, A. N., Barbagli, G., Bari, G., Barreiro, F., Barrelet, E., Bartel, W., Bartsch, D., Basile, M., Begzsuren, K., Behnke, O., Behr, J., Behrens, U., Bellagamba, L., Belousov, A., Bertolin, A., Bhadra, S., Bindi, M., Bizot, J. C., Blohm, C., Bold, T., Boos, E. G., Borodin, M., Borras, K., Boscherini, D., Bot, D., Boudry, V., Boutle, S. K., Bozovic-Jelisavcic, I., Bracinik, J., Brandt, G., Brinkmann, M., Brisson, V., Brock, I., Brownson, E., Brugnera, R., Brümmer, N., Bruncko, D., Bruni, A., Bruni, G., Brzozowska, B., Bunyatyan, A., Buschhorn, G., Bussey, P. J., Butterworth, J. M., Bylsma, B., Bystritskaya, L., Caldwell, A., Campbell, A. J., Cantun Avila, K. B., Capua, M., Carlin, R., Catterall, C. D., Cerny, K., Cerny, V., Chekanov, S., Chekelian, V., Cholewa, A., Chwastowski, J., Ciborowski, J., Ciesielski, R., Cifarelli, L., Cindolo, F., Contin, A., Contreras, J. G., Cooper-Sarkar, A. M., Coppola, N., Corradi, M., Corriveau, F., Costa, M., Coughlan, J. A., Cozzika, G., Cvach, J., D'Agostini, G., Dainton, J. B., Dal Corso, F., Daum, K., Deák, M., de Favereau, J., Delcourt, B., Del Degan, M., del Peso, J., Delvax, J., Dementiev, R. K., De Pasquale, S., Derrick, M., Devenish, R. C. E., De Wolf, E. A., Diaconu, C., Dobur, D., Dodonov, V., Dolgoshein, B. A., Dossanov, A., Doyle, A. T., Drugakov, V., Dubak, A., Durkin, L. S., Dusini, S., Eckerlin, G., Efremenko, V., Egli, S., Eisenberg, Y., Eliseev, A., Elsen, E., Ermolov, P. F., Eskreys, A., Falkiewicz, A., Fang, S., Favart, L., Fazio, S., Fedotov, A., Felst, R., Feltesse, J., Ferencei, J., Ferrando, J., Ferrero, M. I., Figiel, J., Fischer, D.-J., Fleischer, M., Fomenko, A., Forrest, M., Foster, B., Fourletov, S., Gabathuler, E., Galas, A., Gallo, E., Garfagnini, A., Gayler, J., Geiser, A., Ghazaryan, S., Gialas, I., Gladilin, L. K., Gladkov, D., Glasman, C., Glazov, A., Glushkov, I., Goerlich, L., Gogitidze, N., Golubkov, Yu. A., Göttlicher, P., Gouzevitch, M., Grab, C., Grabowska-Bold, I., Grebenyuk, J., Greenshaw, T., Gregor, I., Grell, B. R., Grigorescu, G., Grindhammer, G., Grzelak, G., Gwenlan, C., Haas, T., Habib, S., Haidt, D., Hain, W., Hamatsu, R., Hart, J. C., Hartmann, H., Hartner, G., Helebrant, C., Henderson, R. C. W., Hennekemper, E., Henschel, H., Herbst, M., Herrera, G., Hildebrandt, M., Hilger, E., Hiller, K. H., Hochman, D., Hoffmann, D., Holm, U., Hori, R., Horisberger, R., Horton, K., Hreus, T., Hüttmann, A., Iacobucci, G., Ibrahim, Z. A., Iga, Y., Ingbir, R., Ishitsuka, M., Jacquet, M., Jakob, H.-P., Janssen, X., Januschek, F., Jimenez, M., Jones, T. W., Jönsson, L., Jung, A. W., Jung, H., Jüngst, M., Kadenko, I., Kahle, B., Kamaluddin, B., Kananov, S., Kanno, T., Kapichine, M., Karshon, U., Karstens, F., Katkov, I. I., Katzy, J., Kaur, M., Kaur, P., Kenyon, I. R., Keramidas, A., Khein, L. A., Kiesling, C., Kim, J. Y., Kisielewska, D., Kitamura, S., Klanner, R., Klein, M., Klein, U., Kleinwort, C., Kluge, T., Knutsson, A., Koffeman, E., Kogler, R., Kollar, D., Kooijman, P., Korol, Ie., Korzhavina, I. A., Kostka, P., Kota\'nski, A., Kötz, U., Kowalski, H., Kraemer, M., Krastev, K., Kretzschmar, J., Kropivnitskaya, A., Krüger, K., Kulinski, P., Kuprash, O., Kutak, K., Kuze, M., Kuzmin, V. A., Landon, M. P. J., Lange, W., Lastovicka-Medin, G., Laycock, P., Lebedev, A., Lee, A., Leibenguth, G., Lendermann, V., Levchenko, B. B., Levonian, S., Levy, A., Li, G., Libov, V., Limentani, S., Ling, T. Y., Lipka, K., Liptaj, A., Lisovyi, M., List, B., List, J., Lobodzinska, E., Lohmann, W., Löhr, B., Lohrmann, E., Loizides, J. H., Loktionova, N., Long, K. R., Longhin, A., Lontkovskyi, D., Lopez-Fernandez, R., Lubimov, V., Łukasik, J., Lukina, O. Yu., Łuzniak, P., Maeda, J., Magill, S., Makankine, A., Makarenko, I., Malinovski, E., Malka, J., Mankel, R., Marage, P., Margotti, A., Marini, G., Marti, Ll., Martin, J. F., Martyn, H.-U., Mastroberardino, A., Matsumoto, T., Mattingly, M. C. K., Maxfield, S. J., Mehta, A., Melzer-Pellmann, I.-A., Meyer, A. B., Meyer, H., Meyer, J., Miglioranzi, S., Mikocki, S., Milcewicz-Mika, I., Mohamad Idris, F., Monaco, V., Montanari, A., Moreau, F., Morozov, A., Morris, J. D., Morris, J. V., Mozer, M. U., Mudrinic, M., Müller, K., Murín, P., Musgrave, B., Nagano, K., Namsoo, T., Nania, R., Naumann, Th., Newman, P. R., Nicholass, D., Niebuhr, C., Nigro, A., Nikiforov, A., Nikitin, A., Ning, Y., Noor, U., Notz, D., Nowak, G., Nowak, K., Nowak, R. J., Nozicka, M., Nuncio-Quiroz, A. E., Oh, B. Y., Okazaki, N., Oliver, K., Olivier, B., Olkiewicz, K., Olsson, J. E., Onishchuk, Yu., Osman, S., Ota, O., Ozerov, D., Palichik, V., Panagoulias, I., Pandurovic, M., Papadopoulou, Th., Papageorgiu, K., Parenti, A., Pascaud, C., Patel, G. D., Paul, E., Pawlak, J. M., Pawlik, B., Pejchal, O., Pelfer, P. G., Pellegrino, A., Perez, E., Perlanski, W., Perrey, H., Petrukhin, A., Picuric, I., Piec, S., Piotrzkowski, K., Pitzl, D., Placakythe, R., Plucinski, P., Pokorny, B., Pokrovskiy, N. S., Polifka, R., Polini, A., Povh, B., Proskuryakov, A. S., Przybycién, M., Radescu, V., Rahmat, A. J., Raicevic, N., Raspiareza, A., Raval, A., Ravdandorj, T., Reeder, D. D., Reimer, P., Reisert, B., Ren, Z., Repond, J., Ri, Y. D., Rizvi, E., Robertson, A., Robmann, P., Roland, B., Roloff, P., Ron, E., Roosen, R., Rostovtsev, A., Rotaru, M., Rubinsky, I., Ruiz Tabasco, J. E., Rurikova, Z., Rusakov, S., Ruspa, M., Sacchi, R., Sálek, D., Salii, A., Samson, U., Sankey, D. P. C., Sartorelli, G., Sauter, M., Sauvan, E., Savin, A. A., Saxon, D. H., Schioppa, M., Schlenstedt, S., Schleper, P., Schmidke, W. B., Schmitt, S., Schneekloth, U., Schœffel, L., Schönberg, V., Schöning, A., Schörner-Sadenius, T., Schultz-Coulon, H.-C., Schwartz, J., Sciulli, F., Sefkow, F., Shaw-West, R. N., Shcheglova, L. M., Shehzadi, R., Shimizu, S., Shtarkov, L. N., Shushkevich, S., Singh, I., Skillicorn, I. O., Sloan, T., Słominski, W., Smiljanic, I., Smith, W. H., Sola, V., Solano, A., Soloviev, Y., Son, D., Sopicki, P., Sorokin, Iu., Sosnovtsev, V., South, D., Spaskov, V., Specka, A., Spiridonov, A., Stadie, H., Stanco, L., Staykova, Z., Steder, M., Stella, B., Stern, A., Stewart, T. P., Stifutkin, A., Stoicea, G., Stopa, P., Straumann, U., Suchkov, S., Sunar, D., Susinno, G., Suszycki, L., Sykora, T., Sztuk, J., Szuba, D., Szuba, J., Tapper, A. D., Tassi, E., Tchoulakov, V., Terrón, J., Theedt, T., Thompson, G., Thompson, P. D., Tiecke, H., Tokushuku, K., Toll, T., Tomasz, F., Tomaszewska, J., Tran, T. H., Traynor, D., Trinh, T. N., Truöl, P., Tsakov, I., Tseepeldorj, B., Tsurugai, T., Turcato, M., Turnau, J., Tymieniecka, T., Urban, K., Uribe-Estrada, C., Valkárová, A., Vallée, C., Van Mechelen, P., Vargas Trevino, A., Vazdik, Y., Vázquez, M., Verbytskyi, A., Viazlo, V., Vinokurova, S., Vlasov, N. N., Volchinski, V., Volynets, O., von den Driesch, M., Walczak, R., Wan Abdullah, W. A. T., Wegener, D., Whitmore, J. J., Whyte, J., Wiggers, L., Wing, M., Wissing, Ch., Wlasenko, M., Wolf, G., Wolfe, H., Wrona, K., Wünsch, E., Yagües-Molina, A. G., Yamada, S., Yamazaki, Y., Yoshida, R., Youngman, C., Zácek, J., Zálesák, J., Zarnecki, A. F., Zawiejski, L., Zeniaev, O., Zeuner, W., Zhang, Z., Zhautykov, B. O., Zhokin, A., Zhou, C., Zichichi, A., Zimmermann, T., Zohrabyan, H., Zolko, M., Zomer, F., Zotkin, D. S., Zus, R., Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), H1, ZEUS, F.D. AARON, H. ABRAMOWICZ, I. ABT, L. ADAMCZYK, M. ADAMUS, M. ALDAYA MARTIN, C. ALEXA, V. ANDREEV, S. ANTONELLI, P. ANTONIOLI, A. ANTONOV, B. ANTUNOVIC, M. ARNEODO, V. AUSHEV, O. BACHYNSKA, S. BACKOVIC, A. BAGHDASARYAN, A. BAMBERGER, A.N. BARAKBAEV, G. BARBAGLI, G. BARI, F. BARREIRO, E. BARRELET, W. BARTEL, D. BARTSCH, M. BASILE, K. BEGZSUREN, O. BEHNKE, J. BEHR, U. BEHRENS, L. BELLAGAMBA, A. BELOUSOV, A. BERTOLIN, S. BHADRA, M. BINDI, J.C. BIZOT, C. BLOHM, T. BOLD, E.G. BOOS, M. BORODIN, K. BORRAS, D. BOSCHERINI, D. BOT, V. BOUDRY, S.K. BOUTLE, I. BOZOVIC-JELISAVCIC, J. BRACINIK, G. BRANDT, M. BRINKMANN, V. BRISSON, I. BROCK, E. BROWNSON, R. BRUGNERA, N. BRUMMER, D. BRUNCKO, A. BRUNI, G. BRUNI, B. BRZOZOWSKA, A. BUNYATYAN, G. BUSCHHORN, P.J. BUSSEY, J.M. BUTTERWORTH, B. BYLSMA, L. BYSTRITSKAYA, A. CALDWELL, A.J. CAMPBELL, K.B. CANTUN AVILA, M. CAPUA, R. CARLIN, C.D. CATTERALL, K. CERNY, V. CERNY, S. CHEKANOV, V. CHEKELIAN, A. CHOLEWA, J. CHWASTOWSKI, J. CIBOROWSKI, R. CIESIELSKI, L. CIFARELLI, F. CINDOLO, A. CONTIN, J.G. CONTRERAS, A.M. COOPER-SARKAR, N. COPPOLA, M. CORRADI, F. CORRIVEAU, M. COSTA, J.A. COUGHLAN, G. COZZIKA, J. CVACH, G. D'AGOSTINI, J.B. DAINTON, F. DAL CORSO, K. DAUM, M. DEAK, J. DE FAVEREAU, B. DELCOURT, M. DEL DEGAN, J. DEL PESO, J. DELVAX, R.K. DEMENTIEV, S. DE PASQUALE, M. DERRICK, R.C.E. DEVENISH, E.A. DE WOLF, C. DIACONU, D. DOBUR, V. DODONOV, B.A. DOLGOSHEIN, A. DOSSANOV, A.T. DOYLE, V. DRUGAKOV, A. DUBAK, L.S. DURKIN, S. DUSINI, G. ECKERLIN, V. EFREMENKO, S. EGLI, Y. EISENBERG, A. ELISEEV, E. ELSEN, P.F. ERMOLOV, A. ESKREYS, A. FALKIEWICZ, S. FANG, L. FAVART, S. FAZIO, A. FEDOTOV, R. FELST, J. FELTESSE, J. FERENCEI, J. FERRANDO, M.I. FERRERO, J. FIGIEL, D.J. FISCHER, M. FLEISCHER, A. FOMENKO, M. FORREST, B. FOSTER, S. FOURLETOV, E. GABATHULER, A. GALAS, E. GALLO, A. GARFAGNINI, J. GAYLER, A. GEISER, S. GHAZARYAN, I. GIALAS, L.K. GLADILIN, D. GLADKOV, C. GLASMAN, A. GLAZOV, I. GLUSHKOV, L. GOERLICH, N. GOGITIDZE, YU.A. GOLUBKOV, P. GOTTLICHER, M. GOUZEVITCH, C. GRAB, I. GRABOWSKA-BOLD, J. GREBENYUK, T. GREENSHAW, I. GREGOR, B.R. GRELL, G. GRIGORESCU, G. GRINDHAMMER, G. GRZELAK, C. GWENLAN, T. HAAS, S. HABIB, D. HAIDT, W. HAIN, R. HAMATSU, J.C. HART, H. HARTMANN, G. HARTNER, C. HELEBRANT, R.C.W. HENDERSON, E. HENNEKEMPER, H. HENSCHEL, M. HERBST, G. HERRERA, M. HILDEBRANDT, E. HILGER, K.H. HILLER, D. HOCHMAN, D. HOFFMANN, U. HOLM, R. HORI, R. HORISBERGER, K. HORTON, T. HREUS, A. HUTTMANN, G. IACOBUCCI, Z.A. IBRAHIM, Y. IGA, R. INGBIR, M. ISHITSUKA, M. JACQUET, H.P. JAKOB, X. JANSSEN, F. JANUSCHEK, M. JIMENEZ, T.W. JONES, L. JONSSON, A.W. JUNG, H. JUNG, M. JUNGST, I. KADENKO, B. KAHLE, B. KAMALUDDIN, S. KANANOV, T. KANNO, M. KAPICHINE, U. KARSHON, F. KARSTENS, I.I. KATKOV, J. KATZY, M. KAUR, P. KAUR, I.R. KENYON, A. KERAMIDAS, L.A. KHEIN, C. KIESLING, J.Y. KIM, D. KISIELEWSKA, S. KITAMURA, R. KLANNER, M. KLEIN, U. KLEIN, C. KLEINWORT, T. KLUGE, A. KNUTSSON, E. KOFFEMAN, R. KOGLER, D. KOLLAR, P. KOOIJMAN, IE. KOROL, I.A. KORZHAVINA, P. KOSTKA, A. KOTANSKI, U. KOTZ, H. KOWALSKI, M. KRAEMER, K. KRASTEV, J. KRETZSCHMAR, A. KROPIVNITSKAYA, K. KRUGER, P. KULINSKI, O. KUPRASH, K. KUTAK, M. KUZE, V.A. KUZMIN, M.P.J. LANDON, W. LANGE, G. LASTOVICKA-MEDIN, P. LAYCOCK, A. LEBEDEV, A. LEE, G. LEIBENGUTH, V. LENDERMANN, B.B. LEVCHENKO, S. LEVONIAN, A. LEVY, G. LI, V. LIBOV, S. LIMENTANI, T.Y. LING, K. LIPKA, A. LIPTAJ, M. LISOVYI, B. LIST, J. LIST, E. LOBODZINSKA, W. LOHMANN, B. LOHR, E. LOHRMANN, J.H. LOIZIDES, N. LOKTIONOVA, K.R. LONG, A. LONGHIN, D. LONTKOVSKYI, R. LOPEZ-FERNANDEZ, V. LUBIMOV, J. LUKASIK, O.YU. LUKINA, P. LUZNIAK, J. MAEDA, S. MAGILL, A. MAKANKINE, I. MAKARENKO, E. MALINOVSKI, J. MALKA, R. MANKEL, P. MARAGE, A. MARGOTTI, G. MARINI, LL. MARTI, J.F. MARTIN, H.U. MARTYN, A. MASTROBERARDINO, T. MATSUMOTO, M.C.K. MATTINGLY, S.J. MAXFIELD, A. MEHTA, I.A. MELZER-PELLMANN, A.B. MEYER, H. MEYER, J. MEYER, S. MIGLIORANZI, S. MIKOCKI, I. MILCEWICZ-MIKA, F. MOHAMAD IDRIS, V. MONACO, A. MONTANARI, F. MOREAU, A. MOROZOV, J.D. MORRIS, J.V. MORRIS, M.U. MOZER, M. MUDRINIC, K. MULLER, P. MURIN, B. MUSGRAVE, K. NAGANO, T. NAMSOO, R. NANIA, TH. NAUMANN, P.R. NEWMAN, D. NICHOLASS, C. NIEBUHR, A. NIGRO, A. NIKIFOROV, D. NIKITIN, Y. NING, U. NOOR, D. NOTZ, G. NOWAK, K. NOWAK, R.J. NOWAK, M. NOZICKA, A.E. NUNCIO-QUIROZ, B.Y. OH, N. OKAZAKI, K. OLIVER, B. OLIVIER, K. OLKIEWICZ, J.E. OLSSON, YU. ONISHCHUK, S. OSMAN, O. OTA, D. OZEROV, V. PALICHIK, I. PANAGOULIAS, M. PANDUROVIC, TH. PAPADOPOULOU, K. PAPAGEORGIU, A. PARENTI, C. PASCAUD, G.D. PATEL, E. PAUL, J.M. PAWLAK, B. PAWLIK, O. PEJCHAL, P.G. PELFER, A. PELLEGRINO, E. PEREZ, W. PERLANSKI, H. PERREY, A. PETRUKHIN, I. PICURIC, S. PIEC, K. PIOTRZKOWSKI, D. PITZL, R. PLACAKYTE, P. PLUCINSKI, B. POKORNY, N.S. POKROVSKIY, R. POLIFKA, A. POLINI, B. POVH, A.S. PROSKURYAKOV, M. PRZYBYCIEN, V. RADESCU, A.J. RAHMAT, N. RAICEVIC, A. RASPIAREZA, A. RAVAL, T. RAVDANDORJ, D.D. REEDER, P. REIMER, B. REISERT, Z. REN, J. REPOND, Y.D. RI, E. RIZVI, A. ROBERTSON, P. ROBMANN, B. ROLAND, P. ROLOFF, E. RON, R. ROOSEN, A. ROSTOVTSEV, M. ROTARU, I. RUBINSKY, J.E. RUIZ TABASCO, Z. RURIKOVA, S. RUSAKOV, M. RUSPA, R. SACCHI, D. SALEK, A. SALII, U. SAMSON, D.P.C. SANKEY, G. SARTORELLI, M. SAUTER, E. SAUVAN, A.A. SAVIN, D.H. SAXON, M. SCHIOPPA, S. SCHLENSTEDT, P. SCHLEPER, W.B. SCHMIDKE, S. SCHMITT, U. SCHNEEKLOTH, L. SCHOEFFEL, V. SCHONBERG, A. SCHONING, T. SCHORNER-SADENIUS, H.C. SCHULTZ-COULON, J. SCHWARTZ, F. SCIULLI, F. SEFKOW, R.N. SHAW-WEST, L.M. SHCHEGLOVA, R. SHEHZADI, S. SHIMIZU, L.N. SHTARKOV, S. SHUSHKEVICH, I. SINGH, I.O. SKILLICORN, T. SLOAN, W. SLOMINSKI, I. SMILJANIC, W.H. SMITH, V. SOLA, A. SOLANO, Y. SOLOVIEV, D. SON, P. SOPICKI, IU. SOROKIN, V. SOSNOVTSEV, D. SOUTH, V. SPASKOV, A. SPECKA, A. SPIRIDONOV, H. STADIE, L. STANCO, Z. STAYKOVA, M. STEDER, B. STELLA, A. STERN, T.P. STEWART, A. STIFUTKIN, G. STOICEA, P. STOPA, U. STRAUMANN, S. SUCHKOV, D. SUNAR, G. SUSINNO, L. SUSZYCKI, T. SYKORA, J. SZTUK, D. SZUBA, J. SZUBA, A.D. TAPPER, E. TASSI, V. TCHOULAKOV, J. TERRON, T. THEEDT, G. THOMPSON, P.D. THOMPSON, H. TIECKE, K. TOKUSHUKU, T. TOLL, F. TOMASZ, J. TOMASZEWSKA, T.H. TRAN, D. TRAYNOR, T.N. TRINH, P. TRUOL, I. TSAKOV, B. TSEEPELDORJ, T. TSURUGAI, M. TURCATO, J. TURNAU, T. TYMIENIECKA, K. URBAN, C. URIBE-ESTRADA, A. VALKAROVA, C. VALLEE, P. VAN MECHELEN, A. VARGAS TREVINO, Y. VAZDIK, M. VAZQUEZ, A. VERBYTSKYI, V. VIAZLO, S. VINOKUROVA, N.N. VLASOV, V. VOLCHINSKI, O. VOLYNETS, M. VON DEN DRIESCH, R. WALCZAK, W.A.T. WAN ABDULLAH, D. WEGENER, J.J. WHITMORE, J. WHYTE, L. WIGGERS, M. WING, CH. WISSING, M. WLASENKO, G. WOLF, H. WOLFE, K. WRONA, E. WUNSCH, A.G. YAGUES-MOLINA, S. YAMADA, Y. YAMAZAKI, R. YOSHIDA, C. YOUNGMAN, J. ZACEK, J. ZALESAK, A.F. ZARNECKI, L. ZAWIEJSKI, O. ZENAIEV, W. ZEUNER, Z. ZHANG, B.O. ZHAUTYKOV, A. ZHOKIN, C. ZHOU, A. ZICHICHI, T. ZIMMERMANN, H. ZOHRABYAN, M. ZOLKO, F. ZOMER, D.S. ZOTKIN, R. ZUS, Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), ZEUS Collaboration (ukupan broj autora: 548), Precision Frontier, and Zeus (IHEF, IoP, FNWI)
Subjects: Particle physics, Nuclear and High Energy Physics, HERA, Hadron, Lepton-Nucleon Scattering, FOS: Physical sciences, Electron, Astrophysics::Cosmology and Extragalactic Astrophysics, 7. Clean energy, 01 natural sciences, High Energy Physics - Experiment, Standard Model, High Energy Physics - Experiment (hep-ex), High Energy Physics, ZEUS Collaboration, EP COLLISIONS, SEARCH, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], ddc:530, CALORIMETER, 010306 general physics, Nuclear Experiment, Physics, BOSON PRODUCTION, Muon, ZEUS (particle detector), Luminosity (scattering theory), 010308 nuclear & particles physics, High Energy Physics::Phenomenology, HIGH-ENERGY LEPTON, High Energy Physics::Experiment, HADRON-COLLISIONS, Particle Physics - Experiment, Lepton
Abstract: A search for events containing an isolated electron or muon and missing transverse momentum produced in ep collisions is performed with the H1 and ZEUS detectors at HERA. The data were taken in the period 1994-2007 and correspond to an integrated luminosity of 0.98 fb^-1. The observed event yields are in good overall agreement with the Standard Model prediction, which is dominated by single W production. In the e+p data, at large hadronic transverse momentum PtX >25 GeV, a total of 23 events are observed compared to a prediction of 14.0 \pm 1.9. The total single W boson production cross section is measured as 1.06 \pm 0.16 (stat.) \pm 0.07 (sys) pb, in agreement with an SM expectation of 1.26 \pm 0.19 pb., 19 pages, 3 figures, v2 updated to correspond to Journal version
Published: 2010

7. Diffractive Electroproduction of rho and phi Mesons at HERA

Author: Aaron, F. D., Aldaya Martin, M., Alexa, C., Alimujiang, K., Andreev, V., Antunovic, B., Asmone, A., Backovic, S., Baghdasaryan, A., Barrelet, E., Bartel, W., Begzsuren, K., Belousov, A., Bizot, J. C., Boudry, V., Bozovic-Jelisavcic, I., Bracinik, J., Brandt, G., Brinkmann, M., Brisson, V., Bruncko, D., Bunyatyan, A., Buschhorn, G., Bystritskaya, L., Campbell, A. J., Cantun Avila, K. B., Cassol-Brunner, F., Cerny, K., Cerny, V., Chekelian, V., Cholewa, A., Contreras, J. G., Coughlan, J. A., Cozzika, G., Cvach, J., Dainton, J. B., Daum, K., Deák, M., de Boer, Y., Delcourt, B., Del Degan, M., Delvax, J., De Wolf, E. A., Diaconu, C., Dodonov, V., Dossanov, A., Dubak, A., Eckerlin, G., Efremenko, V., Egli, S., Eliseev, A., Elsen, E., Falkiewicz, A., Favart, L., Fedotov, A., Felst, R., Feltesse, J., Ferencei, J., Fischer, D.-J., Fleischer, M., Fomenko, A., Gabathuler, E., Gayler, J., Ghazaryan, S., Glazov, A., Glushkov, I., Goerlich, L., Gogitidze, N., Gouzevitch, M., Grab, C., Greenshaw, T., Grell, B. R., Grindhammer, G., Habib, S., Haidt, D., Helebrant, C., Henderson, R. C. W., Hennekemper, E., Henschel, H., Herbst, M., Herrera, G., Hildebrandt, M., Hiller, K. H., Hoffmann, D., Horisberger, R., Hreus, T., Jacquet, M., Janssen, M. E., Janssen, X., Jönsson, L., Jung, A. W., Jung, H., Kapichine, M., Katzy, J., Kenyon, I. R., Kiesling, C., Klein, M., Kleinwort, C., Kluge, T., Knutsson, A., Kogler, R., Kostka, P., Kraemer, M., Krastev, K., Kretzschmar, J., Kropivnitskaya, A., Krüger, K., Kutak, K., Landon, M. P. J., Lange, W., Lastovicka-Medin, G., Laycock, P., Lebedev, A., Leibenguth, G., Lendermann, V., Levonian, S., Li, G., Lipka, K., Liptaj, A., List, B., List, J., Loktionova, N., Lopez-Fernandez, R., Lubimov, V., Lytkin, L., Makankine, A., Malinovski, E., Marage, P., Marti, Ll., Martyn, H.-U., Maxfield, S. J., Mehta, A., Meyer, A. B., Meyer, H., Meyer, J., Michels, V., Mikocki, S., Milcewicz-Mika, I., Moreau, F., Morozov, A., Morris, J. V., Mozer, M. U., Mudrinic, M., Müller, K., Murín, P., Naumann, Th., Newman, P. R., Niebuhr, C., Nikiforov, A., Nowak, G., Nowak, K., Nozicka, M., Olivier, B., Olsson, J. E., Osman, S., Ozerov, D., Palichik, V., Panagoulias, I., Pandurovic, M., Papadopoulou, Th., Pascaud, C., Patel, G. D., Pejchal, O., Perez, E., Petrukhin, A., Picuric, I., Piec, S., Pitzl, D., Placakyte, R., Pokorny, B., Polifka, R., Povh, B., Preda, T., Radescu, V., Rahmat, A. J., Raicevic, N., Raspiareza, A., Ravdandorj, T., Reimer, P., Rizvi, E., Robmann, P., Roland, B., Roosen, R., Rostovtsev, A., Rotaru, M., Ruiz Tabasco, J. E., Rurikova, Z., Rusakov, S., Sálek, D., Sankey, D. P. C., Sauter, M., Sauvan, E., Schmitt, S., Schoeffel, L., Schöning, A., Schultz-Coulon, H.-C., Sefkow, F., Shaw-West, R. N., Shtarkov, L. N., Shushkevich, S., Sloan, T., Smiljanic, I., Soloviev, Y., Sopicki, P., South, D., Spaskov, V., Specka, A., Staykova, Z., Steder, M., Stella, B., Stoicea, G., Straumann, U., Sunar, D., Sykora, T., Tchoulakov, V., Thompson, G., Thompson, P. D., Toll, T., Tomasz, F., Tran, T. H., Traynor, D., Trinh, T. N., Truöl, P., Tsakov, I., Tseepeldorj, B., Turnau, J., Urban, K., Valkárová, A., Vallée, C., Van Mechelen, P., Vargas Trevino, A., Vazdik, Y., Vinokurova, S., Volchinski, V., von den Driesch, M., Wegener, D., Wissing, Ch., Wünsch, E., Zácek, J., Zálesák, J., Zhang, Z., Zhokin, A., Zimmermann, T., Zohrabyan, H., Zomer, F., Zus, R., Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, H1, H1 Collaboration, Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), and H1 Collaboration (ukupan broj autora: 247)
Subjects: Nuclear and High Energy Physics, Particle physics, Proton, Meson, Hadron, Nuclear Theory, Lepton-Nucleon Scattering, FOS: Physical sciences, Elementary particle, Parton, 7. Clean energy, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], ddc:530, 010306 general physics, Nuclear Experiment, Quantum chromodynamics, Physics, 010308 nuclear & particles physics, HERA, Gluon, Physique des particules élémentaires, High Energy Physics::Experiment
Abstract: Diffractive electroproduction of ρ and φ mesons is measured at HERA with the H1 detector in the elastic and proton dissociative channels. The data correspond to an integrated luminosity of 51 pb -1. About 10500 ρ and 2000 φ events are analysed in the kinematic range of squared photon virtuality 2.5 ≤Q 2 ≤60 GeV 2, photon-proton centre of mass energy 35 ≤W ≤180 GeV and squared four-momentum transfer to the proton, 0, SCOPUS: ar.j, info:eu-repo/semantics/published
Published: 2009

8. Deeply Virtual Compton Scattering and its Beam Charge Asymmetry in e^\pm p Collisions at HERA

Author: Aaron, F.D., Martin, M. Aldaya, Alexa, C., Alimujiang, K., Andreev, V., Antunovic, B., Backovic, S., Baghdasaryan, A., Barrelet, E., Bartel, W., Begzsuren, K., Belousov, A., Bizot, J.C., Boudry, V., Bozovic-Jelisavcic, I., Bracinik, J., Brandt, G., Brinkmann, M., Brisson, V., Bruncko, D., Bunyatyan, A., Buschhorn, G., Bystritskaya, L., Campbell, A.J., Cantun Avila, K.B., Cerny, K., Cerny, V., Chekelian, V., Cholewa, A., Contreras, J.G., Coughlan, J.A., Cozzika, G., Cvach, J., Dainton, J.B., Daum, K., Deák, M., de Boer, Y., Delcourt, B., Del Degan, M., Delvax, J., De Wolf, E.A., Diaconu, C., Dodonov, V., Dossanov, A., Dubak, A., Eckerlin, G., Efremenko, V., Egli, S., Eliseev, A., Elsen, E., Falkiewicz, A., Favart, L., Fedotov, A., Felst, R., Feltesse, J., Ferencei, J., Fischer, D.-J., Fleischer, M., Fomenko, A., Gabathuler, E., Gayler, J., Ghazaryan, S., Glazov, A., Glushkov, I., Goerlich, L., Gogitidze, N., Gouzevitch, M., Grab, C., Greenshaw, T., Grell, B.R., Grindhammer, G., Habib, S., Haidt, D., Helebrant, C., Henderson, R.C.W., Hennekemper, E., Henschel, H., Herbst, M., Herrera, G., Hildebrandt, M., Hiller, K.H., Hoffmann, D., Horisberger, R., Hreus, T., Jacquet, M., Janssen, M.E., Janssen, X., Jönsson, L., Jung, A.W., Jung, H., Kapichine, M., Katzy, J., Kenyon, I.R., Kiesling, C., Klein, M., Kleinwort, C., Kluge, T., Knutsson, A., Kogler, R., Kostka, P., Kraemer, M., Krastev, K., Kretzschmar, J., Kropivnitskaya, A., Krüger, K., Kutak, K., Landon, M.P.J., Lange, W., Laštovička-Medin, G., Laycock, P., Lebedev, A., Leibenguth, G., Lendermann, V., Levonian, S., Li, G., Lipka, K., Liptaj, A., List, B., List, J., Loktionova, N., Lopez-Fernandez, R., Lubimov, V., Makankine, A., Malinovski, E., Marage, P., Marti, Ll., Martyn, H.-U., Maxfield, S.J., Mehta, A., Meyer, A.B., Meyer, H., Meyer, J., Michels, V., Mikocki, S., Milcewicz-Mika, I., Moreau, F., Morozov, A., Morris, J.V., Mozer, M.U., Mudrinic, M., Müller, K., Murín, P., Naumann, Th., Newman, P.R., Niebuhr, C., Nikiforov, A., Nikitin, D., Nowak, G., Nowak, K., Nozicka, M., Olivier, B., Olsson, J.E., Osman, S., Ozerov, D., Palichik, V., Panagoulias, I., Pandurovic, M., Papadopoulou, Th., Pascaud, C., Patel, G.D., Pejchal, O., Perez, E., Petrukhin, A., Picuric, I., Piec, S., Pitzl, D., Plačakytė, R., Pokorny, B., Polifka, R., Povh, B., Radescu, V., Rahmat, A.J., Raicevic, N., Raspiareza, A., Ravdandorj, T., Reimer, P., Rizvi, E., Robmann, P., Roland, B., Roosen, R., Rostovtsev, A., Rotaru, M., Ruiz Tabasco, J.E., Rurikova, Z., Rusakov, S., Šálek, D., Sankey, D.P.C., Sauter, M., Sauvan, E., Schmitt, S., Schoeffel, L., Schöning, A., Schultz-Coulon, H.-C., Sefkow, F., Shaw-West, R.N., Shtarkov, L.N., Shushkevich, S., Sloan, T., Smiljanic, I., Soloviev, Y., Sopicki, P., South, D., Spaskov, V., Specka, A., Staykova, Z., Steder, M., Stella, B., Stoicea, G., Straumann, U., Sunar, D., Sykora, T., Tchoulakov, V., Thompson, G., Thompson, P.D., Toll, T., Tomasz, F., Tran, T.H., Traynor, D., Trinh, T.N., Truöl, P., Tsakov, I., Tseepeldorj, B., Turnau, J., Urban, K., Valkárová, A., Vallée, C., Van Mechelen, P., Vargas Trevino, A., Vazdik, Y., Vinokurova, S., Volchinski, V., von den Driesch, M., Wegener, D., Wissing, Ch., Wünsch, E., Žáček, J., Zálešák, J., Zhang, Z., Zhokin, A., Zimmermann, T., Zohrabyan, H., Zomer, F., Zus, R., Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), H1, Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS)
Subjects: High Energy Physics - Experiment (hep-ex), [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], FOS: Physical sciences, ddc:530, High Energy Physics::Experiment, High Energy Physics - Experiment
Abstract: A measurement of elastic deeply virtual Compton scattering gamma* p -> gamma p using e^+ p and e^- p collision data recorded with the H1 detector at HERA is presented. The analysed data sample corresponds to an integrated luminosity of 306 pb^-1, almost equally shared between both beam charges. The cross section is measured as a function of the virtuality Q^2 of the exchanged photon and the centre-of-mass energy W of the gamma* p system in the kinematic domain 6.5 < Q^2 < 80 GeV^2, 30 < W < 140 GeV and |t| < 1 GeV^2, where t denotes the squared momentum transfer at the proton vertex. The cross section is determined differentially in t for different Q^2 and W values and exponential t-slope parameters are derived. Using e^+ p and e^- p data samples, a beam charge asymmetry is extracted for the first time in the low Bjorken x kinematic domain. The observed asymmetry is attributed to the interference between Bethe-Heitler and deeply virtual Compton scattering processes. Experimental results are discussed in the context of two different models, one based on generalised parton distributions and one based on the dipole approach., Revised version, accepted by journal, 21 pages, 6 figures, 4 tables
Published: 2009

9. A General Search for New Phenomena at HERA

Author: Aaron, F. D., Alexa, C., Bartel, W., Kiesling, C., Klein, M., Kleinwort, C., Kluge, T., Knutsson, A., Kogler, R., Korbel, V., Kostka, P., Kraemer, M., Krastev, K., Begzsuren, K., Kretzschmar, J., Kropivnitskaya, A., Kruger, K., Kutak, K., Landon, M. P. J., Lange, W., Lastovicka-Medin, G., Laycock, P., Lebedev, A., Leibenguth, G., Behnke, O., Lendermann, V., Levonian, S., Li, G., Lipka, K., Liptaj, A., List, B., List, J., Loktionova, N., Lopez-Fernandez, R., Lubimov, V., Belousov, A., Lytkin, L., Makankine, A., Malinovski, E., Marage, P., Marti, Ll., Martyn, H.-U., Maxfield, S. J., Mehta, A., Meier, K., Meyer, A. B., Bizot, J. C., Meyer, H., Meyer, J., Michels, V., Mikocki, S., Milcewicz-Mika, I., Moreau, F., Morozov, A., Morris, J. V., Mozer, Matthias Ulrich, Boudry, V., Mudrinic, M., Muller, K., Murin, P., Naroska, B., Naumann, Th., Newman, P. R., Niebuhr, C., Nikiforov, A., Nowak, G., Nowak, K., Bozovic-Jelisavcic, I., Nozicka, M., Olivier, B., Olsson, J. E., Osman, S., Ozerov, D., Palichik, V., Panagoulias, I., Pandurovic, M., Papadopoulou, Th., Pascaud, C., Bracinik, J., Patel, G. D., Pejchal, O., Perez, E., Petrukhin, A., Picuric, I., Piec, S., Pitzl, D., Placakyte, R., Polifka, R., Povh, B., Brandt, G., Preda, T., Radescu, V., Rahmat, A. J., Raicevic, N., Raspiareza, A., Ravdandorj, T., Reimer, P., Rizvi, E., Robmann, P., Roland, B., Brinkmann, M., Roosen, R., Rostovtsev, A., Rotaru, M., Ruiz Tabasco, J. E., Rurikova, Z., Rusakov, S., Salek, D., Sankey, D. P. C., Sauter, M., Sauvan, E., Andreev, V., Brisson, V., Schmitt, S., Schmitz, C., Schoeffel, L., Schoning, A., Schultz-Coulon, H.-C., Sefkow, F., Shaw-West, R. N., Sheviakov, I., Shtarkov, L. N., Shushkevich, S., Bruncko, D., Sloan, T., Smiljanic, Ivan, Soloviev, Y., Sopicki, P., South, D., Spaskov, V., Specka, Arnd E., Staykova, Z., Steder, M., Stella, B., Bunyatyan, A., Stoicea, G., Straumann, U., Sunar, D., Sykora, T., Tchoulakov, V., Thompson, G., Thompson, P. D., Toll, T., Tomasz, F., Tran, T. H., Buschhorn, G., Traynor, D., Trinh, T. N., Truol, P., Tsakov, I., Tseepeldorj, B., Turnau, J., Urban, K., Valkarova, A., Vallee, C., Van Mechelen, P., Bystritskaya, L., Vargas Trevino, A., Vazdik, Y., Vinokurova, S., Volchinski, V., von den Driesch, M., Wegener, D., Wessels, M., Wissing, Ch., Wunsch, E., Zacek, J., Campbell, A. J., Zalesak, J., Zhang, Z., Zhokin, A., Zimmermann, T., Zohrabyan, H., Zomer, F., H1 Collaboration, Cantun Avila, K. B., Cassol-Brunner, F., Cerny, K., Cerny, V., Antunovic, B., Chekelian, V., Cholewa, A., Contreras, J. G., Coughlan, J. A., Cozzika, G., Cvach, J., Dainton, J. B., Daum, K., Deak, M., de Boer, Y., Aplin, S., Delcourt, B., Del Degan, M., Delvax, J., De Roeck, A., De Wolf, E. A., Diaconu, C., Dodonov, V., Dossanov, A., Dubak, A., Eckerlin, G., Asmone, A., Efremenko, V., Egli, S., Eliseev, A., Elsen, E., Falkiewicz, A., Faulkner, P. J. W., Favart, L., Fedotov, A., Felst, R., Feltesse, J., Astvatsatourov, A., Ferencei, J., Fischer, D.-J., Fleischer, M., Fomenko, A., Gabathuler, E., Gayler, J., Ghazaryan, Samvel, Glazov, A., Glushkov, I., Goerlich, L., Backovic, S., Gogitidze, N., Gouzevitch, M., Grab, C., Greenshaw, T., Grell, B. R., Grindhammer, G., Habib, S., Haidt, D., Hansson, M., Helebrant, C., Baghdasaryan, A., Henderson, R. C. W., Hennekemper, E., Henschel, H., Herbst, M., Herrera, G., Hildebrandt, M., Hiller, K. H., Hoffmann, D., Horisberger, R., Hreus, T., Barrelet, E., Jacquet, M., Janssen, M. E., Janssen, X., Jemanov, V., Jonsson, L., Jung, Andreas Werner, Jung, H., Kapichine, M., Katzy, J., Kenyon, I. R., H1 Collaboration, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, H1, (ukupan broj autora: 256), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Nuclear and High Energy Physics, Particle physics, data analysis method, Photon, new physics: signature, electron p: interaction, Scalar (mathematics), signature [new physics], FOS: Physical sciences, momentum spectrum [transverse momentum], 01 natural sciences, transverse momentum: momentum spectrum, Standard Model, High Energy Physics - Experiment, Nuclear physics, mass spectrum, High Energy Physics - Experiment (hep-ex), phase space, 0103 physical sciences, interaction [positron p], [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], 301: 319 GeV-cms, Invariant mass, ddc:530, angular distribution, 010306 general physics, Physics, Muon, 319 GeV-cms [301], 010308 nuclear & particles physics, HERA, interaction [electron p], positron p: interaction, DESY HERA Stor, Phase space, H1, Neutrino
Abstract: A model-independent search for deviations from the Standard Model prediction is performed using the full e±p data sample collected by the H1 experiment at HERA. All event topologies involving isolated electrons, photons, muons, neutrinos and jets with transverse momenta above 20 GeV are investigated in a single analysis. Events are assigned to exclusive classes according to their final state. A dedicated algorithm is used to search for deviations from the Standard Model in the distributions of the scalar sum of transverse momenta or the invariant mass of final state particles and to quantify their significance. Variables related to angular distributions and energy sharing between final state particles are also introduced to study the final state topologies. No significant deviation from the Standard Model expectation is observed in the phase space covered by this analysis., Physics Letters B, 674 (4-5), ISSN:0370-2693, ISSN:0031-9163, ISSN:1873-2445
Published: 2009

