Author: "Stamm J" / Topic: physics - Searchworks@Jio Institute Digital Library Search Results

Your search keyword '"Stamm J"' showing total 27 results

Start Over Author "Stamm J" Topic physics

27 results on '"Stamm J"'

1. INCLUSIVE TRANSVERSE-MOMENTUM DISTRIBUTIONS OF CHARGED-PARTICLES IN DIFFRACTIVE AND NON-DIFFRACTIVE PHOTOPRODUCTION AT HERA

Author: Derrick, M., Krakauer, D., Magill, S., Mikunas, D., Musgrave, B., Repond, J., Stanek, R., Talaga, Rl, Zhang, H., Ayad, R., Bari, G., Basile, M., Bellagamba, L., Boscherini, D., Bruni, A., Bruni, G., Bruni, P., Romeo, Gc, Castellini, G., Chiarini, M., Cifarelli, L., Cindolo, F., Contin, M., Gialas, I., Giusti, P., Iacobucci, G., Laurenti, G., Levi, G., Margotti, A., Massam, T., Nania, R., Nemoz, C., Palmonari, F., Polini, A., Sartorelli, G., Timellini, R., Garcia, Yz, Zichichi, A., Bargende, A., Crittenden, J., Desch, K., Dickmann, B., Doeker, T., Eckert, M., Feld, L., Frey, A., Geerts, M., Geitz, G., Grothe, M., Haas, T., Hartmann, H., Hann, D., Heinloth, K., Hilger, E., Jakob, Hp, Katz, Uf, Mari, Sm, Mass, A., Mengel, S., Mollen, J., Paul, E., Rembser, C., Schattevoy, R., Schramm, D., Stamm, J., Wedemeyer, R., Campbellrobson, S., Cassidy, A., Dyce, N., Foster, B., George, S., Gilmore, R., Heath, Gp, Heath, Hf, Llewellyn, Tj, Morgado, Cjs, Norman, Djp, Omara, Ja, Tapper, Rj, Wilson, Ss, Yoshida, R., Rau, Rr, Arneodo, M., Iannotti, L., Schioppa, M., Susinno, G., Bernstein, A., Caldwell, A., Cartiglia, N., Parsons, Ja, Ritz, S., Sciulli, F., Straub, Pb, Wai, L., Yang, S., Zhu, Q., Borzemski, P., Chwastowski, J., Eskreys, A., Piotrzkowski, K., Zachara, M., Leszek Zawiejski, Adamczyk, L., Bednarek, B., Jelen, K., Kisielewska, D., Kowalski, T., Rulikowskazarebska, E., Suszycki, L., Zajac, J., Kotanski, A., Przybycien, M., Bauerdick, Lat, Behrens, U., Beier, H., Bienlein, Jk, Coldewey, C., Deppe, O., Desler, K., Drews, G., Glasinski, M., Gilkinson, Dj, Glasman, C., Gottlicher, P., Grosseknetter, J., Gutjahr, B., Hain, W., Hasell, D., Hessling, H., Iga, Y., Joos, P., Kasemann, M., Klanner, R., Koch, W., Kopke, W., Kopke, L., Kotz, U., Kowalski, H., Labs, J., Ladage, A., Lohr, B., Lowe, M., Luke, D., Manczak, O., Monteiro, T., Ng, Jst, Nickel, S., Notz, D., Ohrenberg, K., Roco, M., Rohde, M., Roldan, J., Schneekloth, U., Schulz, W., Selonke, F., Stiliaris, E., Surrow, B., Voss, T., Westphal, D., Wolf, G., Youngman, C., Zhou, Jf, Grabosch, Hj, Kharchilava, A., Leich, A., Mattingly, Mck, Meyer, A., Schlenstedt, S., Wulff, N., Barbagli, G., Pelfer, P., Anzivino, G., Maccarrone, G., Depasquale, S., Votano, L., Bamberger, A., Eisenhardt, S., Freidhof, A., Soldnerrembold, S., Schroeder, J., Trefzger, T., Brook, Nh, Bussey, Pj, Doyle, At, Fleck, Jj, Saxon, Dh, Utley, Ml, Wilson, As, Dannemann, A., Holm, U., Horstmann, D., Neumann, T., Sinkus, R., Wick, K., Badura, E., Burow, Bd, Hagge, L., Lohrmann, E., Mainusch, J., Milewski, J., Nakahata, M., Pavel, N., Poelz, G., Schott, W., Zetsche, F., Bacon, Tc, Butterworth, I., Gallo, E., Harris, Vi, Hung, Byh, Long, Kr, Miller, Db, Morawitz, Ppo, Prinias, A., Sedgbeer, Jk, Whitfield, Af, Mallik, U., Mccliment, E., Wang, Mz, Wang, Sm, Wu, Jt, Zhang, Y., Cloth, P., Filges, D., An, Sh, Hong, Sm, Nam, Sw, Park, Sk, Suh, Mh, Yon, Sh, Imlay, R., Kartik, S., Kim, Hj, Mcneil, Rr, Metclaf, W., Nadendla, Vk, Barreiro, F., Cases, G., Graciani, R., Hernandez, Jm, Hervas, L., Labarga, L., Delpeso, J., Puga, J., Terron, J., Detroconiz, Jf, Smith, Gr, Corriveau, F., Hanna, Ds, Hartmann, J., Hung, Lw, Lim, Jn, Matthews, Cg, Patel, Pm, Sinclair, Le, Stairs, Dg, Laurent, Ms, Ullmann, R., Zacek, G., Bashkirov, V., Dolgoshein, Ba, Stifutkin, A., Bashindzhagyan, Gl, Ermolov, Pf, Gladilin, Lk, Golubkov, Ya, Kobrin, Vd, Kuzmin, Va, Proskuryakov, As, Savia, Aa, Shcheglova, Lm, Solomin, An, Zotov, Np, Botje, M., Chlebana, F., Dake, A., Engelen, J., Dekamps, M., Kooijman, P., Kruse, A., Tiecke, H., Verkerke, W., Vreeswijk, M., Wiggers, L., Dewolf, E., Vanwoudenberg, R., Acosta, D., Bylsma, B., Durkin, Ls, Honscheid, K., Li, C., Ling, Ty, Mclean, Kw, Murray, Wn, Park, Lh, Romanowski, Ta, Seidlein, R., Bailey, Ds, Blair, Ga, Byrne, A., Cashmore, Rj, Coopersarkar, Am, Daniels, D., Devenish, Rce, Harnew, N., Lancaster, M., Luffman, Pe, Lindemann, L., Mcfall, Jd, Nath, C., Noyes, Va, Quadt, A., Uijterwaal, H., Walczak, R., Wilson, Ff, Yip, T., Abbiendi, G., Bertolin, A., Brugnera, R., Carlin, R., Dalcorso, F., Degiorgi, M., Dosselli, U., Limentani, S., Morandin, M., Posocco, M., Stanco, L., Stroili, R., Voci, C., Bulmahn, J., Butterworth, Jm, Feild, Rg, Oh, By, Whitmore, Jj, Dagostini, G., Marini, G., Nigro, A., Tassi, E., Hart, Jc, Mccubbin, Na, Prytz, K., Shah, Tp, Short, Tl, Barberis, E., Dubbs, T., Heusch, C., Vanhook, M., Hubbard, B., Lockman, W., Rahn, Jt, Sadrozinski, Hfw, Seiden, A., Biltzinger, J., Seifert, Rj, Schwarzer, O., Walenta, Ah, Zech, G., Abramowicz, H., Briskin, G., Dagan, S., Levy, A., Hasegawa, T., Hazumi, M., Ishii, T., Kuze, M., Mine, S., Nagasawa, Y., Nakao, M., Suzuki, I., Tokushuku, K., Yamada, S., Yamazaki, Y., Chiba, M., Hamatsu, R., Hirose, T., Homma, K., Kitamura, S., Nakamitsu, Y., Yamauchi, K., Cino, R., Costa, M., Ferrero, Mi, Lamberti, L., Maselli, S., Peroni, C., Sacchi, R., Solano, A., Staiano, A., Dardo, M., Bailey, Dc, Bandyopadhyay, D., Benard, F., Brkic, M., Crombie, Mb, Gingrich, Dm, Hartner, Gf, Joo, Kk, Levman, Gm, Martin, Jf, Orr, Rs, Sampson, Cr, Teuscher, Rj, Catterall, Cd, Jones, Tw, Kaziewicz, Pb, Lane, Jb, Saunders, Rl, Shulman, J., Blankenship, K., Lu, B., Mo, Lw, Bogusz, W., Charchula, K., Ciborowski, J., Gajewski, J., Grzelak, G., Kasprzak, M., Krzyzanowski, M., Muchorowski, K., Nowak, Rj, Pawlak, Jm, Tymieniecka, T., Wroblewski, Ak, Zakrzewski, Ja, Zarnecki, Af, Adamus, M., Eisenberg, Y., Karshon, U., Revel, D., Zerzion, D., Ali, I., Badgett, Wf, Behrens, B., Dasu, S., Fordham, C., Foudas, C., Goussiou, A., Loveless, Rj, Reeder, Dd, Silverstein, S., Smith, Wh, Vaiciulis, A., Wodarczyk, M., Tsurugai, T., Bhadra, S., Cardy, Ml, Fagerstroem, Cp, Frisken, Wr, Furutani, Km, Khakzad, M., and Schmidke, Wb
Subjects: Diffraction, Particle physics, Photon, Physics and Astronomy (miscellaneous), non-diffractive interaction, Nuclear Theory, Monte Carlo method, FOS: Physical sciences, COLLIDER ENERGIES, 7. Clean energy, 01 natural sciences, photoproduction, diffractive interactions, Spectral line, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), MONTE-CARLO, 0103 physical sciences, 010306 general physics, Nuclear Experiment, Engineering (miscellaneous), ZEUS, CENTRAL TRACKING DETECTOR, ZEUS BARREL CALORIMETER, HADRONIC PROCESSES, PHOTON, DISSOCIATION, Quantum chromodynamics, Physics, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, HERA, Charged particle, Pseudorapidity, High Energy Physics::Experiment
Abstract: Inclusive transverse momentum spectra of charged particles in photoproduction events in the laboratory pseudorapidity range $-1.2, Comment: 23 pages, latex, 4 figures appended as uuencoded file
Published: 2016
Full Text: View/download PDF

2. Observation of jet production in deep inelastic scattering with a large rapidity gap at HERA

Author: David Bailey, Derrick, M., Krakauer, D., Magill, S., Musgrave, B., Repond, J., Schlereth, J., Stanek, R., Talaga, R. L., Thron, J., Arzarello, F., Ayad, R., Bari, G., Basile, M., Bellagamba, L., Boscherini, D., Bruni, A., Bruni, G., Bruni, P., Cara Romeo, G., Castellini, G., Chiarini, M., Cifarelli, L., Cindolo, F., Ciralli, F., Contin, A., Auria, S. D., Del Papa, C., Frasconi, F., Giusti, P., Iacobucci, G., Laurenti, G., Levi, G., Maccarrone, G., Margotti, A., Massam, T., Nania, R., Nemoz, C., Palmonari, F., Sartorelli, G., Timellini, R., Zamora Garcia, Y., Zichichi, A., Bargende, A., Crittenden, J., Desch, K., Diekmann, B., Doeker, T., Feld, L., Frey, A., Geerts, M., Geitz, G., Hartmann, H., Haun, D., Heinloth, K., Hilger, E., Jakob, H. P., Katz, U. F., Kramarczyk, S., Mass, A., Mengel, S., Mollen, J., Paul, E., Ch Rembser, Schattevoy, R., Schneider, J. L., Schramm, D., Stamm, J., Wedemeyer, R., Campbell-Robson, S., Cassidy, A., Dyce, N., Foster, B., George, S., Gilmore, R., Heath, G. P., Heath, H. F., Llewellyn, T. J., Morgado, C. J. S., Norman, D. J. P., Mara, J. A. O., Tapper, R. J., Wilson, S. S., Yoshida, R., Rau, R. R., Arneodo, M., Schioppa, M., Susinno, G., Bernstein, A., Caldwell, A., Gialas, I., Parsons, J. A., Ritz, S., Sciulli, F., Straub, P. B., Wai, L., Yang, S., Borzemski, P., Chwastowski, J., Eskreys, A., Piotrzkowski, K., Zachara, M., Zawiejski, L., Adamczyk, L., Bednarek, B., Eskreys, K., Jeleń, K., Kisielewska, D., Kowalski, T., Rulikowska-Zarȩbska, E., Suszycki, L., Zaja̧c, J., Kȩdzierski, T., Kotański, A., Przybycień, M., Bauerdick, L. A. T., Behrens, U., Bienlein, J. K., Böttcher, S., Coldewey, C., Drews, G., Flasiński, M., Fleck, I., Gilkinson, D. J., Göttlicher, P., Gutjahr, B., Haas, T., Hagge, L., Hain, W., Hasell, D., Heßling, H., Hultschig, H., Joos, P., Kasemann, M., Klanner, R., Koch, W., Köpke, L., Kötz, U., Kowalski, H., Kröger, W., Krüger, J., Labs, J., Ladage, A., Löhr, B., Löwe, M., Lüke, D., Mainusch, J., Mańczak, O., Ng, J. S. T., Nickel, S., Notz, D., Ohrenberg, K., Rohde, M., Roldán, J., Schneekloth, U., Schroeder, J., Schulz, W., Selonke, F., Stiliaris, E., Tsurugai, T., Vogel, W., Westphal, D., Wolf, G., Youngman, C., Grabosch, H. J., Leich, A., Meyer, A., Rethfeldt, C., Schlenstedt, S., Barbagli, G., Nuti, M., Pelfer, P., Anzivino, G., Pasquale, S., Qian, S., Votano, L., Bamberger, A., Freidhof, A., Poser, T., Stefan Soldner-Rembold, Theisen, G., Trefzger, T., Brook, N. H., Bussey, P. J., Doyle, A. T., Forbes, J. R., Jamieson, V. A., Raine, C., Saxon, D. H., Stavrianakou, M., Wilson, A. S., Dannemann, A., Holm, U., Horstmann, D., Kammerlocher, H., Krebs, B., Neumann, T., Sinkus, R., Wick, K., Badura, E., Burow, B. D., Fürtjes, A., Lohrmann, E., Milewski, J., Nakahata, M., Pavel, N., Poelz, G., Schott, W., Terron, J., Zetsche, F., Bacon, T. C., Beuselinck, R., Butterworth, I., Gallo, E., Harris, V. L., Long, K. R., Miller, D. B., Morawitz, P., Prinias, A., Sedgbeer, J. K., Vorvolakos, A., Whitfield, A., Bienz, T., Kreutzmann, H., Mallik, U., Mccliment, E., Roco, M., Wang, M. Z., Cloth, P., Filges, D., An, S. H., Hong, S. M., Kim, C. O., Kim, T. Y., Nam, S. W., Park, S. K., Suh, M. H., Yon, S. H., Imlay, R., Kartik, S., Kim, H. J., Mcneil, R. R., Metcalf, W., Nadendla, V. K., Barreiro, F., Cases, G., Graciani, R., Hernández, J. M., Hervás, L., Labarga, L., Del Peso, J., Puga, J., Trocóniz, J. F., Ikraiam, F., Mayer, J. K., Smith, G. R., Corriveau, F., Hanna, D. S., Hartmann, J., Hung, L. W., Lim, J. N., Matthews, C. G., Mitchell, J. W., Patel, P. M., Sinclair, L. E., Stairs, D. G., St Laurent, M., Ullmann, R., Bashkirov, V., Dolgoshein, B. A., Stifutkin, A., Bashindzhagyan, G. L., Ermolov, P. F., Gladilin, L. K., Golubkov, Y. A., Kobrin, V. D., Kuzmin, V. A., Kuznetsov, E. N., Savin, A. A., Solomin, A. N., Voronin, A. G., Zotov, N. P., Bentvelsen, S., Botje, M., Chlebana, F., Dake, A., Engelen, J., Jong, P., Kamps, M., Kooijman, P., Kruse, A., V. O'Dell, Tenner, A., Tiecke, H., Verkerke, W., Vreeswijk, M., Wiggers, L., Wolf, E., Woudenberg, R., Acosta, D., Bylsma, B., Durkin, L. S., Honscheid, K., Li, C., Ling, T. Y., Mclean, K. W., Murray, W. N., Park, I. H., Romanowski, T. A., Seidlein, R., Bailey, D. S., Blair, G. A., Byrne, A., Cashmore, R. J., Cooper-Sarkar, A. M., Daniels, D., Devenish, R. C. E., Harnew, N., Lancaster, M., Luffman, P. E., Mcfall, J., Nath, C., Quadt, A., Uijterwaal, H., Walczak, R., Wilson, F. F., Yip, T., Abbiendi, G., Bertolin, A., Brugnera, R., Carlin, R., Dal Corso, F., Giorgi, M., Dosselli, U., Gasparini, F., Limentani, S., Morandin, M., Posocco, M., Stanco, L., Stroili, R., Voci, C., Bulmahn, J., Butterworth, J. M., Feild, R. G., Oh, B. Y., Whitmore, J. J., Agostini, G. D., Guida, M., Iori, M., Mari, S. M., Marini, G., Mattioli, M., Nigro, A., Hart, J. C., Mccubbin, N. A., Prytz, K., Shah, T. P., Short, T. L., Barberis, E., Cartiglia, N., Heusch, C., Hook, M., Hubbard, B., Lockman, W., Sadrozinski, H. F. W., Seiden, A., Zer-Zion, D., Biltzinger, J., Seifert, R. J., Walenta, A. H., Zech, G., Abramowicz, H., Dagan, S., Levy, A., Hasegawa, T., Hazumi, M., Ishii, T., Kuze, M., Mine, S., Nagasawa, Y., Nagira, T., Nakao, M., Suzuki, I., Tokushuku, K., Yamada, S., Yamazaki, Y., Chiba, M., Hamatsu, R., Hirose, T., Homma, K., Kitamura, S., Nagayama, S., Nakamitsu, Y., Cirio, R., Costa, M., Ferrero, M. I., Lamberti, L., Maselli, S., Peroni, C., Sacchi, R., Solano, A., Staiano, A., Dardo, M., Bailey, D. C., Bandyopadhyay, D., Benard, F., Bhadra, S., Brkic, M., Crombie, M. B., Gingrich, D. M., Hartner, G. F., Levman, G. M., Martin, J. F., Orr, R. S., Sampson, C. R., Teuscher, R. J., Bullock, F. W., Catterall, C. D., Giddings, J. C., Jones, T. W., Khan, A. M., Lane, J. B., Makkar, P. L., Shaw, D., Shulman, J., Blankenship, K., Kochocki, J., Lu, B., Mo, L. W., Bogusz, W., Charchuła, K., Ciborowski, J., Gajewski, J., Grzelak, G., Kasprzak, M., Krzyzanowski, M., Muchorowski, K., Nowak, R. J., Pawlak, J. M., Tymieniecka, T., Wróblewski, A. K., Zakrzewski, J. A., Zarnecki, A. F., Adamus, M., Eisenberg, Y., Glasman, C., Karshon, U., Revel, D., Shapira, A., Ali, I., Behrens, B., Dasu, S., Fordham, C., Foudas, C., Goussiou, A., Loveless, R. J., Reeder, D. D., Silverstein, S., Smith, W. H., Frisken, W. R., Furutani, K. M., Iga, Y., Derrick, M, Krakauer, D, Magill, S, Musgrave, B, Repond, J, Schlereth, J, Stanek, R, Talaga, Rl, Thron, J, Arzarello, F, Ayad, R, Bari, G, Basile, M, Bellagamba, L, Boscherini, D, Bruni, A, Bruni, G, Bruni, P, Romeo, Gc, Castellini, G, Chiarini, M, Cifarelli, L, Cindolo, F, Ciralli, F, Contin, A, Dauria, S, Delpapa, C, Frasconi, F, Giusti, P, Iacobucci, G, Laurenti, G, Levi, G, Maccarrone, G, Margotti, A, Massam, T, Nania, R, Nemoz, C, Palmonari, F, Sartorelli, G, Timellini, R, Garcia, Yz, Zichichi, A, Bargende, A, Crittenden, J, Desch, K, Diekmann, B, Doeker, T, Feld, L, Frey, A, Geerts, M, Geitz, G, Hartmann, H, Haun, D, Heinloth, K, Hilger, E, Jakob, Hp, Katz, Uf, Kramarczyk, S, Mass, A, Mengel, S, Mollen, J, Paul, E, Rembser, C, Schattevoy, R, Schneider, Jl, Schramm, D, Stamm, J, Wedemeyer, R, Campbellrobson, S, Cassidy, A, Dyce, N, Foster, B, George, S, Gilmore, R, Heath, Gp, Heath, Hf, Llewellyn, Tj, Morgado, Cj, Norman, Djp, Omara, Ja, Tapper, Rj, Wilson, S, Yoshida, R, Rau, Rr, Arneodo, M, Schioppa, M, Susinno, G, Bernstein, A, Caldwell, A, Gialas, I, Parsons, Ja, Ritz, S, Sciulli, F, Straub, Pb, Wai, L, Yang, S, Borzemski, P, Chwastowski, J, Eskreys, A, Piotrzkowski, K, Zachara, M, Zawiejski, L, Adamczyk, L, Bednarek, B, Eskreys, K, Jelen, K, Kisielewska, D, Kowalski, T, Rulikowskazarebska, E, Suszycki, L, Zajac, J, Kedzierski, T, Kotanski, A, Przybycien, M, Bauerdick, Lat, Behrens, U, Bienlein, Jk, Bottcher, S, Coldewey, C, Drews, G, Flasinski, M, Fleck, I, Gilkinson, Dj, Gottlicher, P, Gutjahr, B, Haas, T, Hagge, L, Hain, W, Hasell, D, Hessling, H, Hultschig, H, Joos, P, Kasemann, M, Klanner, R, Koch, W, Kopke, L, Kotz, U, Kowalski, H, Kroger, W, Kruger, J, Labs, J, Ladage, A, Lohr, B, Lowe, M, Luke, D, Mainusch, J, Manczak, O, Ng, Jst, Nickel, S, Notz, D, Ohrenberg, K, Rohde, M, Roldan, J, Schneekloth, U, Schroeder, J, Schulz, W, Selonke, F, Stiliaris, E, Tsurugai, T, Vogel, W, Westphal, D, Wolf, G, Youngman, C, Grabosch, Hj, Leich, A, Meyer, A, Rethfeldt, C, Schlenstedt, S, Barbagli, G, Nuti, M, Pelfer, P, Anzivino, G, Depasquale, S, Qian, S, Votano, L, Bamberger, A, Freidhof, A, Poser, T, Soldnerrembold, S, Theisen, G, Trefzger, T, Brook, Nh, Bussey, Pj, Doyle, At, Forbes, Jr, Jamieson, Va, Raine, C, Saxon, Dh, Stavrianakou, M, Wilson, A, Dannemann, A, Holm, U, Horstmann, D, Kammerlocher, H, Krebs, B, Neumann, T, Sinkus, R, Wick, K, Badura, E, Burow, Bd, Furtjes, A, Lohrmann, E, Milewski, J, Nakahata, M, Pavel, N, Poelz, G, Schott, W, Terron, J, Zetsche, F, Bacon, Tc, Beuselinck, R, Butterworth, I, Gallo, E, Harris, Vl, Long, Kr, Miller, Db, Morawitz, P, Prinias, A, Sedgbeer, Jk, Vorvolakos, A, Whitfield, A, Bienz, T, Kreutzmann, H, Mallik, U, Mccliment, E, Roco, M, Wang, Mz, Cloth, P, Filges, D, An, Sh, Hong, S, Kim, Co, Kim, Ty, Nam, Sw, Park, Sk, Suh, Mh, Yon, Sh, Imlay, R, Kartik, S, Kim, Hj, Mcneil, Rr, Metcalf, W, Nadendla, Vk, Barreiro, F, Cases, G, Graciani, R, Hernandez, Jm, Hervas, L, Labarga, L, Delpeso, J, Puga, J, Detroconiz, Jf, Ikraiam, F, Mayer, Jk, Smith, Gr, Corriveau, F, Hanna, D, Hartmann, J, Hung, Lw, Lim, Jn, Matthews, Cg, Mitchell, Jw, Patel, Pm, Sinclair, Le, Stairs, Dg, Stlaurent, M, Ullmann, R, Bashkirov, V, Dolgoshein, Ba, Stifutkin, A, Bashindzhagyan, Gl, Ermolov, Pf, Gladilin, Lk, Golubkov, Ya, Kobrin, Vd, Kuzmin, Va, Kuznetsov, En, Savin, Aa, Solomin, An, Voronin, Ag, Zotov, Np, Bentvelsen, S, Botje, M, Chlebana, F, Dake, A, Engelen, J, Dejong, P, Dekamps, M, Kooijman, P, Kruse, A, Odell, V, Tenner, A, Tiecke, H, Verkerke, W, Vreeswijk, M, Wiggers, L, Dewolf, E, Vanwoudenberg, R, Acosta, D, Bylsma, B, Durkin, L, Honscheid, K, Li, C, Ling, Ty, Mclean, Kw, Murray, Wn, Park, Ih, Romanowski, Ta, Seidlein, R, Bailey, D, Blair, Ga, Byrne, A, Cashmore, Rj, Coopersarkar, Am, Daniels, D, Devenish, Rce, Harnew, N, Lancaster, M, Luffman, Pe, Mcfall, J, Nath, C, Quadt, A, Uijterwaal, H, Walczak, R, Wilson, Ff, Yip, T, Abbiendi, G, Bertolin, A, Brugnera, R, Carlin, R, Dalcorso, F, Degiorgi, M, Dosselli, U, Gasparini, F, Limentani, S, Morandin, M, Posocco, M, Stanco, L, Stroili, R, Voci, C, Bulmahn, J, Butterworth, Jm, Field, Rg, Oh, By, Whitmore, Jj, Dagostini, G, Guida, M, Iori, M, Mari, Stefano Maria, Marini, G, Mattioli, M, Nigro, A, Hart, Jc, Mccubbin, Na, Prytz, K, Shah, Tp, Short, Tl, Barberis, E, Cartiglia, N, Heusch, C, Vanhook, M, Hubbard, B, Lockman, W, Sadrozinski, Hfw, Seiden, A, Zerzion, D, Biltzinger, J, Seifert, Rj, Walenta, Ah, Zech, G, Abramowicz, H, Dagan, S, Levy, A, Hasegawa, T, Hazumi, M, Ishii, T, Kuze, M, Mine, S, Nagasawa, Y, Nagira, T, Nakao, M, Suzuki, I, Tokushuku, K, Yamada, S, Yamazaki, Y, Chiba, M, Hamatsu, R, Hirose, T, Homma, K, Kitamura, S, Nagayama, S, Nakamitsu, Y, Cirio, R, Costa, M, Ferrero, Mi, Lamberti, L, Maselli, S, Peroni, C, Sacchi, R, Solano, A, Staiano, A, Dardo, M, Bailey, Dc, Bandyopadhyay, D, Benard, F, Bhadra, S, Brkic, M, Crombie, Mb, Gingrich, Dm, Hartner, Gf, Levman, Gm, Martin, Jf, Orr, R, Sampson, Cr, Teuscher, Rj, Bullock, Fw, Catterall, Cd, Giddings, Jc, Jones, Tw, Khan, Am, Lane, Jb, Makkar, Pl, Shaw, D, Shulman, J, Blankenship, K, Kochocki, J, Lu, B, Mo, Lw, Bogusz, W, Charchula, K, Ciborowski, J, Gajewski, J, Grzelak, G, Kasprzak, M, Krzyzanowski, M, Muchorowski, K, Nowak, Rj, Pawlak, Jm, Tymieniecka, T, Wroblewski, Ak, Zakrzewski, Ja, Zarnecki, Af, Adamus, M, Eisenberg, Y, Glasman, C, Karshon, U, Revel, D, Shapira, A, Ali, I, Behrens, B, Dasu, S, Fordham, C, Foudas, C, Goussiou, A, Loveless, Rj, Reeder, Dd, Silverstein, S, Smith, Wh, Frisken, Wr, Furutani, Km, and Iga, Y.
Subjects: LUND MONTE-CARLO, DIFFRACTION DISSOCIATION, POMERON STRUCTURE, E+E-PHYSICS, ZEUS, VERSION, FRAGMENTATION, CALORIMETER, DETECTOR, EVENTS, Nuclear and High Energy Physics, Particle physics, jet production, Astrophysics::High Energy Astrophysical Phenomena, deep inelastic scattering, large rapidity gap, Virtual particle, Electron, Nuclear physics, Energy flow, Rapidity, Nuclear Experiment, Physics, Scattering, HERA, Deep inelastic scattering, Transverse plane, High Energy Physics::Experiment
Abstract: Events with a large rapidity gap in deep inelastic scattering with Q2 greater-than-or-equal-to 10 GeV2 have been studied in the ZEUS detector. The properties of these events with W > 140 GeV are consistent with a leading twist diffractive production mechanism. In the laboratory frame, with E(T)jet greater-than-or-equal-to 4 GeV, 15% of the events are of the 1-jet type with negligible 2-jet production. The single jet is back-to-back in azimuth with the scattered electron. No energy flow is observed between the jet and the proton direction. With a lower jet transverse energy cut 2-jet production is observed both in the laboratory and the gamma*p centre-of-mass systems, demonstrating the presence of hard scattering in the virtual photon proton interactions that give rise to large rapidity gap events.
Published: 1994
Full Text: View/download PDF