10. Jet Production in ep Collisions at Low Q^2 and Determination of alpha_s

Author: Aaron, F.D., Alexa, C., Andreev, V., Antunovic, B., Aplin, S., Asmone, A., Astvatsatourov, A., Bacchetta, A., Backovic, S., Baghdasaryan, A., Baranov, P., Barrelet, E., Bartel, W., Beckingham, M., Begzsuren, K., Behnke, O., Belousov, A., Berger, N., Bizot, J.C., Boenig, M.-O., Boudry, V., Bozovic-Jelisavcic, I., Bracinik, J., Brandt, G., Brinkmann, M., Brisson, V., Bruncko, D., Bunyatyan, A., Buschhorn, G., Bystritskaya, L., Campbell, A.J., Cantun Avila, K.B., Cassol-Brunner, F., Cerny, K., Cerny, V., Chekelian, V., Cholewa, A., Contreras, J.G., Coughlan, J.A., Cozzika, G., Cvach, J., Dainton, J.B., Daum, K., Deák, M., de Boer, Y., Delcourt, B., del Degan, M., Delvax, J., de Roeck, A., de Wolf, E.A., Diaconu, C., Dodonov, V., Dossanov, A., Dubak, A., Eckerlin, G., Efremenko, V., Egli, S., Eliseev, A., Elsen, E., Essenov, S., Falkiewicz, A., Faulkner, P.J.W., Favart, L., Fedotov, A., Felst, R., Feltesse, J., Ferencei, J., Finke, L., Fleischer, M., Fomenko, A., Gabathuler, E., Gayler, J., Ghazaryan, S., Glazov, A., Glushkov, I., Goerlich, L., Goettlich, M., Gogitidze, N., Gouzevitch, M., Grab, C., Greenshaw, T., Grell, B.R., Grindhammer, G., Habib, S., Haidt, D., Hansson, M., Helebrant, C., Henderson, R.C.W., Henschel, H., Herrera, G., Hildebrandt, M., Hiller, K.H., Hoffmann, D., Horisberger, R., Hovhannisyan, A., Hreus, T., Jacquet, M., Janssen, M.E., Janssen, X., Jemanov, V., Jönsson, L., Johnson, D.P., Jung, A.W., Jung, H., Kapichine, M., Katzy, J., Kenyon, I.R., Kiesling, C., Klein, M., Kleinwort, C., Klimkovich, T., Kluge, T., Knutsson, A., Kogler, R., Korbel, V., Kostka, P., Kraemer, M., Krastev, K., Kretzschmar, J., Kropivnitskaya, A., Krüger, K., Kutak, K., Landon, M.P.J., Lange, W., Lastovicka-Medin, G., Laycock, P., Lebedev, A., Leibenguth, G., Lendermann, V., Levonian, S., Li, G., Lipka, K., Liptaj, A., List, B., List, J., Loktionova, N., Lopez-Fernandez, R., Lubimov, V., Lucaci-Timoce, A.-I., Lytkin, L., Makankine, A., Malinovski, E., Marage, P., Marti, Ll., Martyn, H.-U., Maxfield, S.J., Mehta, A., Meier, K., Meyer, A.B., Meyer, H., Meyer, J., Michels, V., Mikocki, S., Milcewicz-Mika, I., Moreau, F., Morozov, A., Morris, J.V., Mozer, M.U., Mudrinic, M., Müller, K., Murín, P., Nankov, K., Naroska, B., Naumann, Th., Newman, P.R., Niebuhr, C., Nikiforov, A., Nowak, G., Nowak, K., Nozicka, M., Olivier, B., Olsson, J.E., Osman, S., Ozerov, D., Palichik, V., Panagoulias, I., Pandurovic, M., Papadopoulou, Th., Pascaud, C., Patel, G.D., Pejchal, O., Peng, H., Perez, Emile, Petrukhin, A., Picuric, I., Piec, S., Pitzl, D., Placakyte, R., Polifka, R., Povh, B., Preda, T., Radescu, V., Rahmat, A.J., Raicevic, N., Raspiareza, A., Ravdandorj, T., Reimer, P., Rizvi, E., Robmann, P., Roland, B., Roosen, R., Rostovtsev, A., Rotaru, M., Ruiz Tabasco, J.E., Rurikova, Z., Rusakov, S., Salek, D., Salvaire, F., Sankey, D.P.C., Sauter, M., Sauvan, E., Schmidt, S., Schmitt, S., Schmitz, C., Schoeffel, L., Schöning, A., Schultz-Coulon, H.-C., Sefkow, F., Shaw-West, R.N., Sheviakov, I., Shtarkov, L.N., Shushkevich, S., Sloan, T., Smiljanic, I., Smirnov, P., Soloviev, Y., Sopicki, P., South, D., Spaskov, V., Specka, A., Staykova, Z., Steder, M., Stella, B., Straumann, U., Sunar, D., Sykora, T., Tchoulakov, V., Thompson, G., Thompson, P.D., Toll, T., Tomasz, F., Tran, T.H., Traynor, D., Trinh, T.N., Truöl, P., Tsakov, I., Tseepeldorj, B., Tsurin, I., Turnau, J., Tzamariudaki, E., Urban, K., Valkárová, A., Vallée, Corentin, van Mechelen, P., Vargas Trevino, A., Vazdik, Y., Vinokurova, S., Volchinski, V., Wegener, D., Wessels, M., Wissing, Ch., Wünsch, E., Yeganov, V., Zácek, J., Zálesák, J., Zhang, Zhiqing, Zhelezov, A., Zhokin, A., Zhu, Y.C., Zimmermann, T., Zohrabyan, H., Zomer, F., Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), H1, Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), and (ukupan broj autora: 234)
Subjects: Physics and Astronomy (miscellaneous), 010308 nuclear & particles physics, Physics, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, 01 natural sciences, 7. Clean energy, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, Physique des particules élémentaires, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, 010306 general physics, Engineering (miscellaneous)
Abstract: The production of jets is studied in deep-inelastic e+p scattering at low negative four momentum transfer squared 5, 0, SCOPUS: ar.j, info:eu-repo/semantics/published
Published: 2009
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11. Inclusive Photoproduction of $\rho^0,\ K^{*0}$ and $\phi$ Mesons at HERA

Author: Aaron, F. D., Alexa, C., Andreev, V., Antunovic, B., Aplin, S., Asmone, A., Astvatsatourov, A., Backovic, S., Baghdasaryan, A., Barrelet, E., Bartel, W., Begzsuren, K., Behnke, O., Belousov, A., Berger, N., Bizot, J. C., Boudry, V., Bozovic-Jelisavcic, I., Bracinik, J., Brandt, G., Brinkmann, M., Brisson, V., Bruncko, D., Bunyatyan, A., Buschhorn, G., Bystritskaya, L., Campbell, A. J., Cantun Avila, K. B., Cassol-Brunner, F., Cerny, K., Cerny, V., Chekelian, V., Cholewa, A., Contreras, J. G., Coughlan, J. A., Cozzika, G., Cvach, J., Dainton, J. B., Daum, K., Deák, M., de Boer, Y., Delcourt, B., Del Degan, M., Delvax, J., De Roeck, A., De Wolf, E. A., Diaconu, C., Dodonov, V., Dossonov, A., Dubak, A., Eckerlin, G., Efremenko, V., Egli, S., Eliseev, A., Elsen, E., Falkewicz, A., Faulkner, P. J. W., Favart, L., Fedotov, A., Felst, R., Feltesse, J., Ferencei, J., Fischer, D. J., Fleischer, M., Fomenko, A., Gabathuler, E., Gayler, J., Ghazaryan, S., Glazov, A., Glushkov, I., Goerlich, L., Göttlich, M., Gogitidze, N., Gouzevitch, M., Grab, C., Greenshaw, T., Grell, B. R., Grindhammer, G., Habib, S., Haidt, D., Hansson, M., Helebrant, C., Henderson, R. C. W., Hennekemper, E., Henschel, H., Herbst, M., Herrera, G., Hildebrandt, M., Hiller, K. H., Hoffmann, D., Horisberger, R., Hreus, T., Jacquet, M., Janssen, M. E., Janssen, X., Jemanov, V., Jönsson, L., Jung, A. W., Jung, H., Kapichine, M., Katzy, J., Kenyon, I. R., Kiesling, C., Klein, M., Kleinwort, C., Kluge, T., Knutsson, A., Kogler, R., Korbel, V., Kostka, P., Kraemer, M., Krastev, K., Kretzschmar, J., Kropivnitskaya, A., Krüger, K., Kutak, K., Landon, M. P. J., Lange, W., Lastovicka-Medin, G., Laycock, P., Lebedev, A., Leibenguth, G., Lendermann, V., Levonian, S., Li, G., Lipka, K., Liptaj, A., List, B., List, J., Loktionova, N., Lopez-Fernandez, R., Lubimov, V., Lytkin, L., Makankine, A., Malinovski, E., Marage, P., Marti, Ll., Martyn, H.-U., Maxfield, S. J., Mehta, A., Meier, K., Meyer, A. B., Meyer, H., Meyer, J., Michels, V., Mikocki, S., Milcewicz-Mika, I., Moreau, F., Morozov, A., Morris, J. V., Mozer, M. U., Mudrinic, M., Müller, K., Murín, P., Naroska, B., Naumann, Th., Newman, P. R., Niebuhr, C., Nikiforov, A., Nowak, G., Nowak, K., Nozicka, M., Olivier, B., Olsson, J. E., Osman, S., Ozerov, D., Palichik, V., Panagoulias, I., Pandurovic, M., Papadopoulou, Th., Pascaud, C., Patel, G. D., Pejchal, O., Perez, E., Petrukhin, A., Picuric, I., Piec, S., Pitzl, D., Placakyt\. e, R., Polifka, R., Povh, B., Preda, T., Radescu, V., Rahmat, A. J., Raicevic, N., Raspiareza, A., Ravdandorj, T., Reimer, P., Rizvi, E., Robmann, P., Roland, B., Roosen, R., Rostovtsev, A., Rotaru, M., Ruiz Tabasco, J. E., Rurikova, Z., Rusakov, S., Salek, D., Sankey, D. P. C., Sauter, M., Sauvan, E., Schmidt, S., Schmitt, S., Schmitz, C., Schoeffel, L., Schöning, A., Schultz-Coulon, H.-C., Sefkow, F., Shaw-West, R. N., Sheviakov, I., Shtarkov, L. N., Shushkevich, S., Sloan, T., Smiljanic, I., Soloviev, Y., Sopicki, P., South, D., Spaskov, V., Specka, A., Staykova, Z., Steder, M., Stella, B., Stoicea, G., Straumann, U., Sunar, D., Sykora, T., Tchoulakov, V., Thompson, G., Thompson, P. D., Toll, T., Tomasz, F., Tran, T. H., Traynor, D., Trinh, T. N., Truöl, P., Tsakov, I., Tseepeldorj, B., Turnau, J., Urban, K., Valkárová, A., Vallée, C., Van Mechelen, P., Vargas Trevino, A., Vazdik, Y., Vinokurova, S., Volchinski, V., von den Driesch, M., Wegener, D., Wissing, Ch., Wünsch, E., Zácek, J., Zálesák, J., Zhang, Z., Zhokin, A., Zimmermann, T., Zohrabyan, H., Zomer, F., Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), H1, Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), and Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Subjects: High Energy Physics - Experiment (hep-ex), High Energy Physics::Phenomenology, Nuclear Theory, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], FOS: Physical sciences, High Energy Physics::Experiment, ddc:530, Nuclear Experiment, High Energy Physics - Experiment
Abstract: Inclusive non-diffractive photoproduction of rho(770)^0, K^*(892)^0 and phi(1020) mesons is investigated with the H1 detector in ep collisions at HERA. The corresponding average \gamma p centre-of-mass energy is 210 GeV. The mesons are measured in the transverse momentum range 0.5, Comment: 20 pages, 4 figures, accepted by Phys. Lett. B
Published: 2009

12. Strangeness Production at low $Q^2$ in Deep-Inelastic ep Scattering at HERA

Author: Aaron, F. D., Alexa, C., Andreev, V., Antunovic, B., Aplin, S., Asmone, A., Astvatsatourov, A., Bacchetta, A., Backovic, S., Baghdasaryan, A., Baranov, P., Barrelet, E., Bartel, W., Beckingham, M., Begzsuren, K., Behnke, O., Belousov, A., Berger, N., Bizot, J. C., Boenig, M.-O., Boudry, V., Bozovic-Jelisavcic, I., Bracinik, J., Brandt, G., Brinkmann, M., Brisson, V., Bruncko, D., Bunyatyan, A., Buschhorn, G., Bystritskaya, L., Campbell, A. J., Cantun Avila, K. B., Cassol-Brunner, F., Cerny, K., Cerny, V., Chekelian, V., Cholewa, A., Contreras, J. G., Coughlan, J. A., Cozzika, G., Cvach, J., Dainton, J. B., Daum, K., Deák, M., de Boer, Y., Delcourt, B., Del Degan, M., Delvax, J., De Roeck, A., De Wolf, E. A., Diaconu, C., Dodonov, V., Dossonov, A., Dubak, A., Eckerlin, G., Efremenko, V., Egli, S., Eichler, R., Eliseev, A., Elsen, E., Essenov, S., Falkewicz, A., Faulkner, P. J. W., Favart, L., Fedotov, A., Felst, R., Feltesse, J., Ferencei, J., Fleischer, M., Fomenko, A., Gabathuler, E., Gayler, J., Ghazaryan, S., Glazov, A., Glushkov, I., Goerlich, L., Göttlich, M., Gogitidze, N., Gouzevitch, M., Grab, C., Greenshaw, T., Grell, B. R., Grindhammer, G., Habib, S., Haidt, D., Hansson, M., Helebrant, C., Henderson, R. C. W., Hennekemper, E., Henschel, H., Herrera, G., Hildebrandt, M., Hiller, K. H., Hoffmann, D., Horisberger, R., Hovhannisyan, A., Hreus, T., Jacquet, M., Janssen, M. E., Janssen, X., Jemanov, V., Jönsson, L., Jung, A. W., Jung, H., Kapichine, M., Katzy, J., Kenyon, I. R., Kiesling, C., Klein, M., Kleinwort, C., Klimkovich, T., Kluge, T., Knutsson, A., Kogler, R., Korbel, V., Kostka, P., Kraemer, M., Krastev, K., Kretzschmar, J., Kropivnitskaya, A., Krüger, K., Kutak, K., Landon, M. P. J., Lange, W., Lastovicka-Medin, G., Laycock, P., Lebedev, A., Leibenguth, G., Lendermann, V., Levonian, S., Li, G., Lipka, K., Liptaj, A., List, B., List, J., Loktionova, N., Lopez-Fernandez, R., Lubimov, V., Lucaci-Timoce, A.-I., Lytkin, L., Makankine, A., Malinovski, E., Marage, P., Marti, Ll., Martyn, H.-U., Maxfield, S. J., Mehta, A., Meier, K., Meyer, A. B., Meyer, H., Meyer, J., Michels, V., Mikocki, S., Milcewicz-Mika, I., Moreau, F., Morozov, A., Morris, J. V., Mozer, M. U., Mudrinic, M., Müller, K., Murín, P., Nankov, K., Naroska, B., Naumann, Th., Newman, P. R., Niebuhr, C., Nikiforov, A., Nowak, G., Nowak, K., Nozicka, M., Olivier, B., Olsson, J. E., Osman, S., Ozerov, D., Palichik, V., Panagoulias, I., Pandurovic, M., Papadopoulou, Th., Pascaud, C., Patel, G. D., Pejchal, O., Peng, H., Perez, E., Petrukhin, A., Picuric, I., Piec, S., Pitzl, D., Placakyt\. e, R., Polifka, R., Povh, B., Preda, T., Radescu, V., Rahmat, A. J., Raicevic, N., Raspiareza, A., Ravdandorj, T., Reimer, P., Rizvi, E., Robmann, P., Roland, B., Roosen, R., Rostovtsev, A., Rotaru, M., Ruiz Tabasco, J. E., Rurikova, Z., Rusakov, S., Salek, D., Salvaire, F., Sankey, D. P. C., Sauter, M., Sauvan, E., Schmidt, S., Schmitt, S., Schmitz, C., Schoeffel, L., Schöning, A., Schultz-Coulon, H.-C., Sefkow, F., Shaw-West, R. N., Sheviakov, I., Shtarkov, L. N., Shushkevich, S., Sloan, T., Smiljanic, I., Smirnov, P., Soloviev, Y., Sopicki, P., South, D., Spaskov, V., Specka, A., Staykova, Z., Steder, M., Stella, B., Straumann, U., Sunar, D., Sykora, T., Tchoulakov, V., Thompson, G., Thompson, P. D., Toll, T., Tomasz, F., Tran, T. H., Traynor, D., Trinh, T. N., Truöl, P., Tsakov, I., Tseepeldorj, B., Tsurin, I., Turnau, J., Tzamariudaki, E., Urban, K., Valkárová, A., Vallée, C., Van Mechelen, P., Vargas Trevino, A., Vazdik, Y., Vinokurova, S., Volchinski, V., Wegener, D., Wessels, M., Wissing, Ch., Wünsch, E., Yeganov, V., Zácek, J., Zálesák, J., Zhang, Z., Zhelezov, A., Zhokin, A., Zhu, Y. C., Zimmermann, T., Zohrabyan, H., Zomer, F., Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, H1, Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), (ukupan broj autora: 273), and H1 Collaboration
Subjects: Physics, Particle physics, Physics and Astronomy (miscellaneous), 010308 nuclear & particles physics, Scattering, Monte Carlo method, Hadron, Strangeness production, FOS: Physical sciences, HERA, Lambda, 01 natural sciences, Charged particle, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Phase space, 0103 physical sciences, Physique des particules élémentaires, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, ddc:530, 010306 general physics, Engineering (miscellaneous)
Abstract: The production of neutral strange hadrons is investigated using deep-inelastic scattering events measured with the H1 detector at HERA. The measurements are made in the phase space defined by the negative four-momentum transfer squared of the photon 2, 0, SCOPUS: ar.j, info:eu-repo/semantics/published
Published: 2009

13. Search for Excited Quarks in ep Collisions at HERA

Author: Aaron, F. D., Alexa, C., Alimujiang, K., Andreev, V., Antunovic, B., Asmone, A., Astvatsatourov, A., Backovic, S., Baghdasaryan, A., Barrelet, E., Bartel, W., Begzsuren, K., Belousov, A., Bizot, J. C., Boudry, V., Bozovic-Jelisavcic, I., Bracinik, J., Brandt, G., Brinkmann, M., Brisson, V., Bruncko, D., Bunyatyan, A., Buschhorn, G., Bystritskaya, L., Campbell, A. J., Cantun Avila, K. B., Cassol-Brunner, F., Cerny, K., Cerny, V., Chekelian, V., Cholewa, A., Contreras, J. G., Coughlan, J. A., Cozzika, G., Cvach, J., Dainton, J. B., Daum, K., Deák, M., de Boer, Y., Delcourt, B., Del Degan, M., Delvax, J., De Roeck, A., De Wolf, E. A., Diaconu, C., Dodonov, V., Dossanov, A., Dubak, A., Eckerlin, G., Efremenko, V., Egli, S., Eliseev, A., Elsen, E., Falkewicz, A., Faulkner, P. J. W., Favart, L., Fedotov, A., Felst, R., Feltesse, J., Ferencei, J., Fischer, D. J., Fleischer, M., Fomenko, A., Gabathuler, E., Gayler, J., Ghazaryan, S., Glazov, A., Glushkov, I., Goerlich, L., Gogitidze, N., Gouzevitch, M., Grab, C., Greenshaw, T., Grell, B. R., Grindhammer, G., Habib, S., Haidt, D., Helebrant, C., Henderson, R. C. W., Hennekemper, E., Henschel, H., Herbst, M., Herrera, G., Hildebrandt, M., Hiller, K. H., Hoffmann, D., Horisberger, R., Hreus, T., Jacquet, M., Janssen, M. E., Janssen, X., Jemanov, V., Jönsson, L., Jung, A. W., Jung, H., Kapichine, M., Katzy, J., Kenyon, I. R., Kiesling, C., Klein, M., Kleinwort, C., Kluge, T., Knutsson, A., Kogler, R., Korbel, V., Kostka, P., Kraemer, M., Krastev, K., Kretzschmar, J., Kropivnitskaya, A., Krüger, K., Kutak, K., Landon, M. P. J., Lange, W., Lastovicka-Medin, G., Laycock, P., Lebedev, A., Leibenguth, G., Lendermann, V., Levonian, S., Li, G., Lipka, K., Liptaj, A., List, B., List, J., Loktionova, N., Lopez-Fernandez, R., Lubimov, V., Lytkin, L., Makankine, A., Malinovski, E., Marage, P., Marti, Ll., Martyn, H.-U., Maxfield, S. J., Mehta, A., Meier, K., Meyer, A. B., Meyer, H., Meyer, J., Michels, V., Mikocki, S., Milcewicz-Mika, I., Moreau, F., Morozov, A., Morris, J. V., Mozer, M. U., Mudrinic, M., Müller, K., Murín, P., Naroska, B., Naumann, Th., Newman, P. R., Niebuhr, C., Nikiforov, A., Nowak, G., Nowak, K., Nozicka, M., Olivier, B., Olsson, J. E., Osman, S., Ozerov, D., Palichik, V., Panagoulias, I., Pandurovic, M., Papadopoulou, Th., Pascaud, C., Patel, G. D., Pejchal, O., Perez, E., Petrukhin, A., Picuric, I., Piec, S., Pitzl, D., Placakyte, R., Pokorny, B., Polifka, R., Povh, B., Preda, T., Radescu, V., Rahmat, A. J., Raicevic, N., Raspiareza, A., Ravdandorj, T., Reimer, P., Rizvi, E., Robmann, P., Roland, B., Roosen, R., Rostovtsev, A., Rotaru, M., Ruiz Tabasco, J. E., Rurikova, Z., Rusakov, S., Salek, D., Sankey, D. P. C., Sauter, M., Sauvan, E., Schmitt, S., Schmitz, C., Schoeffel, L., Schöning, A., Schultz-Coulon, H.-C., Sefkow, F., Shaw-West, R. N., Sheviakov, I., Shtarkov, L. N., Shushkevich, S., Sloan, T., Smiljanic, I., Soloviev, Y., Sopicki, P., South, D., Spaskov, V., Specka, A., Staykova, Z., Steder, M., Stella, B., Stoicea, G., Straumann, U., Sunar, D., Sykora, T., Tchoulakov, V., Thompson, G., Thompson, P. D., Toll, T., Tomasz, F., Tran, T. H., Traynor, D., Trinh, T. N., Truöl, P., Tsakov, I., Tseepeldorj, B., Turnau, J., Urban, K., Valkárová, A., Vallée, C., Van Mechelen, P., Vargas Trevino, A., Vazdik, Y., Vinokurova, S., Volchinski, V., von den Driesch, M., Wegener, D., Wissing, Ch., Wünsch, E., Zácek, J., Zálesák, J., Zhang, Z., Zhokin, A., Zimmermann, T., Zohrabyan, H., Zomer, F., Zus, R., Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, H1, Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), H1 Collaboration, and (ukupan broj autora: 253)
Subjects: Physics, Quark, Nuclear and High Energy Physics, Particle physics, Luminosity (scattering theory), 010308 nuclear & particles physics, High Energy Physics::Lattice, Hadron, Electroweak interaction, High Energy Physics::Phenomenology, FOS: Physical sciences, HERA, Lambda, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), W and Z bosons, Excited state, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], ddc:530, High Energy Physics::Experiment, 010306 general physics
Abstract: A search for excited quarks is performed using the full ep data sample collected by the H1 experiment at HERA, corresponding to a total integrated luminosity of 475 pb^-1. The electroweak decays of excited quarks q* -> q gamma, q* -> q Z and q* -> q W with subsequent hadronic or leptonic decays of the W and Z bosons are considered. No evidence for first generation excited quark production is found. Mass dependent exclusion limits on q* production cross sections and on the ratio f/Lambda of the coupling to the compositeness scale are derived within gauge mediated models. These limits extend the excluded region compared to previous excited quark searches., Revised version, with small changes to the text. 19 pages, 5 figures
Published: 2009

14. Prompt Photons in Photoproduction at HERA

Author: Aaron, F. D., Aldaya Martin, M., Alexa, C., Alimujiang, K., Andreev, V., Antunovic, B., Backovic, S., Baghdasaryan, A., Barrelet, E., Bartel, W., Begzsuren, K., Belousov, A., Bizot, J. C., Boudry, V., Bozovic-Jelisavcic, I., Bracinik, J., Brandt, G., Brinkmann, M., Brisson, V., Bruncko, D., Bunyatyan, A., Buschhorn, G., Bystritskaya, L., Campbell, A. J., Cantun Avila, K. B., Cerny, K., Cerny, V., Chekelian, V., Cholewa, A., Contreras, J. G., Coughlan, J. A., Cozzika, G., Cvach, J., Dainton, J. B., Daum, K., Deák, M., de Boer, Y., Delcourt, B., Del Degan, M., Delvax, J., De Wolf, E. A., Diaconu, C., Dodonov, V., Dossanov, A., Dubak, A., Eckerlin, G., Efremenko, V., Egli, S., Eliseev, A., Elsen, E., Falkiewicz, A., Favart, L., Fedotov, A., Felst, R., Feltesse, J., Ferencei, J., Fischer, D. J., Fleischer, M., Fomenko, A., Gabathuler, E., Gayler, J., Ghazaryan, S., Glazov, A., Glushkov, I., Goerlich, L., Gogitidze, N., Gouzevitch, M., Grab, C., Greenshaw, T., Grell, B. R., Grindhammer, G., Habib, S., Haidt, D., Helebrant, C., Henderson, R. C. W., Hennekemper, E., Henschel, H., Herbst, M., Herrera, G., Hildebrandt, M., Hiller, K. H., Hoffmann, D., Horisberger, R., Hreus, T., Jacquet, M., Janssen, M. E., Janssen, X., Jönsson, L., Jung, A. W., Jung, H., Kapichine, M., Katzy, J., Kenyon, I. R., Kiesling, C., Klein, M., Kleinwort, C., Kluge, T., Knutsson, A., Kogler, R., Kostka, P., Kraemer, M., Krastev, K., Kretzschmar, J., Kropivnitskaya, A., Krüger, K., Kutak, K., Landon, M. P. J., Lange, W., Lastovicka-Medin, G., Laycock, P., Lebedev, A., Leibenguth, G., Lendermann, V., Levonian, S., Li, G., Lipka, K., Liptaj, A., List, B., List, J., Loktionova, N., Lopez-Fernandez, R., Lubimov, V., Makankine, A., Malinovski, E., Marage, P., Marti, Ll., Martyn, H.-U., Maxfield, S. J., Mehta, A., Meyer, A. B., Meyer, H., Meyer, J., Michels, V., Mikocki, S., Milcewicz-Mika, I., Moreau, F., Morozov, A., Morris, J. V., Mozer, M. U., Mudrinic, M., Müller, K., Murín, P., Naumann, Th., Newman, P. R., Niebuhr, C., Nikiforov, A., Nikitin, D., Nowak, G., Nowak, K., Nozicka, M., Olivier, B., Olsson, J. E., Osman, S., Ozerov, D., Palichik, V., Panagoulias, I., Pandurovic, M., Papadopoulou, Th., Pascaud, C., Patel, G. D., Pejchal, O., Perez, E., Petrukhin, A., Picuric, I., Piec, S., Pitzl, D., Placakyte, R., Pokorny, B., Polifka, R., Povh, B., Radescu, V., Rahmat, A. J., Raicevic, N., Raspiareza, A., Ravdandorj, T., Reimer, P., Rizvi, E., Robmann, P., Roland, B., Roosen, R., Rostovtsev, A., Rotaru, M., Ruiz Tabasco, J. E., Rurikova, Z., Rusakov, S., Sálek, D., Sankey, D. P. C., Sauter, M., Sauvan, E., Schmitt, S., Schœffel, L., Schöning, A., Schultz-Coulon, H.-C., Sefkow, F., Shaw-West, R. N., Shtarkov, L. N., Shushkevich, S., Sloan, T., Smiljanic, I., Soloviev, Y., Sopicki, P., South, D., Spaskov, V., Specka, A., Staykova, Z., Steder, M., Stella, B., Stoicea, G., Straumann, U., Sunar, D., Sykora, T., Tchoulakov, V., Thompson, G., Thompson, P. D., Toll, T., Tomasz, F., Tran, T. H., Traynor, D., Trinh, T. N., Truöl, P., Tsakov, I., Tseepeldorj, B., Turnau, J., Urban, K., Valkárová, A., Vallée, C., Van Mechelen, P., Vargas Trevino, A., Vazdik, Y., Vinokurova, S., Volchinski, V., von den Driesch, M., Wegener, D., Wissing, Ch., Wünsch, E., Zácek, J., Zálesák, J., Zhang, Z., Zhokin, A., Zimmermann, T., Zohrabyan, H., Zomer, F., Zus, R., Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), H1, H1 Collaboration, Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), and H1 Collaboration (ukupan broj autora: 243)
Subjects: Particle physics, Antiparticle, Photon, Physics and Astronomy (miscellaneous), Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Parton, Jet (particle physics), 01 natural sciences, 7. Clean energy, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], ddc:530, 010306 general physics, Nuclear Experiment, Engineering (miscellaneous), Quantum chromodynamics, Physics, Luminosity (scattering theory), 010308 nuclear & particles physics, HERA, Pseudorapidity, High Energy Physics::Experiment
Abstract: The production of prompt photons is measured in the photoproduction regime of electron-proton scattering at HERA. The analysis is based on a data sample corresponding to a total integrated luminosity of 340 pb^-1 collected by the H1 experiment. Cross sections are measured for photons with transverse momentum and pseudorapidity in the range 6 < Et < 15 GeV and -1.0 < eta < 2.4, respectively. Cross sections for events with an additional jet are measured as a function of the transverse energy and pseudorapidity of the jet, and as a function of the fractional momenta x_gamma and x_p carried by the partons entering the hard scattering process. The correlation between the photon and the jet is also studied. The results are compared with QCD predictions based on the collinear and on the k_T factorisation approaches., 33 pages, 9 figures
Published: 2009

15. Events with Isolated Leptons and Missing Transverse Momentum and Measurement of W Production at HERA

Author: Aaron, F. D., Alexa, C., Andreev, V., Antunovic, B., Aplin, S., Asmone, A., Astvatsatourov, A., Backovic, S., Baghdasaryan, A., Barrelet, E., Bartel, W., Begzsuren, K., Behnke, O., Belousov, A., Bizot, J. C., Boudry, V., Bozovic-Jelisavcic, I., Bracinik, J., Brandt, G., Brinkmann, M., Brisson, V., Bruncko, D., Bunyatyan, A., Buschhorn, G., Bystritskaya, L., Campbell, A. J., Cantun Avila, K. B., Cassol-Brunner, F., Cerny, K., Cerny, V., Chekelian, V., Cholewa, A., Contreras, J. G., Coughlan, J. A., Cozzika, G., Cvach, J., Dainton, J. B., Daum, K., Deák, M., de Boer, Y., Delcourt, B., Del Degan, M., Delvax, J., De Roeck, A., De Wolf, E. A., Diaconu, C., Dodonov, V., Dossanov, A., Dubak, A., Eckerlin, G., Efremenko, V., Egli, S., Eliseev, A., Elsen, E., Essenov, S., Falkewicz, A., Faulkner, P. J. W., Favart, L., Fedotov, A., Felst, R., Feltesse, J., Ferencei, J., Fischer, D. J., Fleischer, M., Fomenko, A., Gabathuler, E., Gayler, J., Ghazaryan, S., Glazov, A., Glushkov, I., Goerlich, L., Göttlich, M., Gogitidze, N., Gouzevitch, M., Grab, C., Greenshaw, T., Grell, B. R., Grindhammer, G., Habib, S., Haidt, D., Hansson, M., Helebrant, C., Henderson, R. C. W., Hennekemper, E., Henschel, H., Herrera, G., Hildebrandt, M., Hiller, K. H., Hoffmann, D., Horisberger, R., Hreus, T., Jacquet, M., Janssen, M. E., Janssen, X., Jemanov, V., Jönsson, L., Jung, A. W., Jung, H., Kapichine, M., Katzy, J., Kenyon, I. R., Kiesling, C., Klein, M., Kleinwort, C., Klimkovich, T., Kluge, T., Knutsson, A., Kogler, R., Korbel, V., Kostka, P., Kraemer, M., Krastev, K., Kretzschmar, J., Kropivnitskaya, A., Krüger, K., Kutak, K., Landon, M. P. J., Lange, W., Lastovicka-Medin, G., Laycock, P., Lebedev, A., Leibenguth, G., Lendermann, V., Levonian, S., Li, G., Lipka, K., Liptaj, A., List, B., List, J., Loktionova, N., Lopez-Fernandez, R., Lubimov, V., Lytkin, L., Makankine, A., Malinovski, E., Marage, P., Marti, Ll., Martyn, H.-U., Maxfield, S. J., Mehta, A., Meier, K., Meyer, A. B., Meyer, H., Meyer, J., Michels, V., Mikocki, S., Milcewicz-Mika, I., Moreau, F., Morozov, A., Morris, J. V., Mozer, M. U., Mudrinic, M., Müller, K., Murín, P., Naroska, B., Naumann, Th., Newman, P. R., Niebuhr, C., Nikiforov, A., Nowak, G., Nowak, K., Nozicka, M., Olivier, B., Olsson, J. E., Osman, S., Ozerov, D., Palichik, V., Panagoulias, I., Pandurovic, M., Papadopoulou, Th., Pascaud, C., Patel, G. D., Pejchal, O., Perez, E., Petrukhin, A., Picuric, I., Piec, S., Pitzl, D., Placakyt\. e, R., Polifka, R., Povh, B., Preda, T., Radescu, V., Rahmat, A. J., Raicevic, N., Raspiareza, A., Ravdandorj, T., Reimer, P., Rizvi, E., Robmann, P., Roland, B., Roosen, R., Rostovtsev, A., Rotaru, M., Ruiz Tabasco, J. E., Rurikova, Z., Rusakov, S., Salek, D., Sankey, D. P. C., Sauter, M., Sauvan, E., Schmidt, S., Schmitt, S., Schmitz, C., Schoeffel, L., Schöning, A., Schultz-Coulon, H.-C., Sefkow, F., Shaw-West, R. N., Sheviakov, I., Shtarkov, L. N., Shushkevich, S., Sloan, T., Smiljanic, I., Soloviev, Y., Sopicki, P., South, D., Spaskov, V., Specka, A., Staykova, Z., Steder, M., Stella, B., Stoicea, G., Straumann, U., Sunar, D., Sykora, T., Tchoulakov, V., Thompson, G., Thompson, P. D., Toll, T., Tomasz, F., Tran, T. H., Traynor, D., Trinh, T. N., Truöl, P., Tsakov, I., Tseepeldorj, B., Turnau, J., Urban, K., Valkárová, A., Vallée, C., Van Mechelen, P., Vargas Trevino, A., Vazdik, Y., Vinokurova, S., Volchinski, V., Wegener, D., Wissing, Ch., Wünsch, E., Zácek, J., Zálesák, J., Zhang, Z., Zhokin, A., Zimmermann, T., Zohrabyan, H., Zomer, F., H1 Collaboration, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, H1, Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), and (ukupan broj autora: 257)
Subjects: Particle physics, Physics and Astronomy (miscellaneous), FOS: Physical sciences, Elementary particle, 7. Clean energy, 01 natural sciences, Standard Model, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], ddc:530, 010306 general physics, Engineering (miscellaneous), Boson, Physics, Muon, Luminosity (scattering theory), 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Fermion, HERA, High Energy Physics::Experiment, Lepton
Abstract: Events with high energy isolated electrons, muons or tau leptons and missing transverse momentum are studied using the full e^\pm p data sample collected by the H1 experiment at HERA, corresponding to an integrated luminosity of 474 pb^{-1}. Within the Standard Model, events with isolated leptons and missing transverse momentum mainly originate from the production of single W bosons. The total single W boson production cross section is measured as 1.14 \pm 0.25 (stat.) \pm 0.14 (sys.) pb, in agreement with the Standard Model expectation. The data are also used to establish limits on the WW\gamma gauge couplings and for a measurement of the W boson polarisation., Comment: 41 pages, 13 figures
Published: 2009
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16. A precision measurement of the inclusive ep scattering cross section at HERA

Author: Aaron, F. D., Alexa, C., Andreev, V., Antunovic, B., Asmone, A., Astvatsatourov, A., Backovic, S., Baghdasaryan, A., Barrelet, E., Bartel, W., Begzsuren, K., Belousov, A., Bizot, J. C., Boudry, V., Bozovic-Jelisavcic, I., Bracinik, J., Brandt, G., Brinkmann, M., Brisson, V., Bruncko, D., Bunyatyan, A., Buschhorn, G., Bystritskaya, L., Campbell, A. J., Cantun Avila, K. B., Cassol-Brunner, F., Cerny, K., Cerny, V., Chekelian, V., Cholewa, A., Contreras, J. G., Coughlan, J. A., Cozzika, G., Cvach, J., Dainton, J. B., Daum, K., Deák, M., de Boer, Y., Delcourt, B., Del Degan, M., Delvax, J., De Roeck, A., De Wolf, E. A., Diaconu, C., Dodonov, V., Dossanov, A., Dubak, A., Eckerlin, G., Efremenko, V., Egli, S., Eliseev, A., Elsen, E., Falkewicz, A., Faulkner, P. J. W., Favart, L., Fedotov, A., Felst, R., Feltesse, J., Ferencei, J., Fischer, D. J., Fleischer, M., Fomenko, A., Gabathuler, E., Gayler, J., Ghazaryan, S., Glazov, A., Glushkov, I., Goerlich, L., Göttlich, M., Gogitidze, N., Gouzevitch, M., Grab, C., Greenshaw, T., Grell, B. R., Grindhammer, G., Habib, S., Haidt, D., Helebrant, C., Henderson, R. C. W., Hennekemper, E., Henschel, H., Herbst, M., Herrera, G., Hildebrandt, M., Hiller, K. H., Hoffmann, D., Horisberger, R., Hreus, T., Jacquet, M., Janssen, M. E., Janssen, X., Jemanov, V., Jönsson, L., Jung, A. W., Jung, H., Kapichine, M., Katzy, J., Kenyon, I. R., Kiesling, C., Klein, M., Kleinwort, C., Kluge, T., Knutsson, A., Kogler, R., Korbel, V., Kostka, P., Kraemer, M., Krastev, K., Kretzschmar, J., Kropivnitskaya, A., Krüger, K., Kutak, K., Landon, M. P. J., Lange, W., Lastovicka-Medin, G., Laycock, P., Lebedev, A., Leibenguth, G., Lendermann, V., Levonian, S., Li, G., Lipka, K., Liptaj, A., List, B., List, J., Loktionova, N., Lopez-Fernandez, R., Lubimov, V., Lytkin, L., Makankine, A., Malinovski, E., Marage, P., Marti, Ll., Martyn, H.-U., Maxfield, S. J., Mehta, A., Meier, K., Meyer, A. B., Meyer, H., Meyer, J., Michels, V., Mikocki, S., Milcewicz-Mika, I., Moreau, F., Morozov, A., Morris, J. V., Mozer, M. U., Mudrinic, M., Müller, K., Murín, P., Naroska, B., Naumann, Th., Newman, P. R., Niebuhr, C., Nikiforov, A., Nowak, G., Nowak, K., Nozicka, M., Olivier, B., Olsson, J. E., Osman, S., Ozerov, D., Palichik, V., Panagoulias, I., Pandurovic, M., Papadopoulou, Th., Pascaud, C., Patel, G. D., Pejchal, O., Perez, E., Petrukhin, A., Picuric, I., Piec, S., Pitzl, D., Placakyte, R., Polifka, R., Povh, B., Preda, T., Radescu, V., Rahmat, A. J., Raicevic, N., Raspiareza, A., Ravdandorj, T., Reimer, P., Rizvi, E., Robmann, P., Roland, B., Roosen, R., Rostovtsev, A., Rotaru, M., Ruiz Tabasco, J. E., Rurikova, Z., Rusakov, S., Salek, D., Sankey, D. P. C., Sauter, M., Sauvan, E., Schmitt, S., Schmitz, C., Schoeffel, L., Schöning, A., Schultz-Coulon, H.-C., Sefkow, F., Shaw-West, R. N., Sheviakov, I., Shtarkov, L. N., Shushkevich, S., Sloan, T., Smiljanic, I., Soloviev, Y., Sopicki, P., South, D., Spaskov, V., Specka, A., Staykova, Z., Steder, M., Stella, B., Stoicea, G., Straumann, U., Sunar, D., Sykora, T., Tchoulakov, V., Thompson, G., Thompson, P. D., Toll, T., Tomasz, F., Tran, T. H., Traynor, D., Trinh, T. N., Truöl, P., Tsakov, I., Tseepeldorj, B., Turnau, J., Urban, K., Valkárová, A., Vallée, C., Van Mechelen, P., Vargas Trevino, A., Vazdik, Y., Vinokurova, S., Volchinski, V., von den Driesch, M., Wegener, D., Wallny, R., Wissing, Ch., Wünsch, E., Zácek, J., Zálesák, J., Zhang, Z., Zhokin, A., Zimmermann, T., Zohrabyan, H., Zomer, F., Zus, R., (ukupan broj autora: 255), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, H1, Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Particle physics, Physics and Astronomy (miscellaneous), Proton, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Parton, 01 natural sciences, 7. Clean energy, High Energy Physics - Experiment, law.invention, Nuclear physics, High Energy Physics - Experiment (hep-ex), Positron, law, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], ddc:530, 010306 general physics, Collider, Nuclear Experiment, Engineering (miscellaneous), Physics, Quantum chromodynamics, Neutral current, 010308 nuclear & particles physics, HERA, High Energy Physics::Experiment, Beam (structure)
Abstract: A measurement of the inclusive deep-inelastic neutral current e+p scattering cross section is reported in the region of four-momentum transfer squared, 12, Revised version, accepted by journal, 35 pages, 10 figures
Published: 2009

17. Measurement of Leading Neutron Production in Deep-Inelastic Scattering at HERA

Author: Aaron, F. D., Alexa, C., Alimujiang, K., Andreev, V., Antunovic, B., Backovic, S., Baghdasaryan, A., Barrelet, E., Bartel, W., Begzsuren, K., Belousov, A., Bizot, J. C., Boudry, V., Bozovic-Jelisavcic, I., Bracinik, J., Brandt, G., Brinkmann, M., Brisson, V., Bruncko, D., Bunyatyan, A., Buschhorn, G., Bystritskaya, L., Campbell, A. J., Cantun Avila, K. B., Cerny, K., Cerny, V., Chekelian, V., Cholewa, A., Contreras, J. G., Coughlan, J. A., Cozzika, G., Cvach, J., Dainton, J. B., Daum, K., Deák, M., Delcourt, B., Delvax, J., De Wolf, E. A., Diaconu, C., Dodonov, V., Dossanov, A., Dubak, A., Eckerlin, G., Efremenko, V., Egli, S., Eliseev, A., Elsen, E., Falkiewicz, A., Favart, L., Fedotov, A., Felst, R., Feltesse, J., Ferencei, J., Fischer, D. J., Fleischer, M., Fomenko, A., Gabathuler, E., Gayler, J., Ghazaryan, S., Glazov, A., Glushkov, I., Goerlich, L., Gogitidze, N., Gouzevitch, M., Grab, C., Greenshaw, T., Grell, B. R., Grindhammer, G., Habib, S., Haidt, D., Helebrant, C., Henderson, R. C. W., Hennekemper, E., Henschel, H., Herbst, M., Herrera, G., Hildebrandt, M., Hiller, K. H., Hoffmann, D., Horisberger, R., Hreus, T., Jacquet, M., Janssen, X., Jönsson, L., Jung, A. W., Jung, H., Kapichine, M., Katzy, J., Kenyon, I. R., Kiesling, C., Klein, M., Kleinwort, C., Kluge, T., Knutsson, A., Kogler, R., Kostka, P., Kraemer, M., Krastev, K., Kretzschmar, J., Kropivnitskaya, A., Krüger, K., Kutak, K., Landon, M. P. J., Lange, W., Lastovicka-Medin, G., Laycock, P., Lebedev, A., Lendermann, V., Levonian, S., Li, G., Lipka, K., Liptaj, A., List, B., List, J., Loktionova, N., Lopez-Fernandez, R., Lubimov, V., Lytkin, L., Makankine, A., Malinovski, E., Marage, P., Marti, Ll., Martyn, H.-U., Maxfield, S. J., Mehta, A., Meyer, A. B., Meyer, H., Meyer, J., Mikocki, S., Milcewicz-Mika, I., Moreau, F., Morozov, A., Morris, J. V., Mozer, M. U., Mudrinic, M., Müller, K., Murín, P., Naumann, Th., Newman, P. R., Niebuhr, C., Nikiforov, A., Nikitin, D., Nowak, G., Nowak, K., Olsson, J. E., Osman, S., Ozerov, D., Pahl, P., Palichik, V., Panagoulias, I., Pandurovic, M., Papadopoulou, Th., Pascaud, C., Patel, G. D., Pejchal, O., Perez, E., Petrukhin, A., Picuric, I., Piec, S., Pitzl, D., Placakyte, R., Pokorny, B., Polifka, R., Povh, B., Radescu, V., Rahmat, A. J., Raicevic, N., Raspiareza, A., Ravdandorj, T., Reimer, P., Rizvi, E., Robmann, P., Roland, B., Roosen, R., Rostovtsev, A., Rotaru, M., Ruiz Tabasco, J. E., Rusakov, S., Sálek, D., Sankey, D. P. C., Sauter, M., Sauvan, E., Schmitt, S., Schœffel, L., Schöning, A., Schultz-Coulon, H.-C., Sefkow, F., Shaw-West, R. N., Shtarkov, L. N., Shushkevich, S., Sloan, T., Smiljanic, I., Soloviev, Y., Sopicki, P., South, D., Spaskov, V., Specka, A., Staykova, Z., Steder, M., Stella, B., Stoicea, G., Straumann, U., Sunar, D., Sykora, T., Tchoulakov, V., Thompson, G., Thompson, P. D., Toll, T., Tomasz, F., Tran, T. H., Traynor, D., Trinh, T. N., Truöl, P., Tsakov, I., Tseepeldorj, B., Turnau, J., Urban, K., Valkárová, A., Vallée, C., Van Mechelen, P., Vargas Trevino, A., Vazdik, Y., Vinokurova, S., Volchinski, V., von den Driesch, M., Wegener, D., Wissing, Ch., Wünsch, E., Zácek, J., Zálesák, J., Zhang, Z., Zhokin, A., Zimmermann, T., Zohrabyan, H., Zomer, F., Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, H1, Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), (ukupan broj autora: 234), and H1 Collaboration
Subjects: Particle physics, Physics and Astronomy (miscellaneous), Proton, Meson, Astrophysics::High Energy Astrophysical Phenomena, Nuclear Theory, FOS: Physical sciences, Inelastic scattering, 7. Clean energy, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], ddc:530, Neutron, 010306 general physics, Nuclear Experiment, Engineering (miscellaneous), Physics, 010308 nuclear & particles physics, Scattering, HERA, Deep inelastic scattering, High Energy Physics::Experiment, Nucleon
Abstract: The production of leading neutrons, where the neutron carries a large fraction x_L of the incoming proton's longitudinal momentum, is studied in deep-inelastic positron-proton scattering at HERA. The data were taken with the H1 detector in the years 2006 and 2007 and correspond to an integrated luminosity of 122 pb^{-1}. The semi-inclusive cross section is measured in the phase space defined by the photon virtuality 6 < Q^2 < 100 GeV^2, Bjorken scaling variable 1.5x10^{-4} < x < 3x10^{-2}, longitudinal momentum fraction 0.32 < x_L < 0.95 and neutron transverse momentum p_T < 0.2 GeV. The leading neutron structure function, F_2^{LN(3)}(Q^2,x,x_L), and the fraction of deep-inelastic scattering events containing a leading neutron are studied as a function of Q^2, x and x_L. Assuming that the pion exchange mechanism dominates leading neutron production, the data provide constraints on the shape of the pion structure function., 30 pages, 9 figures
Published: 2009

18. Study of Charm Fragmentation into D^{*\pm} Mesons in Deep-Inelastic Scattering at HERA

Author: Aaron, F. D., Alexa, C., Barrelet, E., Jung, A. W., Jung, H., Kapichine, M., Katzy, J., Kenyon, I. R., Kiesling, C., Klein, M., Kleinwort, C., Klimkovich, T., Kluge, T., Bartel, W., Knutsson, A., Kogler, R., Korbel, V., Kostka, P., Kraemer, M., Krastev, K., Kretzschmar, J., Kropivnitskaya, A., Krüger, K., Kutak, K., Beckingham, M., Landon, M. P. J., Lange, W., Lastovicka-Medin, G., Laycock, P., Lebedev, A., Leibenguth, G., Lendermann, V., Levonian, S., Li, G., Lipka, K., Begzsuren, K., Liptaj, A., List, B., List, J., Loktionova, N., Lopez-Fernandez, R., Lubimov, V., Lucaci-Timoce, A.-I., Lytkin, L., Makankine, A., Malinovski, E., Behnke, O., Marage, P., Marti, Ll., Martyn, H.-U., Maxfield, S. J., Mehta, A., Meier, K., Meyer, A. B., Meyer, H., Meyer, J., Belousov, A., Michels, V., Mikocki, S., Milcewicz-Mika, I., Moreau, F., Morozov, A., Morris, J. V., Mozer, M. U., Mudrinic, M., Müller, K., Murín, P., Berger, N., Nankov, K., Naroska, B., Naumann, Th., Newman, P. R., Niebuhr, C., Nikiforov, A., Nowak, G., Nowak, K., Nozicka, M., Olivier, B., Bizot, J. C., Olsson, J. E., Osman, S., Ozerov, D., Palichik, V., Panagoulias, I., Pandurovic, M., Papadopoulou, Th., Pascaud, C., Patel, G. D., Pejchal, O., Boenig, M.-O., Peng, H., Perez, E., Petrukhin, A., Picuric, I., Piec, S., Pitzl, D., Placakyt\. e, R., Polifka, R., Povh, B., Preda, T., Boudry, V., Radescu, V., Rahmat, A. J., Raicevic, N., Raspiareza, A., Ravdandorj, T., Reimer, P., Rizvi, E., Robmann, P., Roland, B., Roosen, R., Andreev, V., Bozovic-Jelisavcic, I., Rostovtsev, A., Rotaru, M., Ruiz Tabasco, J. E., Rurikova, Z., Rusakov, S., Salek, D., Salvaire, F., Sankey, D. P. C., Sauter, M., Sauvan, E., Bracinik, J., Schmidt, S., Schmitt, S., Schmitz, C., Schoeffel, L., Schöning, A., Schultz-Coulon, H.-C., Sefkow, F., Shaw-West, R. N., Sheviakov, I., Shtarkov, L. N., Brandt, G., Shushkevich, S., Sloan, T., Smiljanic, I., Smirnov, P., Soloviev, Y., Sopicki, P., South, D., Spaskov, V., Specka, A., Staykova, Z., Brinkmann, M., Steder, M., Stella, B., Straumann, U., Sunar, D., Sykora, T., Tchoulakov, V., Thompson, G., Thompson, P. D., Toll, T., Tomasz, F., Brisson, V., Tran, T. H., Traynor, D., Trinh, T. N., Truöl, P., Tsakov, I., Tseepeldorj, B., Tsurin, I., Turnau, J., Tzamariudaki, E., Urban, K., Bruncko, D., Valkárová, A., Vallée, C., Van Mechelen, P., Vargas Trevino, A., Vazdik, Y., Vinokurova, S., Volchinski, V., Wegener, D., Wessels, M., Wissing, Ch., Bunyatyan, A., Wünsch, E., Yeganov, V., Zácek, J., Zálesák, J., Zhang, Z., Zhelezov, A., Zhokin, A., Zhu, Y. C., Zimmermann, T., Zohrabyan, H., Buschhorn, G., Zomer, F., H1 Collaboration, Bystritskaya, L., Campbell, A. J., Antunovic, B., Cantun Avila, K. B., Cassol-Brunner, F., Cerny, K., Cerny, V., Chekelian, V., Cholewa, A., Contreras, J. G., Coughlan, J. A., Cozzika, G., Cvach, J., Aplin, S., Dainton, J. B., Daum, K., Deák, M., de Boer, Y., Delcourt, B., Del Degan, M., Delvax, J., De Roeck, A., De Wolf, E. A., Diaconu, C., Asmone, A., Dodonov, V., Dossanov, A., Dubak, A., Eckerlin, G., Efremenko, V., Egli, S., Eliseev, A., Elsen, E., Essenov, S., Falkewicz, A., Astvatsatourov, A., Faulkner, P. J. W., Favart, L., Fedotov, A., Felst, R., Feltesse, J., Ferencei, J., Fleischer, M., Fomenko, A., Gabathuler, E., Gayler, J., Bacchetta, A., Ghazaryan, S., Glazov, A., Glushkov, I., Goerlich, L., Göttlich, M., Gogitidze, N., Gouzevitch, M., Grab, C., Greenshaw, T., Grell, B. R., Backovic, S., Grindhammer, G., Habib, S., Haidt, D., Hansson, M., Helebrant, C., Henderson, R. C. W., Hennekemper, E., Henschel, H., Herrera, G., Hildebrandt, M., Baghdasaryan, A., Hiller, K. H., Hoffmann, D., Horisberger, R., Hovhannisyan, A., Hreus, T., Jacquet, M., Janssen, M. E., Janssen, X., Jemanov, V., Jönsson, L., Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, H1, Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), (ukupan broj autora: 271), and H1 Collaboration
Subjects: Particle physics, Meson, Physics and Astronomy (miscellaneous), High Energy Physics::Lattice, Hadron, FOS: Physical sciences, Parton, 01 natural sciences, Charm quark, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], ddc:530, 010306 general physics, Nuclear Experiment, Engineering (miscellaneous), Physics, Quantum chromodynamics, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, HERA, Deep inelastic scattering, DGLAP, High Energy Physics::Experiment
Abstract: The process of charm quark fragmentation is studied using $D^{*\pm}$ meson production in deep-inelastic scattering as measured by the H1 detector at HERA. Two different regions of phase space are investigated defined by the presence or absence of a jet containing the $D^{*\pm}$ meson in the event. The parameters of fragmentation functions are extracted for QCD models based on leading order matrix elements and DGLAP or CCFM evolution of partons together with string fragmentation and particle decays. Additionally, they are determined for a next-to-leading order QCD calculation in the fixed flavour number scheme using the independent fragmentation of charm quarks to $D^{*\pm}$ mesons., 33 pages, submitted to EPJC
Published: 2008

19. Multi-Lepton Production at High Transverse Momenta in ep Collisions at HERA

Author: Aaron, F. D., Alexa, C., Andreev, V., Antunovic, B., Aplin, S., Asmone, A., Astvatsatourov, A., Bacchetta, A., Backovic, S., Baghdasaryan, A., Baranov, P., Barrelet, E., Bartel, W., Beckingham, M., Begzsuren, K., Behnke, O., Belousov, A., Berger, N., Bizot, J. C., Boenig, M.-O., Boudry, V., Bozovic-Jelisavcic, I., Bracinik, J., Brandt, G., Brinkmann, M., Brisson, V., Bruncko, D., Bunyatyan, A., Buschhorn, G., Bystritskaya, L., Campbell, A. J., Cantun Avila, K. B., Cassol-Brunner, F., Cerny, K., Cerny, V., Chekelian, V., Cholewa, A., Contreras, J. G., Coughlan, J. A., Cozzika, G., Cvach, J., Dainton, J. B., Daum, K., Deák, M., de Boer, Y., Delcourt, B., Del Degan, M., Delvax, J., De Roeck, A., De Wolf, E. A., Diaconu, C., Dodonov, V., Dossonov, A., Dubak, A., Eckerlin, G., Efremenko, V., Egli, S., Eliseev, A., Elsen, E., Essenov, S., Falkewicz, A., Faulkner, P. J. W., Favart, L., Fedotov, A., Felst, R., Feltesse, J., Ferencei, J., Finke, L., Fleischer, M., Fomenko, A., Gabathuler, E., Gayler, J., Ghazaryan, S., Glazov, A., Glushkov, I., Goerlich, L., Göttlich, M., Gogitidze, N., Gouzevitch, M., Grab, C., Greenshaw, T., Grell, B. R., Grindhammer, G., Habib, S., Haidt, D., Hansson, M., Helebrant, C., Henderson, R. C. W., Hennekemper, E., Henschel, H., Herrera, G., Hildebrandt, M., Hiller, K. H., Hoffmann, D., Horisberger, R., Hovhannisyan, A., Hreus, T., Jacquet, M., Janssen, M. E., Janssen, X., Jemanov, V., Jönsson, L., Johnson, D. P., Jung, A. W., Jung, H., Kapichine, M., Katzy, J., Kenyon, I. R., Kiesling, C., Klein, M., Kleinwort, C., Klimkovich, T., Kluge, T., Knutsson, A., Kogler, R., Korbel, V., Kostka, P., Kraemer, M., Krastev, K., Kretzschmar, J., Kropivnitskaya, A., Krüger, K., Kutak, K., Landon, M. P. J., Lange, W., Lastovicka-Medin, G., Laycock, P., Lebedev, A., Leibenguth, G., Lendermann, V., Levonian, S., Li, G., Lipka, K., Liptaj, A., List, B., List, J., Loktionova, N., Lopez-Fernandez, R., Lubimov, V., Lucaci-Timoce, A.-I., Lytkin, L., Makankine, A., Malinovski, E., Marage, P., Marti, Ll., Martyn, H.-U., Maxfield, S. J., Mehta, A., Meier, K., Meyer, A. B., Meyer, H., Meyer, J., Michels, V., Mikocki, S., Milcewicz-Mika, I., Moreau, F., Morozov, A., Morris, J. V., Mozer, M. U., Mudrinic, M., Müller, K., Murín, P., Nankov, K., Naroska, B., Naumann, Th., Newman, P. R., Niebuhr, C., Nikiforov, A., Nowak, G., Nowak, K., Nozicka, M., Olivier, B., Olsson, J. E., Osman, S., Ozerov, D., Palichik, V., Panagoulias, I., Pandurovic, M., Papadopoulou, Th., Pascaud, C., Patel, G. D., Pejchal, O., Peng, H., Perez, E., Petrukhin, A., Picuric, I., Piec, S., Pitzl, D., Placakyt\. e, R., Polifka, R., Povh, B., Preda, T., Radescu, V., Rahmat, A. J., Raicevic, N., Raspiareza, A., Ravdandorj, T., Reimer, P., Rizvi, E., Robmann, P., Roland, B., Roosen, R., Rostovtsev, A., Rotaru, M., Ruiz Tabasco, J. E., Rurikova, Z., Rusakov, S., Salek, D., Salvaire, F., Sankey, D. P. C., Sauter, M., Sauvan, E., Schmidt, S., Schmitt, S., Schmitz, C., Schoeffel, L., Schöning, A., Schultz-Coulon, H.-C., Sefkow, F., Shaw-West, R. N., Sheviakov, I., Shtarkov, L. N., Shushkevich, S., Sloan, T., Smiljanic, I., Smirnov, P., Soloviev, Y., Sopicki, P., South, D., Spaskov, V., Specka, A., Staykova, Z., Steder, M., Stella, B., Straumann, U., Sunar, D., Sykora, T., Tchoulakov, V., Thompson, G., Thompson, P. D., Toll, T., Tomasz, F., Tran, T. H., Traynor, D., Trinh, T. N., Truöl, P., Tsakov, I., Tseepeldorj, B., Tsurin, I., Turnau, J., Tzamariudaki, E., Urban, K., Valkárová, A., Vallée, C., Van Mechelen, P., Vargas Trevino, A., Vazdik, Y., Vinokurova, S., Volchinski, V., Wegener, D., Wessels, M., Wissing, Ch., Wünsch, E., Yeganov, V., Zácek, J., Zálesák, J., Zhang, Z., Zhelezov, A., Zhokin, A., Zhu, Y. C., Zimmermann, T., Zohrabyan, H., Zomer, F., H1 Collaboration, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, H1, Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), and (ukupan broj autora: 274)
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Muon, Luminosity (scattering theory), 010308 nuclear & particles physics, Scalar (mathematics), High Energy Physics::Phenomenology, FOS: Physical sciences, HERA, Electron, 01 natural sciences, Standard Model, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Phase space, 0103 physical sciences, Physique des particules élémentaires, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], ddc:530, High Energy Physics::Experiment, 010306 general physics, Lepton
Abstract: Processes leading to a final state with at least two high transverse momentum leptons (electrons or muons) are studied using the full e ± p data sample collected by the H1 experiment at HERA. The data correspond to an integrated luminosity of 463 pb -1. Di-lepton and tri-lepton event classes are investigated. Cross sections of the production of e + e - and μ + μ - pairs are derived in a restricted phase space dominated by photon-photon collisions. In general, good agreement is found with Standard Model predictions. Events are observed with a total scalar sum of lepton transverse momenta above 100 GeV where the Standard Model expectation is low. In this region, combining di-lepton and tri-lepton classes, five events are observed in e + p collisions, compared to a Standard Model expectation of 0.96 ± 0.12, while no such event is observed in e - p data for 0.64 ± 0.09 expected. © 2008 Elsevier B.V. All rights reserved., 0, DESY-08-065 / arxiv:0806.3987, SCOPUS: ar.j, info:eu-repo/semantics/published
Published: 2008
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20. A Search for Excited Neutrinos in $e^-p$ Collisions at HERA

Author: Aaron, F. D., Alexa, C., Andreev, V., Antunovic, B., Aplin, S., Asmone, A., Astvatsatourov, A., Backovic, S., Baghdasaryan, A., Baranov, P., Barrelet, E., Bartel, W., Baudrand, S., Beckingham, M., Begzsuren, K., Behnke, O., Belousov, A., Berger, N., Bizot, J. C., Boenig, M.-O., Boudry, V., Bozovic-Jelisavcic, I., Bracinik, J., Brandt, G., Brinkmann, M., Brisson, V., Bruncko, D., Bunyatyan, A., Buschhorn, G., Bystritskaya, L., Campbell, A. J., Cantun Avila, K. B., Cassol-Brunner, F., Cerny, K., Cerny, V., Chekelian, V., Cholewa, A., Contreras, J. G., Coughlan, J. A., Cozzika, G., Cvach, J., Dainton, J. B., Daum, K., Deák, M., de Boer, Y., Delcourt, B., Del Degan, M., Delvax, J., De Roeck, A., De Wolf, E. A., Diaconu, C., Dodonov, V., Dossonov, A., Dubak, A., Eckerlin, G., Efremenko, V., Egli, S., Eisele, F., Eliseev, A., Elsen, E., Essenov, S., Falkewicz, A., Faulkner, P. J. W., Favart, L., Fedotov, A., Felst, R., Feltesse, J., Ferencei, J., Finke, L., Fleischer, M., Fomenko, A., Franke, G., Frisson, T., Gabathuler, E., Gayler, J., Ghazaryan, S., Glazov, A., Glushkov, I., Goerlich, L., Göttlich, M., Gogitidze, N., Gouzevitch, M., Grab, C., Greenshaw, T., Grell, B. R., Grindhammer, G., Habib, S., Haidt, D., Hansson, M., Helebrant, C., Henderson, R. C. W., Henschel, H., Herrera, G., Hildebrandt, M., Hiller, K. H., Hoffmann, D., Horisberger, R., Hovhannisyan, A., Hreus, T., Jacquet, M., Janssen, M. E., Janssen, X., Jemanov, V., Jönsson, L., Johnson, D. P., Jung, A. W., Jung, H., Kapichine, M., Katzy, J., Kenyon, I. R., Kiesling, C., Klein, M., Kleinwort, C., Klimkovich, T., Kluge, T., Knutsson, A., Kogler, R., Korbel, V., Kostka, P., Kraemer, M., Krastev, K., Kretzschmar, J., Kropivnitskaya, A., Krüger, K., Kutak, K., Landon, M. P. J., Lange, W., Lastovicka-Medin, G., Laycock, P., Lebedev, A., Leibenguth, G., Lendermann, V., Levonian, S., Li, G., Lipka, K., Liptaj, A., List, B., List, J., Loktionova, N., Lopez-Fernandez, R., Lubimov, V., Lucaci-Timoce, A.-I., Lytkin, L., Makankine, A., Malinovski, E., Marage, P., Marti, Ll., Martyn, H.-U., Maxfield, S. J., Mehta, A., Meier, K., Meyer, A. B., Meyer, H., Meyer, J., Michels, V., Mikocki, S., Milcewicz-Mika, I., Moreau, F., Morozov, A., Morris, J. V., Mozer, M. U., Mudrinic, M., Müller, K., Murín, P., Nankov, K., Naroska, B., Naumann, Th., Newman, P. R., Niebuhr, C., Nikiforov, A., Nowak, G., Nowak, K., Nozicka, M., Oganezov, R., Olivier, B., Olsson, J. E., Osman, S., Ozerov, D., Palichik, V., Panagoulias, I., Pandurovic, M., Papadopoulou, Th., Pascaud, C., Patel, G. D., Pejchal, O., Peng, H., Perez, E., Petrukhin, A., Picuric, I., Piec, S., Pitzl, D., Placakyt\. e, R., Polifka, R., Povh, B., Preda, T., Radescu, V., Rahmat, A. J., Raicevic, N., Raspiareza, A., Ravdandorj, T., Reimer, P., Risler, C., Rizvi, E., Robmann, P., Roland, B., Roosen, R., Rostovtsev, A., Rotaru, M., Ruiz Tabasco, J. E., Rurikova, Z., Rusakov, S., Salek, D., Salvaire, F., Sankey, D. P. C., Sauter, M., Sauvan, E., Schmidt, S., Schmitt, S., Schmitz, C., Schoeffel, L., Schöning, A., Schultz-Coulon, H.-C., Sefkow, F., Shaw-West, R. N., Sheviakov, I., Shtarkov, L. N., Sloan, T., Smiljanic, I., Smirnov, P., Soloviev, Y., South, D., Spaskov, V., Specka, A., Staykova, Z., Steder, M., Stella, B., Straumann, U., Sunar, D., Sykora, T., Tchoulakov, V., Thompson, G., Thompson, P. D., Toll, T., Tomasz, F., Tran, T. H., Traynor, D., Trinh, T. N., Truöl, P., Tsakov, I., Tseepeldorj, B., Tsurin, I., Turnau, J., Tzamariudaki, E., Urban, K., Valkárová, A., Vallée, C., Van Mechelen, P., Vargas Trevino, A., Vazdik, Y., Vinokurova, S., Volchinski, V., Wegener, D., Wessels, M., Wissing, Ch., Wolf, R., Wünsch, E., Yeganov, V., Zácek, J., Zálesák, J., Zhang, Z., Zhelezov, A., Zhokin, A., Zhu, Y. C., Zimmermann, T., Zohrabyan, H., Zomer, F., Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée (DAPNIA), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), H1, Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), and (ukupan broj autora: 276)
Subjects: Physics, Nuclear and High Energy Physics, Gauge boson, Particle physics, 010308 nuclear & particles physics, Electroweak interaction, Hadron, High Energy Physics::Phenomenology, FOS: Physical sciences, HERA, 01 natural sciences, Luminosity, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Excited state, 0103 physical sciences, W′ and Z′ bosons, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Physique des particules élémentaires, High Energy Physics::Experiment, ddc:530, Neutrino, 010306 general physics
Abstract: A search for first generation excited neutrinos is performed using the full e - p data sample collected by the H1 experiment at HERA at a centre-of-mass energy of 319 GeV, corresponding to a total luminosity of 184 pb -1. The electroweak decays of excited neutrinos ν * → ν γ, ν * → ν Z and ν * → e W with subsequent hadronic or leptonic decays of the W and Z bosons are considered. No evidence for excited neutrino production is found. Mass dependent exclusion limits on ν * production cross sections and on the ratio of the coupling to the compositeness scale f / Λ are derived within gauge mediated models. A limit on f / Λ, independent of the relative couplings to the SU (2) and U (1) gauge bosons, is also determined. These limits extend the excluded region to higher masses than has been possible in previous excited neutrino searches. © 2008 Elsevier B.V. All rights reserved., 0, DESY-08-009 / arxiv:0802.1858, SCOPUS: ar.j, H1 Collaboration., info:eu-repo/semantics/published
Published: 2008

21. Production of $D^{*\pm}$ Mesons with Dijets in Deep-Inelastic Scattering at HERA

Author: Aktas, A., Andreev, V., Anthonis, T., Antunovic, B., Aplin, S., Asmone, A., Astvatsatourov, A., Babaev, A., Backovic, S., Baghdasaryan, A., Baranov, P., Barrelet, E., Bartel, W., Baudrand, S., Baumgartner, S., Beckingham, M., Behnke, O., Behrendt, O., Belousov, A., Berger, N., Bizot, J.C., Boenig, M.-O., Boudry, V., Bracinik, J., Brandt, G., Brisson, V., Bruncko, D., Busser, F.W., Bunyatyan, A., Buschhorn, G., Bystritskaya, L., Campbell, A.J., Cassol-Brunner, F., Cerny, K., Cerny, V., Chekelian, V., Contreras, J.G., Coughlan, J.A., Coppens, Y.R., Cox, B.E., Cozzika, G., Cvach, J., Dainton, J.B., Dau, W.D., Daum, K., de Boer, Y., Delcourt, B., del Degan, M., de Roeck, A., de Wolf, E.A., Diaconu, C., Dodonov, V., Dubak, A., Eckerlin, G., Efremenko, V., Egli, S., Eichler, R., Eisele, F., Eliseev, A., Elsen, E., Essenov, S., Falkewicz, A., Faulkner, P.J.W., Favart, L., Fedotov, A., Felst, R., Feltesse, J., Ferencei, J., Finke, L., Fleischer, M., Flucke, G., Fomenko, A., Franke, G., Frisson, T., Gabathuler, E., Garutti, E., Gayler, J., Gerlich, C., Ghazaryan, S., Ginzburgskaya, S., Glazov, A., Glushkov, I., Goerlich, L., Goettlich, M., Gogitidze, N., Gorbounov, S., Grab, C., Greenshaw, T., Gregori, M., Grell, B.R., Grindhammer, G., Gwilliam, C., Haidt, D., Hansson, M., Heinzelmann, G., Henderson, R.C.W., Henschel, H., Herrera, G., Hildebrandt, M., Hiller, K.H., Hoffmann, D., Horisberger, R., Hovhannisyan, A., Hreus, T., Hussain, S., Ibbotson, M., Ismail, M., Jacquet, M., Janssen, X., Jemanov, V., Jönsson, L., Johnson, C.L., Johnson, D.P., Jung, A.W., Jung, H., Kapichine, M., Katzy, J., Kenyon, I.R., Kiesling, C., Klein, M., Kleinwort, C., Klimkovich, T., Kluge, T., Knies, G., Knutsson, A., Korbel, V., Kostka, P., Krastev, K., Kretzschmar, J., Kropivnitskaya, A., Kruger, K., Landon, M.P.J., Lange, W., Lastovicka-Medin, G., Laycock, P., Lebedev, A., Leibenguth, G., Lendermann, V., Levonian, S., Lindfeld, L., Lipka, K., Liptaj, A., List, B., List, J., Lobodzinska, E., Loktionova, N., Lopez-Fernandez, R., Lubimov, V., Lucaci-Timoce, A.-I., Lueders, H., Lux, T., Lytkin, L., Makankine, A., Malden, N., Malinovski, E., Marage, P., Marshall, R., Marti, L., Martisikova, M., Martyn, H.-U., Maxfield, S.J., Mehta, A., Meier, K., Meyer, A.B., Meyer, H., Meyer, J., Michels, V., Mikocki, S., Milcewicz-Mika, I., Milstead, D., Mladenov, D., Mohamed, A., Moreau, F., Morozov, A., Morris, J.V., Mozer, M.U., Muller, K., Murin, P., Nankov, K., Naroska, B., Naumann, T., Newman, P.R., Niebuhr, C., Nikiforov, A., Nowak, G., Nowak, K., Nozicka, M., Oganezov, R., Olivier, B., Olsson, J.E., Osman, S., Ozerov, D., Palichik, V., Panagoulias, I., Papadopoulou, T., Pascaud, C., Patel, G.D., Peng, H., Perez, Emile, Perez-Astudillo, D., Perieanu, A., Petrukhin, A., Pitzl, D., Placakyte, R., Portheault, B., Povh, B., Prideaux, P., Rahmat, A.J., Raicevic, N., Reimer, P., Rimmer, A., Risler, C., Rizvi, E., Robmann, P., Roland, B., Roosen, R., Rostovtsev, A., Rurikova, Z., Rusakov, S., Salvaire, F., Sankey, D.P.C., Sauter, M., Sauvan, E., Sch¨atzel, S., Schilling, F.-P., Schmidt, S., Schmitt, S., Schmitz, C., Schoeffel, L., Schoning, A., Schultz-Coulon, H.-C., Sefkow, F., Shaw-West, R.N., Sheviakov, I., Shtarkov, L.N., Sloan, T., Smirnov, P., Soloviev, Y., South, D., Spaskov, V., Specka, A., Steder, M., Stella, B., Stiewe, J., Stoilov, A., Straumann, U., Sunar, D., Tchoulakov, V., Thompson, G., Thompson, P.D., Toll, T., Tomasz, F., Traynor, D., Trinh, T.N., Truol, P., Tsakov, I., Tsipolitis, G., Tsurin, I., Turnau, J., Tzamariudaki, E., Urban, K., Urban, Martin, Usik, A., Utkin, D., Valkarova, A., Vallee, C., van Mechelen, P., Vargas Trevino, A., Vazdik, Y., Veelken, C., Vinokurova, S., Volchinski, V., Wacker, K., Weber, G., Weber, R., Wegener, D., Werner, C., Wessels, M., Wessling, B., Wissing, C., Wolf, R., Wünsch, E., Xella, S., Yan, W., Yeganov, V., Zacek, J., Zalesak, J., Zhang, Zhiqing, Zhelezov, A., Zhokin, A., Zhu, Y.C., Zimmermann, J., Zimmermann, T., Zohrabyan, H., Zomer, F., Gouzevitch, M., Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée (DAPNIA), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), H1, Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS)
Subjects: High Energy Physics - Experiment (hep-ex), High Energy Physics::Phenomenology, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], FOS: Physical sciences, ddc:530, High Energy Physics::Experiment, Nuclear Experiment, High Energy Physics - Experiment
Abstract: Inclusive D* production is measured in deep-inelastic ep scattering at HERA with the H1 detector. In addition, the production of dijets in events with a D* meson is investigated. The analysis covers values of photon virtuality 2< Q^2, 31 pages, 7 figures
Published: 2007

22. Measurement of inclusive jet production in deep-inelastic scattering at high Q2 and determination of the strong coupling

Author: Aktas, A., Alexa, C., Andreev, V., Anthonis, T., Antunovic, B., Aplin, S., Asmone, A., Astvatsatourov, A., Backovic, S., Baghdasaryan, A., Baranov, P., Barrelet, E., Bartel, W., Baudrand, S., Beckingham, M., Begzsuren, K., Behnke, O., Behrendt, O., Belousov, A., Berger, N., Bizot, J. C., Boenig, M.-O., Boudry, V., Bozovic-Jelisavcic, I., Bracinik, J., Brandt, G., Brinkmann, M., Brisson, V., Bruncko, D., Büsser, F. W., Bunyatyan, A., Buschhorn, G., Bystritskaya, L., Campbell, A. J., Cantun Avila, K. B., Cassol-Brunner, F., Cerny, K., Cerny, V., Chekelian, V., Cholewa, A., Contreras, J. G., Coughlan, J. A., Cozzika, G., Cvach, J., Dainton, J. B., Daum, K., Deak, M., de Boer, Y., Delcourt, B., Del Degan, M., Delvax, J., De Roeck, A., De Wolf, E. A., Diaconu, C., Dodonov, V., Dubak, A., Eckerlin, G., Efremenko, V., Egli, S., Eichler, R., Eisele, F., Eliseev, A., Elsen, E., Essenov, S., Falkewicz, A., Faulkner, P. J. W., Favart, L., Fedotov, A., Felst, R., Feltesse, J., Ferencei, J., Finke, L., Fleischer, M., Fomenko, A., Franke, G., Frisson, T., Gabathuler, E., Gayler, J., Ghazaryan, S., Ginzburgskaya, S., Glazov, A., Glushkov, I., Goerlich, L., Göttlich, M., Gogitidze, N., Gorbounov, S., Gouzevitch, M., Grab, C., Greenshaw, T., Grell, B. R., Grindhammer, G., Habib, S., Haidt, D., Hansson, M., Heinzelmann, G., Helebrant, C., Henderson, R. C. W., Henschel, H., Herrera, G., Hildebrandt, M., Hiller, K. H., Hoffmann, D., Horisberger, R., Hovhannisyan, A., Hreus, T., Jacquet, M., Janssen, M. E., Janssen, X., Jemanov, V., Jönsson, L., Johnson, D. P., Jung, A. W., Jung, H., Kapichine, M., Katzy, J., Kenyon, I. R., Kiesling, C., Klein, M., Kleinwort, C., Klimkovich, T., Kluge, T., Knutsson, A., Korbel, V., Kostka, P., Kraemer, M., Krastev, K., Kretzschmar, J., Kropivnitskaya, A., Krüger, K., Landon, M. P. J., Lange, W., Lastovicka-Medin, G., Laycock, P., Lebedev, A., Leibenguth, G., Lendermann, V., Levonian, S., Li, G., Lindfeld, L., Lipka, K., Liptaj, A., List, B., List, J., Loktionova, N., Lopez-Fernandez, R., Lubimov, V., Lucaci-Timoce, A.-I., Lytkin, L., Makankine, A., Malinovski, E., Marage, P., Marti, Ll., Martisikova, M., Martyn, H.-U., Maxfield, S. J., Mehta, A., Meier, K., Meyer, A. B., Meyer, H., Meyer, J., Michels, V., Mikocki, S., Milcewicz-Mika, I., Mohamed, A., Moreau, F., Morozov, A., Morris, J. V., Mozer, M. U., Müller, K., Murín, P., Nankov, K., Naroska, B., Naumann, Th., Newman, P. R., Niebuhr, C., Nikiforov, A., Nowak, G., Nowak, K., Nozicka, M., Oganezov, R., Olivier, B., Olsson, J. E., Osman, S., Ozerov, D., Palichik, V., Panagoulias, I., Pandurovic, M., Papadopoulou, Th., Pascaud, C., Patel, G. D., Peng, H., Perez, E., Perez-Astudillo, D., Perieanu, A., Petrukhin, A., Picuric, I., Piec, S., Pitzl, D., Placakyt\. e, R., Povh, B., Preda, T., Prideaux, P., Radescu, V., Rahmat, A. J., Raicevic, N., Ravdandorj, T., Reimer, P., Risler, C., Rizvi, E., Robmann, P., Roland, B., Roosen, R., Rostovtsev, A., Rurikova, Z., Rusakov, S., Salvaire, F., Sankey, D. P. C., Sauter, M., Sauvan, E., Schmidt, S., Schmitt, S., Schmitz, C., Schoeffel, L., Schöning, A., Schultz-Coulon, H.-C., Sefkow, F., Shaw-West, R. N., Sheviakov, I., Shtarkov, L. N., Sloan, T., Smiljanic, I., Smirnov, P., Soloviev, Y., South, D., Spaskov, V., Specka, A., Staykova, Z., Steder, M., Stella, B., Stiewe, J., Straumann, U., Sunar, D., Sykora, T., Tchoulakov, V., Thompson, G., Thompson, P. D., Toll, T., Tomasz, F., Tran, T. H., Traynor, D., Trinh, T. N., Truöl, P., Tsakov, I., Tseepeldorj, B., Tsipolitis, G., Tsurin, I., Turnau, J., Tzamariudaki, E., Urban, K., Utkin, D., Valkárová, A., Vallée, C., Van Mechelen, P., Vargas Trevino, A., Vazdik, Y., Vinokurova, S., Volchinski, V., Weber, G., Weber, R., Wegener, D., Werner, C., Wessels, M., Wissing, Ch., Wolf, R., Wünsch, E., Xella, S., Yan, W., Yeganov, V., Zácek, J., Zálesák, J., Zhang, Z., Zhelezov, A., Zhokin, A., Zhu, Y. C., Zimmermann, T., Zohrabyan, H., Zomer, F., Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée (DAPNIA), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), H1, Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), and Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)
Subjects: High Energy Physics - Experiment (hep-ex), High Energy Physics::Phenomenology, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], FOS: Physical sciences, ddc:530, High Energy Physics::Experiment, High Energy Physics - Experiment
Abstract: Inclusive jet production is studied in neutral current deep-inelastic positron-proton scattering at large four momentum transfer squared Q^2>150 GeV^2 with the H1 detector at HERA. Single and double differential inclusive jet cross sections are measured as a function of Q^2 and of the transverse energy E_T of the jets in the Breit frame. The measurements are found to be well described by calculations at next-to-leading order in perturbative QCD. The running of the strong coupling is demonstrated and the value of alpha_s(M_Z) is determined. The ratio of the inclusive jet cross section to the inclusive neutral current cross section is also measured and used to extract a precise value for alpha_s(M_Z)=0.1193+/-0.0014(exp.)^{+0.0047}_{-0.0030}(th.)+/-0.0016(pdf)., 21 pages, 7 figures, submitted to Phys. Lett. B
Published: 2007