3. Jet production in highQ 2 deep-inelastic ep scattering at HERA

Author: Derrick, M., Krakauer, D., Magill, S., Mikunas, D., Musgrave, B., Repond, J., Stanek, R., Talaga, Rl, Zhang, H., Ayad, R., Bari, G., Basile, M., Bellagamba, L., Boscherini, D., Bruni, A., Bruni, G., Bruni, P., Romeo, Gc, Castellini, G., Chiarini, M., Cifarelli, L., Cindolo, F., Contin, A., Corradi, M., Gialas, I., Giusti, P., Iacobucci, G., Laurenti, G., Levi, G., Margotti, A., Massam, T., Nania, R., Nemoz, C., Palmonari, F., Polini, A., Sartorelli, G., Timellini, R., Garcia, Yz, Zichichi, A., Bargende, A., Crittenden, J., Desch, K., Diekmann, B., Doeker, T., Eckert, M., Feld, L., Frey, A., Geerts, M., Geitz, G., Grothe, M., Haas, T., Hartmann, H., Haun, D., Heinloth, K., Hilger, E., Jakob, Hp, Katz, Uf, Mari, Sm, Mass, A., Mengel, S., Mollen, J., Paul, E., Rembser, C., Schattevoy, R., Schramm, D., Stamm, J., Wedemeyer, R., Campbellrobson, S., Cassidy, A., Dyce, N., Foster, B., George, S., Gilmore, R., Heath, Gp, Heath, Hf, Llewellyn, Tj, Morgado, Cjs, Norman, Djp, Omara, Ja, Tapper, Rj, Wilson, Ss, Yoshida, R., Rau, Rr, Arneodo, M., Iannotti, L., Schioppa, M., Susinno, G., Bernstein, A., Caldwell, A., Parsons, Ja, Ritz, S., Sciulli, F., Straub, Pb, Wai, L., Yang, S., Zhu, Q., Borzemski, P., Chwastowski, J., Eskreys, A., Piotrzkowski, K., Zachara, M., Zawiejski, L., Adamczyk, L., Bednarek, B., Eskreys, K., Jelen, K., Kisielewska, D., Kowalski, T., Rulikowskazarebska, E., Suszycki, L., Zajac, J., Kotanski, A., Przybycien, M., Bauerdick, Lat, Behrens, U., Beier, H., Bienlein, Jk, Coldewey, C., Deppe, O., Desler, K., Drews, G., Flasinski, M., Gilkinson, Dj, Glasman, C., Gottlicher, P., Grosseknetter, J., Gutjahr, B., Hain, W., Hasell, D., Hessling, H., Hultschig, H., Iga, Y., Joos, P., Kasemann, M., Klanner, R., Koch, W., Kopke, L., Kotz, U., Kowalski, H., Labs, J., Ladage, A., Lohr, B., Lowe, M., Luke, D., Manczak, O., Ng, Jst, Nickel, S., Notz, D., Ohrenberg, K., Roco, M., Rohde, M., Roldan, J., Schneekloth, U., Schulz, W., Selonke, F., Stiliaris, E., Surrow, B., Voss, T., Westphal, D., Wolf, G., Youngman, C., Zhou, Jf, Grabosch, Hj, Kharchilava, A., Leich, A., Mattingly, M., Meyer, A., Schlenstedt, S., Wulff, N., Barbagli, G., Pelfer, P., Anzivino, G., Maccarrone, G., Depasquale, S., Votano, L., Bamberger, A., Eisenhardt, S., Freidhof, A., Soldnerrembold, S., Schroeder, J., Trefzger, T., Brook, Nh, Bussey, Pj, Doyle, At, Fleck, I., Saxon, Dh, Utley, Hl, Wilson, As, Dannemann, A., Holm, U., Horstmann, D., Neumann, T., Sinkus, R., Wick, K., Badura, E., Burow, Bd, Hagge, L., Lohrmann, E., Mainusch, J., Milewski, J., Nakahata, M., Pavel, N., Poelz, G., Schott, W., Zetsche, F., Bacon, Tc, Butterworth, I., Gallo, E., Harris, Vl, Hung, Byh, Long, Kr, Miller, Db, Morawitz, Ppo, Prinias, A., Sedgbeer, Jk, Whitfield, Af, Mallik, U., Mccliment, E., Wang, Mz, Wang, Sm, Wu, Jt, Zhang, Y., Cloth, P., Filges, D., An, Sh, Hong, Sm, Nam, Sw, Park, Sk, Suh, Mh, Yon, Sh, Imlay, R., Kartik, S., Kim, Hj, Mcneil, Rr, Metcalf, W., Nadendla, Vk, Barreiro, F., Cases, G., Graciani, R., Hernandez, Jm, Hervas, L., Labarga, L., Delpeso, J., Puga, J., Terron, J., Detroconiz, Jf, Smith, Gr, Corriveau, F., Hanna, Ds, Hartmann, J., Hung, Lw, Lim, Jn, Matthews, Cg, Patel, Pm, Sinclair, Le, Stairs, Dg, Laurent, Ms, Ullmann, R., Zacek, G., Bashkirov, V., Dolgoshein, Ba, Stifutkin, A., Bashindzhagyan, Gl, Ermolov, Pf, Gladilin, Lk, Golubkov, Ya, Kobrin, Vd, Kuzmin, Va, Proskuryakov, As, Savin, Aa, Shcheglova, Lm, Solomin, An, Zotov, Np, Botje, M., Chlebana, F., Dake, A., Engelen, J., Dekamps, M., Kooijman, P., Kruse, A., Tiecke, H., Verkerke, W., Vreeswijk, M., Wiggers, L., Dewolf, E., Vanwoudenberg, R., Acosta, D., Bylsma, B., Durkin, Ls, Honscheid, K., Li, C., Ling, Ty, Mclean, Kw, Murray, Wn, Park, Ih, Romanowski, Ta, Seidlein, R., Bailey, Ds, Blair, Ga, Byrne, A., Cashmere, Rj, Coopersarkar, Am, Daniels, D., Devenish, Rce, Harnew, N., Lancaster, M., Luffman, Pe, Lindemann, L., Mcfall, Jd, Nath, C., Noyes, Va, Quadt, A., Uijterwaal, H., Walczak, R., Wilson, Ff, Yip, T., Abbiendi, G., Bertolin, A., Brugnera, R., Carlin, R., Dalcorso, F., Degiorgi, M., Dosselli, U., Limentani, S., Morandin, M., Posocco, M., Stanco, L., Stroili, R., Voci, C., Bulmahn, J., Butterworth, Jm, Feild, Rg, Oh, By, Whitmore, Jj, Dagostini, G., Marini, G., Nigro, A., Enrico TASSI, Hart, Jc, Mccubbin, Na, Prytz, K., Shah, Tp, Short, Tl, Barberis, E., Cartiglia, N., Dubbs, T., Heusch, C., Vanhook, M., Hubbard, B., Lockman, W., Rahn, Jt, Sadrozinski, Hfw, Seiden, A., Biltzinger, J., Seifert, Rj, Walenta, Ah, Zech, G., Abramowicz, H., Briskin, G., Dagan, S., Levy, A., Hasegawa, T., Hazumi, M., Ishii, T., Kuze, M., Mine, S., Nagasawa, Y., Nakao, M., Suzuki, I., Tokushuku, K., Yamada, S., Yamazaki, Y., Chiba, M., Hamatsu, R., Hirose, T., Homma, K., Kitamura, S., Nakamitsu, Y., Yamauchi, K., Cirio, R., Costa, M., Ferrero, Mi, Lamberti, L., Maselli, S., Peroni, C., Sacchi, R., Solano, A., Staiano, A., Dardo, M., Bailey, Dc, Bandyopadhyay, D., Benard, F., Brkic, M., Crombie, Mb, Gingrich, Dm, Hartner, Gf, Joo, Kk, Levman, Gm, Martin, Jf, Orr, Rs, Sampson, Cr, Teuscher, Rj, Catterall, Cd, Jones, Tw, Kaziewicz, Pb, Lane, Jb, Saunders, Rl, Shulman, J., Blankenship, K., Kochocki, J., Lu, B., Mo, Lw, Bogusz, W., Charchula, K., Ciborowski, J., Gajewski, J., Grzelak, G., Kasprzak, M., Krzyanowski, M., Muchorowski, K., Nowak, Rj, Pawlak, Jm, Tymieniecka, T., Wroblewski, Ak, Zakrzewski, Ja, Zarnecki, Af, Adamus, M., Eisenberg, Y., Karshon, U., Revel, D., Zerzion, D., Ali, I., Badgett, Wf, Behrens, B., Dasu, S., Fordham, C., Foudas, C., Goussiou, A., Loveless, Rj, Reeder, Dd, Silverstein, S., Smith, Wh, Vaiciulis, A., Wodarczyk, M., Tsurugai, T., Bhadra, S., Cardy, Ml, Fagerstroem, Cp, Frisken, Wr, Furutani, Km, Khakzad, M., and Schmidke, Wb
Subjects: Particle physics, jet production, Physics and Astronomy (miscellaneous), Astrophysics::High Energy Astrophysical Phenomena, ZEUS, PARTON DISTRIBUTIONS, PROTON SCATTERING, DEPENDENCE, RATES, FOS: Physical sciences, Jet (particle physics), perturbative QCD, 01 natural sciences, 7. Clean energy, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Proton scattering, 0103 physical sciences, Nuclear Experiment, 010306 general physics, Engineering (miscellaneous), Scaling, Quantum chromodynamics, Physics, ZEUS (particle detector), 010308 nuclear & particles physics, Scattering, HERA, High Energy Physics::Experiment, Production (computer science)
Abstract: Two-jet production in deep-inelastic electron-proton scattering has been studied for $160, Comment: 26 pages, latex, 9 figures appended as uuencoded file
Published: 1995
Full Text: View/download PDF

4. Forward jet production in deep inelastic scattering at HERA

Author: Breitweg, J, Derrick, M, Krakauer, D, Magill, S, Mikunas, D, Musgrave, B, Repond, J, Stanek, R, Talaga, RL, Yoshida, R, Zhang, H, Mattingly, MCK, Anselmo, F, Antonioli, P, Bari, G, Basile, M, Bellagamba, L, Boscherini, D, Bruni, A, Bruni, G, CaraRomeo, G, Castellini, G, Cifarelli, L, Cindolo, F, Contin, A, Coppola, N, Corradi, M, De Pasquale, S, Giusti, P, Iacobucci, G, Laurenti, G, Levi, G, Margotti, A, Massam, T, Nania, R, Palmonari, F, Pesci, A, Polini, A, Sartorelli, G, Garcia, YZ, Zichichi, A, Amelung, C, Bornheim, A, Brock, I, Coboken, K, Crittenden, J, Deffner, R, Eckert, M, Grothe, M, Hartmann, H, Heinloth, K, Heinz, L, Hilger, E, Jakob, HP, Kappes, A, Katz, UF, Kerger, R, Paul, E, Pfeiffer, M, Stamm, J, Wieber, H, Bailey, DS, Campbell-Robson, S, Cottingham, WN, Foster, B, Hall-Wilton, R, Heath, GP, Heath, HF, McFall, JD, Piccioni, D, Roff, DG, Tapper, RJ, Ayad, R, Capua, M, Iannotti, L, Schioppa, M, Susinno, G, Kim, JY, Lee, JH, Lim, IT, Pac, MY, Caldwell, A, Cartiglia, N, Jing, Z, Liu, W, Mellado, B, Parsons, JA, Ritz, S, Sampson, S, Sciulli, F, Straub, PB, Zhu, Q, Borzemski, P, Chwastowski, J, Eskreys, A, Figiel, J, Klimek, K, Przybycien, MB, Zawiejski, L, Adamczyk, L, Bednarek, B, Bukowy, M, Czermak, AM, Jelen, K, Kisielewska, D, Kowalski, T, Przybycien, M, Rulikowska-Zarebska, E, Suszycki, L, Zajac, J, Dulinski, Z, Kotanski, A, Abbiendi, G, Bauerdick, LAT, Behrens, U, Beier, H, Bienlein, JK, Desler, K, Drews, G, Fricke, U, Gialas, I, Goebel, F, Gottlicher, P, Graciani, R, Haas, T, Hain, W, Hasell, D, Hebbel, K, Johnson, KF, Kasemann, M, Koch, W, Kotz, U, Kowalski, H, Lindemann, L, Lohr, B, Milewski, J, Milite, M, Monteiro, T, Ng, JST, Notz, D, Pellegrino, A, Pelucchi, F, Piotrzkowski, K, Rohde, M, Roldan, J, Ryan, JJ, Saull, PRB, Savin, AA, Schneckloth, U, Schwarzer, O, Selonke, F, Stonjek, S, Surrow, B, Tassi, E, Westphal, D, Wolf, G, Wollmer, U, Youngman, C, Zeuner, V, Burow, BD, Coldewey, C, Grabosch, HJ, Meyer, A, Schlenstedt, S, Barbagli, G, Gallo, E, Pelfer, P, Maccarrone, G, Votano, L, Bamberger, A, Eisenhardt, S, Markun, P, Raach, H, Trefzger, T, Wolfle, S, Bromley, JT, Brook, NH, Bussey, PJ, Doyle, AT, Lee, SW, Macdonald, N, McCance, GJ, Saxon, DH, Sinclair, LE, Skillicorn, IO, Strickland, E, Waugh, R, Bohnet, I, Gendner, N, Holm, U, Meyer-Larsen, A, Salehi, H, Wick, K, Garfagnini, A, Gladilin, LK, Horstmann, D, Kcira, D, Klanner, R, Lohrmann, E, Poelz, G, Schott, W, Zetsche, F, Bacon, TC, Butterworth, I, Cole, JE, Howell, G, Lamberti, L, Long, KR, Miller, DB, Pavel, N, Prinias, A, Sedgbeer, JK, Sideris, D, Walker, R, Mallik, U, Wang, SM, Wu, JT, Cloth, P, Filges, D, Fleck, JI, Ishii, T, Kuze, M, Suzuki, I, Tokushuku, K, Yamada, S, Yamauchi, K, Yamazaki, Y, Hong, SJ, Lee, SB, Nam, SW, Park, SK, Lim, H, Park, IH, Son, D, Barreiro, F, Fernandez, JP, Garcia, G, Glasman, C, Hernandez, JM, Hervas, L, Labarga, L, Martinez, M, del Peso, J, Puga, J, Terron, J, de Troconiz, JF, Corriveau, F, Hanna, DS, Hartmann, J, Hung, LW, Murray, WN, Ochs, A, Riveline, M, Stairs, DG, St-Laurent, M, Ullmann, R, Tsurugai, T, Bashkirov, V, Dolgoshein, BA, Stifutkin, A, Bashindzhagyan, GL, Ermolov, PF, Golubkov, YA, Khein, LA, Korotkova, NA, Korzhavina, IA, Kuzmin, VA, Lukina, OY, Proskuryakov, AS, Shcheglova, LM, Solomin, AN, Zotkin, SA, Bokel, C, Botje, M, Brummer, N, Engelen, J, Koffeman, E, Kooijman, P, van Sighem, A, Tiecke, H, Tuning, N, Verkerke, W, Vossebeld, J, Wiggers, L, de Wolf, E, Acosta, D, Bylsma, B, Durkin, LS, Gilmore, J, Ginsburg, CM, Kim, CL, Ling, TY, Nylander, P, Romanowski, TA, Blaikley, HE, Cashmore, RJ, Cooper-Sarkar, AM, Devenish, RCE, Edmonds, JK, Grosse-Knetter, J, Harnew, N, Nath, C, Noyes, VA, Quadt, A, Ruske, O, Tickner, JR, Walczak, R, Waters, DS, Bertolin, A, Brugnera, R, Carlin, R, Dal Corso, F, Dosselli, U, Limentani, S, Morandin, M, Posocco, M, Stanco, L, Stroili, R, Voci, C, Bulmahn, J, Oh, BY, Okrasinski, JR, Toothacker, WS, Whitmore, JJ, Iga, Y, D'Agostini, G, Marini, G, Nigro, A, Raso, M, Hart, JC, McCubbin, NA, Shah, TP, Epperson, D, Heusch, C, Rahn, JT, Sadrozinski, HFW, Seiden, A, Wichmann, R, Williams, DC, Abramowicz, H, Briskin, G, Dagan, S, Kananov, S, Levy, A, Abe, T, Fusayasu, T, Inuzuka, M, Nagano, K, Umemori, K, Yamashita, T, Hamatsu, R, Hirose, T, Homma, K, Kitamura, S, Matsushita, T, Arneodo, M, Cirio, R, Costa, M, Ferrero, MI, Maselli, S, Monaco, V, Peroni, C, Petrucci, MC, Ruspa, M, Sacchi, R, Solano, A, Staiano, A, Dardo, M, Bailey, DC, Fagerstroem, CP, Galea, R, Hartner, GF, Joo, KK, Levman, GM, Martin, JF, Orr, RS, Polenz, S, Sabetfakhri, A, Simmons, D, Teuscher, RJ, Butterworth, JM, Catterall, CD, Hayes, ME, Jones, TW, Lane, JB, Saunders, RL, Sutton, MR, Wing, M, Ciborowski, J, Grzelak, G, Kasprzak, M, Nowak, RJ, Pawlak, JM, Pawlak, R, Smalska, B, Tymieniecka, T, Wroblewski, AK, Zakrzewski, JA, Zarnecki, AF, Adamus, M, Deppe, O, Eisenberg, Y, Hochman, D, Karshon, U, Badgett, WF, Chapin, D, Cross, R, Dasu, S, Foudas, C, Loveless, RJ, Mattingly, S, Reeder, DD, Smith, WH, Vaiciulis, A, Wodarczyk, M, Deshpande, A, Dhawan, S, Hughes, VW, Bhadra, S, Frisken, WR, Khakzad, M, Schmidke, WB, Collaboration, ZEUS, 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: Particle physics, MONTE-CARLO GENERATOR, Physics and Astronomy (miscellaneous), Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Inelastic scattering, 7. Clean energy, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, ENERGY, High Energy Physics - Experiment (hep-ex), QCD COHERENCE, 0103 physical sciences, EVENT GENERATOR, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], ddc:530, Rapidity, 010306 general physics, Parton shower, Nuclear Experiment, Engineering (miscellaneous), LOW-X REGIME, Event generator, Quantum chromodynamics, Physics, Jet (fluid), 010308 nuclear & particles physics, High Energy Physics::Phenomenology, MOMENTUM SPECTRA, ZEUS, ZEUS BARREL CALORIMETER, HERA, TO-LEADING ORDER, PARTON DISTRIBUTIONS, EP SCATTERING, Deep inelastic scattering, High Energy Physics::Experiment
Abstract: The production of forward jets has been measured in deep inelastic ep collisions at HERA. The results are presented in terms of single differential cross sections as a function of the Bjorken scaling variable (x_{Bj}) and as triple differential cross sections d^3 \sigma / dx_{Bj} dQ^2 dp_{t,jet}^2, where Q^2 is the four momentum transfer squared and p_{t,jet}^2 is the squared transverse momentum of the forward jet. Also cross sections for events with a di-jet system in addition to the forward jet are measured as a function of the rapidity separation between the forward jet and the two additional jets. The measurements are compared with next-to-leading order QCD calculations and with the predictions of various QCD-based models., Comment: 27 pages, 10 figures, 4 tables
Published: 1999
Full Text: View/download PDF

5. Measurement of the diffractive structure function F2D(4) at HERA

Author: Breitweg, J, Derrick, M, Krakauer, D, Magill, S, Mikunas, D, Musgrave, B, Repond, J, Stanek, R, Talaga, Rl, Yoshida, R, Zhang, H, Mattingly, Mck, Anselmo, F, Antonioli, P, Bari, G, Basile, M, Bellagamba, L, Boscherini, D, Bruni, A, Bruni, G, Romeo, Gc, Castellini, G, Chiarini, M, Cifarelli, L, Cindolo, F, Contin, A, Corradi, M, DE PASQUALE, S, Gialas, I, Giusti, P, Iacobucci, G, Laurenti, G, Levi, G, Margotti, A, Massam, T, Nania, R, Nemoz, C, Palmonari, F, Pesci, A, Polini, A, Ricci, F, Sartorelli, G, Garcia, Yz, Zichichi, A, Amelung, C, Bornheim, A, Brock, I, Coboken, K, Crittenden, J, Deffner, R, Eckert, M, Grothe, M, Hartmann, H, Heinloth, K, Heinz, L, Hilger, E, Jakob, Hp, Katz, Uf, Kerger, R, Paul, E, Pfeiffer, M, Rembser, C, Stamm, J, Wedemeyer, R, Wieber, H, Bailey, Ds, CAMPBELL ROBSON, S, Cottingham, Wn, Foster, B, HALL WILTON, R, Hayes, Me, Heath, Gp, Heath, Hf, Mcfall, Jd, Piccioni, D, Roff, Dg, Tapper, Rj, Arneodo, M, Ayad, R, Capua, M, Garfagnini, Alberto, Iannotti, L, Schioppa, M, Susinno, G, Kim, Jy, Lee, Jh, Lim, It, Pac, My, Caldwell, A, Cartiglia, N, Jing, Z, Liu, W, Mellado, B, Parsons, Ja, Ritz, S, Sampson, S, Sciulli, F, Straub, Pb, Zhu, Q, Borzemski, P, Chwastowski, J, Eskreys, A, Figiel, J, Klimek, K, Przybycien, Mb, Zawiejski, L, Adamczyk, L, Bednarek, B, Bukowy, M, Jelen, K, Kisielewska, D, Kowalski, T, Przybycien, M, RULIKOWSKA ZAREBSKA, E, Suszycki, L, Zajac, J, Dulinski, Z, Kotanski, A, Abbiendi, G, Bauerdick, Lat, Behrens, U, Beier, H, Bienlein, Jk, Cases, G, Deppe, O, Desler, K, Drews, G, Fricke, U, Gilkinson, Dj, Glasman, C, Gottlicher, P, Haas, T, Hain, W, Hasell, D, Johnson, Kf, Kasemann, M, Koch, W, Kotz, U, Kowalski, H, Labs, J, Lindemann, L, Lohr, B, Lowe, M, Manczak, O, Milewski, J, Monteiro, T, Jst, Ng, Notz, D, Ohrenberg, K, Park, Ih, Pellegrino, A, Pelucchi, F, Piotrzkowski, K, Roco, M, Rohde, M, Roldan, J, Ryan, Jj, Savin, Aa, Schneekloth, U, Selonke, F, Surrow, B, Tassi, E, Voss, T, Westphal, D, Wolf, G, Wollmer, U, Youngman, C, Zarnecki, Af, Zeuner, W, Burow, Bd, Grabosch, Hj, Meyer, A, Schlenstedt, S, Barbagli, G, Gallo, E, Pelfer, P, Anzivino, G, Maccarrone, G, Votano, L, Bamberger, A, Eisenhardt, S, Markun, P, Trefzger, T, Wolfle, S, Bromley, Jt, Brook, Nh, Bussey, Pj, Doyle, At, Macdonald, N, Saxon, Dh, Sinclair, Le, Strickland, E, Waugh, R, Bohnet, I, Gendner, N, Holm, U, MEYER LARSEN, A, Salehi, H, Wick, K, Gladilin, Lk, Horstmann, D, Kcira, D, Klanner, R, Lohrmann, E, Poelz, G, Schott, W, Zetsche, F, Bacon, Tc, Butterworth, I, Cole, Je, Howell, G, Hung, Bhy, Lamberti, L, Long, Kr, Miller, Db, Pavel, N, Prinias, A, Sedgbeer, Jk, Sideris, D, Mallik, U, Wang, Sm, Wu, Jt, Cloth, P, Filges, D, Fleck, Ji, Ishii, T, Kuze, M, Suzuki, I, Tokushuku, K, Yamada, S, Yamauchi, K, Yamazaki, Y, Hong, Sj, Lee, Sb, Nam, Sw, Park, Sk, Barreiro, F, Fernandez, Jp, Garcia, G, Graciani, R, Hernandez, Jm, Hervas, L, Labarga, L, Martinez, M, DEL PESO, J, Puga, J, Terron, J, DE TROCONIZ JF, Corriveau, F, Hanna, Ds, Hartmann, J, Hung, Lw, Murray, Wn, Ochs, A, Riveline, M, Stairs, Dg, ST LAURENT, M, Ullmann, R, Tsurugai, T, Bashkirov, V, Dolgoshein, Ba, Stifutkin, A, Bashindzhagyan, Gl, Ermolov, Pf, Golubkov, Ya, Khein, La, Korotkova, Na, Korzhavina, Ia, Kuzmin, Va, Lukina, Oy, Proskuryakov, As, Shcheglova, Lm, Solomin, An, Zotkin, Sa, Bokel, C, Botje, M, Brummer, N, Chlebana, F, Engelen, J, Koffeman, E, Kooijman, P, VAN SIGHEM, A, Tiecke, H, Tuning, N, Verkerke, W, Vossebeld, J, Vreeswijk, M, Wiggers, L, DE WOLF, E, Acosta, D, Bylsma, B, Durkin, Ls, Gilmore, J, Ginsburg, Cm, Kim, Cl, Ling, Ty, Nylander, P, Romanowski, Ta, Blaikley, He, Cashmore, Rj, COOPER SARKAR AM, Devenish, Rce, Edmonds, Jk, GROSSE KNETTTER, J, Harnew, N, Lancaster, M, Nath, C, Noyes, Va, Quadt, A, Ruske, O, Tickner, Jr, Uijterwaal, H, Walczak, R, Waters, Ds, Bertolin, A, Brugnera, Riccardo, Carlin, Roberto, DAL CORSO, F, Dosselli, U, Limentani, Silvia, Morandin, M, Posocco, M, Stanco, L, Stroili, Roberto, Voci, Cesare, Bulmahn, J, Oh, By, Okrasinski, Jr, Toothacker, Ws, Whitmore, Jj, Iga, Y, D'Agostini, G, Marini, G, Nigro, A, Raso, M, Hart, Jc, Mccubbin, Na, Shah, Tp, Barberis, E, Epperson, D, Heusch, C, Rahn, Jt, Sadrozinski, Hfw, Seiden, A, Wichmann, R, Williams, Dc, Schwarzer, O, Walenta, Ah, Abramowicz, H, Briskin, G, Dagan, S, Kananov, S, Levy, A, Abe, T, Fusayasu, T, Inuzuka, M, Nagano, K, Umemori, K, Yamashita, T, Hamatsu, R, Hirose, T, Homma, K, Kitamura, S, Matsushita, T, Cirio, R, Costa, M, Ferrero, Mi, Maselli, S, Monaco, V, Peroni, C, Petrucci, Mc, Ruspa, M, Sacchi, R, Solano, A, Staiano, A, Dardo, M, Bailey, Dc, Fagerstroem, Cp, Galea, R, Hartner, Gf, Joo, Kk, Levman, Gm, Martin, Jf, Orr, Rs, Polenz, S, Sabetfakhri, A, Simmons, D, Teuscher, Rj, Butterworth, Jm, Catterall, Cd, Jones, Tw, Lane, Jb, Saunders, Rl, Shulman, J, Sutton, Mr, Wing, M, Ciborowski, J, Grzelak, G, Kasprzak, M, Muchorowski, K, Nowak, Rj, Pawlak, Jm, Pawlak, R, Tymieniecka, T, Wroblewski, Ak, Zakrzewski, Ja, Adamus, M, Coldewey, C, Eisenberg, Y, Hochman, D, Karshon, U, Badgett, Wf, Chapin, D, Cross, R, Dasu, S, Foudas, C, Loveless, Rj, Mattingly, S, Reeder, Dd, Smith, Wh, Vaiciulis, A, Wodarczyk, M, Bhadra, S, Frisken, Wr, Khakzad, M, and Schmidke, Wb
Subjects: Physics, Quark, Elastic scattering, Photon, Physics and Astronomy (miscellaneous), Scattering, HERA, Deep inelastic scattering, Dissociation (chemistry), Nuclear physics, Regge theory, High Energy Physics::Experiment, Nuclear Experiment, Engineering (miscellaneous)
Abstract: This paper presents the first analysis of diffractive photon dissociation events in deep inelastic positron-proton scattering at HERA in which the proton in the final state is detected and its momentum measured. The events are selected by requiring a scattered proton in the ZEUS leading proton spectrometer (LPS) with χL > 0.97, where xL is the fraction of the incoming proton beam momentum carried by the scattered proton. The use of the LPS significantly reduces the contamination from events with diffractive dissociation of the proton into low mass states and allows a direct measurement of t, the square of the four-momentum exchanged at the proton vertex. The dependence of the cross section ont is measured in the interval 0.073 < |t| < 0.4 GeV2 and is found to be described by an exponential shape with the slope parameterb = 7.2 ± 1.1(stat.)−0.9+0.7(syst.) GeV−2. The diffractive structure function FD (4) is presented as 0.9 a function of χH ≃ 1 − χL and β, the momentum fraction of the struck quark with respect to χH, and averaged over thet interval 0.073 < |t′ < 0.4 GeV2 and the photon virtuality range 5
Published: 1998

6. Search for selectron and squark production in e(+)p collisions at HERA

Author: Breitweg, J., Derrick, M., Krakauer, D., Magill, S., Mikunas, D., Musgrave, B., Repond, J., Stanek, R., Talaga, R. L., Yoshida, R., Zhang, H., Mattingly, M. C. K., Anselmo, F., Antonioli, P., Bari, G., Basile, M., Bellagamba, L., Boscherini, D., Bruni, A., Bruni, G., Cara Romeo, G., Castellini, G., Cifarelli, L., Cindolo, F., Contin, A., Coppola, N., Corradi, M., Pasquale, S., Giusti, P., Iacobucci, G., Laurenti, G., Giuseppe Levi, Margotti, A., Massam, T., Nania, R., Palmonari, F., Pesci, A., Polini, A., Sartorelli, G., Zamora Garcia, Y., Zichichi, A., Amelung, C., Bornheim, A., Brock, I., Coböken, K., Crittenden, J., Deffner, R., Eckert, M., Grothe, M., Hartmann, H., Heinloth, K., Heinz, L., Hilger, E., Jakob, H. -P, Kappes, A., Katz, U. F., Kerger, R., Paul, E., Pfeiffer, M., Stamm, J., Wieber, H., Bailey, D. S., Campbell-Robson, S., Cottingham, W. N., Foster, B., Hall-Wilton, R., Heath, G. P., Heath, H. F., Mcfall, J. D., Piccioni, D., Roff, D. G., Tapper, R. J., Capua, M., Iannotti, L., Schioppa, M., Susinno, G., Kim, J. Y., Lee, J. H., Lim, I. T., Pac, M. Y., Caldwell, A., Cartiglia, N., Jing, Z., Liu, W., Mellado, B., Parsons, J. A., Ritz, S., Sampson, S., Sciulli, F., Straub, P. B., Zhu, Q., Borzemski, P., Chwastowski, J., Eskreys, A., Figiel, J., Klimek, K., Przybycień, M. B., Zawiejski, L., Adamczyk, L., Bednarek, B., Bukowy, M., Czermak, A. M., Jeleń, K., Kisielewska, D., Kowalski, T., Przybycień, M., Rulikowska-Zarebska, E., Suszycki, L., Zajac, J., Duliński, Z., Kotański, A., Abbiendi, G., Bauerdick, L. A. T., Behrens, U., Beier, H., Bienlein, J. K., Desler, K., Drews, G., Fricke, U., Gialas, I., Goebel, F., Göttlicher, P., Graciani, R., Haas, T., Hain, W., Hartner, G. F., Hasell, D., Hebbel, K., Johnson, K. F., Kasemann, M., Koch, W., Kötz, U., Kowalski, H., Lindemann, L., Löhr, B., Martínez, M., Miiewski, J., Milite, M., Monteiro, T., Notz, D., Pellegrino, A., Pelucchi, F., Piotrzkowski, K., Rohde, M., Roldán, J., Ryan, J. J., Saull, P. R. B., Savin, A. A., Schneekloth, U., Schwarzer, O., Selonke, F., Stonjek, S., Surrow, B., Tassi, E., Westphal, D., Wolf, G., Wollmer, U., Youngman, C., Zeuner, W., Burow, B. D., Coldewey, C., Grabosch, H. J., Meyer, A., Schlenstedt, S., Barbagli, G., Gallo, E., Pelfer, P., Maccarrone, G., Votano, L., Bamberger, A., Eisenhardt, S., Markun, P., Raach, H., Trefzger, T., Wölfle, S., Bromley, J. T., Brook, N. H., Bussey, P. J., Doyle, A. T., Lee, S. W., Macdonald, N., Mccance, G. J., Saxon, D. H., Sinclair, L. E., Skillicorn, I. O., Strickland, E., Waugh, R., Bohnet, I., Gendner, N., Holm, U., Meyer-Larsen, A., Salehi, H., Wick, K., Garfagnini, A., Gladilin, L. K., Kçira, D., Klanner, R., Lohrmann, E., Poelz, G., Zetsche, F., Bacon, T. C., Butterworth, I., Cole, J. E., Howell, G., Lamberti, L., Long, K. R., Miller, D. B., Pavel, N., Prinias, A., Sedgbeer, J. K., Sideris, D., Walker, R., Mallik, U., Wang, S. M., Wu, J. T., Cloth, P., Filges, D., Fleck, J. I., Ishii, T., Kuze, M., Suzuki, I., Tokushuku, K., Yamada, S., Yamauchi, K., Yamazaki, Y., Hong, S. J., Lee, S. B., Nam, S. W., Park, S. K., Lim, H., Park, I. H., Son, D., Barreiro, F., Fernández, J. P., García, G., Glassnan, C., Hernández, J. M., Hervás, L., Labarga, L., Del Peso, J., Puga, J., Terron, J., Trocóniz, J. F., Corriveau, F., Hanna, D. S., Hartmann, J., Hung, L. W., Murray, W. N., Ochs, A., Riveline, M., Stairs, D. G., St-Laurent, M., Ullmann, R., Tsurugai, T., Bashkirov, V., Dolgoshein, B. A., Stifutkin, A., Bashindzhagyan, G. L., Ermolov, P. F., Golubkov, Y. A., Khein, L. A., Korotkova, N. A., Korzhavina, I. A., Kuzmin, V. A., Lukina, O. Y., Proskuryakov, A. S., Shcheglova, L. M., Solomin, A. N., Zotkin, S. A., Bokel, C., Botje, M., Brümmer, N., Engelen, J., Koffeman, E., Kooijman, P., Sighem, A., Tiecke, H., Tuning, N., Verkerke, W., Vossebeld, J., Wiggers, L., Wolf, E., Acosta, D., Bylsma, B., Durkin, L. S., Gilmore, J., Ginsburg, C. M., Kim, C. L., Ling, T. Y., Nylander, P., Romanowski, T. A., Blaikley, H. E., Cashmore, R. J., Cooper-Sarkar, A. M., Devenish, R. C. E., Edmonds, J. K., Groóße-Knetter, J., Harnew, N., Nath, C., Noyes, V. A., Quadt, A., Ruske, O., Tickner, J. R., Walczak, R., Waters, D. S., Bertolin, A., Brugnera, R., Carlin, R., Dal Corso, F., Dosselli, U., Limentani, S., Morandin, M., Posocco, M., Stanco, L., Stroili, R., Voci, C., Bulmahn, J., Oh, B. Y., Okrasiński, J. R., Toothacker, W. S., Whitmore, J. J., Iga, Y., D Agostini, G., Marini, G., Nigro, A., Raso, M., Hart, J. C., Mccubbin, N. A., Shah, T. P., Epperson, D., Heusch, C., Rahn, J. T., Sadrozinski, H. F. -W, Seiden, A., Wichmann, R., Williams, D. C., Abramowicz, H., Briskin, G., Dagan, S., Kananov, S., Levy, A., Abe, T., Fusayasu, T., Inuzuka, M., Nagano, K., Umemori, K., Yamashita, T., Hamatsu, R., Hirose, T., Homma, K., Kitamura, S., Matsushita, T., Arneodo, M., Cirio, R., Costa, M., Ferrero, M. I., Maselli, S., Monaco, V., Peroni, C., Petrucci, M. C., Ruspa, M., Sacchi, R., Solano, A., Staiano, A., Dardo, M., Bailey, D. C., Fagerstroem, C. -P, Galea, R., Joo, K. K., Levman, G. M., Martin, J. F., Orr, R. S., Polenz, S., Sabetfakhri, A., Simmons, D., Butterworth, J. M., Catterall, C. D., Hayes, M. E., Jones, T. W., Lane, J. B., Saunders, R. L., Sutton, M. R., Wing, M., Ciborowski, J., Grzelak, G., Kasprzak, M., Nowak, R. J., Pawlak, J. M., Pawlak, R., Smalska, B., Tymieniecka, T., Wróblewski, A. K., Zakrzewski, J. A., Zarnecki, A. F., Adamus, M., Deppe, O., Eisenberg, Y., Hochman, D., Karshon, U., Badgett, W. F., Chapin, D., Cross, R., Dasu, S., Foudas, C., Loveless, R. J., Mattingly, S., Reeder, D. D., Smith, W. H., Vaiciulis, A., Wodarczyk, M., Deshpande, A., Dhawan, S., Hughes, V. W., Bhadra, S., Frisken, W. R., Khakzad, M., and Schmidke, W. B.
Subjects: Nuclear and High Energy Physics, Stop squark, Particle physics, MONTE-CARLO GENERATOR, FOS: Physical sciences, ENERGY EP COLLISIONS, 01 natural sciences, JET FRAGMENTATION, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), E(+)E(-) COLLISIONS, EVENT GENERATOR, 0103 physical sciences, SUPERGRAVITY, 010306 general physics, SUPERSYMMETRY, Physics, E+E-PHYSICS, 010308 nuclear & particles physics, Branching fraction, High Energy Physics::Phenomenology, ZEUS, PARTON DISTRIBUTIONS, MODEL, Superpartner, HERA, Supersymmetry, Selectron tube, Neutralino, High Energy Physics::Experiment, Minimal Supersymmetric Standard Model
Abstract: We have searched for the production of a selectron and a squark in $e^+p$ collisions at a center-of-mass energy of 300 GeV using the ZEUS detector at HERA. The selectron and squark are sought in the direct decay into the lightest neutralino in the framework of supersymmetric extensions to the Standard Model which conserve R-parity. No evidence for the production of supersymmetric particles has been found in a data sample corresponding to 46.6~pb$^{-1}$ of integrated luminosity. We express upper limits on the product of the cross section times the decay branching ratios as excluded regions in the parameter space of the Minimal Supersymmetric Standard Model., 22 pages including 4 figures
Published: 1998

7. Measurement of inelastic J/psi photoproduction at HERA

Author: Breitweg, J., Derrick, M., Krakauer, D., Magill, S., Mikunas, D., Musgrave, B., Repond, J., Stanek, R., Talaga, R. L., Yoshida, R., Zhang, H., M. C. K., Anselmo, F., Antonioli, P., Bari, G., Basile, M., Bellagamba, L., Boscherini, D., Bruni, A., Bruni, G., Romeo, G. C., Castellini, G., Cifarelli, L., Cindolo, F., Contin, A., Corradi, M., Pasquale, S. D., Gialas, I., Giusti, P., Iacobucci, G., Laurenti, G., Levi, G., Margotti, A., Massam, T., Nania, R., Palmonari, F., Pesci, A., Polini, A., Ricci, F., Sartorelli, G., Garcia, Y. Z., Zichichi, A., Amelung, C., Bornheim, A., Brock, I., Coboken, K., Crittenden, J., Deffner, R., Eckert, M., Grothe, M., Hartmann, H., Heinloth, K., Heinz, L., Hilger, E., Jakob, H. P., Katz, U. F., Kerger, R., Paul, E., Pfeiffer, M., Rembser, C., Stamm, J., Wedemeyer, R., Wieber, H., Bailey, D. S., Campbell Robson, S., Cottingham, W. N., Foster, B., Hall Wilton, R., Hayes, M. E., Heath, G. P., Heath, H. F., Piccioni, D., Roff, D. G., Tapper, R. J., Ameodo, M., Ayad, R., Capua, M., Garfagnini, A., Iannotti, L., Schioppa, M., Susinno, G., Kim, J. Y., Lee, J. H., Lim, I. T., Pac, M. Y., Caldwell, A., Cartiglia, N., Jing, Z., Liu, W., Mellado, B., Parsons, J. A., Ritz, S., Sampson, S., Sciulli, F., Straub, P. B., Zhu, Q., Borzemski, P., Chwastowski, J., Eskreys, A., Jakubowski, Z., Przybycien, M. B., Zachara, M., Zawiejski, L., Adamczyk, L., Bednarek, B., Bukowy, M., Jelen, K., Kisielewska, D., Kowalski, T., Przybycien, M., Rulikowska Zarebska, E., Suszycki, L., Zajac, J., Dulinski, Z., Kotanski, A., Abbiendi, G., L. A. T., Behrens, U., Beier, H., Bienlein, J. K., Cases, G., Deppe, O., Desler, K., Drews, G., Fricke, U., Gilkinson, D. J., Glasman, C., Gottlicher, P., Grosse Knetter, J., Haas, T., Hain, W., Hasell, D., Johnson, K. F., Kasemann, M., Koch, W., Kotz, U., Kowalski, H., Labs, J., Lindemann, L., Lohr, B., Lowe, M., Manczak, O., Milewski, J., Monteiro, T., J. S. T., Notz, D., Ohrenberg, K., Park, I. H., Pellegrino, A., Pelucchi, F., Piotrzkowski, K., Roco, M., Rohde, M., Roldan, J., Ryan, J. J., Savin, A. A., Schneekloth, U., Selonke, F., Surrow, B., Tassi, E., Voss, T., Westphal, D., Wolf, G., Wollmer, U., Youngman, C., Zarnecki, A. F., Zeuner, W., Burow, B. D., Grabosch, H. J., Meyer, A., Schlenstedt, S., Barbagli, G., Gallo, E., Pelfer, P., Maccarrone, G., Votano, L., Bamberger, A., Eisenhardt, S., Markun, P., Trefzger, T., Wolfle, S., Bromley, J. T., Brook, N. H., Bussey, P. J., Doyle, A. T., Saxon, D. H., Sinclair, L. E., Strickland, E., Utley, M. L., Waugh, R., Wilson, A. S., Bohnet, I., Gendner, N., Holm, U., Meyer Larsen, A., Salehi, H., Wick, K., Gladilin, L. K., Horstmann, D., Kcira, D., Klanner, R., Lohrmann, E., Poelz, G., Schott, W., Zetsche, F., Bacon, T. C., T. C. B., Cole, J. E., Harris, V. L., Howell, G., B. H. Y., Lamberti, L., Long, K. R., Miller, D. B., Pavel, N., Prinias, A., Sedgbeer, J. K., Sideris, D., Whitfield, A. F., Mallik, U., Wang, S. M., J. T., Wu, Cloth, P., Filges, D., Fleck, J. I., Ishii, T., Kuze, M., Nakao, M., Tokushuku, K., Yamada, S., Yamazaki, Y., S. H., An, Lee, S. B., Nam, S. W., Park, H. S., Park, S. K., Barreiro, F., Fernandez, J. P., Garcia, G., Graciani, R., Hernandez, J. M., Hervas, L., Labarga, L., Martinez, M., Peso, J. d., Puga, J., Terron, J., J. F., De, Corriveau, F., Hanna, D. S., Hartmann, J., Hung, L. W., Lim, J. N., Murray, W. N., Ochs, A., Riveline, M., Stairs, D. G., St Laurent, M., Ullmann, R., Tsurugai, T., Bashkirov, V., Dolgoshein, B. A., Stifutkin, A., Bashindzhagyan, G. L., Ermolov, P. F., Golubkov, Y. A., Khein, L. A., Korotkova, N. A., Korzhavina, I. A., Kuzmin, V. A., Lukina, O. Y., Proskuryakov, A. S., Shcheglova, L. M., Solomin, A. N., Zotkin, S. A., Bokel, C., Botje, M., Brummer, N., Chlebana, F., Engelen, J., Kooijman, P., Sighem, A. v., Tiecke, H., Tuning, N., Verkerke, W., Vossebeld, J., Vreeswijk, M., Wiggers, L., Wolf, E. d., Acosta, D., Bylsma, B., Durkin, L. S., Gilmore, J., Ginsburg, C. M., Kim, C. L., Ling, T. Y., Nylander, P., Romanowski, T. A., Blaikley, H. E., Cashmore, R. J., Cooper Sarkar, A. M., R. C. E., Edmonds, J. K., Harnew, N., Lancaster, M., Mcfall, J. D., Nath, C., Noyes, V. A., Quadt, A., Ruske, O., Tickner, J. R., Uijterwaal, H., Walczak, R., Waters, D. S., Bertolin, A., Brugnera, R., Carlin, R., Corso, F. D., Giorgi, M. D., Dosselli, U., Limentani, S., Morandin, M., Posocco, M., Stanco, L., Stroili, R., Voci, C., Zuin, F., Bulmahn, J., Feild, R. G., B. Y., Oh, Okrasinski, J. R., Whitmore, J. J., Iga, Y., D'Agostini, G., Marini, G., Nigro, A., Raso, M., Hart, J. C., Mccubbin, N. A., Shah, T. P., Epperson, D., Heusch, C., Rahn, J. T., H. F. W., Seiden, A., Williams, D. C., Schwarzer, O., Walenta, A. H., Abramowicz, H., Briskin, G., Dagan, S., Kananov, S., Levy, A., Abe, T., Fusayasu, T., Inuzuka, M., Nagano, K., Suzuki, I., Umemori, K., Yamashita, T., Hamatsu, R., Hirose, T., Homma, K., Kitamura, S., Matsushita, T., Yamauchi, K., Cirio, Roberto, Costa, Marco, Ferrero, M. I., Maselli, S., Monaco, Vincenzo, Peroni, Cristiana, Petrucci, M. C., Sacchi, Roberto, Solano, Ada Maria, Stiano, A., Dardo, M., Bailey, D. C., Brkic, M., Fagerstroem, C. P., Hartner, G. F., Joo, K. K., Levman, G. M., Martin, J. F., Orr, R. S., Polenz, S., Sampson, C. R., Simmons, D., Teuscher, R. J., Butterworth, J. M., Catterall, C. D., Jones, T. W., Kaziewicz, P. B., Lane, J. B., Saunders, R. L., Shulman, J., Sutton, M. R., Lu, B., L. W., Mo, Ciborowski, J., Grzelak, G., Kasprzak, M., Muchorowski, K., Nowak, R. J., Pawlak, J. M., Pawlak, R., Tymieniecka, T., Wroblewski, A. K., Zakrzewski, J. A., Adamus, M., Coldewey, C., Eisenberg, Y., Hochman, D., Karshon, U., Revel, D., Badgett, W. F., Chapin, D., Cross, R., Dasu, S., Foudas, C., Loveless, R. J., Mattingly, S., Reeder, D. D., Smith, W. H., Vaiciulis, A., Wodarczyk, M., Bhadra, S., Frisken, W. R., Khakzad, M., Schmidke, W. B., and Zeus (IHEF, IoP, FNWI)
Subjects: GLUON DISTRIBUTION, Particle physics, STRUCTURE-FUNCTION F-2(X, Physics and Astronomy (miscellaneous), Proton, LUND MONTE-CARLO, FOS: Physical sciences, PROTON, 7. Clean energy, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, QCD ANALYSIS, Nuclear Experiment, 010306 general physics, Physics, ZEUS (particle detector), CONSTRUCTION, Q(2)), 010308 nuclear & particles physics, High Energy Physics::Phenomenology, ZEUS, ZEUS BARREL CALORIMETER, HERA, J-PSI, CENTRAL TRACKING DETECTOR, PARTON DISTRIBUTIONS, High Energy Physics::Experiment
Abstract: We present a measurement of the inelastic, non diffractive J/$\psi$ photoproduction cross section in the reaction $e^{+} p \to e^{+} {J}/\psi X$ with the ZEUS detector at HERA. The J/$\psi$ was identified using both the $\mu^{+}\mu^{-}$ and $e^{+}e^{-}$ decay channels and events were selected within the range $0.4 1$ GeV$^2$, NLO calculations of the photon-gluon fusion process based on the colour-singlet model are in good agreement with the data. The predictions of a specific leading order colour-octet model, as formulated to describe the CDF data on J/$\psi$ hadroproduction, are not consistent with the data., Comment: 31 pages including 7 figures
Published: 1997