23. Tau Lepton Production in $ep$ Collisions at HERA

Author: Aktas, A., Andreev, V., Anthonis, T., Aplin, S., Asmone, A., Astvatsatourov, A., Babaev, A., Backovic, S., Bahr, J., Baghdasaryan, A., Baranov, P., Barrelet, E., Bartel, W., Baudrand, S., Baumgartner, S., Becker, J., Beckingham, M., Behnke, O., Behrendt, O., Belousov, A., Berger, Ch., Berger, N., Bizot, J.C., Boenig, M.-O., Boudry, V., Bracinik, J., Brandt, G., Brisson, V., Brown, D.P., Bruncko, D., Busser, F.W., Bunyatyan, A., Buschhorn, G., Bystritskaya, L., Campbell, A.J., Caron, S., Cassol-Brunner, F., Cerny, K., Cerny, V., Chekelian, V., Contreras, J.G., Coughlan, J.A., Cox, B.E., Cozzika, G., Cvach, J., Dainton, J.B., Dau, W.D., Daum, K., De Boer, Y., Delcourt, B., De Roeck, A., Desch, K., De Wolf, E.A., Diaconu, C., Dodonov, V., Dubak, A., Eckerlin, G., Efremenko, V., Egli, S., Eichler, R., Eisele, F., Ellerbrock, M., Erdmann, W., Essenov, S., Falkewicz, A., Faulkner, P.J.W., Favart, L., Fedotov, A., Felst, R., Ferencei, J., Finke, L., Fleischer, M., Fleischmann, P., Fleming, Y.H., Flucke, G., Fomenko, A., Foresti, I., Franke, G., Frisson, T., Gabathuler, E., Garutti, E., Gayler, J., Gerlich, C., Ghazaryan, S., Ginzburgskaya, S., Glazov, A., Glushkov, I., Goerlich, L., Goettlich, M., Gogitidze, N., Gorbounov, S., Goyon, C., Grab, C., Greenshaw, T., Gregori, M., Grell, B.R., Grindhammer, G., Gwilliam, C., Haidt, D., Hajduk, L., Hansson, M., Heinzelmann, G., Henderson, R.C.W., Henschel, H., Henshaw, O., Herrera, G., Hildebrandt, M., Hiller, K.H., Hoffmann, D., Horisberger, R., Hovhannisyan, A., Hreus, T., Hussain, S., Ibbotson, M., Ismail, M., Jacquet, M., Janauschek, L., Janssen, X., Jemanov, V., Jonsson, L., Johnson, D.P., Jung, A.W., Jung, H., Kapichine, M., Katzy, J., Keller, N., Kenyon, I.R., Kiesling, C., Klein, M., Kleinwort, C., Klimkovich, T., Kluge, T., Knies, G., Knutsson, A., Korbel, V., Kostka, P., Krastev, K., Kretzschmar, J., Kropivnitskaya, A., Kruger, K., Kuckens, J., Landon, M.P.J., Lange, W., Lastovicka, T., Lastovicka-Medin, G., Laycock, P., Lebedev, A., Leibenguth, G., Lendermann, V., Levonian, S., Lindfeld, L., Lipka, K., Liptaj, A., List, B., Lobodzinska, E., Loktionova, N., Lopez-Fernandez, R., Lubimov, V., Lucaci-Timoce, A.-I., Lueders, H., Luke, D., Lux, T., Lytkin, L., Makankine, A., Malden, N., Malinovski, E., Mangano, S., Marage, P., Marshall, R., Martisikova, M., Martyn, H.-U., Maxfield, S.J., Meer, D., Mehta, A., Meier, K., Meyer, A.B., Meyer, H., Meyer, J., Mikocki, S., Milcewicz-Mika, I., Milstead, D., Mladenov, D., Mohamed, A., Moreau, F., Morozov, A., Morris, J.V., Mozer, M.U., Muller, K., Murin, P., Nankov, K., Naroska, B., Naumann, T., Newman, P.R., Niebuhr, C., Nikiforov, A., Nikitin, D., Nowak, G., Nozicka, M., Oganezov, R., Olivier, B., Olsson, J.E., Osman, S., Ozerov, D., Palichik, V., Panagoulias, I., Papadopoulou, T., Pascaud, C., Patel, G.D., Peez, M., Perez, Emile, Perez-Astudillo, D., Perieanu, A., Petrukhin, A., Pitzl, D., Placakyte, R., Portheault, B., Povh, B., Prideaux, P., Raicevic, N., Reimer, P., Rimmer, A., Risler, C., Rizvi, E., Robmann, P., Roland, B., Roosen, R., Rostovtsev, A., Rurikova, Z., Rusakov, S., Salvaire, F., Sankey, D.P.C., Sauvan, E., Schätzel, S., Schilling, F.-P., Schmidt, S., Schmitt, S., Schmitz, C., Schoeffel, L., Schoning, A., Schultz-Coulon, H.-C., Sedlak, K., Sefkow, F., Shaw-West, R.N., Sheviakov, I., Shtarkov, L.N., Sloan, T., Smirnov, P., Soloviev, Y., South, D., Spaskov, V., Specka, A., Stella, B., Stiewe, J., Strauch, I., Straumann, U., Tchoulakov, V., Thompson, G., Thompson, P.D., Tomasz, F., Traynor, D., Truol, P., Tsakov, I., Tsipolitis, G., Tsurin, I., Turnau, J., Tzamariudaki, E., Urban, Martin, Usik, A., Utkin, D., Valkar, S., Valkarova, A., Vallee, C., Van Mechelen, P., Vargas Trevino, A., Vazdik, Y., Veelken, C., Vest, A., Vinokurova, S., Volchinski, V., Vujicic, B., Wacker, K., Wagner, J., Weber, G., Weber, R., Wegener, D., Werner, C., Werner, N., Wessels, M., Wessling, B., Wigmore, C., Wissing, C., Wolf, R., Wunsch, E., Xella, S., Yan, W., Yeganov, V., Zacek, J., Zalesak, J., Zhang, Zhiqing, Zhelezov, A., Zhokin, A., Zhu, Y.C., Zimmermann, J., Zimmermann, T., Zohrabyan, H., Zomer, F., Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), H1, Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), and H1 Collaboration
Subjects: Physics, Hadronic decay, Particle physics, Physics and Astronomy (miscellaneous), 010308 nuclear & particles physics, High Energy Physics::Phenomenology, FOS: Physical sciences, HERA, 7. Clean energy, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Standard Model (mathematical formulation), 0103 physical sciences, Transverse momentum, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], ddc:530, High Energy Physics::Experiment, 010306 general physics, Engineering (miscellaneous), Lepton
Abstract: The production of tau leptons in ep collisions is investigated using data recorded by the H1 detector at HERA in the period 1994-2000. Tau leptons are identified by detecting their decay products, using leptonic and hadronic decay modes. The cross section for the production of tau lepton pairs is measured for the first time at HERA. Furthermore, a search for events with an energetic isolated tau lepton and with large missing transverse momentum is performed. The results are found to be in agreement with the Standard Model predictions., Comment: 28 pages, 6 figures, 6 tables
Published: 2006

24. Measurement and QCD Analysis of the Diffractive Deep-Inelastic Scattering Cross Section at HERA

Author: Aktas, A., Andreev, V., Anthonis, T., Aplin, S., Asmone, A., Astvatsatourov, A., Babaev, A., Backovic, S., Bahr, J., Baghdasaryan, A., Baranov, P., Barrelet, E., Bartel, W., Baudrand, S., Baumgartner, S., Becker, J., Beckingham, M., Behnke, O., Behrendt, O., Belousov, A., Berger, Ch., Berger, N., Bizot, J.C., Boenig, M.-O., Boudry, V., Bracinik, J., Brandt, G., Brisson, V., Brown, D.P., Bruncko, D., Busser, F.W., Bunyatyan, A., Buschhorn, G., Bystritskaya, L., Campbell, A.J., Caron, S., Cassol-Brunner, F., Cerny, K., Cerny, V., Chekelian, V., Contreras, J.G., Coughlan, J.A., Cox, B.E., Cozzika, G., Cvach, J., Dainton, J.B., Dau, W.D., Daum, K., de Boer, Y., Delcourt, B., de Roeck, A., Desch, K., de Wolf, E.A., Diaconu, C., Dodonov, V., Dubak, A., Eckerlin, G., Efremenko, V., Egli, S., Eichler, R., Eisele, F., Ellerbrock, M., Erdmann, W., Essenov, S., Falkewicz, A., Faulkner, P.J.W., Favart, L., Fedotov, A., Felst, R., Ferencei, J., Finke, L., Fleischer, M., Fleischmann, P., Fleming, Y.H., Flucke, G., Fomenko, A., Foresti, I., Franke, G., Frisson, T., Gabathuler, E., Garutti, E., Gayler, J., Gerlich, C., Ghazaryan, S., Ginzburgskaya, S., Glazov, A., Glushkov, I., Goerlich, L., Goettlich, M., Gogitidze, N., Gorbounov, S., Goyon, C., Grab, C., Greenshaw, T., Gregori, M., Grell, B.R., Grindhammer, G., Gwilliam, C., Haidt, D., Hajduk, L., Hansson, M., Heinzelmann, G., Henderson, R.C.W., Henschel, H., Henshaw, O., Herrera, G., Hildebrandt, M., Hiller, K.H., Hoffmann, D., Horisberger, R., Hovhannisyan, A., Hreus, T., Hussain, S., Ibbotson, M., Ismail, M., Jacquet, M., Janauschek, L., Janssen, X., Jemanov, V., Jonsson, L., Johnson, D.P., Jung, A.W., Jung, H., Kapichine, M., Katzy, J., Keller, N., Kenyon, I.R., Kiesling, C., Klein, M., Kleinwort, C., Klimkovich, T., Kluge, T., Knies, G., Knutsson, A., Korbel, V., Kostka, P., Krastev, K., Kretzschmar, J., Kropivnitskaya, A., Kruger, K., Kuckens, J., Landon, M.P.J., Lange, W., Lastovicka, T., Lastovicka-Medin, G., Laycock, P., Lebedev, A., Leibenguth, G., Lendermann, V., Levonian, S., Lindfeld, L., Lipka, K., Liptaj, A., List, B., Lobodzinska, E., Loktionova, N., Lopez-Fernandez, R., Lubimov, V., Lucaci-Timoce, A.-I., Lueders, H., Luke, D., Lux, T., Lytkin, L., Makankine, A., Malden, N., Malinovski, E., Mangano, S., Marage, P., Marshall, R., Martisikova, M., Martyn, H.-U., Maxfield, S.J., Meer, D., Mehta, A., Meier, K., Meyer, A.B., Meyer, H., Meyer, J., Mikocki, S., Milcewicz-Mika, I., Milstead, D., Mladenov, D., Mohamed, A., Moreau, F., Morozov, A., Morris, J.V., Mozer, M.U., Muller, K., Murin, P., Nankov, K., Naroska, B., Naumann, T., Newman, P.R., Niebuhr, C., Nikiforov, A., Nikitin, D., Nowak, G., Nozicka, M., Oganezov, R., Olivier, B., Olsson, J.E., Osman, S., Ozerov, D., Palichik, V., Panagoulias, I., Papadopoulou, T., Pascaud, C., Patel, G.D., Peez, M., Perez, Emile, Perez-Astudillo, D., Perieanu, A., Petrukhin, A., Pitzl, D., Placakyte, R., Portheault, B., Povh, B., Prideaux, P., Raicevic, N., Reimer, P., Rimmer, A., Risler, C., Rizvi, E., Robmann, P., Roland, B., Roosen, R., Rostovtsev, A., Rurikova, Z., Rusakov, S., Salvaire, F., Sankey, D.P.C., Sauvan, E., Schätzel, S., Schilling, F.-P., Schmidt, S., Schmitt, S., Schmitz, C., Schoeffel, L., Schoning, A., Schultz-Coulon, H.-C., Sedlak, K., Sefkow, F., Shaw-West, R.N., Sheviakov, I., Shtarkov, L.N., Sloan, T., Smirnov, P., Soloviev, Y., South, D., Spaskov, V., Specka, A., Stella, B., Stiewe, J., Strauch, I., Straumann, U., Tchoulakov, V., Thompson, G., Thompson, P.D., Tomasz, F., Traynor, D., Truol, P., Tsakov, I., Tsipolitis, G., Tsurin, I., Turnau, J., Tzamariudaki, E., Urban, Martin, Usik, A., Utkin, D., Valkar, S., Valkarova, A., Vallee, C., van Mechelen, P., Vargas Trevino, A., Vazdik, Y., Veelken, C., Vest, A., Vinokurova, S., Volchinski, V., Vujicic, B., Wacker, K., Wagner, J., Weber, G., Weber, R., Wegener, D., Werner, C., Werner, N., Wessels, M., Wessling, B., Wigmore, C., Wissing, C., Wolf, R., Wunsch, E., Xella, S., Yan, W., Yeganov, V., Zacek, J., Zalesak, J., Zhang, Zhiqing, Zhelezov, A., Zhokin, A., Zhu, Y.C., Zimmermann, J., Zimmermann, T., Zohrabyan, H., Zomer, F., Trinh, T.N., Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), H1, Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), and H1 Collaboration
Subjects: Quantum chromodynamics, Physics, Particle physics, Physics and Astronomy (miscellaneous), 010308 nuclear & particles physics, FOS: Physical sciences, Parton, HERA, Deep inelastic scattering, 01 natural sciences, 7. Clean energy, High Energy Physics - Experiment, Gluon, Nuclear physics, Pomeron, High Energy Physics - Experiment (hep-ex), DGLAP, Distribution function, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], ddc:530, 010306 general physics, Engineering (miscellaneous)
Abstract: A detailed analysis is presented of the diffractive deep-inelastic scattering process $ep\to eXY$, where $Y$ is a proton or a low mass proton excitation carrying a fraction $1 - \xpom > 0.95$ of the incident proton longitudinal momentum and the squared four-momentum transfer at the proton vertex satisfies $|t, Comment: 59 pages, 19 figures, 6 tables
Published: 2006
Full Text: View/download PDF

25. Search for a Narrow Baryonic Resonance Decaying to $K^0_s p$ or $K^0_s \bar{p}$ in Deep Inelastic Scattering at HERA

Author: Aktas, A., Andreev, V., Anthonis, T., Aplin, S., Asmone, A., Astvatsatourov, A., Babaev, A., Backovic, S., Bahr, J., Baghdasaryan, A., Baranov, P., Barrelet, E., Bartel, W., Baudrand, S., Baumgartner, S., Becker, J., Beckingham, M., Behnke, O., Behrendt, O., Belousov, A., Berger, Ch., Berger, N., Bizot, J.C., Boenig, M.-O., Boudry, V., Bracinik, J., Brandt, G., Brisson, V., Brown, D.P., Bruncko, D., Busser, F.W., Bunyatyan, A., Buschhorn, G., Bystritskaya, L., Campbell, A.J., Caron, S., Cassol-Brunner, F., Cerny, K., Cerny, V., Chekelian, V., Contreras, J.G., Coughlan, J.A., Cox, B.E., Cozzika, G., Cvach, J., Dainton, J.B., Dau, W.D., Daum, K., de Boer, Y., Delcourt, B., de Roeck, A., Desch, K., de Wolf, E.A., Diaconu, C., Dodonov, V., Dubak, A., Eckerlin, G., Efremenko, V., Egli, S., Eichler, R., Eisele, F., Ellerbrock, M., Erdmann, W., Essenov, S., Falkewicz, A., Faulkner, P.J.W., Favart, L., Fedotov, A., Felst, R., Ferencei, J., Finke, L., Fleischer, M., Fleischmann, P., Fleming, Y.H., Flucke, G., Fomenko, A., Foresti, I., Franke, G., Frisson, T., Gabathuler, E., Garutti, E., Gayler, J., Gerlich, C., Ghazaryan, S., Ginzburgskaya, S., Glazov, A., Glushkov, I., Goerlich, L., Goettlich, M., Gogitidze, N., Gorbounov, S., Goyon, C., Grab, C., Greenshaw, T., Gregori, M., Grell, B.R., Grindhammer, G., Gwilliam, C., Haidt, D., Hajduk, L., Hansson, M., Heinzelmann, G., Henderson, R.C.W., Henschel, H., Henshaw, O., Herrera, G., Hildebrandt, M., Hiller, K.H., Hoffmann, D., Horisberger, R., Hovhannisyan, A., Hreus, T., Hussain, S., Ibbotson, M., Ismail, M., Jacquet, M., Janauschek, L., Janssen, X., Jemanov, V., Jonsson, L., Johnson, D.P., Jung, A.W., Jung, H., Kapichine, M., Katzy, J., Keller, N., Kenyon, I.R., Kiesling, C., Klein, M., Kleinwort, C., Klimkovich, T., Kluge, T., Knies, G., Knutsson, A., Korbel, V., Kostka, P., Krastev, K., Kretzschmar, J., Kropivnitskaya, A., Kruger, K., Kuckens, J., Landon, M.P.J., Lange, W., Lastovicka, T., Lastovicka-Medin, G., Laycock, P., Lebedev, A., Leibenguth, G., Lendermann, V., Levonian, S., Lindfeld, L., Lipka, K., Liptaj, A., List, B., Lobodzinska, E., Loktionova, N., Lopez-Fernandez, R., Lubimov, V., Lucaci-Timoce, A.-I., Lueders, H., Luke, D., Lux, T., Lytkin, L., Makankine, A., Malden, N., Malinovski, E., Mangano, S., Marage, P., Marshall, R., Martisikova, M., Martyn, H.-U., Maxfield, S.J., Meer, D., Mehta, A., Meier, K., Meyer, A.B., Meyer, H., Meyer, J., Mikocki, S., Milcewicz-Mika, I., Milstead, D., Mladenov, D., Mohamed, A., Moreau, F., Morozov, A., Morris, J.V., Mozer, M.U., Muller, K., Murin, P., Nankov, K., Naroska, B., Naumann, T., Newman, P.R., Niebuhr, C., Nikiforov, A., Nikitin, D., Nowak, G., Nozicka, M., Oganezov, R., Olivier, B., Olsson, J.E., Osman, S., Ozerov, D., Palichik, V., Panagoulias, I., Papadopoulou, T., Pascaud, C., Patel, G.D., Peez, M., Perez, Emile, Perez-Astudillo, D., Perieanu, A., Petrukhin, A., Pitzl, D., Placakyte, R., Portheault, B., Povh, B., Prideaux, P., Raicevic, N., Reimer, P., Rimmer, A., Risler, C., Rizvi, E., Robmann, P., Roland, B., Roosen, R., Rostovtsev, A., Rurikova, Z., Rusakov, S., Salvaire, F., Sankey, D.P.C., Sauvan, E., Schätzel, S., Schilling, F.-P., Schmidt, S., Schmitt, S., Schmitz, C., Schoeffel, L., Schoning, A., Schultz-Coulon, H.-C., Sedlak, K., Sefkow, F., Shaw-West, R.N., Sheviakov, I., Shtarkov, L.N., Sloan, T., Smirnov, P., Soloviev, Y., South, D., Spaskov, V., Specka, A., Stella, B., Stiewe, J., Strauch, I., Straumann, U., Tchoulakov, V., Thompson, G., Thompson, P.D., Tomasz, F., Traynor, D., Truol, P., Tsakov, I., Tsipolitis, G., Tsurin, I., Turnau, J., Tzamariudaki, E., Urban, Martin, Usik, A., Utkin, D., Valkar, S., Valkarova, A., Vallee, C., van Mechelen, P., Vargas Trevino, A., Vazdik, Y., Veelken, C., Vest, A., Vinokurova, S., Volchinski, V., Vujicic, B., Wacker, K., Wagner, J., Weber, G., Weber, R., Wegener, D., Werner, C., Werner, N., Wessels, M., Wessling, B., Wigmore, C., Wissing, C., Wolf, R., Wunsch, E., Xella, S., Yan, W., Yeganov, V., Zacek, J., Zalesak, J., Zhang, Zhiqing, Zhelezov, A., Zhokin, A., Zhu, Y.C., Zimmermann, J., Zimmermann, T., Zohrabyan, H., Zomer, F., Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), H1, Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS)
Subjects: High Energy Physics - Experiment (hep-ex), [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], FOS: Physical sciences, High Energy Physics::Experiment, High Energy Physics - Experiment
Abstract: A search for a narrow baryonic resonance decaying to $K^0_s p$ or $K^0_s \bar p$ is carried out in deep inelastic ep scattering with the H1 detector at HERA. Such a resonance could be a strange pentaquark \thplns, evidence for which has been reported by several experiments. The $K^0_s p$ and $K^0_s \bar p$ invariant mass distributions presented here do not show any significant peak in the mass range from threshold up to 1.7 GeV. Mass dependent upper limits on $\sigma(ep \to e \thplf X)\times BR(\thplf \to K^0 p)$ are obtained at the 95% confidence level., Comment: 13 pages, 4 figures
Published: 2006
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26. Diffractive Deep-Inelastic Scattering with a Leading Proton at HERA

Author: Aktas, A., Andreev, V., Anthonis, T., Aplin, S., Asmone, A., Astvatsatourov, A., Babaev, A., Backovic, S., Bahr, J., Baghdasaryan, A., Baranov, P., Barrelet, E., Bartel, W., Baudrand, S., Baumgartner, S., Becker, J., Beckingham, M., Behnke, O., Behrendt, O., Belousov, A., Berger, Ch., Berger, N., Bizot, J.C., Boenig, M.-O., Boudry, V., Bracinik, J., Brandt, G., Brisson, V., Brown, D.P., Bruncko, D., Busser, F.W., Bunyatyan, A., Buschhorn, G., Bystritskaya, L., Campbell, A.J., Caron, S., Cassol-Brunner, F., Cerny, K., Cerny, V., Chekelian, V., Contreras, J.G., Coughlan, J.A., Cox, B.E., Cozzika, G., Cvach, J., Dainton, J.B., Dau, W.D., Daum, K., De Boer, Y., Delcourt, B., De Roeck, A., Desch, K., De Wolf, E.A., Diaconu, C., Dodonov, V., Dubak, A., Eckerlin, G., Efremenko, V., Egli, S., Eichler, R., Eisele, F., Ellerbrock, M., Erdmann, W., Essenov, S., Falkewicz, A., Faulkner, P.J.W., Favart, L., Fedotov, A., Felst, R., Ferencei, J., Finke, L., Fleischer, M., Fleischmann, P., Fleming, Y.H., Flucke, G., Fomenko, A., Foresti, I., Franke, G., Frisson, T., Gabathuler, E., Garutti, E., Gayler, J., Gerlich, C., Ghazaryan, S., Ginzburgskaya, S., Glazov, A., Glushkov, I., Goerlich, L., Goettlich, M., Gogitidze, N., Gorbounov, S., Goyon, C., Grab, C., Greenshaw, T., Gregori, M., Grell, B.R., Grindhammer, G., Gwilliam, C., Haidt, D., Hajduk, L., Hansson, M., Heinzelmann, G., Henderson, R.C.W., Henschel, H., Henshaw, O., Herrera, G., Hildebrandt, M., Hiller, K.H., Hoffmann, D., Horisberger, R., Hovhannisyan, A., Hreus, T., Hussain, S., Ibbotson, M., Ismail, M., Jacquet, M., Janauschek, L., Janssen, X., Jemanov, V., Jonsson, L., Johnson, D.P., Jung, A.W., Jung, H., Kapichine, M., Katzy, J., Keller, N., Kenyon, I.R., Kiesling, C., Klein, M., Kleinwort, C., Klimkovich, T., Kluge, T., Knies, G., Knutsson, A., Korbel, V., Kostka, P., Krastev, K., Kretzschmar, J., Kropivnitskaya, A., Kruger, K., Kuckens, J., Landon, M.P.J., Lange, W., Lastovicka, T., Lastovicka-Medin, G., Laycock, P., Lebedev, A., Leibenguth, G., Lendermann, V., Levonian, S., Lindfeld, L., Lipka, K., Liptaj, A., List, B., Lobodzinska, E., Loktionova, N., Lopez-Fernandez, R., Lubimov, V., Lucaci-Timoce, A.-I., Lueders, H., Luke, D., Lux, T., Lytkin, L., Makankine, A., Malden, N., Malinovski, E., Mangano, S., Marage, P., Marshall, R., Martisikova, M., Martyn, H.-U., Maxfield, S.J., Meer, D., Mehta, A., Meier, K., Meyer, A.B., Meyer, H., Meyer, J., Mikocki, S., Milcewicz-Mika, I., Milstead, D., Mladenov, D., Mohamed, A., Moreau, F., Morozov, A., Morris, J.V., Mozer, M.U., Muller, K., Murin, P., Nankov, K., Naroska, B., Naumann, T., Newman, P.R., Niebuhr, C., Nikiforov, A., Nikitin, D., Nowak, G., Nozicka, M., Oganezov, R., Olivier, B., Olsson, J.E., Osman, S., Ozerov, D., Palichik, V., Panagoulias, I., Papadopoulou, T., Pascaud, C., Patel, G.D., Peez, M., Perez, Emile, Perez-Astudillo, D., Perieanu, A., Petrukhin, A., Pitzl, D., Placakyte, R., Portheault, B., Povh, B., Prideaux, P., Raicevic, N., Reimer, P., Rimmer, A., Risler, C., Rizvi, E., Robmann, P., Roland, B., Roosen, R., Rostovtsev, A., Rurikova, Z., Rusakov, S., Salvaire, F., Sankey, D.P.C., Sauvan, E., Schätzel, S., Schilling, F.-P., Schmidt, S., Schmitt, S., Schmitz, C., Schoeffel, L., Schoning, A., Schultz-Coulon, H.-C., Sedlak, K., Sefkow, F., Shaw-West, R.N., Sheviakov, I., Shtarkov, L.N., Sloan, T., Smirnov, P., Soloviev, Y., South, D., Spaskov, V., Specka, A., Stella, B., Stiewe, J., Strauch, I., Straumann, U., Tchoulakov, V., Thompson, G., Thompson, P.D., Tomasz, F., Traynor, D., Truol, P., Tsakov, I., Tsipolitis, G., Tsurin, I., Turnau, J., Tzamariudaki, E., Urban, Martin, Usik, A., Utkin, D., Valkar, S., Valkarova, A., Vallee, C., Van Mechelen, P., Vargas Trevino, A., Vazdik, Y., Veelken, C., Vest, A., Vinokurova, S., Volchinski, V., Vujicic, B., Wacker, K., Wagner, J., Weber, G., Weber, R., Wegener, D., Werner, C., Werner, N., Wessels, M., Wessling, B., Wigmore, C., Wissing, C., Wolf, R., Wunsch, E., Xella, S., Yan, W., Yeganov, V., Zacek, J., Zalesak, J., Zhang, Zhiqing, Zhelezov, A., Zhokin, A., Zhu, Y.C., Zimmermann, J., Zimmermann, T., Zohrabyan, H., Zomer, F., Trinh, T.N., Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), H1, Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), and H1 Collaboration
Subjects: Physics, Photon, Physics and Astronomy (miscellaneous), 010308 nuclear & particles physics, Hadron, FOS: Physical sciences, HERA, Deep inelastic scattering, 01 natural sciences, 7. Clean energy, Vertex (geometry), High Energy Physics - Experiment, Nuclear physics, Pomeron, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Rapidity, ddc:530, 010306 general physics, Engineering (miscellaneous), Scaling
Abstract: The cross section for the diffractive deep-inelastic scattering process $ep \to e X p$ is measured, with the leading final state proton detected in the H1 Forward Proton Spectrometer. The data analysed cover the range \xpom, 32 pages, 9 figures, 8 tables
Published: 2006

27. Photoproduction of Dijets with High Transverse Momenta at HERA

Author: Aktas, A., Andreev, V., Anthonis, T., Aplin, S., Asmone, A., Astvatsatourov, A., Babaev, A., Backovic, S., Bahr, J., Baghdasaryan, A., Baranov, P., Barrelet, E., Bartel, W., Baudrand, S., Baumgartner, S., Becker, J., Beckingham, M., Behnke, O., Behrendt, O., Belousov, A., Berger, Ch., Berger, N., Bizot, J.C., Boenig, M.-O., Boudry, V., Bracinik, J., Brandt, G., Brisson, V., Brown, D.P., Bruncko, D., Busser, F.W., Bunyatyan, A., Buschhorn, G., Bystritskaya, L., Campbell, A.J., Caron, S., Cassol-Brunner, F., Cerny, K., Cerny, V., Chekelian, V., Contreras, J.G., Coughlan, J.A., Cox, B.E., Cozzika, G., Cvach, J., Dainton, J.B., Dau, W.D., Daum, K., de Boer, Y., Delcourt, B., de Roeck, A., Desch, K., de Wolf, E.A., Diaconu, C., Dodonov, V., Dubak, A., Eckerlin, G., Efremenko, V., Egli, S., Eichler, R., Eisele, F., Ellerbrock, M., Erdmann, W., Essenov, S., Falkewicz, A., Faulkner, P.J.W., Favart, L., Fedotov, A., Felst, R., Ferencei, J., Finke, L., Fleischer, M., Fleischmann, P., Fleming, Y.H., Flucke, G., Fomenko, A., Foresti, I., Franke, G., Frisson, T., Gabathuler, E., Garutti, E., Gayler, J., Gerlich, C., Ghazaryan, S., Ginzburgskaya, S., Glazov, A., Glushkov, I., Goerlich, L., Goettlich, M., Gogitidze, N., Gorbounov, S., Goyon, C., Grab, C., Greenshaw, T., Gregori, M., Grell, B.R., Grindhammer, G., Gwilliam, C., Haidt, D., Hajduk, L., Hansson, M., Heinzelmann, G., Henderson, R.C.W., Henschel, H., Henshaw, O., Herrera, G., Hildebrandt, M., Hiller, K.H., Hoffmann, D., Horisberger, R., Hovhannisyan, A., Hreus, T., Hussain, S., Ibbotson, M., Ismail, M., Jacquet, M., Janauschek, L., Janssen, X., Jemanov, V., Jonsson, L., Johnson, D.P., Jung, A.W., Jung, H., Kapichine, M., Katzy, J., Keller, N., Kenyon, I.R., Kiesling, C., Klein, M., Kleinwort, C., Klimkovich, T., Kluge, T., Knies, G., Knutsson, A., Korbel, V., Kostka, P., Krastev, K., Kretzschmar, J., Kropivnitskaya, A., Kruger, K., Kuckens, J., Landon, M.P.J., Lange, W., Lastovicka, T., Lastovicka-Medin, G., Laycock, P., Lebedev, A., Leibenguth, G., Lendermann, V., Levonian, S., Lindfeld, L., Lipka, K., Liptaj, A., List, B., Lobodzinska, E., Loktionova, N., Lopez-Fernandez, R., Lubimov, V., Lucaci-Timoce, A.-I., Lueders, H., Luke, D., Lux, T., Lytkin, L., Makankine, A., Malden, N., Malinovski, E., Mangano, S., Marage, P., Marshall, R., Martisikova, M., Martyn, H.-U., Maxfield, S.J., Meer, D., Mehta, A., Meier, K., Meyer, A.B., Meyer, H., Meyer, J., Mikocki, S., Milcewicz-Mika, I., Milstead, D., Mladenov, D., Mohamed, A., Moreau, F., Morozov, A., Morris, J.V., Mozer, M.U., Muller, K., Murin, P., Nankov, K., Naroska, B., Naumann, T., Newman, P.R., Niebuhr, C., Nikiforov, A., Nikitin, D., Nowak, G., Nozicka, M., Oganezov, R., Olivier, B., Olsson, J.E., Osman, S., Ozerov, D., Palichik, V., Panagoulias, I., Papadopoulou, T., Pascaud, C., Patel, G.D., Peez, M., Perez, Emile, Perez-Astudillo, D., Perieanu, A., Petrukhin, A., Pitzl, D., Placakyte, R., Portheault, B., Povh, B., Prideaux, P., Raicevic, N., Reimer, P., Rimmer, A., Risler, C., Rizvi, E., Robmann, P., Roland, B., Roosen, R., Rostovtsev, A., Rurikova, Z., Rusakov, S., Salvaire, F., Sankey, D.P.C., Sauvan, E., Schätzel, S., Schilling, F.-P., Schmidt, S., Schmitt, S., Schmitz, C., Schoeffel, L., Schoning, A., Schultz-Coulon, H.-C., Sedlak, K., Sefkow, F., Shaw-West, R.N., Sheviakov, I., Shtarkov, L.N., Sloan, T., Smirnov, P., Soloviev, Y., South, D., Spaskov, V., Specka, A., Stella, B., Stiewe, J., Strauch, I., Straumann, U., Tchoulakov, V., Thompson, G., Thompson, P.D., Tomasz, F., Traynor, D., Truol, P., Tsakov, I., Tsipolitis, G., Tsurin, I., Turnau, J., Tzamariudaki, E., Urban, Martin, Usik, A., Utkin, D., Valkar, S., Valkarova, A., Vallee, C., van Mechelen, P., Vargas Trevino, A., Vazdik, Y., Veelken, C., Vest, A., Vinokurova, S., Volchinski, V., Vujicic, B., Wacker, K., Wagner, J., Weber, G., Weber, R., Wegener, D., Werner, C., Werner, N., Wessels, M., Wessling, B., Wigmore, C., Wissing, C., Wolf, R., Wunsch, E., Xella, S., Yan, W., Yeganov, V., Zacek, J., Zalesak, J., Zhang, Z., Zhelezov, A., Zhokin, A., Zhu, Y.C., Zimmermann, J., Zimmermann, T., Zohrabyan, H., Zomer, F., Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), H1, Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), and Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)
Subjects: Nuclear and High Energy Physics, Particle physics, Photon, FOS: Physical sciences, Parton, Jet (particle physics), 01 natural sciences, 7. Clean energy, High Energy Physics - Experiment, law.invention, Nuclear physics, Momentum, High Energy Physics - Experiment (hep-ex), law, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], ddc:530, 010306 general physics, Collider, Nuclear Experiment, Quantum chromodynamics, Physics, Luminosity (scattering theory), 010308 nuclear & particles physics, High Energy Physics::Phenomenology, HERA, High Energy Physics::Experiment
Abstract: Differential dijet cross sections are measured in photoproduction in the region of photon virtualities Q^2 < 1 GeV^2 with the H1 detector at the HERA ep collider using an integrated luminosity of 66.6 pb^{-1}. Jets are defined with the inclusive k_T algorithm and a minimum transverse momentum of the leading jet of 25 GeV is required. Dijet cross sections are measured in direct and resolved photon enhanced regions separately. Longitudinal proton momentum fractions up to 0.7 are reached. The data compare well with predictions from Monte Carlo event generators based on leading order QCD and parton showers and with next-to-leading order QCD calculations corrected for hadronisation effects., 18 pages, 5 figures, 5 tables
Published: 2006
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28. Search for Doubly-Charged Higgs Boson Production at HERA

Author: Aktas, A., Andreev, V., Anthonis, T., Aplin, S., Asmone, A., Astvatsatourov, A., Babaev, A., Backovic, S., Bahr, J., Baghdasaryan, A., Baranov, P., Barrelet, E., Bartel, W., Baudrand, S., Baumgartner, S., Becker, J., Beckingham, M., Behnke, O., Behrendt, O., Belousov, A., Berger, Ch., Berger, N., Bizot, J.C., Boenig, M.-O., Boudry, V., Bracinik, J., Brandt, G., Brisson, V., Brown, D.P., Bruncko, D., Busser, F.W., Bunyatyan, A., Buschhorn, G., Bystritskaya, L., Campbell, A.J., Caron, S., Cassol-Brunner, F., Cerny, K., Cerny, V., Chekelian, V., Contreras, J.G., Coughlan, J.A., Cox, B.E., Cozzika, G., Cvach, J., Dainton, J.B., Dau, W.D., Daum, K., De Boer, Y., Delcourt, B., De Roeck, A., Desch, K., De Wolf, E.A., Diaconu, C., Dodonov, V., Dubak, A., Eckerlin, G., Efremenko, V., Egli, S., Eichler, R., Eisele, F., Ellerbrock, M., Erdmann, W., Essenov, S., Falkewicz, A., Faulkner, P.J.W., Favart, L., Fedotov, A., Felst, R., Ferencei, J., Finke, L., Fleischer, M., Fleischmann, P., Fleming, Y.H., Flucke, G., Fomenko, A., Foresti, I., Franke, G., Frisson, T., Gabathuler, E., Garutti, E., Gayler, J., Gerlich, C., Ghazaryan, S., Ginzburgskaya, S., Glazov, A., Glushkov, I., Goerlich, L., Goettlich, M., Gogitidze, N., Gorbounov, S., Goyon, C., Grab, C., Greenshaw, T., Gregori, M., Grell, B.R., Grindhammer, G., Gwilliam, C., Haidt, D., Hajduk, L., Hansson, M., Heinzelmann, G., Henderson, R.C.W., Henschel, H., Henshaw, O., Herrera, G., Hildebrandt, M., Hiller, K.H., Hoffmann, D., Horisberger, R., Hovhannisyan, A., Hreus, T., Hussain, S., Ibbotson, M., Ismail, M., Jacquet, M., Janauschek, L., Janssen, X., Jemanov, V., Jonsson, L., Johnson, D.P., Jung, A.W., Jung, H., Kapichine, M., Katzy, J., Keller, N., Kenyon, I.R., Kiesling, C., Klein, M., Kleinwort, C., Klimkovich, T., Kluge, T., Knies, G., Knutsson, A., Korbel, V., Kostka, P., Krastev, K., Kretzschmar, J., Kropivnitskaya, A., Kruger, K., Kuckens, J., Landon, M.P.J., Lange, W., Lastovicka, T., Lastovicka-Medin, G., Laycock, P., Lebedev, A., Leibenguth, G., Lendermann, V., Levonian, S., Lindfeld, L., Lipka, K., Liptaj, A., List, B., Lobodzinska, E., Loktionova, N., Lopez-Fernandez, R., Lubimov, V., Lucaci-Timoce, A.-I., Lueders, H., Luke, D., Lux, T., Lytkin, L., Makankine, A., Malden, N., Malinovski, E., Mangano, S., Marage, P., Marshall, R., Martisikova, M., Martyn, H.-U., Maxfield, S.J., Meer, D., Mehta, A., Meier, K., Meyer, A.B., Meyer, H., Meyer, J., Mikocki, S., Milcewicz-Mika, I., Milstead, D., Mladenov, D., Mohamed, A., Moreau, F., Morozov, A., Morris, J.V., Mozer, M.U., Muller, K., Murin, P., Nankov, K., Naroska, B., Naumann, T., Newman, P.R., Niebuhr, C., Nikiforov, A., Nikitin, D., Nowak, G., Nozicka, M., Oganezov, R., Olivier, B., Olsson, J.E., Osman, S., Ozerov, D., Palichik, V., Panagoulias, I., Papadopoulou, T., Pascaud, C., Patel, G.D., Peez, M., Perez, Emile, Perez-Astudillo, D., Perieanu, A., Petrukhin, A., Pitzl, D., Placakyte, R., Portheault, B., Povh, B., Prideaux, P., Raicevic, N., Reimer, P., Rimmer, A., Risler, C., Rizvi, E., Robmann, P., Roland, B., Roosen, R., Rostovtsev, A., Rurikova, Z., Rusakov, S., Salvaire, F., Sankey, D.P.C., Sauvan, E., Schätzel, S., Schilling, F.-P., Schmidt, S., Schmitt, S., Schmitz, C., Schoeffel, L., Schoning, A., Schultz-Coulon, H.-C., Sedlak, K., Sefkow, F., Shaw-West, R.N., Sheviakov, I., Shtarkov, L.N., Sloan, T., Smirnov, P., Soloviev, Y., South, D., Spaskov, V., Specka, A., Stella, B., Stiewe, J., Strauch, I., Straumann, U., Tchoulakov, V., Thompson, G., Thompson, P.D., Tomasz, F., Traynor, D., Truol, P., Tsakov, I., Tsipolitis, G., Tsurin, I., Turnau, J., Tzamariudaki, E., Urban, Martin, Usik, A., Utkin, D., Valkar, S., Valkarova, A., Vallee, C., Van Mechelen, P., Vargas Trevino, A., Vazdik, Y., Veelken, C., Vest, A., Vinokurova, S., Volchinski, V., Vujicic, B., Wacker, K., Wagner, J., Weber, G., Weber, R., Wegener, D., Werner, C., Werner, N., Wessels, M., Wessling, B., Wigmore, C., Wissing, C., Wolf, R., Wunsch, E., Xella, S., Yan, W., Yeganov, V., Zacek, J., Zalesak, J., Zhang, Zhiqing, Zhelezov, A., Zhokin, A., Zhu, Y.C., Zimmermann, J., Zimmermann, T., Zohrabyan, H., Zomer, F., Sirois, Y., Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), H1, Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Muon, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Yukawa potential, FOS: Physical sciences, Charge (physics), HERA, Electron, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, Higgs boson, Physique des particules élémentaires, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], ddc:530, High Energy Physics::Experiment, 010306 general physics, Boson, Lepton
Abstract: A search for the single production of doubly-charged Higgs bosons H ± ± in ep collisions is presented. The signal is searched for via the Higgs decays into a high mass pair of same charge leptons, one of them being an electron. The analysis uses up to 118 pb -1 of ep data collected by the H1 experiment at HERA. No evidence for doubly-charged Higgs production is observed and mass dependent upper limits are derived on the Yukawa couplings h e l of the Higgs boson to an electron-lepton pair. Assuming that the doubly-charged Higgs only decays into an electron and a muon via a coupling of electromagnetic strength h e μ = sqrt(4 π α em) ≃ 0.3, a lower limit of 141 GeV on the H ± ± mass is obtained at the 95% confidence level. For a doubly-charged Higgs decaying only into an electron and a tau and a coupling h e τ ≃ 0.3, masses below 112 GeV are ruled out. © 2006 Elsevier B.V. All rights reserved., 0, DESY-06-038 / hep-ex/0604027, H1 Collaboration., info:eu-repo/semantics/published
Published: 2006
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29. Measurement of Prompt Photon Cross Sections in Photoproduction at HERA