8. Study of photon dissociation in diffractive photoproduction at HERA

Author: Breitweg, J., Derrick, M., Krakauer, D., Magill, S., Mikunas, D., Musgrave, B., Repond, J., Stanek, R., Talaga, R. L., Yoshida, R., Zhang, H., Mattingly, M. C. K., Anselmo, F., Antonioli, P., Bari, G., Basile, M., Bellagamba, L., Boscherini, D., Bruni, A., Bruni, G., Cara Romeo, G., Castellini, G., Cifarelli, L., Cindolo, F., Contin, A., Corradi, M., Pasquale, S., Gialas, I., Giusti, P., Iacobucci, G., Laurenti, G., Levi, G., Margotti, A., Massam, T., Nania, R., Palmonari, F., Pesci, A., Polini, A., Sartorelli, G., Zamora Garcia, Y., Zichichi, A., Amelung, C., Bornheim, A., Brock, I., Coböken, K., Crittenden, J., Deffner, R., Ecken, M., Feld, L., Grothe, M., Hartmann, H., Heinloth, K., Heinz, L., Hilger, E., Jakob, H. -P, Katz, U. F., Paul, E., Pfeiffer, M., Rembser, Ch, Stamm, J., Wedemeyer, R., Bailey, D. S., Campbell-Robson, S., Cottingham, W. N., Foster, B., Hall-Wilton, R., Hayes, M. E., Heath, G. P., Heath, H. F., Piccioni, D., Roff, D. G., Tapper, R. J., Arneodo, M., Ayad, R., Capua, M., Garfagnini, A., Iannotti, L., Schioppa, M., Susinno, G., Kim, J. Y., Lee, J. H., Lim, I. T., Pac, M. Y., Caldwell, A., Cartiglia, N., Jing, Z., Liu, W., Parsons, J. A., Ritz, S., Sampson, S., Sciulli, F., Straub, P. B., Zhu, Q., Borzemski, P., Chwastowski, J., Eskreys, A., Jakubowski, Z., Przybycień, M. B., Zachara, M., Zawiejski, L., Adamczyk, L., Bednarek, B., Jelén, K., Kisielewska, D., Kowalski, T., Przybycień, M., Rulikowska-Zarȩbska, E., Suszycki, L., Zaja̧c, J., Duliński, Z., Kotański, A., Abbiendi, G., Bauerdick, L. A. T., Behrens, U., Beier, H., Bienlein, J. K., Cases, G., Deppe, O., Desler, K., Drews, G., Fricke, U., Gilkinson, D. J., Glasman, C., Göttlicher, P., Große-Kneller, J., Haas, T., Hain, W., Hasell, D., Heßling, H., Johnson, K. F., Kasemann, M., Koch, W., Kotz, U., Kowalski, H., Labs, J., Lindemann, L., Löhr, B., Löwe, M., Mainusch, J., Mańczak, O., Milewski, J., Monteiro, T., Ng, J. S. T., Notz, D., Ohrenberg, K., Park, I. H., Pellegrino, A., Pelucchi, F., Piotrzkowski, K., Roco, M., Rohde, M., Roldán, J., Ryan, J. J., Savin, A. A., Schneekloth, U., Schulz, W., Selonke, F., Surrow, B., Tassi, E., Voß, T., Weslphal, D., Wolf, G., Wollmer, U., Youngman, C., Zarnecki, A. F., Zeuner, W., Burow, B. D., Grabosch, H. J., Meyer, A., Schlenstedt, S., Barbagli, G., Gallo, E., Pelfer, P., Maccarrone, G., Votano, L., Bamberger, A., Eisenhardt, S., Markun, P., Trefzger, T., Wölfle, S., Bromley, J. T., Brook, N. H., Bussey, P. J., Doyle, A. T., Saxon, D. H., Sinclair, L. E., Strickland, E., Utley, M. L., Waugh, R., Wilson, A. S., Bohnet, I., Gendner, N., Holm, U., Meyer-Larsen, A., Salehi, H., Wick, K., Gladilin, L. K., Klanner, R., Lohrmann, E., Poelz, G., Schott, W., Zetsche, F., Bacon, T. C., Butterworth, I., Cole, J. E., Harris, V. L., Howell, G., Hung, B. H. Y., Lamberti, L., Long, K. R., Miller, D. B., Pavel, N., Prinias, A., Sedgbeer, J. K., Sideris, D., Whitfield, A. F., Mallik, U., Wang, S. M., Wu, J. T., Cloth, P., Filges, D., Fleck, J. I., Ishii, T., Kuze, M., Nakao, M., Tokushuku, K., Yamada, S., Yamazaki, Y., An, S. H., Lee, S. B., Nam, S. W., Park, H. S., Park, S. K., Barreiro, F., Fernandez, J. P., Graciani, R., Hernández, J. M., Hervás, L., Labarga, L., Martinez, M., Del Peso, J., Puga, J., Terron, J., Trocóniz, J. F., Corriveau, F., Hanna, D. S., Hartmann, J., Hung, L. W., Lim, J. N., Murray, W. N., Ochs, A., Riveline, M., Stairs, D. G., St-Laurent, M., Ullmann, R., Tsurugai, T., Bashkirov, V., Dolgoshein, B. A., Stifutkin, A., Bashindzhagyan, G. L., Ermolov, P. F., Golubkov, Yu A., Khein, L. A., Korotkova, N. A., Korzhavina, I. A., Kuzmin, V. A., Lukina, O. Yu, Proskuryakov, A. S., Shcheglova, L. M., Shumilin, A. V., Solomin, A. N., Zotkin, S. A., Bokel, C., Botje, M., Brümmer, N., Chlebana, F., Engelen, J., Kooijman, P., Kruse, A., Sighem, A., Tiecke, H., Verkerke, W., Vossebeld, J., Vreeswijk, M., Wiggers, L., Wolf, E., Acosta, D., Bylsma, B., Durkin, L. S., Gilmore, J., Ginsburg, C. M., Kim, C. L., Ling, T. Y., Nylander, P., Romanowski, T. A., Blaikley, H. E., Cashmore, R. J., Cooper-Sarkar, A. M., Devenish, R. C. E., Edmonds, J. K., Harnew, N., Mark Lancaster, Mcfall, J. D., Nath, C., Noyes, V. A., Quadt, A., Tickner, J. R., Uijterwaal, H., Walczak, R., Waters, D. S., Yip, T., Bertolin, A., Brugnera, R., Carlin, R., Dal Corso, F., Dosselli, U., Limentani, S., Morandin, M., Posocco, M., Stanco, L., Stroili, R., Voci, C., Bulmahn, J., Feild, R. G., Oh, B. Y., Okrasiński, J. R., Whitmore, J. J., Iga, Y., D Agostini, G., Marini, G., Nigro, A., Raso, M., Hart, J. C., Mccubbin, N. A., Shah, T. P., Barberis, E., Dubbs, T., Heusch, C., Hook, M., Lockman, W., Rahn, J. T., Sadrozinski, H. F. -W, Seiden, A., Williams, D. C., Schwarzer, O., Walenta, A. H., Abramowicz, H., Briskin, G., Dagan, S., Doeker, T., Kananov, S., Levy, A., Abe, T., Inuzuka, M., Nagano, K., Suzuki, I., Umemori, K., Hamatsu, R., Hirose, T., Homma, K., Kitamura, S., Matsushita, T., Yamauchi, K., Cirio, R., Costa, M., Ferrero, M. I., Maselli, S., Monaco, V., Peroni, C., Petrucci, M. C., Sacchi, R., Solano, A., Staiano, A., Dardo, M., Bailey, D. C., Brkic, M., Fagerstroem, C. -P, Hartner, G. F., Joo, K. K., Levman, G. M., Martin, J. F., Orr, R. S., Polenz, S., Sampson, C. R., Simmons, D., Teuscher, R. J., Butterworth, J. M., Catterall, C. D., Jones, T. W., Kaziewicz, P. B., Lane, J. B., Saunders, R. L., Shulman, J., Sutton, M. R., Lu, B., Mo, L. W., Ciborowski, J., Grzelak, G., Kasprzak, M., Muchorowski, K., Nowak, R. J., Pawlak, J. M., Pawlak, R., Tymieniecka, T., Wróblewski, A. K., Zakrzewski, J. A., Adamus, M., Coldewey, C., Eisenberg, Y., Hochman, D., Karshon, U., Revel, D., Badgett, W. F., Chapin, D., Cross, R., Dasu, S., Foudas, C., Loveless, R. J., Mattingly, S., Reeder, D. D., Smith, W. H., Vaiciulis, A., Wodarczyk, M., Bhadra, S., Frisken, W. R., Khakzad, M., Schmidke, W. B., and Zeus (IHEF, IoP, FNWI)
Subjects: Particle physics, Photon, Physics and Astronomy (miscellaneous), Proton, FOS: Physical sciences, 01 natural sciences, Dissociation (chemistry), High Energy Physics - Experiment, Pomeron, High Energy Physics - Experiment (hep-ex), MONTE-CARLO, 0103 physical sciences, DISTRIBUTIONS, 010306 general physics, Nuclear Experiment, Physics, ZEUS (particle detector), hep-ex, 010308 nuclear & particles physics, OF-MASS ENERGY, High Energy Physics::Phenomenology, ZEUS, ZEUS BARREL CALORIMETER, HERA, Nuclear & Particles Physics, Amplitude, HADRONIC PROCESSES, CROSS-SECTION, Mass spectrum, High Energy Physics::Experiment
Abstract: Diffractive dissociation of quasi-real photons at a photon-proton centre of mass energy of W ~ 200 GeV is studied with the ZEUS detector at HERA. The process under consideration is gamma p -> X N, where X is the diffractively dissociated photon system of mass M_X and N is either a proton or a nucleonic system with mass M_N < 2GeV. The cross section for this process in the interval 3 < M_X < 24 GeV relative to the total photoproduction cross section was measured to be sigma^partial_D / sigma_tot = 6.2 +- 0.2(stat) +- 1.4(syst)%. After extrapolating this result to the mass interval of m_phi^2 < M_X^2 < 0.05 W^2 and correcting it for proton dissociation, the fraction of the total cross section attributed to single diffractive photon dissociation, gamma p -> X p, is found to be sigma_SD / sigma_tot = 13.3 +- 0.5(stat) +- 3.6(syst)%. The mass spectrum of the dissociated photon system in the interval 8 < M_X < 24 GeV can be described by the triple pomeron (PPP) diagram with an effective pomeron intercept of alpha_P(0) = 1.12 +- 0.04(stat) +- 0.08(syst). The cross section for photon dissociation in the range 3 < M_X < 8 GeV is significantly higher than that expected from the triple pomeron amplitude describing the region 8 < M_X < 24 GeV. Assuming that this discrepancy is due to a pomeron-pomeron-reggeon (PPR) term, its contribution to the diffractive cross section in the interval 3 < M_X < 24 GeV is estimated to be f_PPR = 26 +- 3(stat) +- 12(syst)%., 29 pages including 9 figures
Published: 1997

9. The ZEUS leading protoWospectrometer and its use in the measurement of elastic $\rho^{0}$ photoproduction at HERA

Author: Derrick, M, Krakauer, D, Magill, S, Mikunas, D, Musgrave, B, Okrasinski, JR, Repond, J, Stanek, R, Talaga, RL, Zhang, H, Mattingly, MCK, Anselmo, F, Antonioli, P, Bari, G, Basile, M, Bellagamba, L, Boscherini, D, Bruni, A, Bruni, G, Bruni, P, Romeo, GC, Castellini, G, Chiarini, M, Cifarelli, L, Cindolo, F, Contin, A, Corradi, M, Gialas, I, Giusti, P, Iacobucci, G, Laurenti, G, Levi, G, Margotti, A, Massam, T, Nania, R, Nemoz, C, Palmonari, F, Pesci, A, Polini, A, Sartorelli, G, Garcia, YZ, Zichichi, A, Amelung, C, Bornheim, A, Crittenden, J, Deffner, R, Eckert, M, Feld, L, Frey, A, Geerts, M, Grothe, M, Hartmann, H, Heinloth, K, Heinz, L, Hilger, E, Jakob, HP, Katz, UF, Mengel, S, Paul, E, Pfeiffer, M, Rembser, C, Schramm, D, Stamm, J, Wedemeyer, R, CampbellRobson, S, Cassidy, A, Cottingham, WN, Dyce, N, Foster, B, George, S, Hayes, ME, Heath, GP, Heath, HF, Piccioni, D, Roff, DG, Tapper, RJ, Yoshida, R, Arneodo, M, Ayad, R, Capua, M, Garfagnini, A, Iannotti, L, Schioppa, M, Susinno, G, Caldwell, A, Cartiglia, N, Jing, Z, Liu, W, Parsons, JA, Ritz, S, Sciulli, F, Straub, PB, Wai, L, Yang, S, Zhu, Q, Borzemski, P, Chwastowski, J, Eskreys, A, Jakubowski, Z, Przybycien, MB, Zachara, M, Zawiejski, L, Adamczyk, L, Bednarek, B, Jelen, K, Kisielewska, D, Kowalski, T, Przybycien, M, RulikowskaZarebska, E, Suszycki, L, Zajac, J, Dulinski, Z, Kotanski, A, Abbiendi, G, Bauerdick, LAT, Behrens, U, Beier, H, Bienlein, JK, Cases, G, Deppe, O, Desler, K, Drews, G, Flasinski, M, Gilkinson, DJ, Glasman, C, Gottlicher, P, GrosseKnetter, J, Haas, T, Hain, W, Hasell, D, Hessling, H, Iga, Y, Johnson, KF, Joos, P, Kasemann, M, Klanner, R, Koch, W, Kotz, U, Kowalski, H, Labs, J, Ladage, A, Lohr, B, Lowe, M, Luke, D, Mainusch, J, Manczak, O, Milewski, J, Monteiro, T, Ng, JST, Notz, D, Ohrenberg, K, Piotrzkowski, K, Roco, M, Rohde, M, Roldan, J, Schneekloth, U, Schulz, W, Selonke, F, Surrow, B, Tassi, E, Voss, T, Westphal, D, Wolf, G, Wollmer, U, Youngman, C, Zeuner, W, Grabosch, HJ, Mari, SM, Meyer, A, Schlenstedt, S, Barbagli, G, Gallo, E, Pelfer, P, Anzivino, G, Maccarrone, G, DePasquale, S, Votano, L, Bamberger, A, Eisenhardt, S, Trefzger, T, Wolfle, S, Bromley, JT, Brook, NH, Bussey, PJ, Doyle, AT, Saxon, DH, Sinclair, LE, Strickland, E, Utley, ML, Waugh, R, Wilson, AS, Dannemann, A, Holm, U, Horstmann, D, Sinkus, R, Wick, K, Burow, BD, Hagge, L, Lohrmann, E, Poelz, G, Schott, W, Zetsche, F, Bacon, TC, Brummer, N, Butterworth, I, Harris, VL, Howell, G, Hung, BHY, Lamberti, L, Long, KR, Miller, DB, Pavel, N, Prinias, A, Sedgbeer, JK, Sideris, D, Whitfield, AF, Mallik, U, Wang, MZ, Wang, SM, Wu, JT, Cloth, P, Filges, D, An, SH, Cho, GH, Ko, BJ, Lee, SB, Nam, SW, Park, HS, Park, SK, Kim, HJ, McNeil, RR, Metcalf, W, Nadendla, VK, Barreiro, F, Fernandez, JP, Graciani, R, Hernandez, JM, Hervas, L, Labarga, L, Martinez, M, delPeso, J, Puga, J, Terron, J, deTroconiz, JF, Corriveau, F, Hanna, DS, Hartmann, J, Hung, LW, Lim, JN, Matthews, CG, Murray, WN, Ochs, A, Patel, PM, Riveline, M, Stairs, DG, StLaurent, M, Ullmann, R, Zacek, G, Tsurugai, T, Bashkirov, V, Dolgoshein, BA, Stifutkin, A, Bashindzhagyan, GL, Ermolov, PF, Gladilin, LK, Golubkov, YA, Kobrin, VD, Korzhavina, IA, Kuzmin, VA, Lukina, OY, Proskuryakov, AS, Savin, AA, Shcheglova, LM, Solomin, AN, Zotov, NP, Botje, M, Chlebana, F, Engelen, J, deKamps, M, Kooijman, P, Kruse, A, vanSighem, A, Tiecke, H, Verkerke, W, Vossebeld, J, Vreeswijk, M, Wiggers, L, deWolf, E, vanWoudenberg, R, Acosta, D, Bylsma, B, Durkin, LS, Gilmore, J, Ginsburg, CM, Kim, CL, Li, C, Ling, TY, Nylander, P, Park, IH, Romanowski, TA, Cashmore, RJ, CooperSarkar, AM, Devenish, RCE, Harnew, N, Lancaster, M, Lindemann, L, McFall, JD, Nath, C, Noyes, VA, Quadt, A, Tickner, JR, Uijterwaal, H, Walczak, R, Waters, DS, Wilson, FF, Yip, T, Bertolin, A, Brugnera, R, Carlin, R, DalCorso, F, DeGiorgi, M, Dosselli, U, Limentani, S, Morandin, M, Posocco, M, Stanco, L, Stroili, R, Voci, C, Zuin, F, Bulmahn, J, Feild, RG, Oh, BY, Whitmore, JJ, DAgostini, G, Marini, G, Nigro, A, Hart, JC, McCubbin, NA, Shah, TP, Barberis, E, Dubbs, T, Heusch, C, VanHook, M, Lockman, W, Rahn, JT, Sadrozinski, HFW, Seiden, A, Williams, DC, Biltzinger, J, Seifert, RJ, Schwarzer, O, Walenta, AH, Abramowicz, H, Briskin, G, Dagan, S, Doeker, T, Levy, A, Fleck, JI, Inuzuka, M, Ishii, T, Kuze, M, Mine, S, Nakao, M, Suzuki, I, Tokushuku, K, Umemori, K, Yamada, S, Yamazaki, Y, Chiba, M, Hamatsu, R, Hirose, T, Homma, K, Kitamura, S, Matsushita, T, Yamauchi, K, Cirio, R, Costa, M, Ferrero, MI, Maselli, S, Peroni, C, Sacchi, R, Solano, A, Staiano, A, Dardo, M, Bailey, DC, Benard, F, Brkic, M, Fagerstroem, CP, Hartner, GF, Joo, KK, Levman, GM, Martin, JF, Orr, RS, Polenz, S, Sampson, CR, Simmons, D, Teuscher, RJ, Butterworth, JM, Catterall, CD, Jones, TW, Kaziewicz, PB, Lane, JB, Saunders, RL, Shulman, J, Sutton, MR, Lu, B, Mo, LW, Bogusz, W, Ciborowski, J, Gajewski, J, Grzelak, G, Kasprzak, M, Krzyzanowski, M, Muchorowski, K, Nowak, RJ, Pawlak, JM, Tymieniecka, T, Wroblewski, AK, Zakrzewski, JA, Zarnecki, AF, Adamus, M, Coldewey, C, Eisenberg, Y, Hochman, D, Karshon, U, Revel, D, ZerZion, D, Badgett, WF, Breitweg, J, Chapin, D, Cross, R, Dasu, S, Foudas, C, Loveless, RJ, Mattingly, S, Reeder, DD, Silverstein, S, Smith, WH, Vaiciulis, A, Wodarczyk, M, Bhadra, S, Cardy, ML, Frisken, WR, Khakzad, M, Schmidke, WB, and Zeus (IHEF, IoP, FNWI)
Subjects: Particle physics, Photon, ZEUS, LARGE RAPIDITY GAP, DEEP-INELASTIC SCATTERING, CENTRAL TRACKING DETECTOR, DIFFRACTION DISSOCIATION, BARREL CALORIMETER, VERTEX DETECTOR, EVENTS, PHOTON, Physics and Astronomy (miscellaneous), Meson, Proton, Nuclear Theory, 01 natural sciences, 7. Clean energy, Dissociation (chemistry), Nuclear physics, leading proton, 0103 physical sciences, photoproduction, diffractive dissociation, Nuclear Experiment, 010306 general physics, Physics, Spectrometer, 010308 nuclear & particles physics, HERA, Deep inelastic scattering, High Energy Physics::Experiment, Low Mass
Abstract: The differential cross section d sigma/dt for elastic rho(0) photoproduction, gamma p --> rho(0)p (rho(0) --> pi(+)pi(-)), has been measured in ep interactions at HERA. The squared four-momentum exchanged at the proton vertex, t, has been determined directly by measuring the momentum of the scattered proton using the ZEUS Leading Proton Spectrometer (LPS), a large scale system of silicon micro-strip detectors operating close to the HERA proton beam. The LPS allows the measurement of the momentum of high energy protons scattered at small angles with accuracies of 0.4% for the longitudinal momentum and 5 MeV for the transverse momentum. Photoproduction of rho(0) mesons has been investigated in the interval 0.073 < \t\ < 0.40 GeV2, for photon virtualities Q(2) < 1 GeV2 and photon-proton centre-of-mass energies W between 50 and 100 GeV. In the measured range, the t distribution exhibits an exponential shape with a slope parameter b = 9.8 +/- 0.8 (stat.) +/- 1.1 (syst.) GeV-2. The use of the LPS eliminates the contamination from events with diffractive dissociation of the proton into low mass states.
Published: 1997

10. A search for excited fermions in $e+p$ collisions at HERA

Author: Breitweg, J, Derrick, M, Krakauer, D, Magill, S, Mikunas, D, Musgrave, B, Repond, J, Stanek, R, Talaga, Rl, Yoshida, R, Zhang, H, Mattingly, Mck, Anselmo, F, Antonioli, P, Bari, G, Basile, M, Bellagamba, L, Boscherini, D, Bruni, A, Bruni, G, Romeo, Gc, Castellini, G, Cifarelli, L, Cindolo, F, Contin, A, Corradi, M, De Pasquale, S, Gialas, I, Giusti, P, Iacobucci, G, Laurenti, G, Levi, G, Margotti, A, Massam, T, Nania, R, Palmonari, F, Pesci, A, Polini, A, Ricci, F, Sartorelli, G, Garcia, Yz, Zichichi, A, Amelung, C, Bornheim, A, Brock, I, Coboken, K, Crittenden, J, Deffner, R, Eckert, M, Feld, L, Grothe, M, Hartmann, H, Heinloth, K, Heinz, L, Hilger, E, Jakob, Hp, Katz, Uf, Kerger, R, Paul, E, Pfeiffer, M, Rembser, C, Stamm, J, Wedemeyer, R, Wieber, H, Bailey, Ds, Campbell Robson, S, Cottingham, Wn, Foster, B, Hall Wilton, R, Hayes, Me, Heath, Gp, Heath, Hf, Piccioni, D, Roff, Dg, Tapper, Rj, Arneodo, M, Ayad, R, Capua, M, Garfagnini, Alberto, Iannotti, L, Schioppa, M, Susinno, G, Kim, Jy, Lee, Jh, Lim, It, Pac, My, Caldwell, A, Cartiglia, N, Jing, Z, Liu, W, Mellado, B, Parsons, Ja, Ritz, S, Sampson, S, Sciulli, F, Straub, Pb, Zhu, Q, Borzemski, P, Chwastowski, J, Eskreys, A, Jakubowski, Z, Przybycien, Mb, Zachara, M, Zawiejski, L, Adamczyk, L, Bednarek, B, Jelen, K, Kisielewska, D, Kowalski, T, Przybycien, M, Rulikowska Zarebska, E, Suszycki, L, Zajac, J, Dulinski, Z, Kotanski, A, Abbiendi, G, Bauerdick, Lat, Behrens, U, Beier, H, Bienlein, Jk, Cases, G, Deppe, O, Desler, K, Drews, G, Fricke, U, Gilkinson, Dj, Glasman, C, Gottlicher, P, Grosse Knetter, J, Haas, T, Hain, W, Hasell, D, Johnson, Kf, Kasemann, E, Koch, W, Kotz, U, Kowalski, H, Labs, J, Lindemann, L, Lohr, B, Lowe, M, Manczak, O, Milewsci, J, Monteiro, T, Jst, Ng, Notz, D, Ohrenberg, K, Parks, Ih, Pellegrino, A, Pelucchi, F, Piotrzkowski, K, Roco, M, Rohde, M, Roldan, J, Ryan, Jj, Savin, Aa, Schneekloth, U, Selonke, F, Surrow, B, Tassi, E, Voss, T, Westphal, D, Wolf, G, Wollmer, U, Youngman, C, Zarnecki, Af, Zeuner, W, Burow, Bd, Grabosch, Hj, Meyer, A, Schlenstedt, S, Barbagli, G, Gallo, E, Pelfer, P, Maccarrone, G, Votano, L, Bamberger, A, Eisenhardt, S, Markun, P, Trefzger, T, Wolfle, S, Bohnet, I, Brook, Nh, Bussey, Pj, Doyle, At, Saxon, Dh, Sinclair, Le, Strickland, E, Utley, Ml, Waugh, R, Wilson, As, Gendner, N, Holm, U, Meyer Larsen, A, Salehi, H, Wick, K, Gladilin, K, Horstmann, D, Kcira, D, Klanner, R, Lohrmann, E, Poelz, G, Schott, W, Zetsche, F, Bacon, Tc, Butterworth, I, Cole, Je, Harris, Vl, Howell, G, Hung, Bhy, Lamberti, L, Long, Kr, Miller, Db, Pavel, N, Prinias, A, Sedgbeer, Jk, Sideris, D, Whitfield, Af, Mallik, U, Wang, Sm, Wu, Jt, Cloth, P, Filges, D, Fleck, Ji, Ishii, T, Kuze, M, Nakao, M, Tokushuku, K, Yamada, S, Yamazaki, Y, An, Sh, Lee, Sb, Nam, Sw, Park, Hs, Park, Sk, Barreiro, F, Fernandez, Jp, Garcia, G, Graciani, R, Hernandez, Jm, Hervas, L, Labarga, L, Martinez, M, del Peso, J, Puga, J, Terron, J, de Troconiz JF, Corriveau, F, Hanna, Ds, Hartmann, J, Hung, Lw, Lim, Jn, Murray, Wn, Ochs, A, Riveline, M, Stairs, Dg, St Laurent, M, Ullmann, R, Tsurugai, T, Bashkirov, V, Dolgoshein, Ba, Stifutkin, A, Bashindzhagyan, Gl, Ermolov, Pf, Golubkov, Ya, Khein, La, Korotkova, Na, Korzhavina, Ia, Kuzmin, Va, Lukina, Oy, Proskuryakov, As, Shcheglova, Lm, Shumilin, Av, Solomin, An, Zotkin, Sa, Bokel, C, Botje, M, Brummer, N, Chlebana, F, Engelen, J, Kooijman, P, Kruse, A, van Sighem, A, Tiecke, H, Verkerke, W, Vossebeld, J, Vreeswijk, M, Wiggers, L, de Wolf, E, Acosta, D, Bylsma, B, Durkin, Ls, Gilmore, J, Ginsburg, Cm, Kim, Cl, Ling, Ty, Nylander, P, Romanowski, Ta, Blaikley, He, Cashmore, Rj, Cooper Sarkar AM, Devenish, Rce, Edmonds, Jk, Harnew, N, Lancaster, M, Mcfall, Jd, Nath, C, Noyes, Va, Quadt, A, Ruske, O, Tickner, Jr, Uijterwaal, H, Walczak, R, Waters, Ds, Bertolin, A, Brugnera, Riccardo, Carlin, Roberto, Dal Corso, F, Dosselli, U, Limentani, S, Morandin, M, Posocco, M, Stanco, L, Stroili, Roberto, Voci, C, Bulmahn, J, Feild, Rg, Oh, By, Okrasinski, Jr, Whitmore, Jj, Iga, Y, D'Agostini, G, Marini, G, Nigro, A, Raso, M, Hart, Jc, Mccubbin, Na, Shah, Tp, Epperson, D, Heusch, C, Rahn, Jt, Sadrozinski, Hfw, Seiden, A, Williams, Dc, Schwarzer, O, Walenta, Ah, Abramowicz, H, Briskin, G, Dagan, S, Doeker, T, Kananov, S, Levy, A, Abe, T, Fusayasu, T, Inuzuka, M, Nagano, K, Suzuki, I, Umemori, K, Yamashita, T, Hamatsu, R, Hirose, T, Homma, K, Kitamura, S, Matsushita, T, Yamauchi, K, Cirio, R, Costa, M, Ferrero, Mi, Maselli, S, Monaco, V, Peroni, C, Petrucci, Mc, Sacchi, R, Solano, A, Staiano, A, Dardo, M, Bailey, Dc, Brkic, M, Fagerstroem, Cp, Hartner, Gf, Joo, Kk, Levman, Gm, Martin, Jf, Orr, Rs, Polenz, S, Sampson, Cr, Simmons, D, Teuscher, Rj, Butterworth, Jm, Catterall, Cd, Jones, Tw, Kaziewicz, Pb, Lane, Jb, Saunders, Rl, Shulman, J, Sutton, Mr, Lu, B, Mo, Lw, Ciborowski, J, Grzelak, G, Kasprzak, M, Muchorowski, K, Nowak, Rj, Pawlak, Jm, Pawlak, R, Tymieniecka, T, Wroblewski, Ak, Zakrzewski, Ja, Adamus, M, Coldewey, C, Eisenberg, Y, Hochman, D, Karshon, U, Revel, D, Badgett, Wf, Chapin, D, Cross, R, Dasu, S, Foudas, C, Loveless, Rj, Mattingly, S, Reeder, D, Smith, Wh, Vaiciulis, A, Wodarczyk, M, Bhadra, S, Frisken, Wr, Khakzad, M, Schmidke, Wb, and Zeus (IHEF, IoP, FNWI)
Subjects: Quark, Particle physics, Physics and Astronomy (miscellaneous), Astrophysics::High Energy Astrophysical Phenomena, LEPTON PRODUCTION, P(P)OVER-BAR COLLISIONS, FOS: Physical sciences, 01 natural sciences, 7. Clean energy, High Energy Physics - Experiment, Nuclear physics, EVENTS, High Energy Physics - Experiment (hep-ex), MONTE-CARLO, DESIGN, 0103 physical sciences, 010306 general physics, Nuclear Experiment, ZEUS, CENTRAL TRACKING DETECTOR, ZEUS BARREL CALORIMETER, CONSTRUCTION, ELECTRON, COLLIDERS, Physics, ZEUS (particle detector), 010308 nuclear & particles physics, Branching fraction, Electroweak interaction, High Energy Physics::Phenomenology, Fermion, HERA, Excited state, High Energy Physics::Experiment, Neutrino
Abstract: Using the ZEUS detector at HERA, we have searched for heavy excited states of electrons, neutrinos, and quarks in $e^+p$ collisions at a center-of-mass energy of 300~GeV. With an integrated luminosity of 9.4~pb$^{-1}$, no evidence was found for electroweak production and decay of such states. Limits on the production cross section times branching ratio and on the characteristic couplings, $f/\Lambda$, are derived for masses up to 250~GeV. For the particular choice $f/\Lambda = 1/M_{f^*}$, we exclude at the 95% confidence level excited electrons with mass between 30 and 200~GeV, excited electron neutrinos with mass between 40 and 96~GeV, and quarks excited electroweakly with mass between 40 and 169~GeV., Comment: 39 pages including 11 figures
Published: 1997
Full Text: View/download PDF

11. Measurement of elastic J/psi photoproduction at HERA

Author: Breitweg, J, Derrick, M, Krakauer, D, Magill, S, Mikunas, D, Musgrave, B, Repond, J, Stanek, R, Talaga, RL, Yoshida, R, Zhang, H, Mattingly, MCK, Anselmo, F, Antonioli, P, Bari, G, Basile, M, Bellagamba, L, Boscherini, D, Bruni, A, Bruni, G, Romeo, GC, Castellini, G, Cifarelli, L, Cindolo, F, Contin, A, Corradi, M, DePasquale, S, Gialas, I, Giusti, P, Iacobucci, G, Laurenti, G, Levi, G, Margotti, A, Massam, T, Nania, R, Palmonari, F, Pesci, A, Polini, A, Sartorelli, G, Garcia, YZ, Zichichi, A, Amelung, C, Bornheim, A, Brock, I, Coboken, K, Crittenden, J, Deffner, R, Eckert, M, Feld, L, Grothe, M, Hartmann, H, Heinloth, K, Heinz, L, Hilger, E, Jakob, HP, Katz, UF, Paul, E, Pfeiffer, M, Rembser, C, Stamm, J, Wedemeyer, R, Bailey, DS, CampbellRobson, S, Cottingham, WN, Foster, B, HallWilton, R, Hayes, ME, Heath, GP, Heath, HF, Piccioni, D, Roff, DG, Tapper, RJ, Arneodo, M, Ayad, R, Capua, M, Garfagnini, A, Iannotti, L, Schioppa, M, Susinno, G, Kim, JY, Lee, JH, Lim, IT, Pac, MY, Caldwell, A, Cartiglia, N, Jing, Z, Liu, W, Parsons, JA, Ritz, S, Sampson, S, Sciulli, F, Straub, PB, Zhu, Q, Borzemski, P, Chwastowski, J, Eskreys, A, Jakubowski, Z, Przybycien, MB, Zachara, M, Zawiejski, L, Adamczyk, L, Bednarek, B, Jelen, K, Kisielewska, D, Kowalski, T, Przybycien, M, RulikowskaZarebska, E, Suszycki, L, Zajac, J, Dulinski, Z, Kotanski, A, Abbiendi, G, Bauerdick, LAT, Behrens, U, Beier, H, Bienlein, JK, Cases, G, Deppe, O, Desler, K, Drews, G, Fricke, U, Gilkinson, DJ, Glasman, C, Gottlicher, P, GrossKnetter, J, Haas, T, Hain, W, Hasell, D, Hessling, H, Johnson, KF, Kasemann, M, Koch, W, Kotz, U, Kowalski, H, Labs, J, Lindemann, L, Lohr, B, Lowe, M, Mainusch, J, Manczak, O, Milewski, J, Monteiro, T, Ng, JST, Notz, D, Ohrenberg, K, Park, IH, Pellegrino, A, Pelucchi, F, Piotrzkowski, K, Roco, M, Rohde, M, Roldan, J, Ryan, JJ, Savin, AA, Schneekloth, U, Schulz, W, Selonke, F, Surrow, B, Tassi, E, Voss, T, Westphal, D, Wolf, G, Wollmer, U, Youngman, C, Zarnecki, AF, Zeuner, W, Burrow, BD, Grabosch, HJ, Meyer, A, Schlenstedt, S, Barbagli, G, Gallo, E, Pelfer, P, Maccarrone, G, Votano, L, Bamberger, A, Eisenhardt, S, Markun, P, Trefzger, T, Wolfle, S, Bromley, JT, Brook, NH, Bussey, PJ, Doyel, AT, Saxon, DH, Sinclair, LE, Strickland, E, Utley, ML, Waugh, R, Wilson, AS, Bohnet, I, Gendner, N, Holm, U, MeyerLarsen, A, Salehi, H, Wick, K, Gladilin, LK, Klanner, R, Lohrmann, E, Poelz, G, Schott, W, Zetsche, F, Bacon, TC, Butterworth, I, Cole, JE, Harris, VL, Howell, G, Hung, BHY, Lamberti, L, Long, KR, Miller, DB, Pavel, N, Prinias, A, Sedgbeer, JK, Sideris, D, Whitfield, AF, Mallik, U, Wang, SM, Wu, JT, Cloth, P, Filges, D, Fleck, JI, Ishii, T, Kuze, M, Nakao, M, Tokushuku, K, Yamada, S, Yamazaki, Y, An, SH, Lee, SB, Nam, SW, Park, HS, Park, SK, Barreiro, F, Fernandez, JP, Graciani, R, Hernandez, JM, Hervas, L, Labarga, L, Martinez, M, delPeso, J, Puga, J, Terron, J, deTroconiz, JF, Corriveau, F, Hanna, DS, Hartmann, J, Hung, LW, Lim, JN, Murray, WN, Ochs, A, Riveline, M, Stairs, DG, StLaurent, M, Ullmann, R, Tsurugai, T, Bashkirov, V, Dolgoshein, BA, Stifutkin, A, Bashindzhagyan, GL, Ermolov, PF, Golubkov, YA, Khein, LA, Korotkova, NA, Korzhavina, IA, Kuzmin, VA, Lukina, OY, Proskuryakov, AS, Shcheglova, LM, Shumilin, AV, Solomin, AN, Zotkin, SA, Bokel, C, Botje, M, Brummer, N, Chlebana, F, Engelen, J, Kooijman, P, Kruse, A, vanSighem, A, Tiecke, H, Verkerke, W, Vossebeld, J, Vreeswijk, M, Wiggers, L, deWolf, E, Acosta, D, Bylsma, B, Durkin, LS, Gilmore, J, Ginsburg, CM, Kim, CL, Ling, TY, Nylander, P, Romanowski, TA, Blaikley, HE, Cashmore, RJ, CooperSarkar, AM, Devenish, RCE, Edmonds, JK, Harnew, N, Lancaster, M, McFall, JD, Nath, C, Noyes, VA, Quadt, A, Tickner, JR, Uijterwaal, H, Walczak, R, Waters, DS, Yip, T, Bertolin, A, Brugnera, R, Carlin, R, DalCorso, F, DeGiorgi, M, Dosselli, U, Limentani, S, Morandin, M, Posocco, M, Stanco, L, Stroili, R, Voci, C, Zuin, F, Bulmahn, J, Feild, RG, Oh, BY, Okrasinski, JR, Whitmore, JJ, Iga, Y, DAgostini, G, Marini, G, Nigro, A, Raso, M, Hart, JC, McCubbin, NA, Shah, TP, Barberis, E, Dubbs, T, Heusch, C, VanHook, M, Lockman, W, Rahn, JT, Sadrozinski, HFW, Seiden, A, Williams, DC, Schwarzer, O, Walenta, AH, Abramowicz, H, Briskin, G, Dagan, S, Doeker, T, Kananov, S, Levy, A, Abe, T, Inuzuka, M, Nagano, K, Suzuki, I, Umemori, K, Hamatsu, R, Hirose, T, Homma, K, Kitamura, S, Matsushita, T, Yamauchi, K, Cirio, R, Costa, M, Ferrero, MI, Maselli, S, Monaco, V, Peroni, C, Petrucci, MC, Sacchi, R, Solano, A, Staiano, A, Dardo, M, Bailey, DC, Brkic, M, Fagerstroem, CP, Hartner, GF, Joo, KK, Levman, GM, Martin, JF, Orr, RS, Polenz, S, Sampson, CR, Simmons, D, Teuscher, RJ, Butterworth, JM, Catterall, CD, Jones, TW, Kaziewicz, PB, Lane, JB, Saunders, RL, Shulman, J, Sutton, MR, Lu, B, Mo, LW, Ciborowski, J, Grzelak, G, Kasprzak, M, Muchorowski, K, Nowak, RJ, Pawlak, JM, Pawlak, R, Tymieniecka, T, Wroblewski, AK, Zakrzewski, JA, Adamus, M, Coldewey, C, Eisenberg, Y, Hochman, D, Karshon, U, Revel, D, Badgett, WF, Chapin, D, Cross, R, Dasu, S, Foudas, C, Loveless, RJ, Mattingly, S, Reeder, DD, Smith, WH, Vaiciulis, A, Wodarczyk, M, Bhadra, S, Frisken, WR, Khakzad, M, and Schmidke, WB
Subjects: Particle physics, Physics and Astronomy (miscellaneous), Proton, LUND MONTE-CARLO, PROTON, 7. Clean energy, 01 natural sciences, High Energy Physics - Experiment, ENERGY, Nuclear physics, 0103 physical sciences, SCATTERING, Nuclear Experiment, 010306 general physics, Physics, Muon, ZEUS (particle detector), 010308 nuclear & particles physics, Scattering, Sigma, ZEUS, ZEUS BARREL CALORIMETER, HERA, CENTRAL TRACKING DETECTOR, CROSS-SECTION, J/PSI, Helicity, Vertex (curve), High Energy Physics::Experiment
Abstract: The reaction gamma p -> J/Psi p has been studied in ep interactions using the ZEUS detector at HERA. The cross section for elastic J/Psi photoproduction has been measured as a function of the photon-proton centre of mass energy W in the range 40 < W < 140 GeV at a median photon virtuality Q^2 of 5*10^{-5} GeV^2. The photoproduction cross section, sigma_{gamma p -> J/Psi p}, is observed to rise steeply with W. A fit to the data presented in this paper to determine the parameter $\delta$ in the form sigma_{gamma p -> J/Psi p} \propto W^{\delta} yields the value \delta = 0.92 \pm 0.14 \pm 0.10. The differential cross section dsigma/d|t| is presented over the range |t| < 1.0 GeV^2 where t is the square of the four-momentum exchanged at the proton vertex. d\sigma/d|t| falls exponentially with a slope parameter of 4.6 \pm 0.4 (+0.4-0.6) GeV^{-2}. The measured decay angular distributions are consistent with s-channel helicity conservation., Comment: Replacement has an updated author list. 32 pages, 5 figures, Latex, Submitted to Z. Phys. C
Published: 1997

12. Measurement of Elastic omega Photoproduction at HERA

Author: Derrick, M, Krakauer, D, Magill, S, Mikunas, D, Musgrave, B, Okrasinski, J R, Repond, J, Stanek, R, Talaga, R L, Zhang, H, Mattingly, M C K, Anselmo, F, Antonioli, P, Bari, G, Basile, M, Bellagamba, L, Boscherini, D, Bruni, A, Bruni, G, Bruni, P, Romeo, G C, Castellini, G, Cifarelli, L, Cindolo, F, Contin, A, Corradi, M, Gialas, I, Giusti, P, Iacobucci, G, Laurenti, G, Levi, G, Margotti, A, Massam, T, Nania, R, Palmonari, F, Pesci, A, Polini, A, Sartorelli, G, Garcia, Y Z, Zichichi, A, Amelung, C, Bornheim, A, Crittenden, J, Deffner, R, Eckert, M, Feld, L, Frey, A, Geerts, M, Grothe, M, Hartmann, H, Heinloth, K, Heinz, L, Hilger, E, Jakob, H P, Katz, U F, Mengel, S, Paul, E, Pfeiffer, M, Rembser, C, Schramm, D, Stamm, J, Wedemeyer, R, CampbellRobson, S, Cassidy, A, Cottingham, W N, Dyce, N, Foster, B, George, Simon, Hayes, M E, Heath, G P, Heath, H F, Piccioni, D, Roff, D G, Tapper, R J, Yoshida, R, Arneodo, M, Ayad, R, Capua, M, Garfagnini, A, Iannotti, L, Schioppa, M, Susinno, G, Caldwell, A, Cartiglia, N, Jing, Z, Liu, W, Parsons, J A, Ritz, S, Sciulli, F, Straub, P B, Wai, L, Yang, S, Zhu, Q, Borzemski, P, Chwastowski, J, Eskreys, A, Jakubowski, Z, Przybycien, M B, Zachara, M, Zawiejski, L, Adamczyk, L, Bednarek, B, Jelen, K, Kisielewska, D, Kowalski, T, Przybycien, M, RulikowskaZarebska, E, Suszycki, L, Zajac, J, Dulinski, Z, Kotanski, A, Abbiendi, G, Bauerdick, L A T, Behrens, U, Beier, H, Bienlein, J K, Cases, G, Deppe, O, Desler, K, Drews, G, Flasinski, M, Gilkinson, D J, Glasman, C, Gottlicher, P, GrosseKnetter, J, Haas, T, Hain, W, Hasell, D, Hessling, H, Iga, Y, Johnson, K F, Joos, P, Kasemann, M, Klanner, R, Koch, W, Kotz, U, Kowalski, H, Labs, J, Ladage, A, Lohr, B, Lowe, M, Luke, D, Mainusch, J, Manczak, O, Milewski, J, Monteiro, T, Ng, J S T, Notz, D, Ohrenberg, K, Piotrzkowski, K, Roco, M, Rohde, M, Roldan, J, Schneekloth, U, Schulz, W, Selonke, F, Surrow, B, Tassi, E, Voss, T, Westphal, D, Wolf, G, Wollmer, U, Youngman, C, Zeuner, W, Grabosch, H J, Mari, S M, Meyer, A, Schlenstedt, S, Barbagli, G, Gallo, E, Pelfer, P, Maccarrone, G, DePasquale, S, Votano, L, Bamberger, A, Eisenhardt, S, Trefzger, T, Wolfle, S, Bromley, J T, Brook, N H, Bussey, P J, Doyle, A T, Saxon, D H, Sinclair, L E, Strickland, E, Utley, M L, Waugh, R, Wilson, A S, Dannemann, A, Holm, U, Horstmann, D, Sinkus, R, Wick, K, Burow, B D, Hagge, L, Lohrmann, E, Poelz, G, Schott, W, Zetsche, F, Bacon, T C, Brummer, N, Butterworth, I, Harris, V L, Howell, G, Hung, B H U, Lamberti, L, Long, K R, Miller, D B, Pavel, N, Prinias, A, Sedgbeer, J K, Sideris, D, Whitfield, A F, Mallik, U, Wang, M Z, Wang, S M, Wu, J T, Cloth, P, Filges, D, An, S H, Cho, G H, Ko, B J, Lee, S B, Nam, S W, Park, H S, Park, S K, Kartik, S, Kim, H J, McNeil, R R, Metcalf, W, Nadendla, V K, Barreiro, F, Fernandez, J P, Graciani, R, Hernandez, J M, Hervas, L, Labarga, L, Martinez, M, delPeso, J, Puga, J, Terron, J, deTroconiz, J F, Corriveau, F, Hanna, D S, Hartmann, J, Hung, L W, Lim, J N, Matthews, C G, Murray, W N, Ochs, A, Patel, P M, Riveline, M, Stairs, D G, StLaurent, M, Ullmann, R, Zacek, G, Tsurugai, T, Bashkirov, V, Dolgoshein, B A, Stifutkin, A, Bashindzhagyan, G L, Ermolov, P F, Gladilin, L K, Golubkov, Y A, Kobrin, V D, Korzhavina, L A, Kuzmin, V A, Lukina, O Y, Proskuryakov, A S, Savin, A A, Shcheglova, L M, Solomin, A N, Zotov, N P, Botje, M, Chlebana, F, Engelen, J, deKamps, M, Kooijman, P, Kruse, A, vanSighem, A, Tiecke, H, Verkerke, W, Vossebeld, J, Vreeswijk, M, Wiggers, L, deWolf, E, vanWoudenberg, R, Acosta, D, Bylsma, B, Durkin, L S, Gilmore, J, Ginsburg, C M, Kim, C L, Li, C, Ling, T Y, Nylander, P, Park, I H, Romanowski, T A, Bailey, D S, Cashmore, R J, CooperSarkar, A M, Devenish, R C E, Harnew, N, Lancaster, M, Lindemann, L, McFall, J D, Nath, C, Noyes, V A, Quadt, A, Tickner, J R, Uijterwaal, H, Walczak, R, Waters, D S, Wilson, F F, Yip, T, Bertolin, A, Brugnera, R, Carlin, R, DalCorso, F, DeGiorgi, M, Dosselli, U, Limentani, S, Morandin, M, Posocco, M, Stanco, L, Stroili, R, Voci, C, Zuin, F, Bulmahn, J, Feild, R G, Oh, B Y, Whitmore, J J, DAgostini, G, Marini, G, Nigro, A, Hart, J C, McCubbin, N A, Shah, T P, Barberis, E, Dubbs, T, Heusch, C, VanHook, M, Lockman, W, Rahn, J T, Sadrozinski, H F W, Seiden, A, Williams, D C, Biltzinger, J, Seifert, R J, Schwarzer, O, Walenta, A H, Abramowicz, H, Briskin, G, Dagan, S, Doeker, T, Levy, A, Fleck, J I, Inuzuka, M, Ishii, T, Kuze, M, Mine, S, Nakao, M, Suzuki, I, Tokushuku, K, Umemori, K, Yamada, S, Yamazaki, Y, Chiba, M, Hamatsu, R, Hirose, T, Homma, K, Kitamura, S, Matsushita, T, Yamauchi, K, Cirio, R, Costa, M, Ferrero, M I, Maselli, S, Peroni, C, Sacchi, R, Solano, A, Staiano, A, Dardo, M, Bailey, D C, Benard, F, Brkic, M, Fagerstroem, C P, Hartner, G F, Joo, K K, Levman, G M, Martin, J F, Orr, R S, Polenz, S, Sampson, C R, Simmons, D, Teuscher, R J, Butterworth, J M, Catterall, C D, Jones, T W, Kaziewicz, P B, Lane, J B, Saunders, R L, Shulman, J, Sutton, M R, Lu, B, Mo, L W, Bogusz, W, Ciborowski, J, Gajewski, J, Grzelak, G, Kasprzak, M, Krzyzanowski, M, Muchorowski, K, Nowak, R J, Pawlak, J M, Tymieniecka, T, Wroblewski, A K, Zakrzewski, J A, Zarnecki, A F, Adamus, M, Coldewey, C, Eisenberg, Y, Hochman, D, Karshon, U, Revel, D, ZerZion, D, Badgett, W F, Breitweg, J, Chapin, D, Cross, R, Dasu, S, Foudas, C, Loveless, R J, Mattingly, S, Reeder, D D, Silverstein, S, Smith, W H, Vaiciulis, A, Wodarczyk, M, Bhadra, S, Cardy, M L, Frisken, W R, Khakzad, M, and Schmidke, W B
Subjects: Scattering cross-section, Particle physics, Physics and Astronomy (miscellaneous), Proton, LUND MONTE-CARLO, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, 01 natural sciences, 7. Clean energy, Zeus (malware), Omega, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), Low energy, Pion, DESIGN, 0103 physical sciences, 010306 general physics, Nuclear Experiment, Physics, Research Groups and Centres\Physics\Low Temperature Physics, ZEUS, HIGH-ENERGY PHOTOPRODUCTION, CENTRAL TRACKING DETECTOR, ZEUS BARREL CALORIMETER, CONSTRUCTION, HYDROGEN, PHOTON, 010308 nuclear & particles physics, Faculty of Science\Physics, High Energy Physics::Phenomenology, HERA, Helicity, High Energy Physics::Experiment
Abstract: The reaction $\gamma p \rightarrow \omega p$ $(\omega \rightarrow \pi^+\pi^-\pi^0$ and $\pi^0\rightarrow\gamma\gamma)$ has been studied in $ep$ interactions using the ZEUS detector at photon-proton centre-of-mass energies between $70$ and $90 GeV$ and $|t| < 0.6 GeV^2$, where $t$ is the squared four momentum transferred at the proton vertex.The elastic \ome photoproduction cross section has been measured to be $\sigma_{\gamma p\rightarrow \omega p} = 1.21\pm 0.12\pm 0.23 \mu b$. The differential cross section $d\sigma_{\gamma p\rightarrow \omega p} /d|t|$ has an exponential shape $e^{-b |t|}$ with a slope $b = 10.0\pm 1.2\pm 1.3 GeV^{-2}$. The angular distributions of the decay pions are consistent with s-channel helicity conservation. When compared to low energy data, the features of $\omega$ photoproduction as measured at HERA energies are in agreement with those of a soft diffractive process. Previous measurements of the $\rho^0$ and $\phi$ photoproduction cross sections at HERA show a similar behaviour., Comment: 32 pages including 7 figures Various changes throughout the text of paper
Published: 1996

13. Observation of events with an energetic forward neutron in deep inelastic scattering at HERA

Author: Derrick, M., Krakauer, D., Magill, S., Mikunas, D., Musgrave, B., Okrasinski, J. R., Repond, J., Stanek, R., Talaga, R. L., Zhang, H., Mattingly, M. C. K., Bari, G., Basile, M., Bellagamba, L., Boscherini, D., Bruni, A., Bruni, G., Bruni, R., Cara Romeo, G., Guido Castellini, Cifarelli, L., Cindolo, F., Contin, A., Corradi, M., Gialas, I., Giusti, R., Iacobucci, G., Laurenti, G., Levi, G., Margotti, A., Massam, T., Nania, R., Palmonari, F., Polini, A., Sartorelli, G., Zamora Garcia, Y., Zichichi, A., Amelung, C., Bornheim, A., Crittenden, J., Deffner, R., Doeker, T., Eckert, M., Feld, L., Frey, A., Geerts, M., Grothe, M., Hartmann, H., Heinloth, K., Heinz, L., Hilger, E., Jakob, H. -P, Katz, U. F., Mengel, S., Paul, E., Pfeiffer, M., Rembser, C., Schramm, D., Stamm, J., Wedemeyer, R., Campbell-Robson, S., Cassidy, A., Cottingham, W. N., Dyce, N., Foster, B., George, S., Hayes, M. E., Heath, G. P., Heath, H. F., Piccioni, D., Roff, D. G., Tapper, R. J., Yoshida, R., Arneodo, M., Ayad, R., Capua, M., Garfagnini, A., Iannotti, L., Schioppa, M., Susinno, G., Caldwell, A., Cartiglia, N., Jing, Z., Liu, W., Parsons, J. A., Ritz, S., Sciulli, F., Straub, P. B., Wai, L., Yang, S., Zhu, Q., Borzemski, P., Chwastowski, J., Eskreys, A., Jakubowski, Z., Przybycień, M. B., Zachara, M., Zawiejski, L., Adamczyk, L., Bednarek, B., Jeleń, K., Kisielewska, D., Kowalski, T., Przybycień, M., Rulikowska-Zarȩbska, E., Suszycki, L., Zajac, J., Duliński, Z., Kotański, A., Abbiendi, G., Bauerdick, L. A. T., Behrens, U., Beier, H., Bienlein, J. K., Cases, G., Deppe, O., Desler, K., Drews, G., Flasiński, M., Gilkinson, D. J., Glasman, C., Göttlicher, P., Große-Knetter, J., Haas, T., Hain, W., Hasell, D., Heßling, H., Iga, Y., Johnson, K. F., Joos, P., Kasemann, M., Klanner, R., Koch, W., Kötz, U., Kowalski, H., Labs, J., Ladage, A., Löhr, B., Löwe, M., Lüke, D., Mainusch, J., Mańczak, O., Milewski, J., Monteiro, T., Ng, J. S. T., Notz, D., Ohrenberg, K., Piotrzkowski, K., Roco, M., Rohde, M., Roldán, J., Schneekloth, U., Schulz, W., Selonke, F., Surrow, B., Voß, T., Westphal, D., Wolf, G., Wollmer, U., Youngman, C., Zeuner, W., Grabosch, H. J., Kharchilava, A., Mari, S. M., Meyer, A., Schlenstedt, S., Wulff, N., Barbagli, G., Gallo, E., Pelfer, P., Maccarrone, G., Pasquale, S., Votano, L., Bamberger, A., Eisenhardt, S., Trefzger, T., Wölfle, S., Bromley, J. T., Brook, N. H., Bussey, P. J., Doyle, A. T., Saxon, D. H., Sinclair, L. E., Utley, M. L., Wilson, A. S., Dannemann, A., Holm, U., Horstmann, D., Sinkus, R., Wick, K., Burow, B. D., Hagge, L., Lohrmann, E., Poelz, G., Schott, W., Zetsche, F., Bacon, T. C., Brümmer, N., Butterworth, I., Harris, V. L., Howell, G., Hung, B. H. Y., Lamberti, L., Long, K. R., Miller, D. B., Pavel, N., Prinias, A., Sedgbeer, J. K., Sideris, D., Whitfield, A. F., Mallik, U., Wang, M. Z., Wang, S. M., Wu, J. T., Cloth, P., Filges, D., An, S. H., Cho, G. H., Ko, B. J., Lee, S. B., Nam, S. W., Park, H. S., Park, S. K., Kartik, S., Kim, H. -J, Mcneil, R. R., Metcalf, W., Nadendla, V. K., Barreiro, F., Fernandez, J. P., Graciani, R., Hernández, J. M., Hervás, L., Labarga, L., Martinez, M., Del Peso, J., Puga, J., Terron, J., Trocóniz, J. F., Corriveau, F., Hanna, D. S., Hartmann, J., Hung, L. W., Lim, J. N., Matthews, C. G., Patel, P. M., Riveline, M., Stairs, D. G., St-Laurent, M., Ullmann, R., Zacek, G., Tsurugai, T., Bashkirov, V., Dolgoshein, B. A., Stifutkin, A., Bashindzhagyan, G. L., Ermolov, P. F., Gladilin, L. K., Golubkov, Y. A., Kobrin, V. D., Korzhavina, I. A., Kuzmin, V. A., Lukina, O. Y., Proskuryakov, A. S., Savin, A. A., Shcheglova, L. M., Solomin, A. N., Zotov, N. P., Botje, M., Chlebana, F., Engelen, J., Kamps, M., Kooijman, P., Kruse, A., Sighem, A., Tiecke, H., Verkerke, W., Vossebeld, J., Vreeswijk, M., Wiggers, L., Wolf, E., Woudenberg, R., Acosta, D., Bylsma, B., Durkin, L. S., Gilmore, J., Li, C., Ling, T. Y., Nylander, P., Park, I. H., Romanowski, T. A., Bailey, D. S., Cashmore, R. J., Cooper-Sarkar, A. M., Devenish, R. C. E., Harnew, N., Lancaster, M., Lindemann, L., Mcfall, J. D., Nath, C., Noyes, V. A., Quadt, A., Tickner, J. R., Uijterwaal, H., Walczak, R., Waters, D. S., Wilson, F. F., Yip, T., Bertolin, A., Brugnera, R., Carlin, R., Dal Corso, F., Giorgi, M., Dosselli, U., Limentani, S., Morandin, M., Posocco, M., Stanco, L., Stroili, R., Voci, C., Zuin, F., Bulmahn, J., Feild, R. G., Oh, B. Y., Whitmore, J. J., D Agostini, G., Marini, G., Nigro, A., Tassi, E., Hart, J. C., Mccubbin, N. A., Shah, T. P., Barberis, E., Dubbs, T., Heusch, C., Hook, M., Lockman, W., Rahn, J. T., Sadrozinski, H. F. -W, Seiden, A., Williams, D. C., Bíltzinger, J., Seifert, R. J., Schwarzer, O., Walenta, A. H., Zech, G., Abramowicz, H., Briskin, G., Dagan, S., Levy, A., Fleck, J. I., Inuzuka, M., Ishii, T., Kuze, M., Mine, S., Nakao, M., Suzuki, I., Tokushuku, K., Umemori, K., Yamada, S., Yamazaki, Y., Chiba, M., Hamatsu, R., Hirose, T., Homma, K., Kitamura, S., Matsushita, T., Yamauchi, K., Cirio, R., Costa, M., Ferrero, M. I., Maselli, S., Peroni, C., Sacchi, R., Solano, A., Staiano, A., Dardo, M., Bailey, D. C., Benard, F., Brkic, M., Fagerstroem, C. -P, Hartner, G. F., Joo, K. K., Levman, G. M., Martin, J. F., Orr, R. S., Polenz, S., Sampson, C. R., Simmons, D., Teuscher, R. J., Butterworth, J. M., Catterall, C. D., Jones, T. W., Kaziewicz, P. B., Lane, J. B., Saunders, R. L., Shulman, J., Sutton, M. R., Lu, B., Mo, L. W., Bogusz, W., Ciborowski, J., Gajewski, J., Grzelak, G., Kasprzak, M., Krzyzanowski, M., Muchorowski, K., Nowak, R. J., Pawlak, J. M., Tymieniecka, T., Wróblewski, A. K., Zakrzewski, J. A., Zarnecki, A. F., Adamus, M., Coldewey, C., Eisenberg, Y., Hochman, D., Karshon, U., Revel, D., Zer-Zion, D., Badgett, W. F., Breitweg, J., Chapin, D., Cross, R., Dasu, S., Foudas, C., Loveless, R. J., Mattingly, S., Reeder, D. D., Silverstein, S., Smith, W. H., Vaiciulis, A., Wodarczyk, M., Bhadra, S., Cardy, M. L., Frisken, W. R., Furutani, K. M., Khakzad, M., Murray, W. N., Schmidke, W. B., and ZEUS at HERA (IHEF, IoP, FNWI)
Subjects: Nuclear and High Energy Physics, Particle physics, Proton, FOS: Physical sciences, 01 natural sciences, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, Neutron, CALORIMETER, 010306 general physics, Nuclear Experiment, Physics, Research Groups and Centres\Physics\Low Temperature Physics, ZEUS (particle detector), Neutral current, 010308 nuclear & particles physics, Scattering, Faculty of Science\Physics, Mathematics::History and Overview, ZEUS, HERA, Deep inelastic scattering, LARGE RAPIDITY GAP, High Energy Physics::Experiment, Center of mass
Abstract: In deep inelastic neutral current scattering of positrons and protons at the center of mass energy of 300 GeV, we observe, with the ZEUS detector, events with a high energy neutron produced at very small scattering angles with respect to the proton direction. The events constitute a fixed fraction of the deep inelastic, neutral current event sample independent of Bjorken $x$ and $Q^2$ in the range $ 3 \cdot 10^{-4} < \xbj < 6\cdot 10^{-3}$ and $10 < Q^2, PS file including 4 figures First replacement due to display problems with fig. 3. Contents of paper unchanged
Published: 1996