Author: Aktas, A., Andreev, V., Anthonis, T., Asmone, A., Babaev, A., Backovic, S., Bahr, J., Baranov, P., Barrelet, E., Bartel, W., Baumgartner, S., Becker, J., Beckingham, M., Behnke, O., Behrendt, O., Belousov, A., Berger, Ch., Berger, N., Berndt, T., Bizot, J.C., Bohme, J., Boenig, M.-O., Boudry, V., Bracinik, J., Brisson, V., Broker, H.-B., Brown, D.P., Bruncko, D., Busser, F.W., Bunyatyan, A., Buschhorn, G., Bystritskaya, L., Campbell, A.J., Caron, S., Cassol-Brunner, F., Cerny, K., Chekelian, V., Collard, C., Contreras, J.G., Coppens, Y.R., Coughlan, J.A., Cox, B.E., Cozzika, G., Cvach, J., Dainton, J.B., Dau, W.D., Daum, K., Delcourt, B., Demirchyan, R., Roeck, A. De, Desch, K., Wolf, E.A. De, Diaconu, C., Dingfelder, J., Dodonov, V., Dubak, A., Duprel, C., Eckerlin, G., Efremenko, V., Egli, S., Eichler, R., Eisele, F., Ellerbrock, M., Elsen, E., Erdmann, M., Erdmann, W., Faulkner, P.J.W., Favart, L., Fedotov, A., Felst, R., Ferencei, J., Fleischer, M., Fleischmann, P., Fleming, Y.H., Flucke, G., Flugge, G., Fomenko, A., Foresti, I., Formanek, J., Franke, G., Frising, G., Gabathuler, E., Gabathuler, K., Garutti, E., Garvey, J., Gayler, J., Gerhards, R., Gerlich, C., Ghazaryan, S., Goerlich, L., Gogitidze, N., Gorbounov, S., Grab, C., Grassler, H., Greenshaw, T., Gregori, M., Grindhammer, G., Gwilliam, C., Haidt, D., Hajduk, L., Haller, J., Hansson, M., Heinzelmann, G., Henderson, R.C.W., Henschel, H., Henshaw, O., Heremans, R., Herrera, G., Herynek, I., Heuer, R.-D., Hildebrandt, M., Hiller, K.H., Hoting, P., Hoffmann, D., Horisberger, R., Hovhannisyan, A., Ibbotson, M., Ismail, M., Jacquet, M., Janauschek, L., Janssen, X., Jemanov, V., Jonsson, L., Johnson, D.P., Jung, H., Kant, D., Kapichine, M., Karlsson, M., Katzy, J., Keller, N., Kennedy, J., Kenyon, I.R., Kiesling, C., Klein, M., Kleinwort, C., Klimkovich, T., Kluge, T., Knies, G., Knutsson, A., Koblitz, B., Korbel, V., Kostka, P., Koutouev, R., Kropivnitskaya, A., Kroseberg, J., Kuckens, J., Kuhr, T., Landon, M.P.J., Lange, W., Lastovicka, T., Laycock, P., Lebedev, A., Leiner, B., Lemrani, R., Lendermann, V., Levonian, S., Lindfeld, L., Lipka, K., List, B., Lobodzinska, E., Loktionova, N., Lopez-Fernandez, R., Lubimov, V., Lueders, H., Luke, D., Lux, T., Lytkin, L., Makankine, A., Malden, N., Malinovski, E., Mangano, S., Marage, P., Marks, J., Marshall, R., Martisikova, M., Martyn, H.-U., Maxfield, S.J., Meer, D., Mehta, A., Meier, K., Meyer, A.B., Meyer, H., Meyer, J., Michine, S., Mikocki, S., Milcewicz-Mika, I., Milstead, D., Mohamed, A., Moreau, F., Morozov, A., Morozov, I., Morris, J.V., Mozer, M.U., Muller, K., Murn, P., Nagovizin, V., Naroska, B., Naumann, J., Naumann, Th., Newman, P.R., Niebuhr, C., Nikiforov, A., Nikitin, D., Nowak, G., Nozicka, M., Oganezov, R., Olivier, B., Olsson, J.E., Ossoskov, G., Ozerov, D., Pascaud, C., Patel, G.D., Peez, M., Perez, Emile, Perieanu, A., Petrukhin, A., Pitzl, D., Placakyte, R., Poschl, R., Portheault, B., Povh, B., Raicevic, N., Ratiani, Z., Reimer, P., Reisert, B., Rimmer, A., Risler, C., Rizvi, E., Robmann, P., Roland, B., Roosen, R., Rostovtsev, A., Rurikova, Z., Rusakov, S., Rybicki, K., Sankey, D.P.C., Sauvan, E., Schatzel, S., Scheins, J., Schilling, F.-P., Schleper, P., Schmidt, S., Schmitt, S., Schneider, M., Schoeffel, L., Schoning, A., Schroder, V., Schultz-Coulon, H.-C., Schwanenberger, C., Sedlak, K., Sefkow, F., Sheviakov, I., Shtarkov, L.N., Sirois, Y., Sloan, T., Smirnov, P., Soloviev, Y., South, D., Spaskov, V., Specka, A., Spitzer, H., Stamen, R., Stella, B., Stiewe, J., Strauch, I., Straumann, U., Tchoulakov, V., Thompson, G., Thompson, P.D., Tomasz, F., Traynor, D., Truol, P., Tsipolitis, G., Tsurin, I., Turnau, J., Tzamariudaki, E., Uraev, A., Urban, Martin, Usik, A., Utkin, D., Valkar, S., Valkarova, A., Vallee, C., Mechelen, P. Van, Remortel, N. Van, Trevino, A. Vargas, Vazdik, Y., Veelken, C., Vest, A., Vinokurova, S., Volchinski, V., Wacker, K., Wagner, J., Weber, G., Weber, R., Wegener, D., Werner, C., Werner, N., Wessels, M., Wessling, B., Winter, G.-G., Wissing, Ch., Woehrling, E.-E., Wolf, R., Wunsch, E., Xella, S., Yan, W., Yeganov, V., Zacek, J., Zalesak, J., Zhang, Zhiqing, Zhokin, A., Zohrabyan, H., Zomer, F., Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), and H1
Subjects: Physics, Particle physics, Photon, Physics and Astronomy (miscellaneous), Proton, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Perturbative QCD, HERA, Jet (particle physics), 01 natural sciences, High Energy Physics - Experiment, Momentum, Nuclear physics, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, Center of mass, 010306 general physics, Nuclear Experiment, Engineering (miscellaneous), Event (particle physics)
Abstract: Results are presented on the photoproduction of isolated prompt photons, inclusively and associated with jets, in the gamma p center of mass energy range 142 < W < 266 GeV. The cross sections are measured for the transverse momentum range of the photons 5 < E_T^gamma < 10 GeV and for associated jets with E_T^jet > 4.5 GeV. They are measured differentially as a function of E_T^gamma, E_T^jet, the pseudorapidities eta^gamma and eta^jet and estimators of the momentum fractions x_gamma and x_p of the incident photon and proton carried by the constituents participating in the hard process. In order to further investigate the underlying dynamics, the angular correlation between the prompt photon and the jet in the transverse plane is studied. Predictions by perturbative QCD calculations in next to leading order are about 30% below the inclusive prompt photon data after corrections for hadronisation and multiple interactions, but are in reasonable agreement with the results for prompt photons associated with jets. Comparisons with the predictions of the event generators PYTHIA and HERWIG are also presented., 21 pages, 6 figures, 3 tables
Published: 2005

30. Search for bosonic stop decays in R-parity violating supersymmetry in $e^+p$ collisions at HERA

Author: Aktas, A., Andreev, V., Anthonis, T., Asmone, A., Babaev, A., Backovic, S., Bahr, J., Baranov, P., Barrelet, E., Bartel, W., Baumgartner, S., Becker, J., Beckingham, M., Behnke, O., Behrendt, O., Belousov, A., Berger, Ch., Berger, N., Berndt, T., Bizot, J.C., Bohme, J., Boenig, M.-O., Boudry, V., Bracinik, J., Brisson, V., Broker, H.-B., Brown, D.P., Bruncko, D., Busser, F.W., Bunyatyan, A., Buschhorn, G., Bystritskaya, L., Campbell, A.J., Caron, S., Cassol-Brunner, F., Cerny, K., Chekelian, V., Contreras, J.G., Coppens, Y.R., Coughlan, J.A., Cox, B.E., Cozzika, G., Cvach, J., Dainton, J.B., Dau, W.D., Daum, K., Delcourt, B., Demirchyan, R., de Roeck, A., Desch, K., de Wolf, E.A., Diaconu, C., Dingfelder, J., Dodonov, V., Dubak, A., Duprel, C., Eckerlin, G., Efremenko, V., Egli, S., Eichler, R., Eisele, F., Ellerbrock, M., Elsen, E., Erdmann, M., Erdmann, W., Faulkner, P.J.W., Favart, L., Fedotov, A., Felst, R., Ferencei, J., Fleischer, M., Fleischmann, P., Fleming, Y.H., Flucke, G., Flugge, G., Fomenko, A., Foresti, I., Formanek, J., Franke, G., Frising, G., Gabathuler, E., Gabathuler, K., Garutti, E., Garvey, J., Gayler, J., Gerhards, R., Gerlich, C., Ghazaryan, S., Ginzburgskaya, S., Goerlich, L., Gogitidze, N., Gorbounov, S., Grab, C., Grassler, H., Greenshaw, T., Gregori, M., Grindhammer, G., Gwilliam, C., Haidt, D., Hajduk, L., Haller, J., Hansson, M., Heinzelmann, G., Henderson, R.C.W., Henschel, H., Henshaw, O., Herrera, G., Herynek, I., Heuer, R.-D., Hildebrandt, M., Hiller, K.H., Hoting, P., Hoffmann, D., Horisberger, R., Hovhannisyan, A., Ibbotson, M., Ismail, M., Jacquet, M., Janauschek, L., Janssen, X., Jemanov, V., Jonsson, L., Johnson, D.P., Jung, H., Kant, D., Kapichine, M., Karlsson, M., Katzy, J., Keller, N., Kennedy, J., Kenyon, I.R., Kiesling, C., Klein, M., Kleinwort, C., Klimkovich, T., Kluge, T., Knies, G., Knutsson, A., Koblitz, B., Korbel, V., Kostka, P., Koutouev, R., Kropivnitskaya, A., Kroseberg, J., Kruger, K., Kuckens, J., Kuhr, T., Landon, M.P.J., Lange, W., Lastovicka, T., Laycock, P., Lebedev, A., Leiner, B., Lemrani, R., Lendermann, V., Levonian, S., Lindfeld, L., Lipka, K., List, B., Lobodzinska, E., Loktionova, N., Lopez-Fernandez, R., Lubimov, V., Lueders, H., Luke, D., Lux, T., Lytkin, L., Makankine, A., Malden, N., Malinovski, E., Mangano, S., Marage, P., Marks, J., Marshall, R., Martisikova, M., Martyn, H.-U., Maxfield, S.J., Meer, D., Mehta, A., Meier, K., Meyer, A.B., Meyer, H., Meyer, J., Mikocki, S., Milcewicz-Mika, I., Milstead, D., Mohamed, A., Moreau, F., Morozov, A., Morozov, I., Morris, J.V., Mozer, M.U., Muller, K., Murn, P., Nagovizin, V., Nankov, K., Naroska, B., Naumann, J., Naumann, Th., Newman, P.R., Niebuhr, C., Nikiforov, A., Nikitin, D., Nowak, G., Nozicka, M., Oganezov, R., Olivier, B., Olsson, J.E., Ossoskov, G., Ozerov, D., Paramonov, A., Pascaud, C., Patel, G.D., Peez, M., Perez, Emile, Perieanu, A., Petrukhin, A., Pitzl, D., Placakyte, R., Poschl, R., Portheault, B., Povh, B., Raicevic, N., Reimer, P., Reisert, B., Rimmer, A., Risler, C., Rizvi, E., Robmann, P., Roland, B., Roosen, R., Rostovtsev, A., Rurikova, Z., Rusakov, S., Rybicki, K., Sankey, D.P.C., Sauvan, E., Schatzel, S., Scheins, J., Schilling, F.-P., Schleper, P., Schmidt, S., Schmitt, S., Schneider, M., Schoeffel, L., Schoning, A., Schroder, V., Schultz-Coulon, H.-C., Schwanenberger, C., Sedlak, K., Sefkow, F., Sheviakov, I., Shtarkov, L.N., Sirois, Y., Sloan, T., Smirnov, P., Soloviev, Y., South, D., Spaskov, V., Specka, A., Spitzer, H., Stamen, R., Stella, B., Stiewe, J., Strauch, I., Straumann, U., Tchoulakov, V., Thompson, G., Thompson, P.D., Tomasz, F., Traynor, D., Truol, P., Tsipolitis, G., Tsurin, I., Turnau, J., Tzamariudaki, E., Uraev, A., Urban, Martin, Usik, A., Utkin, D., Valkar, S., Valkarova, A., Vallee, C., van Mechelen, P., van Remortel, N., Vargas Trevino, A., Vazdik, Y., Veelken, C., Vest, A., Vinokurova, S., Volchinski, V., Wacker, K., Wagner, J., Weber, G., Weber, R., Wegener, D., Werner, C., Werner, N., Wessels, M., Wessling, B., Winter, G.-G., Wissing, Ch., Woehrling, E.-E., Wolf, R., Wunsch, E., Xella, S., Yan, W., Yeganov, V., Zacek, J., Zalesak, J., Zhang, Zhiqing, Zhelezov, A., Zhokin, A., Zohrabyan, H., Zomer, F., Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), H1, Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS)
Subjects: High Energy Physics - Experiment (hep-ex), High Energy Physics::Phenomenology, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], FOS: Physical sciences, High Energy Physics::Experiment, High Energy Physics - Experiment
Abstract: A search for scalar top quarks in R-parity violating supersymmetry is performed in e^+ p collisions at HERA using the H1 detector. The data, taken at sqrt{s}=319 GeV and 301 GeV, correspond to an integrated luminosity of 106 pb^-1. The resonant production of scalar top quarks \tilde{t} in positron quark fusion via an R-parity violating Yukawa coupling lambda' is considered with the subsequent bosonic stop decay \tilde{t} -> \tilde{b} W. The R-parity violating decay of the sbottom quark tilde{b} -> d \bar{nu_e} and leptonic and hadronic W decays are considered. No evidence for stop production is found in the search for bosonic stop decays nor in a search for the direct R-parity violating decay \tilde{t} -> eq. Mass dependent limits on lambda' are obtained in the framework of the Minimal Supersymmetric Standard Model. Stop quarks with masses up to 275 GeV can be excluded at the 95% confidence level for a Yukawa coupling of electromagnetic strength., 20 pages, 5 figures and 2 tables
Published: 2004

31. Search for Single Top Quark Production in ep Collisions at HERA

Author: Aktas, A., Andreev, V., Anthonis, T., Asmone, A., Babaev, A., Backovic, S., Bahr, J., Baranov, P., Barrelet, E., Bartel, W., Baumgartner, S., Becker, J., Beckingham, M., Behnke, O., Behrendt, O., Belousov, A., Berger, C., Berndt, T., Bizot, J.C., Bohme, J., Boenig, M.O., Boudry, V., Bracinik, J., Braunschweig, W., Brisson, V., Broker, H.B., Brown, D.P., Bruncko, D., Busser, F.W., Bunyatyan, A., Buschhorn, G., Bystritskaya, L., Campbell, A.J., Caron, S., Cassol-Brunner, F., Chekelian, V., Clarke, D., Collard, C., Contreras, J.G., Coppens, Y.R., Coughlan, J.A., Cousinou, M.C., Cox, B.E., Cozzika, G., Cvach, J., Dainton, J.B., Dau, W.D., Daum, K., Delcourt, B., Delerue, N., Demirchyan, R., de Roeck, A., de Wolf, E.A., Diaconu, C., Dingfelder, J., Dodonov, V., Dowell, J.D., Dubak, A., Duprel, C., Eckerlin, G., Efremenko, V., Egli, S., Eichler, R., Eisele, F., Ellerbrock, M., Elsen, E., Erdmann, M., Erdmann, W., Faulkner, P.J.W., Favart, L., Fedotov, A., Felst, R., Ferencei, J., Fleischer, M., Fleischmann, P., Fleming, Y.H., Flucke, G., Flugge, G., Fomenko, A., Foresti, I., Formanek, J., Franke, G., Frising, G., Gabathuler, E., Gabathuler, K., Garvey, J., Gassner, J., Gayler, Joerg., Gerhards, R., Gerlich, C., Ghazaryan, S., Goerlich, L., Gogitidze, N., Gorbounov, S., Grab, C., Grabski, V., Grassler, H., Greenshaw, T., Gregori, M., Grindhammer, G., Haidt, D., Hajduk, L., Haller, J., Heinzelmann, G., Henderson, R.C.W., Henschel, H., Henshaw, O., Heremans, R., Herrera, G., Herynek, I., Hildebrandt, M., Hiller, K.H., Hladky, J., Hoting, P., Hoffmann, D., Horisberger, R., Hovhannisyan, A., Ibbotson, M., Jacquet, M., Janauschek, L., Janssen, X., Jemanov, V., Jonsson, L., Johnson, C., Johnson, D.P., Jung, H., Kant, D., Kapichine, M., Karlsson, M., Katzy, J., Keil, F., Keller, N., Kennedy, J., Kenyon, I.R., Kiesling, C., Klein, M., Kleinwort, C., Kluge, T., Knies, G., Koblitz, B., Kolya, S.D., Korbel, V., Kostka, P., Koutouev, R., Kropivnitskaya, A., Kroseberg, J., Kueckens, J., Kuhr, T., Landon, M.P.J., Lange, W., Lastovicka, T., Laycock, P., Lebedev, A., Leissner, B., Lemrani, R., Lendermann, V., Levonian, S., List, B., Lobodzinska, E., Loktionova, N., Lopez-Fernandez, R., Lubimov, V., Lueders, H., Luders, S., Luke, D., Lytkin, L., Makankine, A., Malden, N., Malinovski, E., Mangano, S., Marage, P., Marks, J., Marshall, R., Martyn, H.U., Martyniak, J., Maxfield, S.J., Meer, D., Mehta, A., Meier, K., Meyer, A.B., Meyer, H., Meyer, J., Michine, S., Mikocki, S., Milstead, D., Moreau, F., Morozov, A., Morozov, I., Morris, J.V., Muller, K., Murin, P., Nagovizin, V., Naroska, B., Naumann, J., Naumann, T., Newman, P.R., Niebergall, F., Niebuhr, C., Nikitin, D., Nowak, G., Nozicka, M., Olivier, B., Olsson, J.E., Ossoskov, G., Ozerov, D., Pascaud, C., Patel, G.D., Peez, M., Perez, Emile, Petrukhin, A., Pitzl, D., Poschl, R., Povh, B., Raicevic, N., Rauschenberger, J., Reimer, P., Reisert, B., Risler, C., Rizvi, E., Robmann, P., Roosen, R., Rostovtsev, A., Rusakov, S., Rybicki, K., Sankey, D.P.C., Sauvan, E., Schatzel, S., Scheins, J., Schilling, F.P., Schleper, P., Schmidt, S., Schmitt, S., Schneider, M., Schoeffel, L., Schoning, A., Schroder, V., Schultz-Coulon, H.C., Schwanenberger, C., Sedlak, K., Sefkow, F., Sheviakov, I., Shtarkov, L.N., Sirois, Y., Sloan, T., Smirnov, P., Soloviev, Y., South, D., Spaskov, V., Specka, A., Spitzer, H., Stamen, R., Stella, B., Stiewe, J., Strauch, I., Straumann, U., Thompson, G., Thompson, P.D., Tomasz, F., Traynor, D., Truol, P., Tsipolitis, G., Tsurin, I., Turnau, J., Turney, J.E., Tzamariudaki, E., Uraev, A., Urban, Martin, Usik, A., Valkar, S., Valkarova, A., Vallee, C., van Mechelen, P., Vargas Trevino, A., Vassiliev, S., Vazdik, Y., Veelken, C., Vest, A., Vichnevski, A., Vinokurova, S., Volchinski, V., Wacker, K., Wagner, J., Waugh, B., Weber, G., Weber, R., Wegener, D., Werner, C., Werner, N., Wessels, M., Wessling, B., Winde, M., Winter, G.G., Wissing, C., Woehrling, E.E., Wunsch, E., Zacek, J., Zalesak, J., Zhang, Zhiqing, Zhokin, A., Zomer, F., Zur Nedden, M., Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), H1, Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), and H1 Collaboration
Subjects: Quark, Physics, Particle physics, Top quark, Physics and Astronomy (miscellaneous), High Energy Physics::Phenomenology, FOS: Physical sciences, Top quark condensate, HERA, Omega baryon, Bottom quark, Standard Model, Sigma baryon, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, Engineering (miscellaneous)
Abstract: A search for single top quark production is performed in e±p collisions at HERA. The search exploits data corresponding to an integrated luminosity of 118.3 pb-1. A model for the anomalous production of top quarks in a flavour changing neutral current process involving a tuγ coupling is investigated. Decays of top quarks into a b quark and a W boson are considered in the leptonic and the hadronic decay channels of the W. Both a cut-based analysis and a multivariate likelihood analysis are performed to discriminate anomalous top quark production from Standard Model background processes. In the leptonic channel, 5 events are found while 1.31 ± 0.22 events are expected from the Standard Model background. In the hadronic channel, no excess above the expectation for Standard Model processes is found. These observations lead to a cross section σ(ep→etX)=0.29+0.15−0.14 pb at s√=319 GeV. Alternatively, assuming that the observed events are due to a statistical fluctuation, upper limits of 0.55 pb on the anomalous top production cross section and of 0.27 on the tuγ coupling κtuγ are established at the 95% confidence level., The European Physical Journal C, 33 (1), ISSN:1434-6044, ISSN:1434-6052
Published: 2004

32. Measurement of the proton structure function $F_2$ at low $Q^2$ in QED Compton scattering at HERA

Author: Aktas, A., Andreev, V., Anthonis, T., Asmone, A., Babaev, A., Backovic, S., Bahr, J., Baranov, P., Barrelet, E., Bartel, W., Baumgartner, S., Becker, J., Beckingham, M., Behnke, O., Behrendt, O., Belousov, A., Berger, Ch., Berger, N., Berndt, T., Bizot, J.C., Bohme, J., Boenig, M.-O., Boudry, V., Bracinik, J., Brisson, V., Broker, H.-B., Brown, D.P., Bruncko, D., Busser, F.W., Bunyatyan, A., Buschhorn, G., Bystritskaya, L., Campbell, A.J., Caron, S., Cassol-Brunner, F., Cerny, K., Chekelian, V., Collard, C., Contreras, J.G., Coppens, Y.R., Coughlan, J.A., Cox, B.E., Cozzika, G., Cvach, J., Dainton, J.B., Dau, W.D., Daum, K., Delcourt, B., Demirchyan, R., Roeck, A. De, Desch, K., Wolf, E.A. De, Diaconu, C., Dingfelder, J., Dodonov, V., Dubak, A., Duprel, C., Eckerlin, G., Efremenko, V., Egli, S., Eichler, R., Eisele, F., Ellerbrock, M., Elsen, E., Erdmann, M., Erdmann, W., Faulkner, P.J.W., Favart, L., Fedotov, A., Felst, R., Ferencei, J., Fleischer, M., Fleischmann, P., Fleming, Y.H., Flucke, G., Flugge, G., Fomenko, A., Foresti, I., Formanek, J., Franke, G., Frising, G., Gabathuler, E., Gabathuler, K., Garutti, E., Garvey, J., Gayler, J., Gerhards, R., Gerlich, C., Ghazaryan, S., Goerlich, L., Gogitidze, N., Gorbounov, S., Grab, C., Grassler, H., Greenshaw, T., Gregori, M., Grindhammer, G., Gwilliam, C., Haidt, D., Hajduk, L., Haller, J., Hansson, M., Heinzelmann, G., Henderson, R.C.W., Henschel, H., Henshaw, O., Heremans, R., Herrera, G., Herynek, I., Heuer, R.-D., Hildebrandt, M., Hiller, K.H., Hoting, P., Hoffmann, D., Horisberger, R., Hovhannisyan, A., Ibbotson, M., Ismail, M., Jacquet, M., Janauschek, L., Janssen, X., Jemanov, V., Jonsson, L., Johnson, D.P., Jung, H., Kant, D., Kapichine, M., Karlsson, M., Katzy, J., Keller, N., Kennedy, J., Kenyon, I.R., Kiesling, C., Klein, M., Kleinwort, C., Klimkovich, T., Kluge, T., Knies, G., Knutsson, A., Koblitz, B., Korbel, V., Kostka, P., Koutouev, R., Kropivnitskaya, A., Kroseberg, J., Kuckens, J., Kuhr, T., Landon, M.P.J., Lange, W., Lastovicka, T., Laycock, P., Lebedev, A., Leiner, B., Lemrani, R., Lendermann, V., Levonian, S., Lindfeld, L., Lipka, K., List, B., Lobodzinska, E., Loktionova, N., Lopez-Fernandez, R., Lubimov, V., Lueders, H., Luke, D., Lux, T., Lytkin, L., Makankine, A., Malden, N., Malinovski, E., Mangano, S., Marage, P., Marks, J., Marshall, R., Martisikova, M., Martyn, H.-U., Maxfield, S.J., Meer, D., Mehta, A., Meier, K., Meyer, A.B., Meyer, H., Meyer, J., Michine, S., Mikocki, S., Milcewicz-Mika, I., Milstead, D., Mohamed, A., Moreau, F., Morozov, A., Morozov, I., Morris, J.V., Mozer, M.U., Muller, K., Murn, P., Nagovizin, V., Naroska, B., Naumann, J., Naumann, Th., Newman, P.R., Niebuhr, C., Nikiforov, A., Nikitin, D., Nowak, G., Nozicka, M., Oganezov, R., Olivier, B., Olsson, J.E., Ossoskov, G., Ozerov, D., Pascaud, C., Patel, G.D., Peez, M., Perez, Emile, Perieanu, A., Petrukhin, A., Pitzl, D., Placakyte, R., Poschl, R., Portheault, B., Povh, B., Raicevic, N., Ratiani, Z., Reimer, P., Reisert, B., Rimmer, A., Risler, C., Rizvi, E., Robmann, P., Roland, B., Roosen, R., Rostovtsev, A., Rurikova, Z., Rusakov, S., Rybicki, K., Sankey, D.P.C., Sauvan, E., Schatzel, S., Scheins, J., Schilling, F.-P., Schleper, P., Schmidt, S., Schmitt, S., Schneider, M., Schoeffel, L., Schoning, A., Schroder, V., Schultz-Coulon, H.-C., Schwanenberger, C., Sedlak, K., Sefkow, F., Sheviakov, I., Shtarkov, L.N., Sirois, Y., Sloan, T., Smirnov, P., Soloviev, Y., South, D., Spaskov, V., Specka, A., Spitzer, H., Stamen, R., Stella, B., Stiewe, J., Strauch, I., Straumann, U., Tchoulakov, V., Thompson, G., Thompson, P.D., Tomasz, F., Traynor, D., Truol, P., Tsipolitis, G., Tsurin, I., Turnau, J., Tzamariudaki, E., Uraev, A., Urban, Martin, Usik, A., Utkin, D., Valkar, S., Valkarova, A., Vallee, C., Mechelen, P. Van, Remortel, N. Van, Trevino, A. Vargas, Vazdik, Y., Veelken, C., Vest, A., Vinokurova, S., Volchinski, V., Wacker, K., Wagner, J., Weber, G., Weber, R., Wegener, D., Werner, C., Werner, N., Wessels, M., Wessling, B., Winter, G.-G., Wissing, Ch., Woehrling, E.-E., Wolf, R., Wunsch, E., Xella, S., Yan, W., Yeganov, V., Zacek, J., Zalesak, J., Zhang, Zhiqing, Zhokin, A., Zohrabyan, H., Zomer, F., Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), H1, Starita, Sabine, Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), and Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)
Subjects: High Energy Physics - Experiment (hep-ex), [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Phenomenology, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], FOS: Physical sciences, High Energy Physics::Experiment, High Energy Physics - Experiment
Abstract: The proton structure function F_2(x,Q^2) is measured in inelastic QED Compton scattering using data collected with the H1 detector at HERA. QED Compton events are used to access the kinematic range of very low virtualities of the exchanged photon, Q^2, down to 0.5 GeV^2, and Bjorken x up to \sim 0.06, a region which has not been covered previously by inclusive measurements at HERA. The results are in agreement with the measurements from fixed target lepton-nucleon scattering experiments., Comment: 19 pages, 4 figures and 2 tables
Published: 2004

33. Forward pi^0 Production and Associated Transverse Energy Flow in Deep-Inelastic Scattering at HERA

Author: Aktas, A., Andreev, V., Anthonis, T., Asmone, A., Babaev, A., Backovic, S., Bahr, J., Baranov, P., Barrelet, E., Bartel, W., Baumgartner, S., Becker, J., Beckingham, M., Behnke, O., Behrendt, O., Belousov, A., Berger, Ch., Berger, N., Berndt, T., Bizot, J.C., Bohme, J., Boenig, M.-O., Boudry, V., Bracinik, J., Brisson, V., Broker, H.-B., Brown, D.P., Bruncko, D., Busser, F.W., Bunyatyan, A., Buschhorn, G., Bystritskaya, L., Campbell, A.J., Caron, S., Cassol-Brunner, F., Cerny, K., Chekelian, V., Collard, C., Contreras, J.G., Coppens, Y.R., Coughlan, J.A., Cox, B.E., Cozzika, G., Cvach, J., Dainton, J.B., Dau, W.D., Daum, K., Delcourt, B., Demirchyan, R., Roeck, A. De, Desch, K., Wolf, E.A. De, Diaconu, C., Dingfelder, J., Dodonov, V., Dubak, A., Duprel, C., Eckerlin, G., Efremenko, V., Egli, S., Eichler, R., Eisele, F., Ellerbrock, M., Elsen, E., Erdmann, M., Erdmann, W., Faulkner, P.J.W., Favart, L., Fedotov, A., Felst, R., Ferencei, J., Fleischer, M., Fleischmann, P., Fleming, Y.H., Flucke, G., Flugge, G., Fomenko, A., Foresti, I., Formanek, J., Franke, G., Frising, G., Gabathuler, E., Gabathuler, K., Garutti, E., Garvey, J., Gayler, J., Gerhards, R., Gerlich, C., Ghazaryan, S., Goerlich, L., Gogitidze, N., Gorbounov, S., Grab, C., Grassler, H., Greenshaw, T., Gregori, M., Grindhammer, G., Gwilliam, C., Haidt, D., Hajduk, L., Haller, J., Hansson, M., Heinzelmann, G., Henderson, R.C.W., Henschel, H., Henshaw, O., Heremans, R., Herrera, G., Herynek, I., Heuer, R.-D., Hildebrandt, M., Hiller, K.H., Hoting, P., Hoffmann, D., Horisberger, R., Hovhannisyan, A., Ibbotson, M., Ismail, M., Jacquet, M., Janauschek, L., Janssen, X., Jemanov, V., Jonsson, L., Johnson, D.P., Jung, H., Kant, D., Kapichine, M., Karlsson, M., Katzy, J., Keller, N., Kennedy, J., Kenyon, I.R., Kiesling, C., Klein, M., Kleinwort, C., Klimkovich, T., Kluge, T., Knies, G., Knutsson, A., Koblitz, B., Korbel, V., Kostka, P., Koutouev, R., Kropivnitskaya, A., Kroseberg, J., Kuckens, J., Kuhr, T., Landon, M.P.J., Lange, W., Lastovicka, T., Laycock, P., Lebedev, A., Leiner, B., Lemrani, R., Lendermann, V., Levonian, S., Lindfeld, L., Lipka, K., List, B., Lobodzinska, E., Loktionova, N., Lopez-Fernandez, R., Lubimov, V., Lueders, H., Luke, D., Lux, T., Lytkin, L., Makankine, A., Malden, N., Malinovski, E., Mangano, S., Marage, P., Marks, J., Marshall, R., Martisikova, M., Martyn, H.-U., Maxfield, S.J., Meer, D., Mehta, A., Meier, K., Meyer, A.B., Meyer, H., Meyer, J., Michine, S., Mikocki, S., Milcewicz-Mika, I., Milstead, D., Mohamed, A., Moreau, F., Morozov, A., Morozov, I., Morris, J.V., Mozer, M.U., Muller, K., Murn, P., Nagovizin, V., Naroska, B., Naumann, J., Naumann, Th., Newman, P.R., Niebuhr, C., Nikiforov, A., Nikitin, D., Nowak, G., Nozicka, M., Oganezov, R., Olivier, B., Olsson, J.E., Ossoskov, G., Ozerov, D., Pascaud, C., Patel, G.D., Peez, M., Perez, Emile, Perieanu, A., Petrukhin, A., Pitzl, D., Placakyte, R., Poschl, R., Portheault, B., Povh, B., Raicevic, N., Ratiani, Z., Reimer, P., Reisert, B., Rimmer, A., Risler, C., Rizvi, E., Robmann, P., Roland, B., Roosen, R., Rostovtsev, A., Rurikova, Z., Rusakov, S., Rybicki, K., Sankey, D.P.C., Sauvan, E., Schatzel, S., Scheins, J., Schilling, F.-P., Schleper, P., Schmidt, S., Schmitt, S., Schneider, M., Schoeffel, L., Schoning, A., Schroder, V., Schultz-Coulon, H.-C., Schwanenberger, C., Sedlak, K., Sefkow, F., Sheviakov, I., Shtarkov, L.N., Sirois, Y., Sloan, T., Smirnov, P., Soloviev, Y., South, D., Spaskov, V., Specka, A., Spitzer, H., Stamen, R., Stella, B., Stiewe, J., Strauch, I., Straumann, U., Tchoulakov, V., Thompson, G., Thompson, P.D., Tomasz, F., Traynor, D., Truol, P., Tsipolitis, G., Tsurin, I., Turnau, J., Tzamariudaki, E., Uraev, A., Urban, Martin, Usik, A., Utkin, D., Valkar, S., Valkarova, A., Vallee, C., Mechelen, P. Van, Remortel, N. Van, Trevino, A. Vargas, Vazdik, Y., Veelken, C., Vest, A., Vinokurova, S., Volchinski, V., Wacker, K., Wagner, J., Weber, G., Weber, R., Wegener, D., Werner, C., Werner, N., Wessels, M., Wessling, B., Winter, G.-G., Wissing, Ch., Woehrling, E.-E., Wolf, R., Wunsch, E., Xella, S., Yan, W., Yeganov, V., Zacek, J., Zalesak, J., Zhang, Zhiqing, Zhokin, A., Zohrabyan, H., Zomer, F., Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), and H1
Subjects: High Energy Physics - Experiment (hep-ex), High Energy Physics::Phenomenology, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], FOS: Physical sciences, High Energy Physics::Experiment, Nuclear Experiment, High Energy Physics - Experiment
Abstract: Deep-inelastic positron-proton interactions at low values of Bjorken-x down to x \approx 4.10^-5 which give rise to high transverse momentum pi^0 mesons are studied with the H1 experiment at HERA. The inclusive cross section for pi^0 mesons produced at small angles with respect to the proton remnant (the forward region) is presented as a function of the transverse momentum and energy of the pi^0 and of the four-momentum transfer Q^2 and Bjorken-x. Measurements are also presented of the transverse energy flow in events containing a forward pi^0 meson. Hadronic final state calculations based on QCD models implementing different parton evolution schemes are confronted with the data., Comment: 27 pages, 8 figures and 3 tables
Published: 2004
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34. Search for Squark Production in R-Parity Violating Supersymmetry at HERA