14. Measurement of the proton structure function F_2 at low x and low Q(2) at HERA

Author: Derrick, M, Krakauer, D, Magill, S, Mikunas, D, Musgrave, B, Repond, J, Stanek, R, Talaga, Rl, Zhang, H, Bari, G, Basile, M, Bellagamba, L, Boscherini, D, Bruni, A, Bruni, G, Bruni, P, Romeo, Gc, Castellini, G, Chiarini, M, Cifarelli, L, Cindolo, F, Contin, A, Corradi, M, Gialas, I, Giusti, P, Iacobucci, G, Laurenti, G, Levi, G, Margotti, A, Massam, T, Nania, R, Nemoz, C, Palmonari, F, Polini, A, Sartorelli, G, Timellini, R, Garcia, Yz, Zichichi, A, Bornheim, A, Crittenden, J, Desch, K, Diekmann, B, Doeker, T, Eckert, M, Feld, L, Frey, A, Geerts, M, Grothe, M, Hartmann, H, Heinloth, K, Heinz, L, Hilger, E, Jakob, Hp, Katz, Uf, Mengel, S, Mollen, J, Paul, E, Pfeiffer, M, Rembser, C, Schramm, D, Stamm, J, Wedemeyer, R, Campbellrobson, S, Cassidy, A, Cottingham, Wn, Dyce, N, Foster, B, George, S, Hayes, Me, Heath, Gp, Heath, Hf, Morgado, Cjs, Omara, Ja, Piccioni, D, Roff, Dg, Tapper, Rj, Yoshida, R, Rau, Rr, Arneodo, M, Ayad, R, Capua, M, Garfagnini, Alberto, Iannotti, L, Schioppa, M, Susinno, G, Bernstein, A, Caldwell, A, Cartiglia, N, Parsons, Ja, Ritz, S, Sciulli, F, Straub, Pb, Wai, L, Yang, S, Zhu, Q, Borzemski, P, Chwastowski, J, Eskreys, A, Piotrzkowski, K, Zachara, M, Zawiejski, L, Adamczyk, L, Bednarek, B, Jelen, K, Kisielewska, D, Kowalski, T, Przybycien, M, Rulikowskazarebska, E, Suszycki, L, Zajac, J, Kotanski, A, Bauerdick, Lat, Behrens, U, Beier, H, Bienlein, Jk, Coldewey, C, Deppe, O, Desler, K, Drews, G, Flasinski, M, Gilkinson, Dj, Glasman, C, Gottlicher, P, Grosseknetter, J, Gutjahr, B, Haas, T, Hain, W, Hasell, D, Hessling, H, Iga, Y, Johnson, Kf, Joos, P, Kasemann, M, Klanner, R, Koch, W, Kopke, L, Kotz, U, Kowalski, H, Labs, J, Ladage, A, Lohr, B, Lowe, M, Luke, D, Mainusch, J, Marczak, O, Monteiro, T, Jst, Ng, Nickel, S, Notz, D, Ohrenberg, K, Roco, M, Rohde, M, Roldan, J, Schneekloth, U, Schulz, W, Selonke, F, Stiliaris, E, Surrow, B, Voss, T, Westphal, D, Wolf, G, Youngman, C, Zeuner, W, Zhou, Jf, Grabosch, Hj, Kharchilava, A, Leich, A, Mari, Sm, Mattingly, Mck, Meyer, A, Schlenstedt, S, Wulff, N, Barbagli, G, Gallo, E, Pelfer, P, Anzivino, G, Maccarrone, G, Depasquale, S, Votano, L, Bamberger, A, Eisenhardt, S, Freidhof, A, Soldnerrembold, S, Schroeder, J, Trefzger, T, Brook, Nh, Bussey, Pj, Doyle, At, Saxon, Dh, Utley, Ml, Wilson, As, Dannemann, A, Holm, U, Horstmann, D, Neumann, T, Sinkus, R, Wick, K, Badura, E, Burow, Bd, Hagge, L, Lohrmann, E, Milewski, J, Nakahata, M, Pavel, N, Poelz, G, Schott, W, Zetsche, F, Bacon, Tc, Bruemmer, N, Butterworth, I, Harris, Vl, Hung, Byh, Long, Kr, Miller, Db, Morawitz, Ppo, Prinias, A, Sedgbeer, Jk, Whitfield, Af, Mallik, U, Mccliment, E, Wang, Mz, Wang, Sm, Wu, Jt, Cloth, P, Filges, D, An, Sh, Hong, Sm, Nam, Sw, Park, Sk, Suh, Mh, Yon, Sh, Imlay, R, Kartik, S, Kim, Hj, Mcneil, Rr, Metcalf, W, Nadendla, Vk, Barreiro, F, Cases, G, Fernandez, Jp, Graciani, R, Hernandez, Jm, Hervas, L, Labarga, L, Martinez, M, Delpeso, J, Puga, J, Terron, J, Detroconiz, Jf, Smith, Gr, Corriveau, F, Hanna, Ds, Hartmann, J, Hung, Lw, Lim, Jn, Matthews, Cg, Patel, Pm, Sinclair, Le, Stairs, Dg, Stlaurent, M, Ullmann, R, Zacek, G, Bashkirov, V, Dolgoshein, Ba, Stifutkin, A, Bashindzhagyan, Gl, Ermolov, Pf, Gladilin, Lk, Golubkov, Ya, Kobrin, Vd, Korzhavina, Ia, Kuzmin, Va, Lukina, Oy, Proskuryakov, As, Savin, Aa, Shcheglova, Lm, Solomin, An, Zotov, Np, Botje, M, Chlebana, F, Dake, A, Engelen, J, Dekamps, M, Kooijman, P, Kruse, A, Tiecke, H, Verkerke, W, Vreeswijk, M, Wiggers, L, Dewolf, E, Vanwoudenberg, R, Acosta, D, Bylsma, B, Durkin, Ls, Gilmore, J, Honscheid, K, Li, C, Ling, Ty, Mclean, Kw, Nylander, P, Park, Ih, Romanowski, Ta, Seidlein, R, Bailey, Ds, Byrne, A, Cashmore, Rj, Coopersarkar, Am, Devenish, Rce, Harnew, N, Lancaster, M, Lindemann, L, Mcfall, Jd, Nath, C, Noyes, Va, Quadt, A, Tickner, Jr, Uijterwaal, H, Walczak, R, Waters, Ds, Wilson, Ff, Yip, T, Abbiendi, G, Bertolin, A, Brugnera, Riccardo, Carlin, Roberto, Dalcorso, F, Degiorgi, M, Dosselli, U, Limentani, S, Morandin, M, Posocco, M, Stanco, L, Stroili, Roberto, Voci, C, Bulmahn, J, Butterworth, Jm, Feild, Rg, Oh, By, Okrasinski, Jr, Whitmore, Jj, Dagostini, G, Marini, G, Nigro, A, Tassi, E, Hart, Jc, Mccubbin, Na, Prytz, K, Shah, Tp, Short, Tl, Barberis, E, Dubbs, T, Heusch, C, Vanhook, M, Lockman, W, Rahn, Jt, Sadrozinski, Hfw, Seiden, A, Williams, Dc, Biltzinger, J, Seifert, Rj, Schwarzer, O, Walenta, Ah, Zech, G, Abramowicz, H, Briskin, G, Dagan, S, Handelpikielny, C, Levy, A, Fleck, Ji, Hasegawa, T, Hazumi, M, Ishii, T, Kuze, M, Mine, S, Nagasawa, Y, Nakao, M, Suzuki, I, Tokushuku, K, Yamada, S, Yamazaki, Y, Chiba, M, Hamatsu, R, Hirose, T, Homma, K, Kitamura, S, Nakamitsu, Y, Yamauchi, K, Cirio, R, Costa, M, Ferrero, Mi, Lamberti, L, Maselli, S, Peroni, C, Sacchi, R, Solano, A, Staiano, A, Dardo, M, Bailey, Dc, Bandyopadhyay, D, Benard, F, Brkic, M, Gingrich, Dm, Hartner, Gf, Joo, Kk, Levman, Gm, Martin, Jf, Orr, Rs, Polenz, S, Sampson, Cr, Teuscher, Rj, Catterall, Cd, Jones, Tw, Kaziewicz, Pb, Lane, Jb, Saunders, Rl, Shulman, J, Blankenship, K, Lu, B, Mo, Lw, Bogusz, W, Charchula, K, Ciborowski, J, Gajewski, J, Grzelak, G, Kasprzak, M, Krzyzanowski, M, Muchorowski, K, Nowak, Rj, Pawlak, Jm, Tymieniecka, T, Wroblewski, Ak, Zakrzewski, Ja, Zarnecki, Af, Adamus, M, Eisenberg, Y, Karshon, U, Revel, D, Zerzion, D, Ali, L, Badgett, Wf, Behrens, B, Dasu, S, Fordham, C, Foudas, C, Goussiou, A, Loveless, Rj, Reeder, Dd, Silverstein, S, Smith, Wh, Vaiciulis, A, Wodarczyk, M, Tsurugai, T, Bhadra, S, Cardy, Ml, Fagerstroem, Cp, Frisken, Wr, Furutani, Km, Khakzad, M, Murray, Wn, Schmidke, Wb, and ZEUS at HERA (IHEF, IoP, FNWI)
Subjects: Particle physics, Physics and Astronomy (miscellaneous), Proton, LUND MONTE-CARLO, MUON SCATTERING, FOS: Physical sciences, structure functions, perturbative QCD, 01 natural sciences, law.invention, High Energy Physics - Experiment, REGION, Nuclear physics, High Energy Physics - Experiment (hep-ex), law, 0103 physical sciences, COHERENCE, 010306 general physics, Collider, Nuclear Experiment, Physics, DEEP-INELASTIC-SCATTERING, Range (particle radiation), ZEUS (particle detector), CONSTRUCTION, 010308 nuclear & particles physics, Structure function, High Energy Physics::Phenomenology, Perturbative QCD, ZEUS, ZEUS BARREL CALORIMETER, EP SCATTERING, PARTON DISTRIBUTIONS, QCD CASCADES, HERA, Deep inelastic scattering, High Energy Physics::Experiment
Abstract: We report on a measurement of the proton structure function $F_2$ in the range $3.5\times10^{-5}\leq x \leq 4\times10^{-3}$ and 1.5 ${\rm GeV^2} \leq Q^2 \leq15$ ${\rm GeV^2}$ at the $ep$ collider HERA operating at a centre-of-mass energy of $\sqrt{s} = 300$ ${\rm GeV}$. The rise of $F_2$ with decreasing $x$ observed in the previous HERA measurements persists in this lower $x$ and $Q^2$ range. The $Q^2$ evolution of $F_2$, even at the lowest $Q^2$ and $x$ measured, is consistent with perturbative QCD., 29 pages, latex, 6 figures appended as uuencoded file. Author list corrected
Published: 1996

15. MEASUREMENT OF ELASTIC P(0) PHOTOPRODUCTION AT HERA

Author: Derrick, M., Krakauer, D., Bari, G., Zawiejski, L., Adamczyk, L., Bednarek, B., Jelen, K., Kisielewska, D., Kowalski, T., Rulikowska-Zarebska, E., Suszycki, L., Zajac, J., Kotanski, A., Basile, M., Przybycien, M., Bauerdick, L. A. T., Behrens, U., Beier, H., Bienlein, J. K., Coldewey, C., Deppe, O., Desler, K., Drews, G., Flasinski, M., Bellagamba, L., Gilkinson, D. J., Glasman, C., Gottlicher, P., Grosse-Knetter, J., Gutjahr, B., Haas, Tobias M., Hain, W., Hasell, D., Hessling, H., Iga, Y., Boscherini, D., Johnson, K., Joos, P., Kasemann, M., Klanner, R., Koch, W., Kopke, L., Kotz, U., Kowalski, H., Labs, J., Ladage, A., Bruni, A., Lohr, B., Lowe, M., Luke, D., Mainusch, J., Manczak, O., Monteiro, T., Ng, J. S. T., Nickel, S., Notz, D., Ohrenberg, K., Bruni, G., Roco, M., Rohde, M., Roldan, J., Schneekloth, U., Schulz, W., Selonke, F., Stiliaris, E., Surrow, B., Voss, T., Westphal, D., Bruni, P., Wolf, G., Youngman, C., Zeuner, W., Zhou, J. F., Grabosch, H. J., Kharchilava, A., Leich, A., Mattingly, M., Mari, S. M., Meyer, A., Cara Romeo, G., Schlenstedt, S., Wulff, N., Barbagli, G., Pelfer, P., Anzivino, G., Maccarrone, G., De Pasquale, S., Votano, L., Bamberger, A., Eisenhardt, S., Castellini, G., Freidhof, A., Soldner-Rembold, S., Schroeder, J., Trefzger, T., Brook, N. H., Bussey, P. J., Doyle, A. T., Saxon, D. H., Utley, M. L., Wilson, A. S., Chiarini, M., Dannemann, A., Holm, U., Horstmann, D., Neumann, T., Sinkus, R., Wick, K., Badura, E., Burow, B. D., Hagge, L., Lohrmann, E., Magill, S., Cifarelli, L., Milewski, J., Nakahata, M., Pavel, N., Poelz, G., Schott, W., Zetsche, F., Bacon, T. C., Brummer, N., Butterworth, I., Gallo, E., Cindolo, F., Harris, V. L., Hung, B. H. Y., Long, K. R., Miller, D. B., Morawitz, P. P. O., Prinias, A., Sedgbeer, J. K., Whitfield, A., Mallik, U., McCliment, E., Contin, A., Wang, M. Z., Wang, S. M., Wu, J. T., Cloth, P., Filges, D., An, S. H., Hong, S. M., Nam, S. W., Park, S. K., Suh, M. H., Corradi, M., Yon, S. H., Imlay, R., Kartik, S., Kim, H. J., McNeil, R. R., Metcalf, W., Nadendla, V. K., Barreiro, F., Cases, G., Fernandez, J. P., Gialas, I., Graciani, R., Hernandez, J. M., Hervas, L., Labarga, L., Martinez, M., del Peso, J., Puga, J., Terron, J., de Troconiz, J. F., Smith, G. R., Giusti, P., Corriveau, F., Hanna, D. S., Hartmann, J., Hung, L. W., Lim, J. N., Matthews, C., Patel, P. M., Sinclair, L. E., Stairs, D. G., St. Laurent, M., Iacobucci, G., Ullmann, R., Zacek, G., Bashkirov, V., Dolgoshein, B. A., Stifutkin, A., Bashindzhagian, G. L., Ermolov, P. F., Gladilin, L. K., Golubkov, Yu. A., Kobrin, V. D. D., Laurenti, G., Korzhavina, I. A., Kuzmin, V. A., Lukina, O. Yu., Proskuryakov, A. S., Savin, A. A., Shcheglova, L. M., Solomin, A. N., Zotov, N. P., Botje, M., Chlebana, F., Levi, G., Dake, A., Engelen, J., de Kamps, M., Kooijman, P., Kruse, A., Tiecke, H., Verkerke, W., Vreeswijk, M., Wiggers, L., de Wolf, E., Margotti, A., van Woudenberg, R., Acosta, D., Bylsma, B., Durkin, L. S., Gilmore, J., Honscheid, K., Li, C., Ling, T. Y., McLean, K. W., Murray, W. N., Mikunas, D., Massam, T., Nylander, P., Park, I. H., Romanowski, T. A., Seidlein, R., Bailey, David C., Byrne, J., Cashmore, R. J., Cooper-Sarkar, Amanda M., Devenish, R. C. E., Harnew, N., Nania, R., Lancaster, M., Lindemann, L., McFall, J., Nath, C., Noyes, V. A., Quadt, A., Tickner, J. R., Uijterwaal, H., Walczak, R., Waters, D. S., Nemoz, C., Wilson, F. F., Yip, T., Abbiendi, G., Bertolin, A., Brugnera, R., Carlin, R., Dal Corso, F., De Giorgi, M., Dosselli, U., Limentani, S., Palmonari, F., Morandin, M., Posocco, M., Stanco, L., Stroili, R., Voci, C., Bulmahn, J., Butterworth, J. M., Feild, R. G., Oh, B. Y., Whitmore, J., Polini, A., D'Agostini, G., Marini, G., Nigro, A., Tassi, E., Hart, J. C., McCubbin, N. A., Prytz, K., Shah, T. P., Short, T. L., Barberis, E., Sartorelli, G., Dubbs, T., Heusch, C., Van Hook, M., Lockman, William S., Rahn, J. T., Sadrozinski, H. F., Seiden, A., Williams, D. C., Biltzinger, J., Seifert, R. J., Timellini, R., Schwarzer, O., Walenta, A. H., Zech, Gunter, Abramowicz, H., Briskin, G., Dagan, S., Levy, A., Fleck, J. I., Hasegawa, T., Hazumi, M., Zamora Garcia, Y., Ishii, T., Kuze, M., Mine, S., Nagasawa, Y., Nakao, M., Suzuki, I., Tokushuku, K., Yamada, S., Yamazaki, Y., Chiba, M., Zichichi, A., Hamatsu, R., Hirose, T., Homma, K., Kitamura, S., Nakamitsu, Y., Yamauchi, K., Cirio, R., Costa, M., Ferrero, M. I., Lamberti, L., Bargende, A., Maselli, S., Peroni, C., Sacchi, R., Solano, A., Staiano, A., Dardo, M., Bandyopadhyay, D., Benard, F., Brkic, M., Musgrave, B., Bornheim, A., Gingrich, D. M., Hartner, G. F., Joo, K. K., Levman, G. M., Martin, J. F., Orr, R. S., Polenz, S., Sampson, Cortney R., Teuscher, R. J., Catterall, C. D., Crittenden, J., Jones, T. W., Kaziewicz, P. B., Lane, J. B., Saunders, R. L., Shulman, J., Blankenship, K., Lu, B., Mo, L. W., Bogusz, W., Charchula, K., Desch, K., Ciborowski, J., Gajewski, J., Grzelak, G., Kasprzak, M., Krzyzanowski, M., Muchorowski, K., Nowak, R. J., Pawlak, J. M., Tymieniecka, T., Wroblewski, A. K., Diekmann, B., Zakrzewski, Janusz Andrzej, Zarnecki, A. F., Adamus, M., Eisenberg, Y., Karshon, U., Revel, D., Zer-Zion, D., Ali, I., Badgett, W. F., Behrens, B., Doeker, T., Dasu, S., Fordham, C., Foudas, C., Goussiou, A., Loveless, R. J., Reeder, D. D., Silverstein, S., Smith, W. H., Vaiciulis, A., Wodarczyk, M., Eckert, M., Tsurugai, T., Bhadra, S., Cardy, M. L., Fagerstroem, C. P., Frisken, William R., Furutani, K. M., Khakzad, M., Schmidke, W. B., ZEUS Collaboration, Feld, L., Frey, A., Geerts, M., Grothe, M., Repond, J., Hartmann, H., Heinloth, K., Hilger, E., Jakob, H. P., Katz, U. F., Mengel, S., Mollen, J., Paul, E., Pfeiffer, M., Rembser, C., Stanek, R., Schramm, D., Stamm, J., Wedemeyer, R., Campbell-Robson, S., Cassidy, A., Dyce, N., Foster, B., George, S., Gilmore, R., Heath, G. P., Talaga, R. L., Heath, Helen F., Llewellyn, T. J., Morgado, C. J. S., Norman, D. J. P., O'Mara, J. A., Tapper, R. J., Wilson, S. S., Yoshida, R., Rau, R. R., Arneodo, M., Zhang, H., Capua, M., Garfagnini, A., Iannotti, L., Schioppa, M., Susinno, G., Bernstein, A., Caldwell, A., Cartiglia, N., Parsons, J. A., Ritz, S., Ayad, R., Sciulli, F., Straub, P. B., Wai, L., Yang, S., Zhu, Q., Borzemski, P., Chwastowski, J., Eskreys, A., Piotrzkowski, K., Zachara, M., and Zeus (IHEF, IoP, FNWI)
Subjects: Photon, Physics and Astronomy (miscellaneous), Proton, (pi+ pi-) [mass spectrum], 60-80 GeV-cms (photon), rho(770)0 [polarization], elastic scattering, rho(770) p [elastic scattering], 01 natural sciences, High Energy Physics - Experiment, MUON-PROTON-SCATTERING, differential cross section [energy dependence], Invariant mass, ZEUS, HIGH-ENERGY PHOTOPRODUCTION, DEEP INELASTIC-SCATTERING, CENTRAL TRACKING DETECTOR, ZEUS BARREL CALORIMETER, LUND MONTE-CARLO, HADRONIC PROPERTIES, PHOTON, CONSTRUCTION, HYDROGEN, Nuclear Experiment, colliding beams [electron p], Physics, HERA, electron p [colliding beams], Helicity, polarization [rho(770)0], DESY HERA Stor, differential cross section, mass spectrum [(pi+ pi-)], photoproduction, Particle physics, interaction [photon p], transverse [polarization], rho(770)0 [photoproduction], Nuclear physics, Pion, photon p [interaction], 0103 physical sciences, ddc:530, elastic scattering [rho(770) p], 010306 general physics, channel cross section, Research Groups and Centres\Physics\Low Temperature Physics, ZEUS (particle detector), 010308 nuclear & particles physics, Faculty of Science\Physics, High Energy Physics::Phenomenology, bibliography, Deep inelastic scattering, conservation law [helicity], photoproduction [rho(770)0], polarization [transverse], energy dependence [differential cross section], High Energy Physics::Experiment, experimental results
Abstract: Elastic $\rho^0$ photoproduction has been measured using the ZEUS detector at HERA. Untagged photoproduction events from $ep$ interactions were used to measure the reaction $\gamma p \rightarrow \rho^0 p$ ($\rho^0 \rightarrow \pi^+ \pi^-$) at photon-proton centre-of-mass energies between 60 and 80~GeV and $|t, Comment: 38 pages, latex, 10 figures appended as uuencoded file. This manuscript replaces the one which had a non standard style file
Published: 1995
Full Text: View/download PDF