Author: Aktas, A., Andreev, V., Anthonis, T., Asmone, A., Babaev, A., Backovic, S., Bahr, J., Baranov, P., Barrelet, E., Bartel, W., Baumgartner, S., Becker, J., Beckingham, M., Behnke, O., Behrendt, O., Belousov, A., Berger, Ch., Berger, N., Berndt, T., Bizot, J.C., Bohme, J., Boenig, M.-O., Boudry, V., Bracinik, J., Brisson, V., Broker, H.-B., Brown, D.P., Bruncko, D., Busser, F.W., Bunyatyan, A., Buschhorn, G., Bystritskaya, L., Campbell, A.J., Caron, S., Cassol-Brunner, F., Cerny, K., Chekelian, V., Collard, C., Contreras, J.G., Coppens, Y.R., Coughlan, J.A., Cox, B.E., Cozzika, G., Cvach, J., Dainton, J.B., Dau, W.D., Daum, K., Delcourt, B., Demirchyan, R., Roeck, A. De, Desch, K., Wolf, E.A. De, Diaconu, C., Dingfelder, J., Dodonov, V., Dubak, A., Duprel, C., Eckerlin, G., Efremenko, V., Egli, S., Eichler, R., Eisele, F., Ellerbrock, M., Elsen, E., Erdmann, M., Erdmann, W., Faulkner, P.J.W., Favart, L., Fedotov, A., Felst, R., Ferencei, J., Fleischer, M., Fleischmann, P., Fleming, Y.H., Flucke, G., Flugge, G., Fomenko, A., Foresti, I., Formanek, J., Franke, G., Frising, G., Gabathuler, E., Gabathuler, K., Garutti, E., Garvey, J., Gayler, J., Gerhards, R., Gerlich, C., Ghazaryan, S., Goerlich, L., Gogitidze, N., Gorbounov, S., Grab, C., Grassler, H., Greenshaw, T., Gregori, M., Grindhammer, G., Gwilliam, C., Haidt, D., Hajduk, L., Haller, J., Hansson, M., Heinzelmann, G., Henderson, R.C.W., Henschel, H., Henshaw, O., Heremans, R., Herrera, G., Herynek, I., Heuer, R.-D., Hildebrandt, M., Hiller, K.H., Hoting, P., Hoffmann, D., Horisberger, R., Hovhannisyan, A., Ibbotson, M., Ismail, M., Jacquet, M., Janauschek, L., Janssen, X., Jemanov, V., Jonsson, L., Johnson, D.P., Jung, H., Kant, D., Kapichine, M., Karlsson, M., Katzy, J., Keller, N., Kennedy, J., Kenyon, I.R., Kiesling, C., Klein, M., Kleinwort, C., Klimkovich, T., Kluge, T., Knies, G., Knutsson, A., Koblitz, B., Korbel, V., Kostka, P., Koutouev, R., Kropivnitskaya, A., Kroseberg, J., Kuckens, J., Kuhr, T., Landon, M.P.J., Lange, W., Lastovicka, T., Laycock, P., Lebedev, A., Leiner, B., Lemrani, R., Lendermann, V., Levonian, S., Lindfeld, L., Lipka, K., List, B., Lobodzinska, E., Loktionova, N., Lopez-Fernandez, R., Lubimov, V., Lueders, H., Luke, D., Lux, T., Lytkin, L., Makankine, A., Malden, N., Malinovski, E., Mangano, S., Marage, P., Marks, J., Marshall, R., Martisikova, M., Martyn, H.-U., Maxfield, S.J., Meer, D., Mehta, A., Meier, K., Meyer, A.B., Meyer, H., Meyer, J., Michine, S., Mikocki, S., Milcewicz-Mika, I., Milstead, D., Mohamed, A., Moreau, F., Morozov, A., Morozov, I., Morris, J.V., Mozer, M.U., Muller, K., Murn, P., Nagovizin, V., Naroska, B., Naumann, J., Naumann, Th., Newman, P.R., Niebuhr, C., Nikiforov, A., Nikitin, D., Nowak, G., Nozicka, M., Oganezov, R., Olivier, B., Olsson, J.E., Ossoskov, G., Ozerov, D., Pascaud, C., Patel, G.D., Peez, M., Perez, Emile, Perieanu, A., Petrukhin, A., Pitzl, D., Placakyte, R., Poschl, R., Portheault, B., Povh, B., Raicevic, N., Ratiani, Z., Reimer, P., Reisert, B., Rimmer, A., Risler, C., Rizvi, E., Robmann, P., Roland, B., Roosen, R., Rostovtsev, A., Rurikova, Z., Rusakov, S., Rybicki, K., Sankey, D.P.C., Sauvan, E., Schatzel, S., Scheins, J., Schilling, F.-P., Schleper, P., Schmidt, S., Schmitt, S., Schneider, M., Schoeffel, L., Schoning, A., Schroder, V., Schultz-Coulon, H.-C., Schwanenberger, C., Sedlak, K., Sefkow, F., Sheviakov, I., Shtarkov, L.N., Sirois, Y., Sloan, T., Smirnov, P., Soloviev, Y., South, D., Spaskov, V., Specka, A., Spitzer, H., Stamen, R., Stella, B., Stiewe, J., Strauch, I., Straumann, U., Tchoulakov, V., Thompson, G., Thompson, P.D., Tomasz, F., Traynor, D., Truol, P., Tsipolitis, G., Tsurin, I., Turnau, J., Tzamariudaki, E., Uraev, A., Urban, Martin, Usik, A., Utkin, D., Valkar, S., Valkarova, A., Vallee, C., Mechelen, P. Van, Remortel, N. Van, Trevino, A. Vargas, Vazdik, Y., Veelken, C., Vest, A., Vinokurova, S., Volchinski, V., Wacker, K., Wagner, J., Weber, G., Weber, R., Wegener, D., Werner, C., Werner, N., Wessels, M., Wessling, B., Winter, G.-G., Wissing, Ch., Woehrling, E.-E., Wolf, R., Wunsch, E., Xella, S., Yan, W., Yeganov, V., Zacek, J., Zalesak, J., Zhang, Zhiqing, Zhokin, A., Zohrabyan, H., Zomer, F., Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), H1, and H1 Collaboration
Subjects: High Energy Physics - Experiment (hep-ex), Physics and Astronomy (miscellaneous), 010308 nuclear & particles physics, 0103 physical sciences, High Energy Physics::Phenomenology, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], FOS: Physical sciences, High Energy Physics::Experiment, 010306 general physics, 01 natural sciences, 7. Clean energy, Engineering (miscellaneous), High Energy Physics - Experiment
Abstract: A search for squarks in R-parity violating supersymmetry is performed in e+/- p collisions at HERA using the H1 detector. The data were taken at a centre-of-mass energy of 319 GeV and correspond to an integrated luminosity of 64.3 pb-1 for e+p collisions and 13.5 pb-1 for e-p collisions. The resonant production of squarks via a Yukawa coupling lambda' is considered, taking into account direct and indirect R-parity violating decay modes. No evidence for squark production is found in the multi-lepton and multi-jet final state topologies investigated. Mass dependent limits on lambda' are obtained in the framework of the Minimal Supersymmetric Standard Model. In addition, the results are interpreted in terms of constraints on the parameters of the minimal Supergravity model. At the 95% confidence level squarks of all flavours with masses up to 275 GeV are excluded in a large part of the parameter space for a Yukawa coupling of electromagnetic strength. For a coupling strength 100 times smaller, masses up to 220 GeV can be ruled out., 28 pages, 12 figures and 3 tables
Published: 2004

35. Measurement and QCD analysis of neutral and charged current cross sections at HERA

Author: Adloff, C, Andreev, V, Andrieu, B, Anthonis, T, Astvatsatourov, A, Babaev, A, Bahr, J, Baranov, P, Barrelet, E, Bartel, W, Baumgartner, S, Becker, J, Beckingham, M, Beglarian, A, Behnke, O, Belousov, A, Berger, C, Berndt, T, Bizot, JC, Bohme, J, Boudry, V, Braunschweig, W, Brisson, V, Broker, HB, Brown, DP, Bruncko, D, Busser, FW, Bunyatyan, A, Burrage, A, Buschhorn, G, Bystritskaya, L, Campbell, AJ, Cao, J, Caron, S, Cassol-Brunner, F, Chekelian, V, Clarke, D, Collard, C, Contreras, JG, Coppens, YR, Coughlan, JA, Cousinou, MC, Cox, BE, Cozzika, G, Cvach, J, Dainton, JB, Dau, WD, Daum, K, Davidsson, M, Delcourt, B, Delerue, N, Demirchyan, R, De Roeck, A, De Wolf, EA, Diaconu, C, Dingfelder, J, Dixon, P, Dodonov, V, Dowell, JD, Dubak, A, Duprel, C, Eckerlin, G, Eckstein, D, Efremenko, V, Egli, S, Eichler, R, Eisele, F, Eisenhandler, E, Ellerbrock, M, Elsen, E, Erdmann, M, Erdmann, W, Faulkner, PJW, Favart, L, Fedotov, A, Felst, R, Ferencei, J, Ferron, S, Fleischer, M, Fleischmann, P, Fleming, YH, Flucke, G, Flugge, G, Fomenko, A, Foresti, I, Formanek, J, Franke, G, Frising, G, Gabathuler, E, Gabathuler, K, Garvey, J, Gassner, J, Gayler, J, Gerhards, R, Gerlich, C, Ghazaryan, S, Goerlich, L, Gogitidze, N, Grab, C, Grabski, V, Grassler, H, Greenshaw, T, Grindhammer, G, Haidt, D, Hajduk, L, Haller, J, Heinemann, B, Heinzelmann, G, Henderson, RCW, Hengstmann, S, Henschel, H, Henshaw, O, Heremans, R, Herrera, G, Herynek, I, Hildebrandt, M, Hilgers, M, Hiller, KH, Hladky, J, Hoting, P, Hoffmann, D, Horisberger, R, Hovhannisyan, A, Ibbotson, M, Issever, C, Jacquet, M, Jaffre, M, Janauschek, L, Janssen, X, Jemanov, V, Jonsson, L, Johnson, C, Johnson, DP, Jones, MAS, Jung, H, Kant, D, Kapichine, M, Karlsson, M, Karschnick, O, Katzy, J, Keil, F, Keller, N, Kennedy, J, Kenyon, IR, Kiesling, C, Kjellberg, P, Klein, M, Kleinwort, C, Kluge, T, Knies, G, Koblitz, B, Kolya, SD, Korbel, V, Kostka, P, Koutouev, R, Koutov, A, Kroseberg, J, Kruger, K, Kuhr, T, Lamb, D, Landon, MPJ, Lange, W, Lastovicka, T, Laycock, P, Lebailly, E, Lebedev, A, Leissner, B, Lemrani, R, Lendermann, V, Levonian, S, List, B, Lobodzinska, E, Lobodzinski, B, Loginov, A, Loktionova, N, Lubimov, V, Luders, S, Luke, D, Lytkin, L, Malden, N, Malinovski, E, Mangano, S, Marage, P, Marks, J, Marshall, R, Martyn, HU, Martyniak, J, Maxfield, SJ, Meer, D, Mehta, A, Meier, K, Meyer, AB, Meyer, H, Meyer, J, Michine, S, Mikocki, S, Milstead, D, Mohrdieck, S, Mondragon, MN, Moreau, F, Morozov, A, Morris, JV, Muller, K, Murin, P, Nagovizin, V, Naroska, B, Naumann, J, Naumann, T, Newman, PR, Niebergall, F, Niebuhr, C, Nix, O, Nowak, G, Nozicka, M, Olivier, B, Olsson, JE, Ozerov, D, Panassik, V, Pascaud, C, Patel, GD, Peez, M, Perez, E, Petrukhin, A, Phillips, JP, Pitzl, D, Portheault, B, Poschl, R, Potachnikova, I, Povh, B, Rauschenberger, J, Reimer, P, Reisert, B, Risler, C, Rizvi, E, Robmann, P, Roosen, R, Rostovtsev, A, Rusakov, S, Rybicki, K, Sankey, DPC, Sauvan, E, Schatzel, S, Scheins, J, Schilling, FP, Schleper, P, Schmidt, D, Schmidt, S, Schmitt, S, Schneider, M, Schoeffel, L, Schoning, A, Schorner-Sadenius, T, Schroder, V, Schultz-Coulon, HC, Schwanenberger, C, Sedlak, K, Sefkow, F, Sheviakov, I, Shtarkov, LN, Sirois, Y, Sloan, T, Smirnov, P, Soloviev, Y, South, D, Spaskov, V, Specka, A, Spitzer, H, Stamen, R, Stella, B, Stiewe, J, Strauch, I, Straumann, U, Tchetchelnitski, S, Thompson, G, Thompson, PD, Tomasz, F, Traynor, D, Truol, P, Tsipolitis, G, Tsurin, I, Turnau, J, Turney, JE, Tzamariudaki, E, Uraev, A, Urban, M, Usik, A, Valkar, S, Valkarova, A, Vallee, C, Van Mechelen, P, Trevino, AV, Vassiliev, S, Vazdik, Y, Veelken, C, Vest, A, Vichnevski, A, Wacker, K, Wagner, J, Wallny, R, Waugh, B, Weber, G, Weber, R, Wegener, D, Werner, C, Werner, N, Wessels, M, Wiesand, S, Winde, M, Winter, GG, Wissing, C, Wobisch, M, Woehrling, EE, Wunsch, E, Wyatt, AC, Zacek, J, Zalesak, J, Zhang, Z, Zhokin, A, Zomer, F, zur Nedden, M, Collaboration, H, H1 Collaboration, Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), H1, Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), and Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Quantum chromodynamics, Physics, Particle physics, Luminosity (scattering theory), Physics and Astronomy (miscellaneous), Proton, Neutral current, 010308 nuclear & particles physics, FOS: Physical sciences, Parton, HERA, 01 natural sciences, 7. Clean energy, High Energy Physics - Experiment, 3. Good health, Standard Model, Nuclear physics, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], 010306 general physics, Engineering (miscellaneous), Charged current
Abstract: The inclusive e^+ p single and double differential cross sections for neutral and charged current processes are measured with the H1 detector at HERA. The data were taken in 1999 and 2000 at a centre-of-mass energy of \sqrt{s} = 319 GeV and correspond to an integrated luminosity of 65.2 pb^-1. The cross sections are measured in the range of four-momentum transfer squared Q^2 between 100 and 30000 GeV^2 and Bjorken x between 0.0013 and 0.65. The neutral current analysis for the new e^+ p data and the earlier e^- p data taken in 1998 and 1999 is extended to small energies of the scattered electron and therefore to higher values of inelasticity y, allowing a determination of the longitudinal structure function F_L at high Q^2 (110 - 700 GeV^2). A new measurement of the structure function x F_3 is obtained using the new e^+ p and previously published e^\pm p neutral current cross section data at high Q^2. These data together with H1 low Q^2 precision data are further used to perform new next-to-leading order QCD analyses in the framework of the Standard Model to extract flavour separated parton distributions in the proton., 54 pages, 19 figures and 15 tables
Published: 2003

36. Search for QCD instanton-induced processes in deep-inelastic scattering at HERA

Author: Adloff, C., Andreev, V., Andrieu, B., Anthonis, T., Astvatsatourov, A., Babaev, A., Bahr, J., Baranov, P., Barrelet, E., Bartel, W., Becker, J., Beckingham, M., Beglarian, A., Behnke, O., Beier, C., Belousov, A., Berger, C., Berndt, T., Bizot, J.C., Bohme, J., Boudry, V., Braunschweig, W., Brisson, V., Broker, H.B., Brown, D.P., Bruckner, W., Bruncko, D., Busser, F.W., Bunyatyan, A., Burrage, A., Buschhorn, G., Bystritskaya, L., Campbell, A.J., Carli, T., Caron, S., Cassol-Brunner, F., Clarke, D., Collard, C., Contreras, J.G., Coppens, Y.R., Coughlan, J.A., Cousinou, M.C., Cox, B.E., Cozzika, G., Cvach, J., Dainton, J.B., Dau, W.D., Daum, K., Davidsson, M., Delcourt, B., Delerue, N., Demirchyan, R., De Roeck, A., De Wolf, E.A., Diaconu, C., Dingfelder, J., Dixon, P., Dodonov, V., Dowell, J.D., Droutskoi, A., Dubak, A., Duprel, C., Eckerlin, G., Eckstein, D., Efremenko, V., Egli, S., Eichler, R., Eisele, F., Eisenhandler, E., Ellerbrock, M., Elsen, E., Erdmann, M., Erdmann, W., Faulkner, P.J.W., Favart, L., Fedotov, A., Felst, R., Ferencei, J., Ferron, S., Fleischer, M., Fleischmann, P., Fleming, Y.H., Flugge, G., Fomenko, A., Foresti, I., Formanek, J., Franke, G., Frising, G., Gabathuler, E., Gabathuler, K., Garvey, J., Gassner, J., Gayler, J., Gerhards, R., Gerlich, C., Ghazaryan, S., Goerlich, L., Gogitidze, N., Grab, C., Grabski, V., Grassler, H., Greenshaw, T., Grindhammer, G., Hadig, T., Haidt, D., Hajduk, L., Haller, J., Haynes, W.J., Heinemann, B., Heinzelmann, G., Henderson, R.C.W., Hengstmann, S., Henschel, H., Heremans, R., Herrera, G., Herynek, I., Hildebrandt, M., Hilgers, M., Hiller, K.H., Hladky, J., Hoting, P., Hoffmann, D., Horisberger, R., Hovhannisyan, A., Hurling, S., Ibbotson, M., Jacquet, M., Jaffre, M., Janauschek, L., Janssen, X., Jemanov, V., Jonsson, L., Johnson, C., Johnson, D.P., Jones, M.A.S., Jung, H., Kant, D., Kapichine, M., Karlsson, M., Karschnick, O., Keil, F., Keller, N., Kennedy, J., Kenyon, I.R., Kermiche, S., Kiesling, C., Kjellberg, P., Klein, M., Kleinwort, C., Kluge, T., Knies, G., Koblitz, B., Kolya, S.D., Korbel, V., Kostka, P., Kotelnikov, S.K., Koutouev, R., Koutov, A., Kroseberg, J., Kruger, K., Kuhr, T., Kurca, T., Lamb, D., Landon, M.P.J., Lange, W., Lastovicka, T., Laycock, P., Lebailly, E., Lebedev, A., Leiner, B., Lemrani, R., Lendermann, V., Levonian, S., Lindstroem, M., List, B., Lobodzinska, E., Lobodzinski, B., Loginov, A., Loktionova, N., Lubimov, V., Luders, S., Luke, D., Lytkin, L., Malden, N., Malinovski, E., Malinovski, I., Mangano, S., Maracek, R., Marage, P., Marks, J., Marshall, R., Martyn, H.U., Martyniak, J., Maxeld, S.J., Meer, D., Mehta, A., Meier, K., Meyer, A.B., Meyer, H., Meyer, J., Meyer, P.O., Mikocki, S., Milstead, D., Mohrdieck, S., Mondragon, M.N., Moreau, F., Morozov, A., Morris, J.V., Muller, K., Murn, P., Nagovizin, V., Naroska, B., Naumann, J., Naumann, T., Nellen, G., Newman, P.R., Niebergall, F., Niebuhr, C., Nix, O., Nowak, G., Olsson, J.E., Ozerov, D., Panassik, V., Pascaud, C., Patel, G.D., Peez, M., Perez, Emile, Petrukhin, A., Phillips, J.P., Pitzl, D., Poschl, R., Potachnikova, I., Povh, B., Radel, G., Rauschenberger, J., Reimer, P., Reisert, B., Reyna, D., Risler, C., Rizvi, E., Robmann, P., Roosen, R., Rostovtsev, A., Rusakov, S., Rybicki, K., Sankey, D.P.C., Schatzel, S., Scheins, J., Schilling, F.P., Schleper, P., Schmidt, D., Schmidt, S., Schmitt, S., Schneider, M., Schoeffel, L., Schoning, A., Schorner, T., Schroder, V., Schultz-Coulon, H.C., Schwanenberger, C., Sedlak, K., Sefkow, F., Shekelyan, V., Sheviakov, I., Shtarkov, L.N., Sirois, Y., Sloan, T., Smirnov, P., Soloviev, Y., South, D., Spaskov, V., Specka, A., Spitzer, H., Stamen, R., Stella, B., Stiewe, J., Strauch, I., Straumann, U., Swart, M., Tchetchelnitski, S., Thompson, G., Thompson, P.D., Tobien, N., Tomasz, F., Traynor, D., Truol, P., Tsipolitis, G., Tsurin, I., Turnau, J., Turney, J.E., Tzamariudaki, E., Udluft, S., Uraev, A., Urban, Martin, Usik, A., Valkar, S., Valkarova, A., Vallee, C., Van Mechelen, P., Vassiliev, S., Vazdik, Y., Vest, A., Vichnevski, A., Wacker, K., Wagner, J., Wallny, R., Waugh, B., Weber, G., Wegener, D., Werner, C., Werner, N., Wessels, M., White, G., Wiesand, S., Wilksen, T., Winde, M., Winter, G.G., Wissing, C., Wobisch, M., Woehrling, E.E., Wunsch, E., Wyatt, A.C., Zacek, J., Zalesak, J., Zhang, Zhiqing, Zhokin, A., Zomer, F., Zur Nedden, M., Damoiseaux, Magali, Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), H1, H1 Collaboration, Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), and Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Physics, Quantum chromodynamics, Particle physics, Instanton, Physics and Astronomy (miscellaneous), [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], 010308 nuclear & particles physics, High Energy Physics::Lattice, QCD vacuum, High Energy Physics::Phenomenology, Extrapolation, FOS: Physical sciences, Observable, HERA, Deep inelastic scattering, 01 natural sciences, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, Perturbation theory (quantum mechanics), 010306 general physics, Engineering (miscellaneous)
Abstract: Signals of QCD instanton-induced processes are searched for in deep-inelastic scattering (DIS) at the electron-proton collider HERA in a kinematic region defined by the Bjorken-scaling variables x > 10^(-3), 0.1 < y < 0.6 and photon virtualities 10, 28 pages, 8 figures and 1 table
Published: 2002

37. Energy Flow and Rapidity Gaps Between Jets in Photoproduction at HERA

Author: Adloff, C, Andreev, V, Andrieu, B, Anthonis, T, Arkadov, V, Astvatsatourov, A, Babaev, A, Bahr, J, Baranov, P, Barrelet, E, Bartel, W, Bate, P, Becker, J, Beglarian, A, Behnke, O, Beier, C, Belousov, A, Benisch, T, Berger, C, Berndt, T, Bizot, JC, Boehme, J, Boudry, V, Braunschweig, W, Brisson, V, Broker, HB, Brown, DP, Bruckner, W, Bruncko, D, Burger, J, Busser, FW, Bunyatyan, A, Burrage, A, Buschhorn, G, Bystritskaya, L, Campbell, AJ, Cao, J, Caron, S, Cassol-Brunner, F, Clarke, D, Collard, C, Contreras, JG, Coppens, YR, Coughlan, JA, Cousinou, MC, Cox, BE, Cozzika, G, Cvach, J, Dainton, JB, Dau, WD, Daum, K, Davidsson, M, Delcourt, B, Delerue, N, Demirchyan, R, De Roeck, A, De Wolf, EA, Diaconu, C, Dingfelder, J, Dixon, P, Dodonov, V, Dowell, JD, Droutskoi, A, Dubak, A, Duprel, C, Eckerlin, G, Eckstein, D, Efremenko, V, Egli, S, Eichler, R, Eisele, F, Eisenhandler, E, Ellerbrock, M, Elsen, E, Erdmann, M, Erdmann, W, Faulkner, PJW, Favart, L, Fedotov, A, Felst, R, Ferencei, J, Ferron, S, Fleischer, M, Fleming, YH, Flugge, G, Fomenko, A, Foresti, I, Formanek, J, Franke, G, Gabathuler, E, Gabathuler, K, Garvey, J, Gassner, J, Gayler, J, Gerhards, R, Gerlich, C, Ghazaryan, S, Goerlich, L, Gogitidze, N, Grab, C, Grassler, H, Greenshaw, T, Grindhammer, G, Hadig, T, Haidt, D, Hajduk, L, Haller, J, Haynes, WJ, Heinemann, B, Heinzelmann, G, Henderson, RCW, Hengstmann, S, Henschel, H, Heremans, R, Herrera, G, Herynek, I, Hildebrandt, M, Hilgers, M, Hiller, KH, Hladky, J, Hoting, P, Hoffmann, D, Horisberger, R, Hurling, S, Ibbotson, M, Issever, C, Jacquet, M, Jaffre, M, Janauschek, L, Janssen, X, Jemanov, V, Jonsson, L, Johnson, C, Johnson, DP, Jones, MAS, Jung, H, Kant, D, Kapichine, M, Jeamanov, V, Karlsson, M, Karschnick, O, Keil, F, Keller, N, Kennedy, J, Kenyon, IR, Kermiche, S, Kiesling, C, Kjellberg, P, Klein, M, Kleinwort, C, Kluge, T, Knies, G, Koblitz, B, Kolya, SD, Korbel, V, Kostka, P, Kotelnikov, SK, Koutouev, R, Koutov, A, Krehbiel, H, Kroseberg, J, Kruger, K, Kupper, A, Kuhr, T, Kurca, T, Lamb, D, Landon, MPJ, Lange, W, Lastovicka, T, Laycock, P, Lebailly, E, Lebedev, A, Leissner, B, Lemrani, R, Lendermann, V, Levonian, S, Lindstroem, M, List, B, Lobodzinska, E, Lobodzinski, B, Loginov, A, Loktionova, N, Lubimov, V, Luders, S, Luke, D, Lytkin, L, Mahlke-Kruger, H, Malden, N, Malinovski, E, Malinovski, I, Maracek, R, Marage, P, Marks, J, Marshall, R, Martyn, HU, Martyniak, J, Maxfield, SJ, Meer, D, Mehta, A, Meier, K, Meyer, AB, Meyer, H, Meyer, J, Meyer, PO, Mikocki, S, Milstead, D, Mkrtchyan, T, Mohr, R, Mohrdieck, S, Mondragon, MN, Moreau, F, Morozov, A, Morris, JV, Muller, K, Murin, P, Nagovizin, V, Naroska, B, Naumann, J, Naumann, T, Nellen, G, Newman, PR, Nicholls, TC, Niebergall, F, Niebuhr, C, Nix, O, Nowak, G, Olsson, JE, Ozerov, D, Panassik, V, Pascaud, C, Patel, GD, Peez, M, Perez, E, Phillips, JP, Pitzl, D, Poschl, R, Potachnikova, I, Povh, B, Radel, G, Rauschenberger, J, Reimer, P, Reisert, B, Reyna, D, Risler, C, Rizvi, E, Robmann, P, Roosen, R, Rostovtsev, A, Rusakov, S, Rybicki, K, Sankey, DPC, Schatzel, S, Scheins, J, Schilling, FP, Schleper, P, Schmidt, D, Schmidt, S, Schmitt, S, Schneider, M, Schoeffel, L, Schoning, A, Schorner, T, Schroder, V, Schultz-Coulon, HC, Schwanenberger, C, Sedlak, K, Sefkow, F, Shekelyan, V, Sheviakov, I, Shtarkov, LN, Sirois, Y, Sloan, T, Smirnov, P, Soloviev, Y, South, D, Spaskov, V, Specka, A, Spitzer, H, Stamen, R, Stella, B, Stiewe, J, Straumann, U, Swart, M, Tasevsky, M, Tchetchelnitski, S, Thompson, G, Thompson, PD, Tobien, N, Traynor, D, Truol, P, Tsipolitis, G, Tsurin, I, Turnau, J, Turney, JE, Tzamariudaki, E, Udluft, S, Urban, M, Usik, A, Valkar, S, Valkarova, A, Vallee, C, Van Mechelen, P, Vassiliev, S, Vazdik, Y, Vichnevski, A, Wacker, K, Wagner, J, Wallny, R, Waugh, B, Weber, G, Weber, M, Wegener, D, Werner, C, Werner, M, Werner, N, Wessels, M, White, G, Wiesand, S, Wilksen, T, Winde, M, Winter, GG, Wissing, C, Wobisch, M, Woehrling, EE, Wunsch, E, Wyatt, AC, Zacek, J, Zalesak, J, Zhang, Z, Zhokin, A, Zomer, F, zur Nedden, M, Collaboration, H, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), H1, Damoiseaux, Magali, Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), and H1 Collaboration
Subjects: Physics, Particle physics, Photon, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], Physics and Astronomy (miscellaneous), Proton, 010308 nuclear & particles physics, FOS: Physical sciences, HERA, 01 natural sciences, High Energy Physics - Experiment, Momentum, High Energy Physics - Experiment (hep-ex), Energy flow, Pseudorapidity, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Rapidity, High Energy Physics::Experiment, 010306 general physics, Nuclear Experiment, Engineering (miscellaneous), Energy (signal processing)
Abstract: Dijet events in photon-proton collisions in which there is a large pseudorapidity separation Delta eta > 2.5 between the two highest E_T jets are studied with the H1 detector at HERA. The inclusive dijet cross sections are measured as functions of the longitudinal momentum fractions of the proton and photon which participate in the production of the jets, x_pjet and x_gjet respectively, Delta eta, the pseudorapidity separation between the two highest E_T jets, and E_T^gap, the total summed transverse energy between the jets. Rapidity gap events are defined as events in which E_T^gap is less than E_T^cut, for E_T^cut varied between 0.5 and 2.0 GeV. The fraction of dijet events with a rapidity gap is measured differentially in Delta eta, x_pjet and x_gjet. An excess of events with rapidity gaps at low values of E_T^cut is observed above the expectation from standard photoproduction processes. This excess can be explained by the exchange of a strongly interacting colour singlet object between the jets., 22 pages, 5 tables, 6 figures
Published: 2002

38. Inelastic leptoproduction of J/Psi mesons at HERA

Author: Adloff, C, Andreev, V, Andrieu, B, Anthonis, T, Astvatsatourov, A, Babaev, A, Bahr, J, Baranov, P, Barrelet, E, Bartel, W, Becker, J, Beckingham, M, Beglarian, A, Behnke, O, Beier, C, Belousov, A, Berger, C, Berndt, T, Bizot, JC, Boehme, J, Boudry, V, Braunschweig, W, Brisson, V, Broker, HB, Brown, DP, Bruckner, W, Bruncko, D, Busser, FW, Bunyatyan, A, Burrage, A, Buschhorn, G, Bystritskaya, L, Campbell, AJ, Caron, S, Cassol-Brunner, F, Clarke, D, Collard, C, Contreras, JG, Coppens, YR, Coughlan, JA, Cousinou, MC, Cox, BE, Cozzika, G, Cvach, J, Dainton, JB, Dau, WD, Daum, K, Davidsson, M, Delcourt, B, Delerue, N, Demirchyan, R, De Roeck, A, De Wolf, EA, Diaconu, C, Dingfelder, J, Dixon, P, Dodonov, V, Dowell, JD, Droutskoi, A, Dubak, A, Duprel, C, Eckerlin, G, Eckstein, D, Efremenko, V, Egli, S, Eichler, R, Eisele, F, Eisenhandler, E, Ellerbrock, M, Elsen, E, Erdmann, M, Erdmann, W, Faulkner, PJW, Favart, L, Fedotov, A, Felst, R, Ferencei, J, Ferron, S, Fleisclier, M, Fleischmann, P, Fleming, YH, Flugge, G, Fomenko, A, Foresti, I, Formanek, J, Franke, G, Frising, G, Gabathuler, E, Gabathuler, K, Garvey, J, Gassner, J, Gayler, J, Gerhards, R, Gerlich, C, Ghazaryan, S, Goerlich, L, Gogitidze, N, Grab, C, Grabski, V, Grassler, H, Greenshaw, T, Grindhammer, G, Hadig, T, Haidt, D, Hajduk, L, Haller, J, Haynes, WJ, Heinemann, B, Heinzelmann, G, Henderson, RCW, Hengstmann, S, Henschel, H, Heremans, R, Herrera, G, Herynek, I, Hildebrandt, M, Hilgers, M, Hiller, KH, Hladky, J, Hoting, P, Hoffmann, D, Horisberger, R, Hovhannisyan, A, Hurling, S, Ibbotson, M, Issever, C, Jacquet, M, Jaffre, M, Janauschek, L, Janssen, X, Jemanov, V, Jonsson, L, Johnson, C, Johnson, DP, Jones, MAS, Jung, H, Kant, D, Kapichine, M, Karlsson, M, Karschnick, O, Keil, F, Keller, N, Kennedy, J, Kenyon, IR, Kermiche, S, Kiesling, C, Kjellberg, P, Klein, M, Kleinwort, I, Kluge, T, Knies, G, Koblitz, B, Kolya, SD, Korbel, V, Kostka, P, Kotelnikov, SK, Koutouev, R, Koutov, A, Kroseberg, J, Kruger, K, Kuhr, T, Kurca, T, Lamb, D, Landon, MPJ, Lange, W, Lastovicka, T, Laycock, P, Lebailly, E, Lebedev, A, Leissner, B, Lemrani, R, Lendermann, V, Levonian, S, Lindstroem, M, List, B, Lobodzinska, E, Lobodzinski, B, Loginov, A, Loktionova, N, Lubimov, V, Luders, S, Luke, D, Lytkin, L, Malden, N, Malinovski, E, Malinovski, I, Mangano, S, Maracek, R, Marage, P, Marks, J, Marshall, R, Martyn, HU, Martyniak, J, Maxfield, SJ, Meer, D, Mehta, A, Meier, K, Meyer, AB, Meyer, H, Meyer, J, Meyer, PO, Mikocki, S, Milstead, D, Mohrdieck, S, Mondragon, MN, Moreau, F, Morozov, A, Morris, JV, Muller, K, Murin, P, Nagovizin, V, Naroska, B, Naumann, J, Naumann, T, Nellen, G, Newman, PR, Niebergall, F, Niebuhr, C, Nix, O, Nowak, G, Olsson, JE, Ozerov, D, Panassik, V, Pascaud, C, Patel, GD, Peez, M, Perez, E, Petrukhin, A, Phillips, JP, Pitzl, D, Poschl, R, Potachnikova, I, Povh, B, Radel, G, Rauschenberger, J, Reimer, P, Reisert, B, Reyna, D, Risler, C, Rizvi, E, Robmann, P, Roosen, R, Rostovtsev, A, Rusakov, S, Rybicki, K, Sankey, DPC, Schatzel, S, Scheins, J, Schilling, FP, Schleper, P, Schmidt, D, Schmidt, S, Schmitt, S, Schneider, M, Schoeffel, L, Schoning, A, Schorner, T, Schroder, V, Schultz-Coulon, HC, Schwanenberger, C, Sedlak, K, Sefkow, F, Shekelyan, V, Shenakov, I, Shtarkov, LN, Sirois, Y, Sloan, T, Smirnov, P, Soloviev, Y, South, D, Spaskov, V, Specka, A, Spitzer, H, Stamen, R, Stella, B, Stiewe, J, Strauch, I, Straumann, U, Swart, M, Tchetchelnitski, S, Thompson, G, Thompson, PD, Tobien, N, Tomasz, F, Traynor, D, Truol, P, Tsipolitis, G, Tsurin, I, Turnau, J, Turney, JE, Tzamariudaki, E, Udluft, S, Uraev, A, Urban, M, Usik, A, Valkar, S, Valkarova, A, Vallee, C, Van Mechelen, P, Vassiliev, S, Vazdik, Y, Vest, A, Vichnevski, A, Wacker, K, Wagner, J, Wallny, R, Waugh, B, Weber, G, Wegener, D, Werner, C, Werner, N, Wessels, M, White, G, Wiesand, S, Wilksen, T, Winde, M, Winter, GG, Wissing, C, Wobisch, M, Woehrling, EE, Wunsch, E, Wyatt, AC, Zacek, J, Zalesak, J, Zhang, Z, Zhokin, A, Zomer, F, zur Nedden, M, Collaboration, H, Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), H1, Damoiseaux, Magali, Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), and H1 Collaboration
Subjects: Particle physics, Physics and Astronomy (miscellaneous), Meson, Proton, Octet, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Lattice, Nuclear Theory, FOS: Physical sciences, Electron, 01 natural sciences, 7. Clean energy, High Energy Physics - Experiment, law.invention, High Energy Physics - Experiment (hep-ex), law, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], 010306 general physics, Collider, Nuclear Experiment, Engineering (miscellaneous), Quantum chromodynamics, Physics, Luminosity (scattering theory), 010308 nuclear & particles physics, High Energy Physics::Phenomenology, HERA, High Energy Physics::Experiment
Abstract: The leptoproduction of J/psi mesons is studied in inelastic reactions for four momentum transfers 2, Comment: 27 pages, 7 figures and 7 tables
Published: 2002

39. Measurement of Dijet Cross Sections in Photoproduction at HERA

Author: Adloff, C, Andreev, V, Andrieu, B, Anthonis, T, Arkadov, V, Astvatsatourov, A, Babaev, A, Bahr, J, Baranov, P, Barrelet, E, Bartel, W, Becker, J, Beglarian, A, Behnke, O, Beier, C, Belousov, A, Berger, C, Berndt, T, Bizot, JC, Bhome, J, Boudry, V, Braunschweig, W, Brisson, V, Broker, HB, Brown, DP, Bruckner, W, Bruncko, D, Burger, J, Busser, FW, Bunyatyan, A, Burrage, A, Buschhorn, G, Bystritskaya, L, Campbell, AJ, Caron, S, Cassol-Brunner, F, Clarke, D, Collard, C, Contreras, JG, Coppens, YR, Coughlan, JA, Cousinou, MC, Cox, BE, Cozzika, G, Cvach, J, Dainton, JB, Dau, WD, Daum, K, Davidsson, M, Delcourt, B, Delerue, N, Demirchyan, R, De Roeck, A, De Wolf, EA, Diaconu, C, Dingfelder, J, Dixon, P, Dodonov, V, Dowell, JD, Droutskoi, A, Dubak, A, Duprel, C, Eckerlin, G, Eckstein, D, Efremenko, V, Egli, S, Eichler, R, Eisele, F, Eisenhandler, E, Ellerbrock, M, Elsen, E, Erdmann, M, Erdmann, W, Faulkner, PJW, Favart, L, Fedotov, A, Felst, R, Ferencei, J, Ferron, S, Fleischer, M, Fleischmann, P, Fleming, YH, Flugge, G, Fomenko, A, Foresti, I, Formanek, J, Franke, G, Frising, G, Gabathuler, E, Gabathuler, K, Garvey, J, Gassner, J, Gayler, J, Gerhards, R, Gerlich, C, Ghazaryan, S, Goerlich, L, Gogitidze, N, Grab, C, Grabski, V, Grassler, H, Greenshaw, T, Grindhammer, G, Hadig, T, Haidt, D, Hajduk, L, Haller, J, Haynes, WJ, Heinemann, B, Heinzelmann, G, Henderson, RC, Hengstmann, S, Henschel, H, Heremans, R, Herrera, G, Herynek, I, Hildebrandt, M, Hilgers, M, Hiller, KH, Hladky, J, Hoting, P, Hoffmann, D, Horisberger, R, Hovannsyan, A, Hurling, S, Ibbotson, M, Issever, C, Jacquet, M, Jaffre, M, Janauschek, L, Janssen, X, Jemanov, V, Jonsson, L, Johnson, C, Johnson, DP, Jones, MAS, Jung, H, Kant, D, Kapichine, M, Karlsson, M, Karschnick, O, Keil, F, Keller, N, Kennedy, J, Kenyon, IR, Kermiche, S, Kiesling, C, Kjellberg, P, Klein, M, Kleinwort, C, Kluge, T, Knies, G, Koblitz, B, Kolya, SD, Korbel, V, Kostka, P, Kotelnikov, SK, Koutouev, R, Koutov, A, Krehbiel, H, Kroseberg, J, Kruger, K, Kuhr, T, Kurca, T, Lamb, D, Landon, MPJ, Lange, W, Lastovicka, T, Laycock, P, Lebailly, E, Lebedev, A, Leissner, B, Lemrani, R, Lendermann, V, Levonian, S, Lindstroem, M, List, B, Lobodzinska, E, Lobodzinski, B, Loginov, A, Loktionova, N, Lubimov, V, Luders, S, Luke, D, Lytkin, L, Mahlke-Kruger, H, Malden, N, Malinovski, E, Malinovski, I, Mangano, S, Maracek, R, Marage, P, Marks, J, Marshall, R, Martyn, HU, Martyniak, J, Maxfield, SJ, Meer, D, Mehta, A, Meier, K, Meyer, AB, Meyer, H, Meyer, J, Meyer, PO, Mikocki, S, Milstead, D, Mkrtchyan, T, Mohrdieck, S, Mondragon, MN, Moreau, F, Morozov, A, Morris, JV, Muller, K, Murin, P, Nagovizin, V, Naroska, B, Naumann, J, Naumann, T, Nellen, G, Newman, PR, Niebergall, F, Niebuhr, C, Nix, O, Nowak, G, Olsson, JE, Ozerov, D, Panassik, V, Pascaud, C, Patel, GD, Peez, M, Perez, E, Petrukhin, A, Phillips, JP, Pitzl, D, Poschl, R, Potachnikova, I, Povh, B, Radel, G, Rauschenberger, J, Reimer, P, Reisert, B, Reyna, D, Risler, C, Rizvi, E, Robmann, P, Roosen, R, Rostovtsev, A, Rusakov, S, Rybicki, K, Sankey, DPC, Schatzel, S, Scheins, J, Schilling, FP, Schleper, P, Schmidt, D, Schmidt, S, Schmitt, S, Schneider, M, Schoeffel, L, Schoning, A, Schorner, T, Schroder, V, Schultz-Coulon, HC, Schwanenberger, C, Sedlak, K, Sefkow, F, Shekelyan, V, Sheviakov, I, Shtarkov, LN, Sirois, Y, Sloan, T, Smirnov, P, Soloviev, Y, South, D, Spaskov, V, Specka, A, Spitzer, H, Stamen, R, Stella, B, Stiewe, J, Straumann, U, Swart, M, Tchetchelnitski, S, Thompson, G, Thompson, PD, Tobien, N, Tomasz, F, Traynor, D, Truol, P, Tsipolitis, G, Tsurin, I, Turnau, J, Turney, JE, Tzamariudaki, E, Udluft, S, Urban, M, Usik, A, Valkar, S, Valkarova, A, Vallee, C, Van Mechelen, P, Vassiliev, S, Vazdik, Y, Vichnevski, A, Wacker, K, Wagner, J, Wallny, R, Waugh, B, Weber, G, Weber, M, Wegener, D, Werner, C, Werner, N, Wessels, M, White, G, Wiesand, S, Wilksen, T, Winde, M, Winter, GG, Wissing, C, Wobisch, N, Woehrling, EE, Wunsch, E, Wyatt, AC, Zacek, J, Zalesak, J, Zhang, Z, Zhokin, A, Zomer, F, zur Nedden, M, Collaboration, H, Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), H1, Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Damoiseaux, Magali, and H1 Collaboration
Subjects: Physics, Particle physics, Photon, Luminosity (scattering theory), Physics and Astronomy (miscellaneous), Proton, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Perturbative QCD, FOS: Physical sciences, Parton, HERA, Jet (particle physics), 7. Clean energy, 01 natural sciences, High Energy Physics - Experiment, Momentum, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, 010306 general physics, Nuclear Experiment, Engineering (miscellaneous)
Abstract: Dijet cross sections as functions of several jet observables are measured in photoproduction using the H1 detector at HERA. The data sample comprises e^+p data with an integrated luminosity of 34.9 pb^(-1). Jets are selected using the inclusive k_T algorithm with a minimum transverse energy of 25 GeV for the leading jet. The phase space covers longitudinal proton momentum fraction x_p and photon longitudinal momentum fraction x_gamma in the ranges 0.05, Comment: 25 pages, 8 figures, 7 tables
Published: 2002

40. A measurement of the $t$ dependence of the helicity structure of diffractive $\rho$ meson electroproduction at HERA

Author: Adloff, C, Andreev, V, Andrieu, B, Anthonis, T, Arkadov, V, Astvatsatourov, A, Babaev, A, Bahr, J, Baranov, P, Barrelet, E, Bartel, W, Becker, J, Beglarian, A, Behnke, O, Beier, C, Belousov, A, Berger, C, Berndt, T, Bizot, JC, Bohme, J, Boudry, V, Braunschweig, W, Brisson, V, Broker, HB, Brown, DP, Bruckner, W, Bruncko, D, Burger, J, Busser, FW, Bunyatyan, A, Burrage, A, Buschhorn, G, Bystritskaya, L, Campbell, AJ, Cao, J, Caron, S, Cassol-Brunner, F, Clarke, D, Clerbaux, B, Collard, C, Contreras, JG, Coppens, YR, Coughlan, JA, Cousinou, MC, Cox, BE, Cozzika, G, Cvach, J, Dainton, JB, Dau, WD, Daum, K, Davidsson, M, Delcourt, B, Delerue, N, Demirchyan, R, De Roeck, A, De Wolf, EA, Diaconu, C, Dingfelder, J, Dixon, P, Dodonov, V, Dowell, JD, Droutskoi, A, Dubak, A, Duprel, C, Eckerlin, G, Eckstein, D, Efremenko, V, Egli, S, Eichler, R, Eisele, F, Eisenhandler, E, Ellerbrock, M, Elsen, E, Erdmann, M, Erdmann, W, Faulkner, PJW, Favart, L, Fedotov, A, Felst, R, Ferencei, J, Ferron, S, Fleischer, M, Fleming, YH, Flugge, G, Fomenko, A, Foresti, I, Formanek, J, Franke, G, Gabathuler, E, Gabathuler, K, Garvey, J, Gassner, J, Gayler, J, Gerhards, R, Gerlich, C, Ghazaryan, S, Goerlich, L, Gogitidze, N, Grab, C, Grabski, V, Grassler, H, Greenshaw, T, Grindhammer, G, Hadig, T, Haidt, D, Hajduk, L, Haller, J, Haynes, WJ, Heinemann, B, Heinzelmann, G, Henderson, RCW, Hengstmann, S, Henschel, H, Heremans, R, Herrera, G, Herynek, I, Hildebrandt, M, Hilgers, M, Hiller, KH, Hladky, J, Hoting, P, Hoffmann, D, Horisberger, R, Hovhannisyan, A, Hurling, S, Ibbotson, M, Issever, C, Jacquet, M, Jaffre, M, Janauschek, L, Janssen, X, Jemanov, V, Jonsson, L, Johnson, C, Johnson, DP, Jones, MAS, Jung, H, Kant, D, Kapichine, M, Karlsson, M, Karschnick, O, Keil, F, Keller, N, Kennedy, J, Kenyon, IR, Kermiche, S, Kiesling, C, Kjellberg, P, Klein, A, Kleinwort, C, Kluge, T, Knies, G, Koblitz, B, Kolya, SD, Korbel, V, Kostka, P, Kotelnikov, SK, Koutouev, R, Koutov, A, Krehbiel, H, Kroseberg, J, Kruger, K, Kupper, A, Kuhr, T, Kurca, T, Lamb, D, Landon, MPJ, Lange, W, Lastovicka, T, Laycock, P, Lebailly, E, Lebedev, A, Leissner, B, Lemrani, R, Lendermann, V, Levonian, S, Lindstroem, M, List, B, Lobodzinska, E, Lobodzinski, B, Loginov, A, Loktionova, N, Lubimov, V, Luders, S, Luke, D, Lytkin, L, Mahlke-Kruger, H, Malden, N, Malinovski, E, Malinovski, I, Maracek, R, Marage, P, Marks, J, Marshall, R, Martyn, HU, Martyniak, J, Maxfield, SJ, Meer, D, Mehta, A, Meier, K, Meyer, AB, Meyer, H, Meyer, J, Meyer, PO, Mikocki, S, Milstead, D, Mkrtchyan, T, Mohr, R, Mohrdieck, S, Mondragon, MN, Moreau, F, Morozov, A, Morris, JV, Muller, K, Murin, P, Nagovizin, V, Naroska, B, Naumann, J, Naumann, T, Nellen, G, Newman, PR, Niebergall, F, Niebuhr, C, Nix, O, Nowak, G, Olsson, JE, Ozerov, D, Panassik, V, Pascaud, C, Patel, GD, Peez, M, Perez, E, Phillips, JP, Pitzl, D, Poschl, R, Potachnikova, I, Povh, B, Radel, G, Rauschenberger, J, Reimer, P, Reisert, B, Reyna, D, Risler, C, Rizvi, E, Robmann, P, Roosen, R, Rostovtsev, A, Rusakov, S, Rybicki, K, Sankey, DPC, Schatzel, S, Scheins, J, Schilling, FP, Schleper, P, Schmidt, D, Schmidt, S, Schmitt, S, Schneider, M, Schoeffel, L, Schoning, A, Schorner, T, Schroder, V, Schultz-Coulon, HC, Schwanenberger, C, Sedlak, K, Sefkow, F, Shekelyan, V, Sheviakov, I, Shtarkov, LN, Sirois, Y, Sloan, T, Smirnov, P, Soloviev, Y, South, D, Spaskov, V, Specka, A, Spitzer, H, Stamen, R, Stella, B, Stiewe, J, Straumann, U, Swart, M, Tasevsky, M, Tchetchelnitski, S, Thompson, G, Thompson, PD, Tobien, N, Tomasz, F, Traynor, D, Truol, P, Tsipolitis, G, Tsurin, I, Turnau, J, Turney, JE, Tzamariudaki, E, Udluft, S, Urban, M, Usik, A, Valkar, S, Valkarova, A, Vallee, C, Van Mechelen, P, Vassiliev, S, Vazdik, Y, Vichnevski, A, Vorobiev, M, Wacker, K, Wagner, J, Wallny, R, Waugh, B, Weber, G, Weber, M, Wegener, D, Werner, C, Werner, M, Werner, N, Wessels, M, White, G, Wiesand, S, Wilksen, T, Winde, M, Winter, GG, Wissing, C, Wobisch, M, Woehrling, EE, Wunsch, E, Wyatt, AC, Zacek, J, Zalesak, J, Zhang, Z, Zhokin, A, Zomer, F, zur Nedden, M, Collaboration, H, Damoiseaux, Magali, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), H1, H1 Collaboration, Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), and Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Rho meson, Meson, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], 010308 nuclear & particles physics, Virtual particle, Perturbative QCD, FOS: Physical sciences, HERA, 01 natural sciences, Helicity, 3. Good health, Gluon, Vertex (geometry), High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, 010306 general physics, Nuclear Experiment
Abstract: The helicity structure of the diffractive electroproduction of rho mesons, e + p -> e + rho + Y, is studied in a previously unexplored region of large four-momentum transfer squared at the proton vertex, t: 0 < t' < 3 GeV^2, where t' = |t| - |t|_min. The data used are collected with the H1 detector at HERA in the kinematic domain 2.5 < Q^2 < 60 GeV^2, 40 < W < 120 GeV. No t dependence of the r^04_00 spin density matrix element is found. A significant t dependent helicity non-conservation from the virtual photon to the rho meson is observed for the spin density matrix element combinations r^5_00+2r^5_11 and r^1_00+2r^1_11. These t dependences are consistently described by a perturbative QCD model based on the exchange of two gluons., 20 pages, 4 figures, 1 table
Published: 2002

41. Deep-Inelastic inclusive ep Scattering at low x and a determination of $\alpha s$

Author: Adloff, C, Andreev, V, Andrieu, B, Anthonis, T, Arkadov, V, Astvatsatourov, A, Ayyaz, I, Babaev, A, Bahr, J, Baranov, P, Barrelet, E, Bartel, W, Bassler, U, Bate, P, Beglarian, A, Behnke, O, Beier, C, Belousov, A, Benisch, T, Bergen, C, Bernardi, G, Berndt, T, Bizot, JC, Boudry, V, Braunschweig, W, Brisson, V, Broker, HB, Brown, DP, Bruckner, W, Bruel, P, Bruncko, D, Burger, J, Busser, FW, Bunyatyan, A, Burkhardt, H, Burrage, A, Buschhorn, G, Campbell, AJ, Cao, J, Carli, T, Caron, S, Chabert, E, Clarke, D, Clerbaux, B, Collard, C, Contreras, JG, Coppens, YR, Coughlan, JA, Cousinou, MC, Cox, BE, Cozzika, G, Cvach, J, Dainton, JB, Dau, WD, Daum, K, Davidsson, M, Delcourt, B, Delerue, N, Demirchyan, R, De Roeck, A, De Wolf, EA, Diaconu, C, Dixon, P, Dodonov, V, Dowell, JD, Droutskoi, A, Duprel, C, Eckerlin, G, Eckstein, D, Efremenko, V, Egli, S, Eichler, R, Eisele, F, Eisenhandler, E, Ellerbrock, A, Elsen, E, Erdmann, M, Erdmann, W, Faulkner, PJW, Favart, L, Fedotov, A, Felst, R, Ferencei, J, Ferron, S, Fleischer, M, Fleming, YH, Flugge, G, Fomenko, A, Foresti, I, Formanek, J, Foster, JM, Franke, G, Gabathuler, E, Gabathuler, K, Garvey, J, Gassner, J, Gayler, J, Gerhards, R, Ghazaryan, S, Glazov, A, Goerlich, L, Gogitidze, N, Goldberg, M, Goodwin, C, Grab, C, Grassler, H, Greenshaw, T, Grindhammer, G, Hadig, T, Haidt, D, Hajduk, L, Haynes, WJ, Heinemann, B, Heinzelmann, G, Henderson, RCW, Hengstmann, S, Henschel, H, Heremans, R, Herrera, G, Herynek, I, Hildebrandt, M, Hilgers, M, Hiller, KH, Hladky, J, Hoting, P, Hoffmann, D, Hoprich, W, Horisberger, R, Hurling, S, Ibbotson, M, Issever, C, Jacquet, M, Jaffre, M, Janauschek, L, Jansen, DM, Janssen, X, Jemanov, V, Jonsson, L, Johnson, DP, Jones, MAS, Jung, H, Kastli, HK, Kant, D, Kapichine, M, Karlsson, M, Karschnick, O, Keil, F, Keller, N, Kennedy, J, Kenyon, IR, Kermiche, S, Kiesling, C, Klein, M, Kleinwort, C, Knies, G, Koblitz, B, Kolya, SD, Korbel, V, Kostka, P, Kotelnikov, SK, Koutouev, R, Koutov, A, Krasny, MW, Krehbiel, H, Kroseberg, J, Kruger, K, Kupper, A, Kuhr, T, Kurca, T, Lahmann, R, Lamb, D, Landon, MPJ, Lange, W, Lastovicka, T, Lebailly, E, Lebedev, A, Leissner, B, Lemrani, R, Lendermann, V, Levonian, S, Lindstroem, M, List, B, Lobodzinska, E, Lobodzinski, B, Loginov, A, Loktionova, N, Lubimov, V, Luders, S, Luke, D, Lytkin, L, Magnussen, N, Mahlke-Kruger, H, Malden, N, Malinovski, E, Malinovski, I, Maracek, R, Marage, P, Marks, J, Marshall, R, Martyn, HU, Martyniak, J, Maxfield, SJ, Mehta, A, Meier, K, Merkel, P, Metlica, F, Meyer, AB, Meyer, H, Meyer, J, Meyer, PO, Mikocki, S, Milstead, D, Mkrtchyan, T, Mohr, R, Mohrdieck, S, Mondragon, MN, Moreau, F, Morozov, A, Morris, JV, Muller, K, Murin, P, Nagovizin, V, Naroska, B, Naumann, J, Naumann, T, Nellen, G, Newman, PR, Nicholls, TC, Niebergall, F, Niebuhr, C, Nix, O, Nowak, G, Nunnemann, T, Olsson, JE, Ozerov, D, Panassik, V, Pascaud, C, Patel, GD, Perez, E, Phillips, JP, Pitzl, D, Poschl, R, Potachnikova, I, Povh, B, Rabbertz, K, Radel, G, Rauschenberger, J, Reimer, P, Reisert, B, Reyna, D, Riess, S, Risler, C, Rizvi, E, Robmann, P, Roosen, R, Rostovtsev, A, Royon, C, Rusakov, S, Rybicki, K, Sankey, DPC, Scheins, J, Schilling, FP, Schleper, P, Schmidt, D, Schmitt, S, Schoeffel, L, Schoning, A, Schorner, T, Schroder, V, Schultz-Coulon, HC, Schwanenberger, C, Sedlak, K, Sefkow, F, Shekelyan, V, Sheviakov, I, Shtarkov, LN, Siegmon, G, Sievers, P, Sirois, Y, Sloan, T, Smirnov, P, Solochenko, V, Soloviev, Y, Spaskov, V, Specka, A, Spitzer, H, Stamen, R, Steinhart, J, Stella, B, Stellberger, A, Stiewe, J, Straumann, U, Struczinski, W, Swart, M, Tasevsky, M, Tchernyshov, V, Tchetchelnitski, S, Thompson, G, Thompson, PD, Tobien, N, Traynor, D, Truol, P, Tsipolitis, G, Tsurin, I, Turnau, J, Turney, JE, Tzamariudaki, E, Udluft, S, Usik, A, Valkar, S, Valkarova, A, Vallee, C, Van Mechelen, P, Vassiliev, S, Vazdik, Y, Vichnevski, A, von Dombrowski, S, Wacker, K, Wallny, R, Walter, T, Waugh, B, Weber, G, Weber, M, Wegener, D, Werner, M, White, G, Wiesand, S, Wilksen, T, Winde, M, Winter, GG, Wissing, C, Wobisch, M, Wollatz, H, Wunsch, E, Wyatt, AC, Zacek, J, Zalesak, J, Zhang, Z, Zhokin, A, Zomer, F, Zsembery, J, zur Nedden, M, Collaboration, H, Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), H1, Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), and Kerec, Hélène
Subjects: Physics, Quantum chromodynamics, Particle physics, Luminosity (scattering theory), Physics and Astronomy (miscellaneous), Proton, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], 010308 nuclear & particles physics, Scattering, FOS: Physical sciences, HERA, 01 natural sciences, Gluon, High Energy Physics - Experiment, Momentum, High Energy Physics - Experiment (hep-ex), DGLAP, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], 010306 general physics, Engineering (miscellaneous)
Abstract: A precise measurement of the inclusive deep-inelastic e^+p scattering cross section is reported in the kinematic range 1.5, 68 pages, 24 figures and 18 tables
Published: 2001

42. Dijet Production in Charged and Neutral Current $e^{+}p$ Interactions at High $Q^{2}$

Author: Adloff, C., Andreev, V., Andrieu, B., Anthonis, T., Arkadov, V., Astvatsatourov, A., Ayyaz, I., Babaev, A., Bähr, J., Baranov, P., Barrelet, E., Bartel, W., Bate, P., Beglarian, A., Behnke, O., Beier, C., Belousov, A., Benisch, T., Berger, Ch, Berndt, T., Bizot, J. C., Boudry, V., Braunschweig, W., Brisson, V., Bröker, H. -B, Brown, D. P., Bräckner, W., Bruel, P., Bruncko, D., Bürger, J., Büsser, F. W., Bunyatyan, A., Burkhardt, H., Burrage, A., Buschhorn, G., Campbell, A. J., Jun Cao, Carli, T., Caron, S., Chabert, E., Clarke, D., Clerbaux, B., Collard, C., Contreras, J. G., Coppens, Y. R., Coughlan, J. A., Cousinou, M. -C, Cox, B. E., Cozzika, G., Cvach, J., Dainton, J. B., Dau, W. D., Daum, K., Davidsson, M., Delcourt, B., Delerue, N., Demirchyan, R., Roeck, A., Wolf, E. A., Diaconu, C., Dixon, P., Dodonov, V., Dowell, J. D., Droutskoi, A., Duprel, C., Eckerlin, G., Eckstein, D., Efremenko, V., Egli, S., Eichler, R., Eisele, F., Eisenhandler, E., Ellerbrock, M., Elsen, E., Erdmann, M., Erdmann, W., Faulkner, P. J. W., Favart, L., Fedotov, A., Felst, R., Ferencei, J., Ferron, S., Fleischer, M., Fleming, Y. H., Flügge, G., Fomenko, A., Foresti, I., Formánek, J., Foster, J. M., Franke, G., Gabathuler, E., Gabathuler, K., Garvey, J., Gassner, J., Gayler, J., Gerhards, R., Ghazaryan, S., Goerlich, L., Gogitidze, N., Goldberg, M., Goodwin, C., Grab, C., Grässler, H., Greenshaw, T., Grindhammer, G., Hadig, T., Haidt, D., Hajduk, L., Haynes, W. J., Heinemann, B., Heinzelmann, G., Henderson, R. C. W., Hengstmann, S., Henschel, H., Heremans, R., Herrera, G., Herynek, I., Hildebrandt, M., Hilgers, M., Hiller, K. H., Hladký, J., Höting, P., Hoffmann, D., Horisberger, R., Hurling, S., Ibbotson, M., Işsever, C., Jacquet, M., Jaffre, M., Janauschek, L., Jansen, D. M., Janssen, X., Jemanov, V., Jönsson, L., Johnson, D. P., Jones, M. A. S., Jung, H., Kästli, H. K., Kant, D., Kapichine, M., Karlsson, M., Karschnick, O., Keil, F., Keller, N., Kennedy, J., Kenyon, I. R., Kermiche, S., Kiesling, C., Kjellberg, P., Klein, M., Kleinwort, C., Knies, G., Koblitz, B., Kolya, S. D., Korbel, V., Kostka, P., Kotelnikov, S. K., Koutouev, R., Koutov, A., Krasny, M. W., Krehbiel, H., Kroseberg, J., Krüger, K., Küpper, A., Kuhr, T., Kurča, T., Lahmann, R., Lamb, D., Landon, M. P. J., Lange, W., Laštovička, T., Laycock, P., Lebailly, E., Lebedev, A., Leißner, B., Lemrani, R., Lendermann, V., Levonian, S., Lindstroem, M., List, B., Lobodzinska, E., Lobodzinski, B., Loginov, A., Loktionova, N., Lubimov, V., Lüders, S., Lüke, D., Lytkin, L., Magnussen, N., Mahlke-Krüger, H., Malden, N., Malinovski, E., Malinovski, I., Maraček, R., Marage, P., Marks, J., Marshall, R., Martyn, H. -U, Martyniak, J., Maxfield, S. J., Mehta, A., Meier, K., Merkel, P., Meyer, A. B., Meyer, H., Meyer, J., Meyer, P. -O, Mikocki, S., Milstead, D., Mkrtchyan, T., Mohr, R., Mohrdieck, S., Mondragon, M. N., Moreau, F., Morozov, A., Morris, J. V., Müller, K., Murín, P., Nagovizin, V., Naroska, B., Naumann, J., Naumann, Th, Nellen, G., Newman, P. R., Nicholls, T. C., Niebergall, F., Niebuhr, C., Nix, O., Nowak, G., Nunnemann, T., Olsson, J. E., Ozerov, D., Panassik, V., Pascaud, C., Patel, G. D., Perez, E., Phillips, J. P., Pitzl, D., Päschl, R., Potachnikova, I., Povh, B., Rabbertz, K., Rädel, G., Rauschenberger, J., Reimer, P., Reisert, B., Reyna, D., Riess, S., Risler, C., Rizvi, E., Robmann, P., Roosen, R., Rostovtsev, A., Royon, C., Rusakov, S., Rybicki, K., Sankey, D. P. C., Scheins, J., Schilling, F. -P, Schleper, P., Schmidt, D., Schmitt, S., Schoeffel, L., Schöning, A., Schörner, T., Schröder, V., Schultz-Coulon, H. -C, Schwanenberger, C., Sedlák, K., Sefkow, F., Shekelyan, V., Sheviakov, I., Shtarkov, L. N., Sievers, P., Sirois, Y., Sloan, T., Smirnov, P., Solochenko, V., Soloviev, Y., Spaskov, V., Specka, A., Spitzer, H., Stamen, R., Steinhart, J., Stella, B., Stellberger, A., Stiewe, J., Straumann, U., Struczinski, W., Swart, M., Taševský, M., Tchernyshov, V., Tchetchelnitski, S., Thompson, G., Thompson, P. D., Tobien, N., Traynor, D., Truöl, P., Tsipolitis, G., Tsurin, I., Turnau, J., Turney, J. E., Tzamariudaki, E., Udluft, S., Usik, A., Valkár, S., Valkárová, A., Vallée, C., Mechelen, P., Vassiliev, S., Vazdik, Y., Vichnevski, A., Wacker, K., Wallny, R., Walter, T., Waugh, B., Weber, G., Weber, M., Wegener, D., Werner, M., White, G., Wiesand, S., Wilksen, T., Winde, M., Winter, G. -G, Wissing, Ch, Wobisch, M., Wollatz, H., Wänsch, E., Wyatt, A. C., Žáček, J., Zálešák, J., Zhang, Z., Zhokin, A., Zomer, F., Zsembery, J., Zur Nedden, M., Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), H1, Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), and H1 Collaboration
Subjects: Quantum chromodynamics, Physics, Particle physics, Physics and Astronomy (miscellaneous), Neutral current, 010308 nuclear & particles physics, Electroweak interaction, High Energy Physics::Phenomenology, FOS: Physical sciences, Perturbative QCD, Parton, HERA, Jet (particle physics), 01 natural sciences, 7. Clean energy, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, 010306 general physics, Engineering (miscellaneous), Charged current
Abstract: Jet production in charged and neutral current events in the kinematic range of Q^2 from 640 to 35000 GeV^2 is studied in deep-inelastic positron-proton scattering at HERA. The measured rate of multi-jet events and distributions of jet polar angle, transverse energy, dijet mass, and other dijet variables are presented. Using parton densities derived from inclusive DIS cross sections, perturbative QCD calculations in NLO are found to give a consistent description of both the neutral and charged current dijet production. A direct, model independent comparison of the jet distributions in charged and neutral current events confirms that the QCD dynamics of the hadronic final state is independent of the underlying electroweak scattering process., Comment: 28 pages, 10 figures, 4 tables
Published: 2001

43. Diffractive jet production in deep-inelastic e+ p collisions at HERA

Author: Adloff, C, Andreev, V, Andrieu, B, Anthonis, T, Arkadov, V, Astvatsatourov, A, Ayyaz, I, Babaev, A, Bahr, J, Baranov, P, Barrelet, E, Bartel, S, Bate, P, Beglarian, A, Behnke, O, Beier, C, Belousov, A, Benisch, T, Berger, C, Berndt, T, Bizot, JC, Boudry, V, Braunschweig, W, Brisson, V, Broker, HB, Brown, DP, Bruckner, S, Bruel, P, Bruncko, D, Burger, J, Busser, FW, Bunyatyan, A, Burkhardt, H, Burrage, A, Buschhorn, G, Campbell, AJ, Cao, J, Carli, T, Caron, S, Chabert, E, Clarke, D, Clerbaux, B, Collard, C, Contreras, JG, Coppens, YR, Coughlan, JA, Cousinou, MC, Cox, BE, Cozzika, G, Cvach, J, Dainton, JB, Dau, WD, Daum, K, Davidsson, M, Delcourt, B, Delerue, N, Demirchyan, R, De Roeck, A, De Wolf, EA, Diaconu, C, Dixon, P, Dodonov, V, Dowell, JD, Droutskoi, A, Duprel, D, Eckerlin, G, Eckstein, D, Efremenko, V, Egli, S, Eichler, R, Eisele, F, Eisenhandler, E, Ellerbrock, M, Elsen, E, Erdmann, M, Erdmann, W, Faulkner, PJW, Favart, L, Fedotov, A, Felst, R, Ferencei, J, Ferron, S, Fleischer, M, Fleming, YH, Flugge, G, Fomenko, A, Foresti, I, Formanek, J, Foster, JM, Franke, G, Gabathuler, E, Gabathuler, K, Garvey, J, Gassner, J, Gayler, J, Gerhards, R, Ghazaryan, S, Goerlich, L, Gogitidze, N, Goldberg, M, Goodwin, C, Crab, C, Grassler, H, Greenshaw, T, Grindhammer, G, Hadig, T, Haidt, D, Hajduk, L, Haynes, WJ, Heinemann, B, Heinzelmann, G, Henderson, RCW, Hengstmann, S, Henschel, H, Heremans, N, Herrera, G, Herynek, I, Hildebrandt, M, Hilgers, M, Hiller, KH, Hladky, J, Hoting, P, Hoffmann, D, Horisberger, R, Hurling, S, Ibbotson, M, Issever, C, Jacquet, M, Jaffre, M, Janauschek, L, Jansen, DM, Janssen, X, Jemanov, V, Jonsson, L, Johnson, DP, Jones, MAS, Jung, A, Kastli, HK, Kant, D, Kapichine, I, Karlsson, M, Karschnick, O, Keil, F, Keller, N, Kennedy, J, Kenyon, IR, Kermiche, S, Kiesling, C, Kjellberg, P, Klein, M, Kleinwort, C, Knies, G, Koblitz, B, Kolya, SD, Korbel, V, Kostka, P, Kotelnikov, SK, Koutouev, R, Koutov, A, Krasny, MW, Krehbiel, R, Kroseberg, J, Kruger, K, Kupper, A, Kuhr, T, Kurca, T, Lahmann, R, Lamb, D, Landon, MPJ, Lange, W, Lastovicka, T, Laycock, P, Lebailly, E, Lebedev, A, Leissner, B, Lemrani, R, Lendermann, V, Levonian, S, Lindstroem, M, List, B, Lobodzinska, E, Lobodzinski, B, Loginov, A, Loktionova, N, Lubimov, V, Luders, S, Luke, D, Lytkin, L, Magnussen, N, Mahlke-Kruger, H, Malden, N, Malinovski, E, Malinovski, I, Maracek, R, Marage, P, Marks, J, Marshall, R, Martyn, HU, Martyniak, J, Maxfield, SJ, Mehta, A, Meier, K, Merkel, P, Meyer, AB, Meyer, H, Meyer, J, Meyer, PO, Mikocki, S, Milstead, D, Mkrtchyan, T, Mohr, R, Mohrdieck, S, Mondragon, MN, Moreau, F, Morozov, A, Morris, JV, Muller, K, Murin, P, Nagovizin, V, Naroska, B, Naumann, J, Naumann, T, Nellen, G, Newman, PR, Nicholls, TC, Niebergall, F, Niebuhr, C, Nix, O, Nowak, G, Nunnemann, T, Olsson, JE, Ozerov, D, Panassik, V, Pascaud, C, Patel, GD, Perez, E, Phillips, JP, Pitzl, D, Poschl, R, Potachnikova, I, Povh, B, Rabbertz, K, Radel, G, Rauschenberger, J, Reimer, P, Reisert, B, Reyna, D, Riess, S, Risler, C, Rizvi, E, Robmann, P, Roosen, K, Rostovtsev, A, Royon, C, Rusakov, S, Rybicki, K, Sankey, DPC, Scheins, J, Schilling, FP, Schleper, P, Schmidt, D, Schmitt, S, Schoeffel, L, Schoning, A, Schorner, T, Schroder, V, Schultz-Coulon, HC, Schwanenberger, C, Sedlak, K, Sefkow, F, Shekelyan, V, Sheviakov, I, Shtarkov, LN, Sievers, P, Sirois, Y, Sloan, T, Smirnov, P, Solochenko, V, Soloviev, Y, Spaskov, V, Specka, A, Spitzer, H, Stamen, R, Steinhart, J, Stella, B, Stellberger, A, Stiewe, J, Straumann, U, Struczinski, W, Swart, M, Tasevsky, M, Tchernyshov, V, Tchetchelnitski, S, Thompson, G, Thompson, PD, Tobien, N, Traynor, D, Truol, P, Tsipolitis, G, Tsurin, I, Turnau, J, Turney, JE, Tzamariudaki, E, Udluft, S, Usik, A, Valkar, S, Valkarova, A, Vallee, C, Van Mechelen, P, Vassiliev, S, Vazdik, Y, Vichnevski, A, Wacker, K, Wallny, R, Walter, T, Waugh, B, Weber, G, Weber, M, Wegener, D, Werner, M, White, G, Wiesand, S, Wilksen, T, Winde, M, Winter, GG, Wissing, C, Wobisch, M, Wollatz, H, Wunsch, E, Wyatt, AC, Zacek, H, Zalesak, J, Zhang, Z, Zhokin, A, Zomer, F, Zsembery, J, zur Nedden, M, Collaboration, H, Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), H1, H1 Collaboration, Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), and Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)
Subjects: Physics, Particle physics, Photon, Luminosity (scattering theory), Physics and Astronomy (miscellaneous), 010308 nuclear & particles physics, Scattering, Hadron, FOS: Physical sciences, HERA, Jet (particle physics), 01 natural sciences, High Energy Physics - Experiment, Gluon, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Rapidity, High Energy Physics::Experiment, 010306 general physics, Engineering (miscellaneous)
Abstract: A measurement is presented of dijet and 3-jet cross sections in low-|t| diffractive deep-inelastic scattering interactions of the type ep -> eXY, where the system X is separated by a large rapidity gap from a low-mass baryonic system Y. Data taken with the H1 detector at HERA, corresponding to an integrated luminosity of 18.0 pb^(-1), are used to measure hadron level single and double differential cross sections for 44 GeV. The energy flow not attributed to jets is also investigated. The measurements are consistent with a factorising diffractive exchange with trajectory intercept close to 1.2 and tightly constrain the dominating diffractive gluon distribution. Viewed in terms of the diffractive scattering of partonic fluctuations of the photon, the data require the dominance of qqbarg over qqbar states. Soft colour neutralisation models in their present form cannot simultaneously reproduce the shapes and the normalisations of the differential cross sections. Models based on 2-gluon exchange are able to reproduce the shapes of the cross sections at low x_pom values., Comment: 35 pages, 12 figures, 7 tables
Published: 2001

44. On the Rise of the Proton Structure Function F$_2$ Towards Low x

Author: Adloff, C, Andreev, V, Andrieu, B, Anthonis, T, Arkadov, V, Astvatsatourov, A, Babaev, A, Bahr, J, Baranov, P, Barrelet, E, Bartel, W, Bate, P, Becker, J, Beglarian, A, Behnke, O, Beier, C, Belousov, A, Benisch, T, Berger, C, Berndt, T, Bizot, JC, Boehme, J, Boudry, V, Braunschweig, W, Brisson, V, Broker, HB, Brown, DP, Bruckner, W, Bruncko, D, Burger, J, Busser, FW, Bunyatyan, A, Burrage, A, Buschhorn, G, Bystritskaya, L, Campbell, AJ, Cao, J, Caron, S, Cassol-Brunner, F, Clarke, D, Clerbaux, B, Collard, C, Contreras, JG, Coppens, YR, Coughlan, JA, Cousinou, MC, Cox, BE, Cozzika, G, Cvach, J, Dainton, JB, Dau, WD, Daum, K, Davidsson, M, Delcourt, B, Delerue, N, Demirchyan, R, De Roeck, A, De Wolf, EA, Diaconu, C, Dingfelder, J, Dixon, P, Dodonov, V, Dowell, JD, Droutskoi, A, Dubak, A, Duprel, C, Eckerlin, G, Eckstein, D, Efremenko, V, Egli, S, Eichler, R, Eisele, F, Eisenhandler, E, Ellerbrock, M, Elsen, E, Erdmann, M, Erdmann, W, Faulkner, PJW, Favart, L, Fedotov, A, Felst, R, Ferencei, J, Ferron, S, Fleischer, M, Fleming, YH, Flugge, G, Fomenko, A, Foresti, I, Formanek, J, Franke, G, Gabathuler, E, Gabathuler, K, Garvey, J, Gassner, J, Gayler, J, Gerhards, R, Gerlich, C, Ghazaryan, S, Goerlich, L, Gogitidze, N, Goldberg, M, Grab, C, Grassler, H, Greenshaw, T, Grindhammer, G, Hadig, T, Haidt, D, Hajduk, L, Haller, J, Haynes, WJ, Heinemann, B, Heinzelmann, G, Henderson, RCW, Hengstmann, S, Henschel, H, Heremans, R, Herrera, G, Herynek, I, Hildebrandt, M, Hilgers, M, Hiller, KH, Hladky, J, Hoting, P, Hoffmann, D, Horisberger, R, Hurling, S, Ibbotson, M, Issever, C, Jacquet, M, Jaffre, M, Janauschek, L, Janssen, X, Jemanov, V, Jonsson, L, Johnson, C, Johnson, DP, Jones, MAS, Jung, H, Kant, D, Kapichine, M, Karlsson, M, Karschnick, O, Keil, F, Keller, N, Kennedy, J, Kenyon, IR, Kermiche, S, Kiesling, C, Kjellberg, P, Klein, M, Kleinwort, C, Kluge, T, Knies, G, Koblitz, B, Kolya, SD, Korbel, V, Kostka, P, Kotelnikov, SK, Koutouev, R, Koutov, A, Krehbiel, H, Kroseberg, J, Kruger, K, Kupper, A, Kuhr, T, Kurca, T, Lahmann, R, Lamb, D, Landon, MPJ, Lange, W, Lastovicka, T, Laycock, P, Lebailly, E, Lebedev, A, Leissner, B, Lemrani, R, Lendermann, V, Levonian, S, Lindstroem, M, List, B, Lobodzinska, E, Lobodzinski, B, Loginov, A, Loktionova, N, Lubimov, V, Luders, S, Luke, D, Lytkin, L, Mahlke-Kruger, H, Malden, N, Malinovski, E, Malinovski, I, Maracek, R, Marage, P, Marks, J, Marshall, R, Martyn, HU, Martyniak, J, Maxfield, SJ, Meer, D, Mehta, A, Meier, K, Meyer, AB, Meyer, H, Meyer, J, Meyer, PO, Mikocki, S, Milstead, D, Mkrtchyan, T, Mohr, R, Mohrdieck, S, Mondragon, MN, Moreau, F, Morozov, A, Morris, JV, Muller, K, Murin, P, Nagovizin, V, Naroska, B, Naumann, J, Naumann, T, Nellen, G, Newman, PR, Nicholls, TC, Niebergall, F, Niebuhr, C, Nix, O, Nowak, G, Olsson, JE, Ozerov, D, Panassik, V, Pascaud, C, Patel, GD, Peez, M, Perez, E, Phillips, JP, Pitzl, D, Poschl, R, Potachnikova, I, Povh, B, Rabbertz, K, Radel, G, Rauschenberger, J, Reimer, P, Reisert, B, Reyna, D, Risler, C, Rizvi, E, Robmann, P, Roosen, R, Rostovtsev, A, Rusakov, S, Rybicki, K, Sankey, DPC, Scheins, J, Schilling, FP, Schleper, P, Schmidt, D, Schmidt, S, Schmitt, S, Schneider, M, Schoeffel, L, Schoning, A, Schorner, T, Schroder, V, Schultz-Coulon, HC, Schwanenberger, C, Sedlak, K, Sefkow, F, Shekelyan, V, Sheviakov, I, Shtarkov, LN, Sirois, Y, Sloan, T, Smirnov, P, Soloviev, Y, South, D, Spaskov, V, Specka, A, Spitzer, H, Stamen, R, Stella, B, Stiewe, J, Straumann, U, Swart, M, Tasevsky, M, Tchernyshov, V, Tchetchelnitski, S, Thompson, G, Thompson, PD, Tobien, N, Traynor, D, Truol, P, Tsipolitis, G, Tsurin, I, Turnau, J, Turney, JE, Tzamariudaki, E, Udluft, S, Urban, M, Usik, A, Valkar, S, Valkarova, A, Vallee, C, Van Mechelen, P, Vassiliev, S, Vazdik, Y, Vichnevski, A, Wacker, K, Wallny, R, Waugh, B, Weber, G, Weber, M, Wegener, D, Werner, C, Werner, M, Werner, N, White, G, Wiesand, S, Wilksen, T, Winde, M, Winter, GG, Wissing, C, Wobisch, M, Woehrling, EE, Wunsch, E, Wyatt, AC, Zacek, J, Zalesak, J, Zhang, Z, Zhokin, A, Zomer, F, Zsembery, J, zur Nedden, M, Collaboration, H, Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), H1, Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), H1 Collaboration, and Damoiseaux, Magali
Subjects: Physics, Particle physics, Nuclear and High Energy Physics, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], Proton, 010308 nuclear & particles physics, Scattering, Structure function, FOS: Physical sciences, Derivative, Lambda, 01 natural sciences, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, Domain (ring theory), Physique des particules élémentaires, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Atomic physics, 010306 general physics
Abstract: A measurement of the derivative (∂ ln F2/∂ ln x)Q2 = -λ(x, Q2) of the proton structure function F2 is presented in the low x domain of deeply inelastic positron-proton scattering. For 5 × 10-5 ≤ x ≤ 0.01 and Q2 ≥ 1.5GeV2, λ(x, Q2) is found to be independent of jc and to increase linearly with In Q2. © 2001 Elsevier Science B.V. All rights reserved., 0, SCOPUS: ar.j, H1 Collaboration., info:eu-repo/semantics/published
Published: 2001

45. Photoproduction with a leading proton at HERA

Author: Adloff, C, Andreev, V, Andrieu, B, Anthonis, T, Arkadov, V, Astvatsatourov, A, Ayyaz, I, Babaev, A, Bahr, J, Baranov, P, Barrelet, E, Bartel, W, Bate, P, Beglarian, A, Behnke, O, Beier, C, Belousov, A, Benisch, T, Berger, C, Berndt, T, Bizot, JC, Boudry, V, Braunschweig, W, Brisson, V, Broker, HB, Brown, DP, Bruckner, W, Bruel, P, Bruncko, D, Burger, J, Busser, FW, Bunyatyan, A, Burkhardt, H, Burrage, A, Buschhorn, G, Campbell, AJ, Cao, J, Carli, T, Caron, S, Chabert, E, Clarke, D, Clerbaux, B, Collard, C, Contreras, JG, Coppens, YR, Coughlan, JA, Cousinou, MC, Cox, BE, Cozzika, G, Cvach, J, Dainton, JB, Dau, WD, Daum, K, Davidsson, M, Delcourt, B, Delerue, N, Demirchyan, R, De Roeck, A, De Wolf, EA, Diaconu, C, Dixon, P, Dodonov, V, Dowell, JD, Droutskoi, A, Duprel, C, Eckerlin, G, Eckstein, D, Efremenko, V, Egli, S, Eichler, R, Eisele, F, Eisenhandler, E, Ellerbrock, M, Elsen, E, Erdmann, M, Erdmann, W, Faulkner, PJW, Favart, L, Fedotov, E, Felst, R, Ferencei, J, Ferron, S, Fleischer, M, Fleming, YH, Flugge, G, Fomenko, A, Foresti, I, Formanek, J, Foster, JM, Franke, G, Gabathuler, E, Gabathuler, K, Garvey, J, Gassner, J, Gayler, J, Gerhards, R, Ghazaryan, S, Goerlich, L, Gogitidze, N, Goldberg, M, Goodwin, C, Grab, C, Grassler, H, Greenshaw, T, Grindhammer, G, Hadig, T, Haidt, D, Hajduk, L, Haynes, WJ, Heinemann, B, Heinzelmann, G, Henderson, RCW, Hengstmann, S, Henschel, H, Heremans, R, Herrera, G, Herynek, I, Hildebrandt, M, Hilgers, M, Hiller, KH, Hladky, J, Hoting, P, Hoffmann, D, Horisberger, R, Hurling, S, Ibbotson, M, Issever, C, Jacquet, M, Jaffre, M, Janauschek, L, Jansen, DM, Janssen, X, Jemanov, V, Jonsson, L, Johnson, DP, Jones, MAS, Jung, H, Kastli, HK, Kant, D, Kapichine, M, Karlsson, M, Karschnick, O, Keil, F, Keller, N, Kennedy, J, Kenyon, IR, Kermiche, S, Kiesling, C, Kjellberg, P, Klein, M, Kleinwort, C, Knies, G, Koblitz, B, Kolya, SD, Korbel, V, Kostka, P, Kotelnikov, SK, Koutouev, R, Koutov, A, Krasny, MW, Krehbiel, H, Kroseberg, J, Kruger, K, Kupper, A, Kuhr, T, Kurca, T, Lahmann, R, Lamb, D, Landon, MPJ, Lange, W, Lastovicka, T, Laycock, P, Lebailly, E, Lebedev, A, Leissner, B, Lemrani, R, Lendermann, V, Levonian, S, Lindstroem, M, List, B, Lobodzinska, E, Lobodzinski, B, Loginov, A, Loktionova, N, Lubimov, V, Luders, S, Luke, D, Lytkin, L, Magnussen, N, Mahlke-Kruger, H, Malden, N, Malinovski, E, Malinovski, I, Maracek, R, Marage, P, Marks, J, Marshall, R, Martyn, HU, Martyniak, J, Maxfield, SJ, Mehta, A, Meier, K, Merkel, P, Meyer, AB, Meyer, H, Meyer, J, Meyer, PO, Mikocki, S, Milstead, D, Mkrtchyan, T, Mohr, R, Mohrdieck, S, Mondragon, MN, Moreau, F, Morozov, A, Morris, JV, Muller, K, Murin, P, Nagovizin, V, Naroska, B, Naumann, J, Naumann, T, Nellen, G, Newman, PR, Nicholls, TC, Niebergall, F, Niebuhr, C, Nix, O, Nowak, G, Nunnemann, T, Olsson, JE, Ozerov, D, Panassik, V, Pascaud, C, Patel, GD, Perez, E, Phillips, JP, Pitzl, D, Poschl, R, Potachnikova, I, Povh, B, Rabbertz, K, Radel, G, Rauschenberger, J, Reimer, P, Reisert, B, Reyna, D, Riess, S, Risler, C, Rizvi, E, Robmann, P, Roosen, R, Rostovtsev, A, Royon, C, Rusakov, S, Rybicki, K, Sankey, DPC, Scheins, J, Schilling, FP, Schleper, P, Schmidt, D, Schmitt, S, Schoeffel, L, Schoning, A, Schorner, T, Schroder, V, Schultz-Coulon, HC, Schwanenberger, C, Sedlak, K, Sefkow, F, Shekelyan, V, Sheviakov, I, Shtarkov, LN, Sievers, P, Sirois, Y, Sloan, T, Smirnov, P, Solochenko, V, Soloviev, Y, Spaskov, V, Specka, A, Spitzer, H, Stamen, R, Steinhart, J, Stella, B, Stellberger, A, Stiewe, J, Straumann, U, Struczinski, W, Swart, M, Tasevsky, M, Tchernyshov, V, Tchetchelnitski, S, Thompson, G, Thompson, PD, Tobien, N, Traynor, D, Truol, P, Tsipolitis, G, Tsurin, I, Turnau, J, Turney, JE, Tzamariudaki, E, Udluft, S, Usik, A, Valkar, S, Valkarova, A, Vallee, C, Van Mechelen, P, Vassiliev, S, Vazdik, Y, Vichnevski, A, Wacker, K, Wallny, R, Walter, T, Waugh, B, Weber, G, Weber, M, Wegener, D, Werner, M, White, G, Wiesand, S, Wilksen, T, Winde, M, Winter, GG, Wissing, C, Wobisch, M, Wollatz, H, Wunsch, E, Wyatt, AC, Zacek, J, Zalesak, J, Zhang, Z, Zhokin, A, Zomer, F, Zsembery, J, zur Nedden, M, Collaboration, H, Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), H1, Kerec, Hélène, H1 Collaboration, Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), and Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Photon, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], 010308 nuclear & particles physics, FOS: Physical sciences, HERA, Deep inelastic scattering, 01 natural sciences, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), Factorization, 0103 physical sciences, Transverse momentum, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, 010306 general physics, Nuclear Experiment
Abstract: The total cross section for the photoproduction process with a leading proton in the final state has been measured at gamma p centre-of-mass energies W of 91, 181 and 231 GeV. The measured cross sections apply to the kinematic range with the transverse momentum of the scattered proton restricted to p_Tproton Xp')(W,z)/dz is observed to be independent of W and z within the measurement errors and amounts to 8.05 +- 0.06 stat +- 0.89 syst mub on average. The data are well described by a Triple Regge model in which the process is mediated by a mixture of exchanges with an effective Regge trajectory of intercept alpha_i(0)=0.33 +- 0.04 stat +- 0.04 syst. The total cross section for the interaction of the photon with this mixture (gamma alpha_i -> X) can be described by an effective trajectory of intercept alpha_k(0)=0.99 +- 0.01 stat +- 0.05 syst. Predictions based on previous triple Regge analyses of pp-> pX data assuming vertex factorisation are broadly consistent with the gamma p data. The measured cross sections are compared with deep inelastic scattering leading proton data in the same region of z and pT_proton for photon virtuality Q^2 > 2.5 GeV^2. The ratio of the cross section for leading proton production to the total cross section is found to rise with Q^2., 17 pages, 6 figures, 1 table, analysis has been extended by comparison with pp data
Published: 2001