16. Diffractive Hard Photoproduction at HERA and Evidence for the Gluon Content of the Pomeron

Author: David Bailey, Derrick, M., Krakauer, D., Magill, S., Mikunas, D., Musgrave, B., Repond, J., Stanek, R., Talaga, R. L., Zhang, H., Ayad, R., Bari, G., Basile, M., Bellagamba, L., Boscherini, D., Bruni, A., Bruni, G., Bruni, P., Cara Romeo, G., Castellini, G., Chiarini, M., Cifarelli, L., Cindolo, F., Contin, A., Corradi, M., Gialas, I., Giusti, P., Iacobucci, G., Laurenti, G., Levi, G., Margotti, A., Massam, T., Nania, R., Nemoz, C., Palmonari, F., Polini, A., Sartorelli, G., Timellini, R., Zamora Garcia, Y., Zichichi, A., Bargende, A., Crittenden, J., Desch, K., Diekmann, B., Doeker, T., Eckert, M., Feld, L., Frey, A., Geerts, M., Grothe, M., Hartmann, H., Heinloth, K., Hilger, E., Jakob, H. P., Katz, U. F., Mari, S. M., Mengel, S., Mollen, J., Paul, E., Pfeiffer, M., Ch Rembser, Schramm, D., Stamm, J., Wedemeyer, R., Campbell-Robson, S., Cassidy, A., Dyce, N., Foster, B., George, S., Gilmore, R., Heath, G. P., Heath, H. F., Llewellyn, T. J., Morgado, C. J. S., Norman, D. J. P., Mara, J. A. O., Tapper, R. J., Wilson, S. S., Yoshida, R., Rau, R. R., Arneodo, M., Capua, M., Garfagnini, A., Iannotti, L., Schioppa, M., Susinno, G., Bernstein, A., Caldwell, A., Cartiglia, N., Parsons, J. A., Ritz, S., Sciulli, F., Straub, P. B., Wai, L., Yang, S., Zhu, Q., Borzemski, P., Chwastowski, J., Eskreys, A., Piotrzkowski, K., Zachara, M., Zawiejski, L., Adamczyk, L., Bednarek, B., Jeleń, K., Kisielewska, D., Kowalski, T., Rulikowska-Zarȩbska, E., Suszycki, L., Zaja̧c, J., Kotański, A., Przybycień, M., Bauerdick, L. A. T., Behrens, U., Beier, H., Bienlein, J. K., Coldewey, C., Deppe, O., Desler, K., Drews, G., Flasiński, M., Gilkinson, D. J., Glasman, C., Göttlicher, P., Große-Knetter, J., Gutjahr, B., Haas, T., Hain, W., Hasell, D., Heßling, H., Iga, Y., Johnson, K., Joos, P., Kasemann, M., Klanner, R., Koch, W., Köpke, L., Kötz, U., Kowalski, H., Labs, J., Ladage, A., Löhr, B., Löwe, M., Lüke, D., Mainusch, J., Mańczak, O., Monteiro, T., Ng, J. S. T., Nickel, S., Notz, D., Ohrenberg, K., Roco, M., Rohde, M., Roldán, J., Schneekloth, U., Schulz, W., Selonke, F., Stiliaris, E., Surrow, B., Voß, T., Westphal, D., Wolf, G., Youngman, C., Zeuner, W., Zhou, J. F., Grabosch, H. J., Kharchilava, A., Leich, A., Mattingly, M. C. K., Meyer, A., Schlenstedt, S., Wulff, N., Barbagli, G., Pelfer, P., Anzivino, G., Maccarrone, G., Pasquale, S., Votano, L., Bamberger, A., Eisenhardt, S., Freidhof, A., Stefan Soldner-Rembold, Schroeder, J., Trefzger, T., Brook, N. H., Bussey, P. J., Doyle, A. T., Fleck, J. I., Saxon, D. H., Utley, M. L., Wilson, A. S., Dannemann, A., Holm, U., Horstmann, D., Neumann, T., Sinkus, R., Wick, K., Badura, E., Burow, B. D., Hagge, L., Lohrmann, E., Milewski, J., Nakahata, M., Pavel, N., Poelz, G., Schott, W., Zetsche, F., Bacon, T. C., Bruemmer, N., Butterworth, I., Gallo, E., Harris, V. L., Hung, B. Y. H., Long, K. R., Miller, D. B., Morawitz, P. P. O., Prinias, A., Sedgbeer, J. K., Whitfield, A. F., Mallik, U., Mccliment, E., Wang, M. Z., Wang, S. M., Wu, J. T., Cloth, P., Filges, D., An, S. H., Hong, S. M., Nam, S. W., Park, S. K., Suh, M. H., Yon, S. H., Imlay, R., Kartik, S., Kim, H. J., Mcneil, R. R., Metcalf, W., Nadendla, V. K., Barreiro, F., Cases, G., Fernandez, J. P., Graciani, R., Hernández, J. M., Hervás, L., Labarga, L., Martinez, M., Del Peso, J., Puga, J., Terron, J., Trocóniz, J. F., Smith, G. R., Corriveau, F., Hanna, D. S., Hartmann, J., Hung, L. W., Lim, J. N., Matthews, C. G., Patel, P. M., Sinclair, L. E., Stairs, D. G., St Laurent, M., Ullmann, R., Zacek, G., Bashkirov, V., Dolgoshein, B. A., Stifutkin, A., Bashindzhagyan, G. L., Ermolov, P. F., Gladilin, L. K., Golubkov, Yu A., Kobrin, V. D., Korzhavina, I. A., Kuzmin, V. A., Yu Lukina, O., Proskuryakov, A. S., Savin, A. A., Shcheglova, L. M., Solomin, A. N., Zotov, N. P., Botje, M., Chlebana, F., Dake, A., Engelen, J., Kamps, M., Kooijman, P., Kruse, A., Tiecke, H., Verkerke, W., Vreeswijk, M., Wiggers, L., Wolf, E., Woudenberg, R., Acosta, D., Bylsma, B., Durkin, L. S., Honscheid, K., Li, C., Ling, T. Y., Mclean, K. W., Murray, W. N., Park, I. H., Romanowski, T. A., Seidlein, R., Bailey, D. S., Byrne, A., Cashmore, R. J., Cooper-Sarkar, A. M., Devenish, R. C. E., Harnew, N., Lancaster, M., Lindemann, L., Mcfall, J. D., Nath, C., Noyes, V. A., Quadt, A., Tickner, J. R., Uijterwaal, H., Walczak, R., Waters, D. S., Wilson, F. F., Yip, T., Abbiendi, G., Bertolin, A., Brugnera, R., Carlin, R., Dal Corso, F., Giorgi, M., Dosselli, U., Limentani, S., Morandin, M., Posocco, M., Stanco, L., Stroili, R., Voci, C., Bulmahn, J., Butterworth, J. M., Feild, R. G., Oh, B. Y., Whitmore, J. J., Agostini, G. D., Marini, G., Nigro, A., Tassi, E., Hart, J. C., Mccubbin, N. A., Prytz, K., Shah, T. P., Short, T. L., Barberis, E., Dubbs, T., Heusch, C., Hook, M., Lockman, W., Rahn, J. T., Sadrozinski, H. F. W., Seiden, A., Williams, D. C., Biltzinger, J., Seifert, R. J., Schwarzer, O., Walenta, A. H., Zech, G., Abramowicz, H., Briskin, G., Dagan, S., Levy, A., Hasegawa, T., Hazumi, M., Ishii, T., Kuze, M., Mine, S., Nagasawa, Y., Nakao, M., Suzuki, I., Tokushuku, K., Yamada, S., Yamazaki, Y., Chiba, M., Hamatsu, R., Hirose, T., Homma, K., Kitamura, S., Nakamitsu, Y., Yamauchi, K., Cirio, R., Costa, M., Ferrero, M. I., Lamberti, L., Maselli, S., Peroni, C., Sacchi, R., Solano, A., Staiano, A., Dardo, M., Bailey, D. C., Bandyopadhyay, D., Benard, F., Brkic, M., Crombie, M. B., Gingrich, D. M., Hartner, G. F., Joo, K. K., Levman, G. M., Martin, J. F., Orr, R. S., Polenz, S., Sampson, C. R., Teuscher, R. J., Catterall, C. D., Jones, T. W., Kaziewicz, P. B., Lane, J. B., Saunders, R. L., Shulman, J., Blankenship, K., Lu, B., Mo, L. W., Bogusz, W., Charchuła, K., Ciborowski, J., Gajewski, J., Grzelak, G., Kasprzak, M., Krzyzanowski, M., Muchorowski, K., Nowak, R. J., Pawlak, J. M., Tymieniecka, T., Wróblewski, A. K., Zakrzewski, J. A., Zarnecki, A. F., Adamus, M., Eisenberg, Y., Karshon, U., Revel, D., Zer-Zion, D., Ali, I., Badgett, W. F., Behrens, B., Dasu, S., Fordham, C., Foudas, C., Goussiou, A., Loveless, R. J., Reeder, D. D., Silverstein, S., Smith, W. H., Vaiciulis, A., Wodarczyk, M., Tsurugai, T., Bhadra, S., Cardy, M. L., Fagerstroem, C. P., Frisken, W. R., Furutani, K. M., Khakzad, M., Schmidke, W. B., and Zeus (IHEF, IoP, FNWI)
Subjects: Quark, Nuclear and High Energy Physics, Particle physics, LUND MONTE-CARLO, Regge phenomenology, PARTON DISTRIBUTIONS, QUARK INTERACTIONS, JET FRAGMENTATION, E+E-PHYSICS, SCATTERING, EVENTS, DISSOCIATION, CALORIMETER, ZEUS, FOS: Physical sciences, Parton, cross section measurement, pomeron exchange, deep inelastic scattering, 01 natural sciences, 7. Clean energy, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Pomeron, 0103 physical sciences, Rapidity, 010306 general physics, Nuclear Experiment, Physics, Quantum chromodynamics, Research Groups and Centres\Physics\Low Temperature Physics, 010308 nuclear & particles physics, Faculty of Science\Physics, High Energy Physics::Phenomenology, HERA, Deep inelastic scattering, Gluon, High Energy Physics::Experiment
Abstract: Inclusive jet cross sections for events with a large rapidity gap with respect to the proton direction from the reaction $ep \rightarrow jet \; + \; X$ with quasi-real photons have been measured with the ZEUS detector. The cross sections refer to jets with transverse energies $E_T^{jet}>8$~GeV. The data show the characteristics of a diffractive process mediated by pomeron exchange. Assuming that the events are due to the exchange of a pomeron with partonic structure, the quark and gluon content of the pomeron is probed at a scale $\sim (E_T^{jet})^2$. A comparison of the measurements with model predictions based on QCD plus Regge phenomenology requires a contribution of partons with a hard momentum density in the pomeron. A combined analysis of the jet cross sections and recent ZEUS measurements of the diffractive structure function in deep inelastic scattering gives the first experimental evidence for the gluon content of the pomeron in diffractive hard scattering processes. The data indicate that between 30\% and 80\% of the momentum of the pomeron carried by partons is due to hard gluons., 25 pages, latex, 4 figures appended as uuencoded file. No change w.r.t. previous version (just avoiding warning latex messages while processing)
Published: 1995

17. Measurement of elastic ω photoproduction at HERA ZEUS Collaboration

Author: DERRICK, M, KRAKAUER, D, MAGILL, S, MIKUNAS, D, MUSGRAVE, B, REPOND, J, STANEK, R, TALAGA, RL, ZHANG, H, AYAD, R, BARI, G, BASILE, M, BELLAGAMBA, L, BOSCHERINI, D, BRUNI, A, BRUNI, G, BRUNI, P, ROMEO, GC, CASTELLINI, G, CHIARINI, M, CIFARELLI, L, CINDOLO, F, CONTIN, A, CORRADI, M, GIALAS, I, GIUSTI, P, IACOBUCCI, G, LAURENTI, G, LEVI, G, MARGOTTI, A, MASSAM, T, NANIA, R, NEMOZ, C, PALMONARI, F, POLINI, A, SARTORELLI, G, TIMELLINI, R, GARCIA, YZ, ZICHICHI, A, BARGENDE, A, BORNHEIM, A, CRITTENDEN, J, DESCH, K, DIEKMANN, B, DOEKER, T, ECKERT, M, FELD, L, FREY, A, GEERTS, M, GROTHE, M, HARTMANN, H, HEINLOTH, K, HILGER, E, JAKOB, HP, KATZ, UF, MENGEL, S, MOLLEN, J, PAUL, E, PFEIFFER, M, REMBSER, C, SCHRAMM, D, STAMM, J, WEDEMEYER, R, CAMPBELLROBSON, S, CASSIDY, A, DYCE, N, FOSTER, B, GEORGE, S, GILMORE, R, HEATH, GP, HEATH, HF, LLEWELLYN, TJ, MORGADO, CJS, NORMAN, DJP, OMARA, JA, TAPPER, RJ, WILSON, SS, YOSHIDA, R, PAU, RR, ARNEODO, M, CAPUA, M, GARFAGNINI, A, IANNOTTI, L, SCHIOPPA, M, SUSINNO, G, BERNSTEIN, A, CALDWELL, A, CARTIGLIA, N, PARSONS, JA, RITZ, S, SCIULLI, F, STRAUB, PB, WAI, L, YANG, S, ZHU, Q, BORZEMSKI, P, CHWASTOWSKI, J, ESKREYS, A, PIOTRZKOWSKI, K, ZACHARA, M, ZAWIEJSKI, L, ADAMCZYK, L, BEDNAREK, B, JELEN, K, KISIELEWSKA, D, KOWALSKI, T, RULIKOWSKAZAREBSKA, E, SUSZYCKI, L, ZAJAC, J, KOTANSKI, A, PRZYBYCIEN, M, BAUERDICK, LAT, BEHRENS, U, BEIER, H, BIENLEIN, JK, COLDEWEY, C, DEPPE, O, DESLER, K, DREWS, G, FLASINSKI, M, GILKINSON, DJ, GLASMAN, C, GOTTLICHER, P, GROSSEKNETTER, J, GUTJAHR, B, HAAS, T, HAIN, W, HASELL, D, HESSLING, H, IGA, Y, JOHNSON, K, JOOS, P, KASEMANN, M, KLANNER, R, KOCH, W, KOPKE, L, KOTZ, U, KOWALSKI, H, LABS, J, LADAGE, A, LOHR, B, LOWE, M, LUKE, D, MAINUSCH, J, MANCZAK, O, MONTEIRO, T, NG, JST, NICKEL, S, NOTZ, D, OHRENBERG, K, ROCO, M, ROHDE, M, ROLDAN, J, SCHNEEKLOTH, U, SCHULZ, W, SELONKE, F, STILIARIS, E, SURROW, B, VOSS, T, WESTPHAL, D, WOLF, G, YOUNGMAN, C, ZEUNER, W, ZHOU, JF, GRABOSCH, HJ, KHARCHILAVA, A, LEICH, A, MATTINGLY, MCK, MARI, SM, MEYER, A, SCHLENSTEDT, S, WULFF, N, BARBAGLI, G, PELFER, P, ANZIVINO, G, MACCARRONE, G, DEPASQUALE, S, VOTANO, L, BAMBERGER, A, EISENHARDT, S, FREIDHOF, A, SOLDNERREMBOLD, S, SCHROEDER, J, TREFZGER, T, BROOK, NH, BUSSEY, PJ, DOYLE, AT, SAXON, DH, UTLEY, ML, WILSON, AS, DANNEMANN, A, HOLM, U, HORSTMANN, D, NEUMANN, T, SINKUS, R, WICK, K, BADURA, E, BUROW, BD, HAGGE, L, LOHRMANN, E, MILEWSKI, J, NAKAHATA, M, PAVEL, N, POELZ, G, SCHOTT, W, ZETSCHE, F, BACON, TC, BRUEMMER, N, BUTTERWORTH, I, GALLO, E, HARRIS, VL, HUNG, BYH, LONG, KR, MILLER, DB, MORAWITZ, PPO, PRINIAS, A, SEDGBEER, JK, WHITFIELD, AF, MALLIK, U, MCCLIMENT, E, WANG, MZ, WANG, SM, WU, JT, CLOTH, P, FILGES, D, AN, SH, HONG, SM, NAM, SW, PARK, SK, SUH, MH, YON, SH, IMLAY, R, KARTIK, S, KIM, HJ, MCNEIL, RR, METCALF, W, NADENDLA, VK, BARREIRO, F, CASES, G, FERNANDEZ, JP, GRACIANI, R, HERNANDEZ, JM, HERVAS, L, LABARGA, L, MARTINEZ, M, DELPESO, J, PUGA, J, TERRON, J, DETROCONIZ, JF, SMITH, GR, CORRIVEAU, F, HANNA, DS, HARTMANN, J, HUNG, LW, LIM, JN, MATTHEWS, CG, PATEL, PM, SINCLAIR, LE, STAIRS, DG, LAURENT, MS, ULLNANN, R, ZACEK, G, BASHKIROV, V, DOLGOSHEIN, BA, STIFULKIN, A, BASHINDZHAGYAN, GL, ERMOLOV, PF, GLADILIN, LK, GOLUBKOV, YA, KOBRIN, VD, KORZHAVINA, IA, KUZMIN, VA, LUKINA, OY, PROSKURYAKOV, AS, SAVIN, AA, SHCHEGLOVA, LM, SOLOMIN, AN, ZOTOV, NP, BOTJE, M, CHLEBANA, F, DAKE, A, ENGELEN, J, DEKAMPS, M, KOOIJMAN, P, KRUSE, A, TIECKE, H, VERKERKE, W, VREESWIJK, M, WIGGERS, L, DEWOLF, E, VANWOUDENBERG, R, ACOSTA, D, BYLSMA, B, DURKIN, LS, GILMORE, J, HONSCHEID, K, LI, C, LING, TY, MCLEAN, KW, MURRAY, WN, NYLANDER, P, PARK, IH, ROMANOWSKI, TA, SEIDLEIN, R, BAILEY, DS, BYRNE, A, CASHMERE, RJ, COOPERSARKAR, AM, DEVENISH, RCE, HARNEW, N, LANCASTER, M, LINDEMANN, L, MCFALL, JD, NATH, C, NOYES, VA, QUADT, A, TICKNER, JR, UIJTERWAAL, H, WALCZAK, R, WATERS, DS, WILSON, FF, YIP, T, ABBIENDI, G, BERTOLIN, A, BRUGNERA, R, CARLIN, R, DALCORSO, F, DEGIORGI, M, DOSSELLI, U, LIMENTANI, S, MORANDIN, M, POSOCCO, M, STANCO, L, STROILI, R, VOCI, C, BULMAHN, J, BUTTERWORTH, JM, FEILD, RG, OH, BY, WHITMORE, JJ, DAGOSTINI, G, MARINI, G, NIGRO, A, TASSI, E, HART, JC, MCCUBBIN, NA, PRYTZ, K, SHAH, TP, SHORT, TL, BARBERIS, E, DUBBS, T, HEUSCH, C, VANHOOK, M, LOCKMAN, W, RAHN, JT, SADROZINSKI, HFW, SEIDEN, A, WILLIAMS, DC, BILTZINGER, J, SEIFERT, RJ, SCHWARZER, O, WALENTA, AH, ZECH, G, ABRAMOWICZ, H, BRISKIN, G, DAGAN, S, LEVY, A, FLECK, JI, HASEGAWA, T, HAZUMI, M, ISHII, T, KUZE, M, MINE, S, NAGASAWA, Y, NAKAO, M, SUZUKI, I, TOKUSHUKU, K, YAMADA, S, YAMAZAKI, Y, CHIBA, M, HAMATSU, R, HIROSE, T, HOMMA, K, KITAMURA, S, NAKAMITSU, Y, YAMAUCHI, K, CIRIO, R, COSTA, M, FERRERO, MI, LAMBERTI, L, MASELLI, S, PERONI, C, SACCHI, R, SOLANO, A, STAIANO, A, DARDO, M, BAILEY, DC, BANDYOPADHYAY, D, BENARD, F, BRKIC, M, GINGRICH, DM, HARTNER, GF, JOE, KK, LEVMAN, GM, MARTIN, JF, ORR, RS, POLENZ, S, SAMPSON, CR, TEUSCHER, RJ, CATTERALL, CD, JONES, TW, KAZIEWICZ, PB, LANE, JB, SAUNDERS, RL, SHULMAN, J, BLANKENSHIP, K, LU, B, MO, LW, BOGUSZ, W, CHARCHULA, K, CIBOROWSKI, J, GAJEWSKI, J, GRZELAK, G, KASPRZAK, M, KRZYZANOWSKI, M, MUCHOROWSKI, K, NOWAK, RJ, PAWLAK, JM, SMIENIECKA, T, WROBLEWSKI, AK, ZAKRZEWSKI, JA, ZARNECKI, AF, ADAMUS, M, EISENBERG, Y, KARSHON, U, REVEL, D, ZERZION, D, ALI, I, BADGETT, WF, BEHRENS, B, DASU, S, FORDHAM, C, FOUDAS, C, GOUSSIOU, A, LOVELESS, RJ, REEDER, DD, SILVERSTEIN, S, SMITH, WH, VAICIULIS, A, WODARCZYK, M, TSURUGAI, T, BHADRA, S, CARDY, ML, FAGERSTROEM, CP, FRISKEN, WR, FURUTANI, KM, KHAKZAD, M, and SCHMIDKE, WB
Subjects: Science & Technology, CONSTRUCTION, LUND MONTE-CARLO, hep-ex, Physics, HIGH-ENERGY PHOTOPRODUCTION, ZEUS BARREL CALORIMETER, HYDROGEN, Nuclear & Particles Physics, CENTRAL TRACKING DETECTOR, Physics, Particles & Fields, MUON-PROTON-SCATTERING, PHOTON, HADRONIC PROPERTIES, Physical Sciences, DEEP INELASTIC-SCATTERING
Published: 1995

18. MEASUREMENT OF THE PROTON STRUCTURE-FUNCTION F2 FROM THE 1993 HERA DATA

Author: Derrick, M., Krakauer, D., Magill, S., Musgrave, B., Repond, J., Schlereth, J., Stanek, R., Talaga, Rl, Thron, J., Arzarello, F., Ayad, R., Bari, G., Basile, M., Bellagamba, L., Boscherini, D., Bruni, A., Bruni, G., Bruni, P., Romeo, Gc, Castellini, G., Chiarini, M., Cifarelli, L., Cindolo, F., Ciralli, F., Contin, A., Dauria, S., Frasconi, F., Giusti, P., Iacobucci, G., Laurenti, G., Levi, G., Margotti, A., Massam, T., Nania, R., Nemoz, C., Palmonari, F., Polini, A., Sartorelli, G., Timellini, R., Garcia, Yz, Zichichi, A., Bargende, A., Crittenden, J., Desch, K., Diekmann, B., Doeker, T., Feld, L., Frey, A., Geerts, M., Geitz, G., Grothe, M., Hartmann, H., Haun, D., Heinloth, K., Hilger, E., Jakob, Hp, Katz, Uf, Mari, Sm, Mass, A., Mengel, S., Mollen, J., Paul, E., Rembser, C., Schattevoy, R., Schneider, Jl, Schramm, D., Stamm, J., Wedemeyer, R., Campbellrobson, S., Cassidy, A., Dyce, N., Foster, B., George, S., Gilmore, R., Heath, Gp, Heath, Hf, Llewellyn, Tj, Morgado, Cjs, Norman, Djp, Omara, Ja, Tapper, Rj, Wilson, Ss, Yoshida, R., Rau, Rr, Arneodo, M., Iannotti, L., Schioppa, M., Susinno, G., Bernstein, A., Caldwell, A., Gialas, I., Parsons, Ja, Ritz, S., Sciulli, F., Straub, Pb, Wai, L., Yang, S., Borzemski, P., Chwastowski, J., Eskreys, A., Piotrzkowski, K., Zachara, M., Leszek Zawiejski, Adamczyk, L., Bednarek, B., Eskreys, K., Jelen, K., Kisielewska, D., Kowalski, T., Rulikowskazarebska, E., Suszycki, L., Zajac, J., Kedzierski, T., Kotanski, A., Przybycien, M., Bauerdick, Lat, Behrens, U., Bienlein, Jk, Bottcher, S., Coldewey, C., Drews, G., Flasinski, M., Gilkinson, Dj, Gottlicher, P., Gutjahr, B., Haas, T., Hagge, L., Hain, W., Hasell, D., Hessling, H., Hultschig, H., Iga, Y., Joos, P., Kasemann, M., Klanner, R., Koch, W., Kopke, L., Kotz, U., Kowalski, H., Kroger, W., Kruger, J., Labs, J., Ladage, A., Lohr, B., Lowe, M., Luke, D., Mainusch, J., Manczak, O., Ng, Jst, Nickel, S., Notz, D., Ohrenberg, K., Roco, M., Rohde, M., Roldan, J., Schneekloth, U., Schulz, W., Selonke, F., Stiliaris, E., Voss, T., Westphal, D., Wolf, G., Youngman, C., Grabosch, Hj, Leich, A., Meyer, A., Rethfeldt, C., Schlenstedt, S., Barbagli, G., Pelfer, P., Anzivino, G., Maccarrone, G., Depasquale, S., Qian, S., Votano, L., Bamberger, A., Freidhof, A., Poser, T., Soldnerrembold, S., Schroeder, J., Theisen, G., Trefzger, T., Brook, Nh, Bussey, Pj, Doyle, At, Fleck, I., Jamieson, Va, Saxon, Dh, Utley, Ml, Wilson, As, Dannemann, A., Holm, U., Horstmann, D., Kammerlocher, H., Krebs, B., Neumann, T., Sinkus, R., Wick, K., Badura, E., Burow, Bd, Furtjes, A., Lohrmann, E., Milewski, J., Nakahata, M., Pavel, N., Poelz, G., Schott, W., Terron, J., Zetsche, F., Bacon, Tc, Beuselinck, R., Butterworth, I., Gallo, E., Harris, Vl, Hung, Bh, Long, Kr, Miller, Db, Morawitz, Ppo, Prinias, A., Sedgbeer, Jk, Whitfield, Af, Mallik, U., Mccliment, E., Wang, Mz, Zhang, Y., Cloth, P., Filges, D., An, Sh, Hong, Sm, Nam, Sw, Park, Sk, Suh, Mh, Yon, Sh, Imlay, R., Kartik, S., Kim, Hj, Mcneil, Rr, Metcalf, W., Nadendla, Vk, Barreiro, F., Cases, G., Graciani, R., Hernandez, Jm, Hervas, L., Labarga, L., Delpeso, J., Puga, J., Detroconiz, Jf, Ikraiam, F., Mayer, Jk, Smith, Gr, Corriveau, F., Hanna, Ds, Hartmann, J., Hung, Lw, Lim, Jn, Matthews, Cg, Mitchell, Jw, Patel, Pm, Sinclair, Le, Stairs, Dg, Stlaurent, M., Ullmann, R., Bashkirov, V., Dolgoshein, Ba, Stifutkin, A., Bashindzhagyan, Gl, Ermolov, Pf, Gladilin, Lk, Golubkov, Ya, Kobrin, Vd, Kuzmin, Va, Proskuryakov, As, Savin, Aa, Shcheglova, Lm, Solomin, An, Zotov, Np, Bentvelsen, S., Botje, M., Chlebana, F., Dake, A., Engelen, J., Dejong, P., Dekamps, M., Kooijman, P., Kruse, A., Odell, V., Tenner, A., Tiecke, H., Verkerke, W., Vreeswijk, M., Wiggers, L., Dewolf, E., Vanwoudenberg, R., Acosta, D., Bylsma, B., Durkin, Ls, Honscheid, K., Li, C., Ling, Ty, Mclean, Kw, Murray, Wn, Park, Ih, Romanowski, Ta, Seidlein, R., Bailey, Ds, Blair, Ga, Byrne, A., Cashmore, Rj, Coopersarkar, Am, Daniels, D., Devenish, Rce, Harnew, N., Lancaster, M., Luffman, Pe, Lindemann, L., Mcfall, J., Nath, C., Quadt, A., Uijterwaal, H., Walczak, R., Wilson, Ff, Yip, T., Abbiendi, G., Bertolin, A., Brugnera, R., Carlin, R., Dalcorso, F., Degiorgi, M., Dosselli, U., Gasparini, F., Limentani, S., Morandin, M., Posocco, M., Stanco, L., Stroili, R., Voci, C., Bulmahn, J., Butterworth, Jm, Feild, Rg, Oh, By, Whitmore, Jj, Dagostini, G., Iori, M., Marini, G., Mattioli, M., Nigro, A., Tassi, E., Hart, Jc, Mccubbin, Na, Prytz, K., Shah, Tp, Short, Tl, Barberis, E., Cartiglia, N., Dubbs, T., Heusch, C., Vanhook, M., Hubbard, B., Lockman, W., Rahn, Jt, Sadrozinski, Hfw, Seiden, A., Biltzinger, J., Seifert, Rj, Walenta, Ah, Zech, G., Abramowicz, H., Briskin, G., Dagan, S., Levy, A., Hasegawa, T., Hazumi, M., Ishii, T., Kuze, M., Mine, S., Nagasawa, Y., Nagira, T., Nakao, M., Suzuki, I., Tokushuku, K., Yamada, S., Yamazaki, Y., Chiba, M., Hamatsu, R., Hirose, T., Homma, K., Kitamura, S., Nagayama, S., Nakamitsu, Y., Cirio, R., Costa, M., Ferrero, Mi, Lamberti, L., Maselli, S., Peroni, C., Sacchi, R., Solano, A., Staiano, A., Dardo, M., Bailey, Dc, Bandyopadhyay, D., Benard, F., Brkic, M., Crombie, Mb, Gingrich, Dm, Hartner, Gf, Joo, Kk, Levman, Gm, Martin, Jf, Orr, Rs, Sampson, Cr, Teuscher, Rj, Catterall, Cd, Jones, Tw, Kaziewicz, Pb, Lane, Jb, Saunders, Rl, Shulman, J., Blankenship, K., Kochocki, J., Lu, B., Mo, Lw, Bogusz, W., Charchula, K., Ciborowski, J., Gajewski, J., Grzelak, G., Kasprzak, M., Krzyzanowski, M., Muchorowski, K., Nowak, Rj, Pawlak, Jm, Tymieniecka, T., Wroblewski, Ak, Zakrzewski, Ja, Zarnecki, Af, Adamus, M., Eisenberg, Y., Glasman, C., Karshon, U., Revel, D., Shapira, A., Ali, I., Behrens, B., Dasu, S., Fordham, C., Foudas, C., Goussiou, A., Loveless, Rj, Reeder, Dd, Silverstein, S., Smith, Wh, Tsurugai, T., Bhadra, S., Frisken, Wr, and Furutani, Km
Subjects: DEEP-INELASTIC-SCATTERING, Physics, Particle physics, E+E-PHYSICS, Physics and Astronomy (miscellaneous), Proton, LUND MONTE-CARLO, Detector, Structure function, MUON SCATTERING, ZEUS, Elementary particle, GENERATED PARTON DISTRIBUTIONS, EP SCATTERING, JET FRAGMENTATION, CALORIMETER, HERA, Electron, Deep inelastic scattering, proton structure function, Nuclear physics, Particle acceleration, Engineering (miscellaneous)
Abstract: The ZEUS detector has been used to measure the proton structure function F2. During 1993 HERA collided 26.7 GeV electrons on 820 GeV protons. The data sample corresponds to an integrated luminosity of 0.54 pb-1, representing a twenty fold increase in statistics compared to that of 1992. Results are presented for 7
Published: 1995