46. Measurement of Neutral and Charged Current Cross Sections in Electron-Proton Collisions at High Q^2

Author: Adloff, C, Andreev, V, Andrieu, B, Anthonis, T, Arkadov, V, Astvatsatourov, A, Ayyaz, I, Babaev, A, Bahr, J, Baranov, P, Barrelet, E, Bartel, W, Bassler, U, Bate, P, Beglarian, A, Behnke, O, Beier, C, Belousov, A, Benisch, T, Berger, C, Bernardi, G, Berndt, T, Bizot, JC, Boudry, V, Braunschweig, W, Brisson, V, Broker, HB, Brown, DP, Bruckner, W, Bruel, P, Bruncko, D, Burger, J, Busser, FW, Bunyatyan, A, Burkhardt, H, Burrage, A, Buschhorn, G, Campbell, AJ, Cao, J, Carli, T, Caron, S, Chabert, E, Clarke, D, Clerbaux, B, Collard, C, Contreras, JG, Coppens, YR, Coughlan, JA, Cousinou, MC, Cox, BE, Cozzika, G, Cvach, J, Dainton, JB, Dau, WD, Daum, K, Davidsson, M, Delcourt, B, Delerue, N, Demirchyan, R, De Roeck, A, De Wolf, EA, Diaconu, C, Dixon, P, Dodonov, V, Dowell, JD, Droutskoi, A, Dubak, A, Duprel, C, Eckerlin, G, Eckstein, D, Efremenko, V, Egli, S, Eichler, R, Eisele, F, Eisenhandler, E, Ellerbrock, M, Elsen, E, Erdmann, M, Erdmann, W, Faulkner, PJW, Favart, L, Fedotov, A, Felst, R, Ferencei, J, Ferron, S, Fleischer, M, Fleming, YH, Flugge, G, Fomenko, A, Foresti, I, Formanek, J, Foster, JM, Franke, G, Gabathuler, E, Gabathuler, K, Garvey, J, Gassner, J, Gayler, J, Gerhards, R, Ghazaryan, S, Goerlich, L, Gogitidze, N, Goldberg, M, Goodwin, C, Grab, C, Grassler, H, Greenshaw, T, Grindhammer, G, Hadig, T, Haidt, D, Hajduk, L, Haynes, WJ, Heinemann, B, Heinzelmann, G, Henderson, RCW, Hengstmann, S, Henschel, H, Heremans, R, Herrera, G, Herynek, I, Hildebrandt, M, Hilgers, M, Hiller, KH, Hladky, J, Hoting, P, Hoffmann, D, Horisberger, R, Hurling, S, Ibbotson, M, Issever, C, Jacquet, M, Jaffre, M, Janauschek, L, Jansen, DM, Janssen, X, Jemanov, V, Jonsson, L, Johnson, DP, Jones, MAS, Jung, H, Kastli, HK, Kant, D, Kapichine, M, Karlsson, M, Karschnick, O, Keil, F, Keller, N, Kennedy, J, Kenyon, IR, Kermiche, S, Kiesling, C, Kjellberg, P, Klein, M, Kleinwort, C, Knies, G, Koblitz, B, Kolya, SD, Korbel, V, Kostka, P, Kotelnikov, SK, Koutouev, R, Koutov, A, Krasny, MW, Krehbiel, H, Kroseberg, J, Kruger, K, Kupper, A, Kuhr, T, Kurca, T, Lahmann, R, Lamb, D, Landon, MPJ, Lange, W, Lastovicka, T, Laycock, P, Lebailly, E, Lebedev, A, Leissner, B, Lemrani, R, Lendermann, V, Levonian, S, Lindstroem, M, List, B, Lobodzinska, E, Lobodzinski, B, Loginov, A, Loktionova, N, Lubimov, V, Luders, S, Luke, D, Lytkin, L, Magnussen, N, Mahlke-Kruger, H, Malden, N, Malinovski, E, Malinovski, I, Maracek, R, Marage, P, Marks, J, Marshall, R, Martyn, HU, Martyniak, J, Maxfield, SJ, Mehta, A, Meier, K, Merkel, P, Meyer, AB, Meyer, H, Meyer, J, Meyer, PO, Mikocki, S, Milstead, D, Mkrtchyan, T, Mohr, R, Mohrdieck, S, Mondragon, MN, Moreau, F, Morozov, A, Morris, JV, Muller, K, Murin, P, Nagovizin, V, Naroska, B, Naumann, J, Naumann, T, Nellen, G, Newman, PR, Nicholls, TC, Niebergall, F, Niebuhr, C, Nix, O, Nowak, G, Nunnemann, T, Olsson, JE, Ozerov, D, Panassik, V, Pascaud, C, Patel, GD, Perez, E, Phillips, JP, Pitzl, D, Poschl, R, Potachnikova, I, Povh, B, Rabbertz, K, Radel, G, Rauschenberger, J, Reimer, P, Reisert, B, Reyna, D, Riess, S, Risler, C, Rizvi, E, Robmann, P, Roosen, R, Rostovtsev, A, Royon, C, Rusakov, S, Rybicki, K, Sankey, DPC, Scheins, J, Schilling, FP, Schleper, P, Schmidt, D, Schmitt, S, Schoeffel, L, Schoning, A, Schorner, T, Schroder, V, Schultz-Coulon, HC, Schwanenberger, C, Sedlak, K, Sefkow, F, Shekelyan, V, Sheviakov, I, Shtarkov, LN, Sievers, P, Sirois, Y, Sloan, T, Smirnov, P, Solochenko, V, Soloviev, Y, Spaskov, V, Specka, A, Spitzer, H, Stamen, R, Steinhart, J, Stella, B, Stellberger, A, Stiewe, J, Straumann, U, Struczinski, W, Swart, M, Tasevsky, M, Tchernyshov, V, Tchetchelnitski, S, Thompson, G, Thompson, PD, Tobien, N, Traynor, D, Truol, P, Tsipolitis, G, Tsurin, I, Turnau, J, Turney, JE, Tzamariudaki, E, Udluft, S, Usik, A, Valkar, S, Valkarova, A, Vallee, C, Van Mechelen, P, Vassiliev, S, Vazdik, Y, Vichnevski, A, Wacker, K, Wallny, R, Walter, T, Waugh, B, Weber, G, Weber, M, Wegener, D, Werner, M, White, G, Wiesand, S, Wilksen, T, Winde, M, Winter, GG, Wissing, C, Wobisch, M, Wollatz, H, Wunsch, E, Wyatt, AC, Zacek, J, Zalesak, J, Zhang, Z, Zhokin, A, Zomer, F, Zsembery, J, zur Nedden, M, Collaboration, H, and H1 Collaboration
Subjects: Physics, Particle physics, Range (particle radiation), Luminosity (scattering theory), Physics and Astronomy (miscellaneous), Neutral current, Proton, FOS: Physical sciences, HERA, Electron, Standard Model, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), High Energy Physics::Experiment, Engineering (miscellaneous), Charged current
Abstract: The inclusive e^-p single and double differential cross sections for neutral and charged current processes are measured with the H1 detector at HERA, in the range of four-momentum transfer squared Q^2 between 150 and 30000 GeV^2, and Bjorken x between 0.002 and 0.65. The data were taken in 1998 and 1999 with a centre-of-mass energy of 320 GeV and correspond to an integrated luminosity of 16.4 pb^(-1). The data are compared with recent measurements of the inclusive neutral and charged current e^+p cross sections. For Q^2>1000 GeV^2 clear evidence is observed for an asymmetry between e^+p and e^-p neutral current scattering and the generalised structure function xF_3 is extracted for the first time at HERA. A fit to the charged current data is used to extract a value for the W boson propagator mass. The data are found to be in good agreement with Standard Model predictions., 39 pages, 10 figures, 10 tables
Published: 2000

47. A search for excited fermions at HERA

Author: Adloff, C, Andreev, V, Andrieu, B, Arkadov, V, Astvatsatourov, A, Ayyaz, I, Babaev, A, Bahr, J, Baranov, P, Barrelet, E, Bartel, W, Bassler, U, Bate, P, Beglarian, A, Behnke, O, Beier, C, Belousov, A, Benisch, T, Berger, C, Bernardi, G, Berndt, T, Bizot, JC, Borras, K, Boudry, V, Braunschweig, W, Brisson, V, Broker, HB, Brown, DP, Bruckner, W, Bruel, P, Bruncko, D, Burger, J, Busser, FW, Bunyatyan, A, Burkhardt, H, Burrage, A, Buschhorn, G, Campbell, AJ, Cao, J, Carli, T, Caron, S, Chabert, E, Clarke, D, Clerbaux, B, Collard, C, Contreras, JG, Coughlan, JA, Cousinou, MC, Cox, BE, Cozzika, G, Cvach, J, Dainton, JB, Dau, WD, Daum, K, Davidsson, M, Delcourt, B, Delerue, N, Demirchyan, R, De Roeck, A, De Wolf, EA, Diaconu, C, Dixon, P, Dodonov, V, Dowell, JD, Droutskoi, A, Duprel, C, Eckerlin, G, Eckstein, D, Efremenko, V, Egli, S, Eichler, R, Eisele, F, Eisenhandler, E, Ellerbrock, M, Elsen, E, Erdmann, M, Erdmann, W, Faulkner, PJW, Favart, L, Fedotov, A, Felst, R, Ferencei, J, Ferron, S, Fleischer, M, Flugge, G, Fomenko, A, Foresti, I, Formanek, J, Foster, JM, Franke, G, Gabathuler, E, Gabathuler, K, Garvey, J, Gassner, J, Gayler, J, Gerhards, R, Ghazaryan, S, Goerlich, L, Gogitidze, N, Goldberg, M, Goodwin, C, Grab, C, Grassler, H, Greenshaw, T, Grindhammer, G, Hadig, T, Haidt, D, Hajduk, L, Haynes, WJ, Heinemann, B, Heinzelmann, G, Henderson, RCW, Hengstmann, S, Henschel, H, Heremans, R, Herrera, G, Herynek, I, Hilgers, M, Hiller, KH, Hladky, J, Hoting, P, Hoffmann, D, Hoprich, W, Horisberger, R, Hurling, S, Ibbotson, M, Issever, C, Jacquet, M, Jaffre, M, Janauschek, L, Jansen, DM, Janssen, X, Jemanov, V, Jonsson, L, Johnson, DP, Jones, MAS, Jung, H, Kastli, HK, Kant, D, Kapichine, M, Karlsson, M, Karschnick, O, Kaufmann, O, Kausch, M, Keil, F, Keller, N, Kennedy, J, Kenyon, IR, Kermiche, S, Kiesling, C, Klein, M, Kleinwort, C, Knies, G, Koblitz, B, Kolya, SD, Korbel, V, Kostka, P, Kotelnikov, SK, Krasny, MW, Krehbiel, H, Kroseberg, J, Kruger, K, Kupper, A, Kuhr, T, Kurca, T, Kutuev, R, Lachnit, W, Lahmann, R, Lamb, D, Landon, MPJ, Lange, W, Lastovicka, T, Lebailly, E, Lebedev, A, Leissner, B, Lemrani, R, Lendermann, V, Levonian, S, Lindstroem, M, Lobodzinska, E, Lobodzinski, B, Loktionova, N, Lubimov, V, Luders, S, Luke, D, Lytkin, L, Magnussen, N, Mahlke-Kruger, H, Malden, N, Malinovski, E, Malinovski, I, Maracek, R, Marage, P, Marks, J, Marshall, R, Martyn, HU, Martyniak, J, Maxfield, SJ, Mehta, A, Meier, K, Merkel, P, Metlica, F, Meyer, H, Meyer, J, Meyer, PO, Mikocki, S, Milstead, D, Mkrtchyan, T, Mohr, R, Mohrdieck, S, Mondragon, MN, Moreau, F, Morozov, A, Morris, JV, Muller, K, Murin, P, Nagovizin, V, Naroska, B, Naumann, J, Naumann, T, Negri, I, Nellen, G, Newman, PR, Nicholls, TC, Niebergall, F, Niebuhr, C, Nix, O, Nowak, G, Nunnemann, T, Olsson, JE, Ozerov, D, Panassik, V, Pascaud, C, Patel, GD, Perez, E, Phillips, JP, Pitzl, D, Poschl, R, Potachnikova, I, Povh, B, Rabbertz, K, Radel, G, Rauschenberger, J, Reimer, P, Reisert, B, Reyna, D, Riess, S, Rizvi, E, Robmann, P, Roosen, R, Rostovtsev, A, Royon, C, Rusakov, S, Rybicki, K, Sankey, DPC, Scheins, J, Schilling, FP, Schleper, P, Schmidt, D, Schmitt, S, Schoeffel, L, Schoning, A, Schorner, T, Schroder, V, Schultz-Coulon, HC, Sedlak, K, Sefkow, F, Shekelyan, V, Sheviakov, I, Shtarkov, LN, Siegmon, G, Sievers, P, Sirois, Y, Sloan, T, Smirnov, P, Solochenko, V, Soloviev, Y, Spaskov, V, Specka, A, Spitzer, H, Stamen, R, Steinhart, J, Stella, B, Stellberger, A, Stiewe, J, Straumann, U, Struczinski, W, Swart, M, Tasevsky, M, Tchernyshov, V, Tchetchelnitski, S, Thompson, G, Thompson, PD, Tobien, N, Traynor, D, Truol, P, Tsipolitis, G, Turnau, J, Turney, JE, Tzamariudaki, E, Udluft, S, Usik, A, Valkar, S, Valkarova, A, Vallee, C, Van Mechelen, P, Vazdik, Y, von Dombrowski, S, Wacker, K, Wallny, R, Walter, T, Waugh, B, Weber, G, Weber, M, Wegener, D, Wegner, A, Wengler, T, Werner, M, White, G, Wiesand, S, Wilksen, T, Winde, M, Winter, GG, Wissing, C, Wobisch, M, Wollatz, H, Wunsch, E, Wyatt, AC, Zacek, J, Zalesak, J, Zhang, Z, Zhokin, A, Zomer, F, Zsembery, J, zur Nedden, M, Collaboration, H, Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), H1, H1 Collaboration, Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), and Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Physics, Coupling constant, Particle physics, Physics and Astronomy (miscellaneous), 010308 nuclear & particles physics, Hadron, Electroweak interaction, FOS: Physical sciences, Fermion, HERA, 01 natural sciences, 7. Clean energy, High Energy Physics - Experiment, law.invention, High Energy Physics - Experiment (hep-ex), law, Excited state, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, 010306 general physics, Collider, Engineering (miscellaneous), Lepton
Abstract: A search for excited fermions f^* of the first generation in e^+p scattering at the collider HERA is presented using H1 data with an integrated luminosity of 37 pb^(-1). All electroweak decays of excited fermions, f^* -> f gamma, f W, f Z are considered and all possible final states resulting from the Z or W hadronic decays or decays into leptons of the first two generations are taken into account. No evidence for f^* production is found. Mass dependent exclusion limits on cross-sections and on the ratio of coupling constants to the compositeness scale are derived., 27 pages, 12 figures, 5 tables
Published: 2000

48. Measurement and QCD Analysis of Jet Cross Sections in Deep-Inelastic Positron-Proton Collisions at sqrt(s) of 300 GeV

Author: Adloff, C, Andreev, V, Andrieu, B, Anthonis, T, Arkadov, V, Astvatsatourov, A, Ayyaz, I, Babaev, A, Bahr, J, Baranov, P, Barrelet, E, Bartel, W, Bassler, U, Bate, P, Beglarian, A, Behnke, O, Beier, C, Belousov, A, Benisch, T, Berger, C, Bernardi, G, Berndt, T, Bizot, JC, Boudry, V, Braunschweig, W, Brisson, V, Broker, HB, Brown, DP, Bruckner, W, Bruel, P, Bruncko, D, Burger, J, Busser, FW, Bunyatyan, A, Burkhardt, H, Burrage, A, Buschhorn, G, Campbell, AJ, Cao, J, Carli, T, Caron, S, Chabert, E, Clarke, D, Clerbaux, B, Collard, C, Contreras, JG, Coppens, YR, Coughlan, JA, Cousinou, MC, Cox, BE, Cozzika, G, Cvach, J, Dainton, JB, Dau, WD, Daum, K, Davidsson, M, Delcourt, B, Delerue, N, Demirchyan, R, De Roeck, A, De Wolf, EA, Diaconu, C, Dixon, P, Dodonov, V, Dowell, JD, Droutskoi, A, Duprel, C, Eckerlin, G, Eckstein, D, Efremenko, V, Egli, S, Eichler, R, Eisele, F, Eisenhandler, E, Ellerbrock, M, Elsen, E, Erdmann, M, Erdmann, W, Faulkner, PJW, Favart, L, Fedotov, A, Felst, R, Ferencei, J, Ferron, S, Fleischer, M, Fleming, YH, Flugge, G, Fomenko, A, Foresti, I, Formanek, J, Foster, JM, Franke, G, Gabathuler, E, Gabathuler, K, Garvey, J, Gassner, J, Gayler, J, Gerhards, R, Ghazaryan, S, Goerlich, L, Gogitidze, N, Goldberg, M, Goodwin, C, Grab, C, Grassler, H, Greenshaw, T, Grindhammer, G, Hadig, T, Haidt, D, Hajduk, L, Haynes, WJ, Heinemann, B, Heinzelmann, G, Henderson, RCW, Hengstmann, S, Henschel, H, Heremans, R, Herrera, G, Herynek, I, Hildebrandt, M, Hilgers, M, Hiller, KH, Hladky, J, Hoting, P, Hoffmann, D, Hoprich, W, Horisberger, R, Hurling, S, Ibbotson, M, Issever, C, Jacquet, M, Jaffre, M, Janauschek, L, Jansen, DM, Janssen, X, Jemanov, V, Jonsson, L, Johnson, DP, Jones, MAS, Jung, H, Kastli, HK, Kant, D, Kapichine, M, Karlsson, M, Karschnick, O, Keil, F, Keller, N, Kennedy, J, Kenyon, IR, Kermiche, S, Kiesling, C, Klein, M, Kleinwort, C, Knies, G, Koblitz, B, Kolya, SD, Korbel, V, Kostka, P, Kotelnikov, SK, Koutouev, R, Koutov, A, Krasny, MW, Krehbiel, H, Kroseberg, J, Kruger, K, Kupper, A, Kuhr, T, Kurca, T, Lahmann, R, Lamb, D, Landon, MPJ, Lange, W, Lastovicka, T, Lebailly, E, Lebedev, A, Leissner, B, Lemrani, R, Lendermann, V, Levonian, S, Lindstroem, M, List, B, Lobodzinska, E, Lobodzinski, B, Loginov, A, Loktionova, N, Lubimov, V, Luders, S, Luke, D, Lytkin, L, Magnussen, N, Mahlke-Kruger, H, Malden, N, Malinovski, E, Malinovski, I, Maracek, R, Marage, P, Marks, J, Marshall, R, Martyn, HU, Martyniak, J, Maxfield, SJ, Mehta, A, Meier, K, Merkel, P, Metlica, F, Meyer, AB, Meyer, H, Meyer, J, Meyer, PO, Mikocki, S, Milstead, D, Mkrtchyan, T, Mohr, R, Mohrdieck, S, Mondragon, MN, Moreau, F, Morozov, A, Morris, JV, Muller, K, Murin, P, Nagovizin, V, Naroska, B, Naumann, J, Naumann, T, Nellen, G, Newman, PR, Nicholls, TC, Niebergall, F, Niebuhr, C, Nix, O, Nowak, G, Nunnemann, T, Olsson, JE, Ozerov, D, Panassik, V, Pascaud, C, Patel, GD, Perez, E, Phillips, JP, Pitzl, D, Poschl, R, Potachnikova, I, Povh, B, Rabbertz, K, Radel, G, Rauschenberger, J, Reimer, P, Reisert, B, Reyna, D, Riess, S, Risler, C, Rizvi, E, Robmann, P, Roosen, R, Rostovtsev, A, Royon, C, Rusakov, S, Rybicki, K, Sankey, DPC, Scheins, J, Schilling, FP, Schleper, P, Schmidt, D, Schmitt, S, Schoeffel, L, Schoning, A, Schorner, T, Schroder, V, Schultz-Coulon, HC, Schwanenberger, C, Sedlak, K, Sefkow, F, Shekelyan, V, Sheviakov, I, Shtarkov, LN, Siegmon, G, Sievers, P, Sirois, Y, Sloan, T, Smirnov, P, Solochenko, V, Soloviev, Y, Spaskov, V, Specka, A, Spitzer, H, Stamen, R, Steinhart, J, Stella, B, Stellberger, A, Stiewe, J, Straumann, U, Struczinski, W, Swart, M, Tasevsky, M, Tchernyshov, V, Tchetchelnitski, S, Thompson, G, Thompson, PD, Tobien, N, Traynor, D, Truol, P, Tsipolitis, G, Tsurin, I, Turnau, J, Turney, JE, Tzamariudaki, E, Udluft, S, Usik, A, Valkar, S, Valkarova, A, Vallee, C, Van Mechelen, P, Vassiliev, S, Vazdik, Y, Vichnevski, A, von Dombrowski, S, Wacker, K, Wallny, R, Walter, T, Waugh, B, Weber, G, Weber, M, Wegener, D, Werner, M, White, G, Wiesand, S, Wilksen, T, Winde, M, Winter, GG, Wissing, C, Wobisch, M, Wollatz, H, Wunsch, E, Wyatt, AC, Zacek, J, Zalesak, J, Zhang, Z, Zhokin, A, Zomer, F, Zsembery, J, zur Nedden, M, Collaboration, H, H1 Collaboration, Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), H1, Damoiseaux, Magali, Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), and Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Quantum chromodynamics, Physics, Particle physics, Luminosity (scattering theory), Physics and Astronomy (miscellaneous), Proton, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], 010308 nuclear & particles physics, Perturbative QCD, FOS: Physical sciences, HERA, Jet (particle physics), 01 natural sciences, 7. Clean energy, Gluon, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), Positron, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, 010306 general physics, Nuclear Experiment, Engineering (miscellaneous)
Abstract: Jet production is studied in the Breit frame in deep-inelastic positron-proton scattering over a large range of four-momentum transfers 5 < Q^2 < 15000 GeV^2 and transverse jet energies 7 < E_T < 60 GeV. The analysis is based on data corresponding to an integrated luminosity of L_int \simeq 33 pb^(-1) taken in the years 1995-1997 with the H1 detector at HERA at a center-of-mass energy sqrt(s)=300 GeV. Dijet and inclusive jet cross sections are measured multi-differentially using k_perp and angular ordered jet algorithms. The results are compared to the predictions of perturbative QCD calculations in next-to-leading order in the strong coupling constant alphas.QCD fits are performed in which alphas and the gluon density in the proton are determined separately. The gluon density is found to be in good agreement with results obtained in other analyses using data from different processes. The strong coupling constant is determined to be alphas(MZ)=0.1186+-0.0059. In addition an analysis of the data in which both alphas and the gluon density are determined simultaneously is presented., 44 pages, 19 figures, 5 tables
Published: 2000

49. Measurement of elastic electroproduction of phi mesons at HERA

Author: Adloff, C, Andreev, V, Andrieu, B, Arkadov, V, Astvatsatourov, A, Ayyaz, I, Babaev, A, Bahr, J, Baranov, P, Barrelet, E, Bartel, W, Bassler, U, Bate, P, Beglarian, A, Behnke, O, Beier, C, Belousov, A, Benisch, T, Berger, C, Bernardi, G, Berndt, T, Bizot, JC, Borras, K, Boudry, V, Braunschweig, W, Brisson, V, Broker, HB, Brown, DP, Bruckner, W, Bruel, P, Bruncko, D, Burger, J, Busser, FW, Bunyatyan, A, Burkhardt, H, Burrage, A, Buschhorn, G, Campbell, AJ, Cao, J, Carli, T, Caron, S, Chabert, E, Clarke, D, Clerbaux, B, Collard, C, Contreras, JG, Coughlan, JA, Cousinou, MC, Cox, BE, Cozzika, G, Cvach, J, Dainton, JB, Dau, WD, Daum, K, David, M, Davidsson, M, Delcourt, B, Delerue, N, Demirchyan, R, De Roeck, A, De Wolf, EA, Diaconu, C, Dixon, P, Dodonov, V, Dowell, JD, Droutskoi, A, Duprel, C, Eckerlin, G, Eckstein, D, Efremenko, V, Egli, S, Eichler, R, Eisele, F, Eisenhandler, E, Ellerbrock, M, Elsen, E, Erdmann, M, Erdmann, W, Faulkner, PJW, Favart, L, Fedotov, A, Felst, R, Ferencei, J, Ferron, S, Fleischer, M, Flugge, G, Fomenko, A, Foresti, I, Formanek, J, Foster, JM, Franke, G, Gabathuler, E, Gabathuler, K, Garvey, J, Gassner, J, Gayler, J, Gerhards, R, Ghazaryan, S, Goerlich, L, Gogitidze, N, Goldberg, M, Goodwin, C, Grab, C, Grassler, H, Greenshaw, T, Grindhammer, G, Hadig, T, Haidt, D, Hajduk, L, Haynes, WJ, Heinemann, B, Heinzelmann, G, Henderson, RCW, Hengstmann, S, Henschel, H, Heremans, R, Herrera, G, Herynek, I, Hilgers, M, Hiller, KH, Hladky, J, Hoting, P, Hoffmann, D, Hoprich, W, Horisberger, R, Hurling, S, Ibbotson, M, Issever, C, Jacquet, M, Jaffre, M, Janauschek, L, Jansen, DM, Janssen, X, Jemanov, V, Jonsson, L, Johnson, DP, Jones, MAS, Jung, H, Kastli, HK, Kant, D, Kapichine, M, Karlsson, M, Karschnick, O, Kaufmann, O, Kausch, M, Keil, F, Keller, N, Kennedy, J, Kenyon, IR, Kermiche, S, Kiesling, C, Klein, M, Kleinwort, C, Knies, G, Koblitz, B, Kolya, SD, Korbel, V, Kostka, P, Kotelnikov, SK, Krasny, MW, Krehbiel, H, Kroseberg, J, Krucker, D, Kruger, K, Kupper, A, Kuhr, T, Kurca, T, Kutuev, R, Lachnit, W, Lahmann, R, Lamb, D, Landon, MPJ, Lange, W, Lastovicka, T, Lebedev, A, Leissner, B, Lemrani, R, Lendermann, V, Levonian, S, Lindstroem, M, Lobodzinska, E, Lobodzinski, B, Loktionova, N, Lubimov, V, Luders, S, Luke, D, Lytkin, L, Magnussen, N, Mahlke-Kruger, H, Malden, N, Malinovski, E, Malinovski, I, Maracek, R, Marage, P, Marks, J, Marshall, R, Martyn, HU, Martyniak, J, Maxfield, SJ, Mehta, A, Meier, K, Merkel, P, Metlica, F, Meyer, H, Meyer, J, Meyer, PO, Mikocki, S, Milstead, D, Mkrtchyan, T, Mohr, R, Mohrdieck, S, Mondragon, MN, Moreau, F, Morozov, A, Morris, JV, Muller, K, Murin, P, Nagovizin, V, Naroska, B, Naumann, J, Naumann, T, Nellen, G, Newman, PR, Nicholls, TC, Niebergall, F, Niebuhr, C, Nix, O, Nowak, G, Nunnemann, T, Olsson, JE, Ozerov, D, Panassik, V, Pascaud, C, Patel, GD, Perez, E, Phillips, JP, Pitzl, D, Poschl, R, Potachnikova, I, Povh, B, Rabbertz, K, Radel, G, Rauschenberger, J, Reimer, P, Reisert, B, Reyna, D, Riess, S, Rizvi, E, Robmann, P, Roosen, R, Rostovtsev, A, Royon, C, Rusakov, S, Rybicki, K, Sankey, DPC, Scheins, J, Schilling, FP, Schleper, P, Schmidt, D, Schoeffel, L, Schoning, A, Schorner, T, Schroder, V, Schultz-Coulon, HC, Sedlak, K, Sefkow, F, Shekelyan, V, Sheviakov, I, Shtarkov, LN, Siegmon, G, Sievers, P, Sirois, Y, Sloan, T, Smirnov, P, Solochenko, V, Soloviev, Y, Spaskov, V, Specka, A, Spitzer, H, Stamen, R, Steinhart, J, Stella, B, Stellberger, A, Stiewe, J, Straumann, U, Struczinski, W, Swart, M, Tasevsky, M, Tchernyshov, V, Tchetchelnitski, S, Thompson, G, Thompson, PD, Tobien, N, Traynor, D, Truol, P, Tsipolitis, G, Turnau, J, Turney, JE, Tzamariudaki, E, Udluft, S, Usik, A, Valkar, S, Valkarova, A, Vallee, C, Van Mechelen, P, Vazdik, Y, von Dombrowski, S, Wacker, K, Wallny, R, Walter, T, Waugh, B, Weber, G, Weber, M, Wegener, D, Wegner, A, Wengler, T, Warner, M, White, G, Wiesand, S, Wilksen, T, Winde, M, Winter, GG, Wissing, C, Wobisch, M, Wollatz, H, Wunsch, E, Wyatt, AC, Zacek, J, Zalesak, J, Zhang, Z, Zhokin, A, Zomer, F, Zsembery, J, zur Nedden, M, Collaboration, H, Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), H1, H1 Collaboration, Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), and Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)
Subjects: Physics, Quark, Nuclear and High Energy Physics, Particle physics, Proton, Meson, 010308 nuclear & particles physics, Hadron, Nuclear Theory, High Energy Physics::Phenomenology, FOS: Physical sciences, HERA, Phi meson, 01 natural sciences, 7. Clean energy, Helicity, Omega, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, 010306 general physics, Nuclear Experiment
Abstract: The elastic electroproduction of phi mesons is studied at HERA with the H1 detector for photon virtualities 1 < Q^2 < 15 GeV^2 and hadronic centre of mass energies 40 < W < 130 GeV. The Q^2 and t dependences of the cross section are extracted (t being the square of the four-momentum transfer to the target proton). When plotted as function of (Q^2 + M_V^2) and scaled by the appropriate SU(5) quark charge factor, the phi meson cross section agrees within errors with the cross sections of the vector mesons V = rho, omega and J/psi. A detailed analysis is performed of the phi meson polarisation state and the ratio of the production cross sections for longitudinally and transversely polarised phi mesons is determined. A small but significant violation of s-channel helicity conservation (SCHC) is observed., 17 pages, 7 figures and 2 tables
Published: 2000

50. Measurement of Di-jet Cross-Sections in Photoproduction and Photon Structure

Author: Adloff, C, Andreev, V, Andrieu, B, Arkadov, V, Astvatsatourov, A, Ayyaz, I, Babaev, A, Bahr, J, Baranov, P, Barrelet, E, Bartel, W, Bassler, U, Bate, P, Beglarian, A, Behnke, O, Beier, C, Belousov, A, Benisch, T, Berger, C, Bernardi, G, Berndt, T, Bertrand-Coremans, G, Bizot, JC, Borras, K, Boudry, V, Braunschweig, W, Brisson, V, Broker, HB, Brown, DP, Bruckner, W, Bruel, P, Bruncko, D, Burger, J, Busser, FW, Bunyatyan, A, Burke, S, Burkhardt, H, Burrage, A, Buschhorn, G, Campbell, AJ, Cao, J, Carli, T, Caron, S, Chabert, E, Clarke, D, Clerbaux, B, Collard, C, Contreras, JG, Coughlan, JA, Cousinou, MC, Cox, BE, Cozzika, G, Cvach, J, Dainton, JB, Dau, WD, Daum, K, David, M, Davidsson, M, Delcourt, B, Delerue, N, Demirchyan, R, De Roeck, A, De Wolf, EA, Diaconu, C, Dixon, P, Dodonov, V, Donovan, KT, Dowell, JD, Droutskoi, A, Duprel, C, Ebert, J, Eckerlin, G, Eckstein, D, Efremenko, V, Egli, S, Eichler, R, Eisele, F, Eisenhandler, E, Ellerbrock, M, Elsen, E, Erdmann, M, Faulkner, PJW, Favart, L, Fedotov, A, Felst, R, Feltesse, J, Ferencei, J, Ferrarotto, F, Ferron, S, Fleischer, M, Flugge, G, Fomenko, A, Foresti, I, Formanek, J, Foster, JM, Franke, G, Gabathuler, E, Gabathuler, K, Garvey, J, Gassner, J, Gayler, J, Gerhards, R, Ghazaryan, S, Glazov, A, Goerlich, L, Gogitidze, N, Goldberg, M, Goodwin, C, Gorelov, I, Grab, C, Grassler, H, Greenshaw, T, Griffiths, RK, Grindhammer, G, Hadig, T, Haidt, D, Hajduk, L, Haustein, V, Haynes, WJ, Heinemann, B, Heinzelmann, G, Henderson, RCW, Hengstmann, S, Henschel, H, Heremans, R, Herrera, G, Herynek, I, Hilgers, M, Hiller, KH, Hilton, CD, Hladky, J, Hoting, P, Hoffmann, D, Hoprich, W, Horisberger, R, Hurling, S, Ibbotson, M, Issever, C, Jacquet, M, Jaffre, M, Janauschek, L, Jansen, DM, Janssen, X, Jemanov, V, Jonsson, L, Johnson, DP, Jones, MAS, Jung, H, Kastli, HK, Kant, D, Kapichine, M, Karlsson, M, Karschnick, O, Kaufmann, O, Kausch, M, Keil, F, Keller, N, Kennedy, J, Kenyon, IR, Kermiche, S, Kiesling, C, Klein, M, Kleinwort, C, Knies, G, Koblitz, B, Kolanoski, H, Kolya, SD, Korbel, V, Kostka, P, Kotelnikov, SK, Krasny, MW, Krehbiel, H, Kroseberg, J, Krucker, D, Kruger, K, Kupper, A, Kuhr, T, Kurca, T, Kutuev, R, Lachnit, W, Lahmann, R, Lamb, D, Landon, MPJ, Lange, W, Lastovicka, T, Lebedev, A, Leissner, B, Lemaitre, V, Lemrani, R, Lendermann, V, Levonian, S, Lindstroem, M, Lobo, G, Lobodzinska, E, Lobodzinski, B, Loktionova, N, Lubimov, V, Luders, S, Luke, D, Lytkin, L, Magnussen, N, Mahlke-Kruger, H, Malden, N, Malinovski, E, Malinovski, I, Maracek, R, Marage, P, Marks, J, Marshall, R, Martyn, HU, Martyniak, J, Maxfield, SJ, McMahon, TR, Mehta, A, Meier, K, Merkel, P, Metlica, F, Meyer, A, Meyer, H, Meyer, J, Meyer, PO, Mikocki, S, Milstead, D, Mkrtchyan, T, Mohr, R, Mohrdieck, S, Mondragon, MN, Moreau, F, Morozov, A, Morris, JV, Muller, D, Muller, K, Murin, P, Nagovizin, V, Naroska, B, Naumann, J, Naumann, T, Negri, I, Newman, PR, Nguyen, HK, Nicholls, TC, Niebergall, F, Niebuhr, C, Nix, O, Nowak, G, Nunnemann, T, Olsson, JE, Ozerov, D, Panassik, V, Pascaud, C, Passaggio, S, Patel, GD, Perez, E, Phillips, JP, Pitzl, D, Poschl, R, Potachnikova, I, Povh, B, Rabbertz, K, Radel, G, Rauschenberger, J, Reimer, P, Reisert, B, Reyna, D, Riess, S, Rizvi, E, Robmann, P, Roosen, R, Rostovtsev, A, Royon, C, Rusakov, S, Rybicki, K, Sankey, DPC, Scheins, J, Schilling, FP, Schleif, S, Schleper, P, Schmidt, D, Schoeffel, L, Schoning, A, Schorner, T, Schroder, V, Schultz-Coulon, HC, Sedlak, K, Sefkow, F, Shekelyan, V, Sheviakov, I, Shtarkov, LN, Siegmon, G, Sievers, P, Sirois, Y, Sloan, T, Smirnov, P, Smith, M, Solochenko, V, Soloviev, Y, Spaskov, V, Specka, A, Spitzer, H, Stamen, R, Steinhart, J, Stella, B, Stellberger, A, Stiewe, J, Straumann, U, Struczinski, W, Sutton, JP, Swart, M, Tasevsky, M, Tchernyshov, V, Tchetchelnitski, S, Thompson, G, Thompson, PD, Tobien, N, Traynor, D, Truol, P, Tsipolitis, G, Turnau, J, Turney, JE, Tzamariudaki, E, Udluft, S, Usik, A, Valkar, S, Valkarova, A, Vallee, C, Van Mechelen, P, Vazdik, Y, Villet, G, von Dombrowski, S, Wacker, K, Wallny, R, Walter, T, Waugh, B, Weber, G, Weber, M, Wegener, D, Wegner, A, Wengler, T, Werner, M, West, LR, White, G, Wiesand, S, Wilksen, T, Winde, M, Winter, GG, Wissing, C, Wobisch, M, Wollatz, H, Wunsch, E, Zacek, J, Zalesak, J, Zhang, Z, Zhokin, A, Zini, P, Zomer, F, Zsembery, J, zur Nedden, M, Collaboration, H, Girod, Dominique, H1 Collaboration, Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), and H1
Subjects: Quantum chromodynamics, Physics, Nuclear and High Energy Physics, Particle physics, Photon, Luminosity (scattering theory), Proton, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, High Energy Physics::Phenomenology, FOS: Physical sciences, Parton, HERA, Jet (particle physics), 01 natural sciences, High Energy Physics - Experiment, Gluon, High Energy Physics - Experiment (hep-ex), [PHYS.PHYS.PHYS-INS-DET] Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], 0103 physical sciences, High Energy Physics::Experiment, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], 010306 general physics, Nuclear Experiment
Abstract: The production of hard di-jet events in photoproduction at HERA is dominated by resolved photon processes in which a parton in the photon with momentum fraction x_gamma is scattered from a parton in the proton. These processes are sensitive to the quark and gluon content of the photon. The differential di-jet cross-section dsigma/dlog(x_gamma) is presented here, measured in tagged photoproduction at HERA using data taken with the H1 detector, corresponding to an integrated luminosity of 7.2 pb^(-1). Using a restricted data sample at high transverse jet energy, E_(T,jet)>6 GeV, the effective parton density f_gamma,eff(x_gamma) = [q(x_gamma) + bar(q)(x_gamma) +9/4g(x_gamma)] in the photon in leading order QCD is measured down to x_gamma=0.05 from which the gluon density in the photon is derived., 19 pages, 5 figures and 2 tables
Published: 2000

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