19. NEUTRAL STRANGE PARTICLE-PRODUCTION IN DEEP-INELASTIC SCATTERING AT HERA

Author: Derrick, M., Krakauer, D., Magill, S., Mikunas, D., Musgrave, B., Repond, J., Stanek, R., Talaga, Rl, Zhang, H., Ayad, R., Bari, G., Basile, M., Bellagamba, L., Boscherini, D., Bruni, A., Bruni, G., Bruni, P., Romeo, Gc, Castellini, G., Chiarini, M., Cifarelli, L., Cindolo, F., Contin, A., Corradi, M., Gialas, I., Giusti, P., Iacobucci, G., Laurenti, G., Levi, G., Margotti, A., Massam, T., Nania, R., Nemoz, C., Palmonari, F., Pollini, A., Sartorelli, G., Timellini, R., Garcia, Yz, Zichichi, A., Bargende, A., Crittenden, J., Desch, K., Diekmann, B., Doeker, T., Eckert, M., Feld, L., Frey, A., Geerts, M., Geitz, G., Grothe, M., Haas, T., Hartmann, H., Heinloth, K., Hilger, E., Jakob, Hp, Katz, Uf, Mari, Sm, Mass, A., Mengel, S., Mollen, J., Paul, E., Rembser, C., Schramm, D., Stamm, J., Wedemeyer, R., Campbellrobson, S., Cassidy, A., Dyce, N., Foster, B., George, S., Gilmore, R., Heath, Gp, Heath, Hf, Llewellyn, Tj, Morgado, Cis, Norman, Djp, Omara, Ja, Tapper, Rj, Wilson, Ss, Yoshida, R., Rau, Rr, Arneodo, M., Iannotti, L., Schioppa, M., Susinno, G., Bernstein, A., Caldwell, A., Cartiglia, N., Parsons, Ja, Ritz, S., Sciulli, F., Straub, Pb, Wai, L., Yang, S., Zhu, Q., Borzemski, P., Chwastowski, J., Eskreys, A., Piotrzkowski, K., Zachara, M., Zawiejski, L., Adamczyk, L., Bednarek, B., Jelen, K., Kisielewska, D., Kowalski, T., Rulikowskazarebska, E., Suszycki, L., Zajac, J., Kotanski, A., Przybycien, M., Bauerdick, Lat, Behrens, U., Beier, H., Bienlein, Jk, Coldewey, C., Deppe, O., Desler, K., Drews, G., Flasinski, M., Gilkinson, Dj, Glasman, C., Gottlicher, P., Grosseknetter, J., Gutjahr, B., Hain, W., Hasell, D., Hessling, H., Iga, Y., Joos, P., Kasemann, M., Klanner, R., Koch, W., Kopke, L., Kotz, U., Kowalski, H., Labs, J., Ladage, A., Lohr, B., Lowe, M., Luke, D., Mainusch, J., Manczak, O., Monteiro, T., Ng, Jst, Nickel, S., Notz, D., Ohrenberg, K., Roco, M., Rohde, M., Roldan, J., Schneekloth, U., Schulz, W., Selonke, F., Stiliaris, E., Surrow, B., Voss, T., Westphal, D., Wolf, G., Youngman, C., Zhou, Jf, Grabosch, Hj, Kharchilava, A., Leich, A., Mattingly, Mck, Meyer, A., Schlenstedt, S., Wulff, N., Barbagli, G., Pelfer, P., Anzivino, G., Maccarrone, G., Depasquale, S., Votano, L., Bamberger, A., Eisenhardt, S., Freidhof, A., Soldnerrembold, S., Schroeder, J., Trefzger, T., Brook, Nh, Bussey, Pj, Doyle, At, Fleck, Ji, Saxon, Dh, Utley, Ml, Wilson, As, Dannemann, A., Holm, U., Horstmann, D., Neumann, T., Sinkus, R., Wick, K., Badura, E., Burow, Bd, Hagge, L., Lohrmann, E., Milewski, J., Nakahata, M., Pavel, N., Poelz, G., Schott, W., Zetsche, F., Bacon, Tc, Butterworth, I., Gallo, E., Harris, Vl, Hung, Byh, Long, Kr, Miller, Db, Morawitz, Ppo, Prinias, A., Sedgbeer, Jk, Whitfield, Af, Mallik, U., Mccliment, E., Wang, Mz, Wang, Sm, Wu, Jt, Zhang, Y., Cloth, P., Filges, D., An, Sh, Hong, Sm, Nam, Sw, Park, Sk, Suh, Mh, Yon, Sh, Imlay, R., Kartik, S., Kim, Hj, Mcneil, Rr, Metcalf, W., Nadendla, Vk, Barreiro, F., Cases, G., Fernandez, Jp, Graciani, R., Hernandez, Jm, Hervas, L., Labarga, L., Martinez, M., Delpeso, J., Puga, J., Terron, J., Detroconiz, Jf, Smith, Gr, Corriveau, F., Hanna, Ds, Hartmann, J., Hung, Lw, Lim, Jn, Matthews, Cg, Patel, Pm, Sinclair, Le, Stairs, Dg, Stlaurent, M., Ullmann, R., Zacek, G., Bashkirov, V., Dolgoshein, Ba, Stifutkin, A., Bashindzhagyan, Gl, Ermolov, Pf, Gladilin, Lk, Golubkov, Ya, Kobrin, Vd, Kuzmin, Va, Proskuryakov, As, Savin, Aa, Shcheglova, Lm, Solomin, An, Zotov, Np, Botje, M., Chlebana, F., Dake, A., Engelen, J., Dekamps, M., Kooijman, P., Kruse, A., Tiecke, H., Verkerke, W., Vreeswijk, M., Wiggers, L., Dewolf, E., Vanwoudenberg, R., Acosta, D., Bylsma, B., Durkin, Ls, Honscheid, K., Li, C., Ling, Ty, Mclean, Kw, Murray, Wn, Park, Ih, Romanowski, Ta, Seidlein, R., Bailey, Ds, Byrne, A., Cashmore, Rj, Coopersarkar, Am, Devenish, Rce, Harnew, N., Lancaster, M., Lindemann, L., Mcfall, Jd, Nath, C., Noyes, Va, Quadt, A., Tickner, Jr, Uijterwaal, H., Walczak, R., Waters, Ds, Wilson, Ff, Yip, T., Abbiendi, G., Bertolin, A., Brugnera, R., Carlin, R., Dalcorso, F., Degiorgi, M., Dosselli, U., Limentani, S., Morandin, M., Posocco, M., Stanco, L., Stroili, R., Voci, C., Bulmahn, J., Butterworth, Jm, Feild, Rg, Oh, By, Whitmore, Jj, Dagostini, G., Marini, G., Nigro, A., Enrico TASSI, Hart, Jc, Mccubbin, Na, Prytz, K., Shah, Tp, Short, Tl, Barberis, E., Dubbs, T., Heusch, C., Vanhook, M., Hubbard, B., Lockman, W., Rahn, Jt, Sadrozinski, Hfw, Seiden, A., Biltzinger, J., Seifert, Rj, Schwarzer, O., Walenta, Ah, Zech, G., Abramowicz, H., Briskin, G., Dagan, S., Levy, A., Hasegawa, T., Hazumi, M., Ishii, T., Kuze, M., Mine, S., Nagasawa, Y., Nakao, M., Suzuki, I., Tokushuku, K., Yamada, S., Yamazaki, Y., Chiba, M., Hamatsu, R., Hirose, T., Homma, K., Kitamura, S., Nakamitsu, Y., Yamauchi, K., Cirio, R., Costa, M., Ferrero, Mi, Lamberti, L., Maselli, S., Peroni, C., Sacchi, R., Solano, A., Staiano, A., Dardo, M., Bailey, Dc, Bandyopadhyay, D., Benard, F., Brkic, M., Crombie, Mb, Gingrich, Dm, Hartner, Gf, Joo, Kk, Levman, Gm, Martin, Jf, Orr, Rs, Sampson, Cr, Teuscher, Rj, Catterall, Cd, Jones, Tw, Kaziewicz, Pb, Lane, Jb, Saunders, Rl, Shulman, J., Blankenship, K., Lu, B., Mo, Lw, Bogusz, W., Charchula, K., Gajewski, J., Grzelak, G., Kasprzak, M., Krzyzanowski, M., Muchorowski, K., Nowak, Rj, Pawlak, Jm, Tymieniecka, T., Wroblewski, Ak, Zakizewski, Ja, Zarnecki, Af, Adamus, M., Eisenberg, Y., Karshon, U., Revel, D., Zerzion, D., Ali, I., Badgett, Wf, Behrens, B., Dasu, S., Fordham, C., Foudas, C., Goussiou, A., Loveless, Rj, Reeder, Dd, Silvertsein, S., Smith, Wh, Vaiciulis, A., Wodarczyk, M., Tsurugai, T., Bhadra, S., Cardy, Ml, Fagerstroem, Cp, Frisken, Wr, Furutani, Km, Khakzad, M., and Schmidke, Wb
Subjects: Quark, Strange quark, Particle physics, HIGH-ENERGY, E+E ANNIHILATION, Physics and Astronomy (miscellaneous), Proton, CHARGED-CURRENT INTERACTIONS, PARTON DISTRIBUTIONS, POMERON STRUCTURE, ZEUS, CALORIMETER, JET, FRAGMENTATION, SUPPRESSION, FOS: Physical sciences, Inelastic scattering, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), deep inelastic scattering, neutral particle production, 0103 physical sciences, 010306 general physics, Nuclear Experiment, Engineering (miscellaneous), Physics, Neutral current, 010308 nuclear & particles physics, HERA, Deep inelastic scattering, Charged particle, High Energy Physics::Experiment
Abstract: This paper presents measurements of \k\ and \lam\ production in neutral current, deep inelastic scattering of 26.7 GeV electrons and 820 GeV protons in the kinematic range $ 10 < Q^{2} < 640 $ GeV$^2$, $0.0003 < x < 0.01$, and $y > 0.04$. Average multiplicities for \k\ and \lam\ production are determined for transverse momenta \ \ptr\ $> 0.5 $ GeV and pseudorapidities $\left| ��\right| < 1.3$. The multiplicities favour a stronger strange to light quark suppression in the fragmentation chain than found in $e^+ e^-$ experiments. The production properties of \k's in events with and without a large rapidity gap with respect to the proton direction are compared. The ratio of neutral \k's to charged particles per event in the measured kinematic range is, within the present statistics, the same in both samples., 27 pages, latex 8 figures appended as uuencoded file
Published: 1995

20. Measurement of the diffractive structure function in deep inelastic scattering at HERA

Author: Derrick, M., Krakauer, D., Magill, S., Mikunas, D., Musgrave, B., Repond, J., Stanek, R., Talaga, Rl, Zhang, H., Ayad, R., Giacomo Bari, Basile, M., Bellagamba, L., Boscherini, D., Bruni, A., Bruni, G., Bruni, P., Romeo, Gc, Castellini, G., Chiarini, M., Cifarelli, L., Cindolo, F., Contin, A., Corradi, M., Gialas, I., Giusti, P., Iacobucci, G., Laurenti, G., Levi, G., Margotti, A., Massam, T., Nania, R., Nemoz, C., Palmonari, F., Polini, A., Sartorelli, G., Timellini, R., Garcia, Yz, Zichichi, A., Bargende, A., Crittenden, J., Desch, K., Diekmann, B., Doeker, T., Eckert, M., Feld, L., Frey, A., Geerts, M., Geitz, G., Grothe, M., Hartmann, H., Heinloth, K., Hilger, E., Jakob, Hp, Katz, Uf, Mari, Sm, Mass, A., Mengel, S., Mollen, J., Paul, E., Rembser, C., Schramm, D., Stamm, J., Wedemeyer, R., Campbellrobson, S., Cassidy, A., Dyce, N., Foster, B., George, S., Gilmore, R., Heath, Gp, Heath, Hf, Llewellyn, Tj, Morgado, Cjs, Norman, Djp, Omara, Ja, Tapper, Rj, Wilson, Ss, Yoshida, R., Rau, Rr, Arneodo, M., Capua, M., Garfagnini, A., Iannotti, L., Schioppa, M., Susinno, G., Bernstein, A., Caldwell, A., Cartiglia, N., Parsons, Ja, Ritz, S., Sciulli, F., Straub, Pb, Wai, L., Yang, S., Zhu, Q., Borzemski, P., Chwastowski, J., Eskreys, A., Piotrzkowski, K., Zachara, M., Zawiejski, L., Adamczyk, L., Bednarek, B., Jelen, K., Kisielewska, D., Kowalski, T., Rulikowskazarebska, E., Suszycki, L., Zajac, J., Kotanski, A., Przybycien, M., Bauerdick, Lat, Behrens, U., Beier, H., Bienlein, Jk, Coldewey, C., Deppe, O., Desler, K., Drews, G., Flasinski, M., Gilkinson, Dj, Glasman, C., Gottlicher, P., Grosseknetter, J., Gutjahr, B., Haas, T., Hain, W., Hasell, D., Hessling, H., Iga, Y., Joos, P., Kasemann, M., Klanner, R., Koch, W., Kopke, L., Kotz, U., Kowalski, H., Labs, J., Ladage, A., Lohr, B., Lowe, M., Luke, D., Mainusch, J., Manczak, O., Monteiro, T., Ng, Jst, Nickel, S., Notz, D., Ohrenberg, K., Roco, M., Rohde, M., Roldan, J., Schneekloth, U., Schulz, W., Selonke, F., Stiliaris, E., Surrow, B., Voss, T., Westphal, D., Wolf, G., Youngman, C., Zhou, Jf, Grabosch, Hj, Kharchilava, A., Leich, A., Mattingly, Mck, Meyer, A., Schlenstedt, S., Wulff, N., Barbagli, G., Pelfer, P., Anzivino, G., Maccarrone, G., Depasquale, S., Votano, L., Bamberger, A., Eisenhardt, S., Freidhof, A., Soldnerrembold, S., Schroeder, J., Trefzger, T., Brook, Nh, Bussey, Pj, Doyle, At, Fleck, Ji, Saxon, Dh, Utley, Ml, Wilson, As, Dannemann, A., Holm, U., Horstmann, D., Neumann, T., Sinkus, R., Wick, K., Badura, E., Burow, Bd, Hagge, L., Lohrmann, E., Milewski, J., Nakahata, M., Pavel, N., Poelz, G., Schott, W., Zetsche, F., Bacon, Tc, Butterworth, I., Gallo, E., Harris, Vl, Hung, Byh, Long, Kr, Miller, Db, Morawitz, Ppo, Prinias, A., Sedgbeer, Jk, Whitfield, Af, Mallik, U., Mccliment, E., Wang, Mz, Wang, Sm, Wu, Jt, Zhang, Y., Cloth, P., Filges, D., An, Sh, Hong, Sm, Nam, Sw, Park, Sk, Suh, Mh, Yon, Sh, Imlay, R., Kartik, S., Kim, Hj, Mcneil, Rr, Metcalf, W., Nadendla, Vk, Barreiro, F., Cases, G., Fernandez, Jp, Graciani, R., Hernandez, Jm, Hervas, L., Labarga, L., Martinez, M., Delpeso, J., Puga, J., Terron, J., Detroconiz, Jf, Smith, Gr, Corriveau, F., Hanna, Ds, Hartmann, J., Hung, Lw, Lim, Jn, Matthews, Cg, Patel, Pm, Sinclair, Le, Stairs, Dg, Stlaurent, M., Ullmann, R., Zacek, G., Bashkirov, V., Dolgoshein, Ba, Stifutkin, A., Bashindzhagyan, Gl, Ermolov, Pf, Gladilin, Lk, Golubkov, Ya, Kobrin, Vd, Korzhavina, Ia, Kuzmin, Va, Lukina, Oy, Proskuryakov, As, Savin, Aa, Shcheglova, Lm, Solomin, An, Zotov, Np, Botje, M., Chlebana, F., Dake, A., Engelen, J., Dekamps, M., Kooijman, P., Kruse, A., Tiecke, H., Verkerke, W., Vreeswijk, M., Wiggers, L., Dewolf, E., Vanwoudenberg, R., Acosta, D., Bylsma, B., Durkin, Ls, Honscheid, K., Li, C., Ling, Ty, Mclean, Kw, Murray, Wn, Park, Ih, Romanowski, Ta, Seidlein, R., Bailey, Ds, Byrne, A., Cashmore, Rj, Coopersarkar, Am, Devenish, Rce, Harnew, N., Lancaster, M., Lindemann, L., Mcfall, Jd, Nath, C., Noyes, Va, Quadt, A., Tickner, Jr, Uijterwaal, H., Walczak, R., Waters, Ds, Wilson, Ff, Yip, T., Abbiendi, G., Bertolin, A., Brugnera, R., Carlin, R., Dalcorso, F., Degiorgi, M., Dosselli, U., Limentani, S., Morandin, M., Posocco, M., Stanco, L., Stroili, R., Voci, C., Bulmahn, J., Butterworth, Jm, Feild, Rg, Oh, By, Whitmore, Jj, Dagostini, G., Marini, G., Nigro, A., Tassi, E., Hart, Jc, Mccubbin, Na, Prytz, K., Shah, Tp, Short, Tl, Barberis, E., Dubbs, T., Heusch, C., Vanhook, M., Hubbard, B., Lockman, W., Rahn, Jt, Sadrozinski, Hfw, Seiden, A., Biltzinger, J., Seifert, Rj, Schwarzer, O., Walenta, Ah, Zech, G., Abramowicz, H., Briskin, G., Dagan, S., Levy, A., Hasegawa, T., Hazumi, M., Ishii, T., Kuze, M., Mine, S., Nagasawa, Y., Nakao, M., Suzuki, I., Tokushuku, K., Yamada, S., Yamazaki, Y., Chiba, M., Hamatsu, R., Hirose, T., Homma, K., Kitamura, S., Nakamitsu, Y., Yamauchi, K., Cirio, R., Costa, M., Ferrero, Mi, Lamberti, L., Maselli, S., Peroni, C., Sacchi, R., Solano, A., Staiano, A., Dardo, M., Bailey, Dc, Bandyopadhyay, D., Benard, F., Brkic, M., Crombie, Mb, Gingrich, Dm, Hartner, Gf, Joe, Kk, Levman, Gm, Martin, Jf, Orr, Rs, Sampson, Cr, Teuscher, Rj, Catterall, Cd, Jones, Tw, Kaziewicz, Pb, Lane, Jb, Saunders, Rl, Shulman, J., Blankenship, K., Lu, B., Mo, Lw, Bogusz, W., Charchula, K., Ciborowski, J., Gajewski, J., Grzelak, G., Kasprzak, M., Krzyzanowski, M., Muchorowski, K., Nowak, Rj, Pawlak, Jm, Tymieniecka, T., Wroblewski, Ak, Zakrzewski, Ja, Zamecki, Af, Adamus, M., Eisenberg, Y., Karshon, U., Revel, D., Zerzion, D., Ali, I., Badgett, Wf, Behrens, B., Dasu, S., Fordham, C., Foudas, C., Goussiou, A., Loveless, Rj, Reeder, Dd, Silverstein, S., Smith, Wh, Vaiciulis, A., Wodarczyk, M., Tsurugai, T., Bhadra, S., Cardy, Ml, Fagerstroem, Cp, Frisken, Wr, Furutani, Km, Khakzad, M., and Schmidke, Wb
Subjects: Quark, Particle physics, Physics and Astronomy (miscellaneous), structure functions, diffractive scattering, pomeron, LUND MONTE-CARLO, Hadron, FOS: Physical sciences, Inelastic scattering, 01 natural sciences, JET FRAGMENTATION, High Energy Physics - Experiment, CENTRAL TRACKING DETECTOR, POMERON STRUCTURE, E+E-PHYSICS, ZEUS, VERSION, DISSOCIATION, CALORIMETER, SINGULARITY, Nuclear physics, High Energy Physics - Experiment (hep-ex), Pomeron, 0103 physical sciences, Rapidity, 010306 general physics, Engineering (miscellaneous), Physics, 010308 nuclear & particles physics, HERA, Deep inelastic scattering, High Energy Physics::Experiment, Sum rule in quantum mechanics
Abstract: This paper presents an analysis of the inclusive properties of diffractive deep inelastic scattering events produced in $ep$ interactions at HERA. The events are characterised by a rapidity gap between the outgoing proton system and the remaining hadronic system. Inclusive distributions are presented and compared with Monte Carlo models for diffractive processes. The data are consistent with models where the pomeron structure function has a hard and a soft contribution. The diffractive structure function is measured as a function of $\xpom$, the momentum fraction lost by the proton, of $\beta$, the momentum fraction of the struck quark with respect to $\xpom$, and of $Q^2$. The $\xpom$ dependence is consistent with the form \xpoma where $a~=~1.30~\pm~0.08~(stat)~^{+~0.08}_{-~0.14}~(sys)$ in all bins of $\beta$ and $Q^2$. In the measured $Q^2$ range, the diffractive structure function approximately scales with $Q^2$ at fixed $\beta$. In an Ingelman-Schlein type model, where commonly used pomeron flux factor normalisations are assumed, it is found that the quarks within the pomeron do not saturate the momentum sum rule., Comment: 36 pages, latex, 11 figures appended as uuencoded file
Published: 1995

21. Axisymmetric time-dependent flow in the Taylor-Couette system

Author: Thorsten M. Buzug, U. Gerdts, Gerd Pfister, and von Stamm J
Subjects: Physics, Rotational symmetry, Time dependent flow, Mechanics
Published: 1994

22. Dijet cross sections in photoproduction at HERA

Author: David Bailey, Derrick, M., Krakauer, D., Magill, S., Mikunas, D., Musgrave, B., Repond, J., Stanek, R., Talaga, R. L., Zhang, H., Ayad, R., Bari, G., Basile, M., Bellagamba, L., Boscherini, D., Bruni, A., Bruni, G., Bruni, P., Cara Romeo, G., Castellini, G., Chiarini, M., Cifarelli, L., Cindolo, F., Contin, A., Corradi, M., Gialas, I., Giusti, P., Iacobucci, G., Laurenti, G., Levi, G., Margotti, A., Massam, T., Nania, R., Nemoz, C., Palmonari, F., Polini, A., Sartorelli, G., Timellini, R., Zamora Garcia, Y., Zichichi, A., Bargende, A., Crittenden, J., Desch, K., Diekmann, B., Doeker, T., Eckert, M., Feld, L., Frey, A., Geerts, M., Geitz, G., Grothe, M., Haas, T., Hartmann, H., Haun, D., Heinloth, K., Hilger, E., Jakob, H. P., Katz, U. F., Mari, S. M., Mass, A., Mengel, S., Mollen, J., Paul, E., Ch Rembser, Schattevoy, R., Schramm, D., Stamm, J., Wedemeyer, R., Campbell-Robson, S., Cassidy, A., Dyce, N., Foster, B., George, S., Gilmore, R., Heath, G. P., Heath, H. F., Llewellyn, T. J., Morgado, C. J. S., Norman, D. J. P., Mara, J. A. O., Tapper, R. J., Wilson, S. S., Yoshida, R., Rau, R. R., Arneodo, M., Iannotti, L., Schioppa, M., Susinno, G., Bernstein, A., Caldwell, A., Cartiglia, N., Parsons, J. A., Ritz, S., Sciulli, F., Straub, P. B., Wai, L., Yang, S., Zhu, Q., Borzemski, P., Chwastowski, J., Eskreys, A., Piotrzkowski, K., Zachara, M., Zawiejski, L., Adamczyk, L., Bednarek, B., Jeleń, K., Kisielewska, D., Kowalski, T., Rulikowska-Zarȩbska, E., Suszycki, L., Zaja̧c, J., Kotański, A., Przybycień, M., Bauerdick, L. A. T., Behrens, U., Beier, H., Bienlein, J. K., Coldewey, C., Deppe, O., Desler, K., Drews, G., Flasiński, M., Gilkinson, D. J., Glasman, C., Göttlicher, P., Große-Knetter, J., Gutjahr, B., Hain, W., Hasell, D., Heßling, H., Hultschig, H., Iga, Y., Joos, P., Kasemann, M., Klanner, R., Koch, W., Köpke, L., Kötz, U., Kowalski, H., Labs, J., Ladage, A., Löhr, B., Löwe, M., Lüke, D., Mańczak, O., Ng, J. S. T., Nickel, S., Notz, D., Ohrenberg, K., Roco, M., Rohde, M., Roldán, J., Schneekloth, U., Schulz, W., Selonke, F., Stiliaris, E., Surrow, B., Voß, T., Westphal, D., Wolf, G., Youngman, C., Zhou, J. F., Grabosch, H. J., Kharchilava, A., Leich, A., Mattingly, M., Meyer, A., Schlenstedt, S., Wulff, N., Barbagli, G., Pelfer, P., Anzivino, G., Maccarrone, G., Pasquale, S., Votano, L., Bamberger, A., Eisenhardt, S., Freidhof, A., Stefan Soldner-Rembold, Schroeder, J., Trefzger, T., Brook, N. H., Bussey, P. J., Doyle, A. T., Fleck, J. I., Saxon, D. H., Utley, M. L., Wilson, A. S., Dannemann, A., Holm, U., Horstmann, D., Neumann, T., Sinkus, R., Wick, K., Badura, E., Burow, B. D., Hagge, L., Lohrmann, E., Mainusch, J., Milewski, J., Nakahata, M., Pavel, N., Poelz, G., Schott, W., Zetsche, F., Bacon, T. C., Butterworth, I., Gallo, E., Harris, V. L., Hung, B. Y. H., Long, K. R., Miller, D. B., Morawitz, P. P. O., Prinias, A., Sedgbeer, J. K., Whitfield, A. F., Mallik, U., Mccliment, E., Wang, M. Z., Wang, S. M., Wu, J. T., Zhang, Y., Cloth, P., Filges, D., An, S. H., Hong, S. M., Nam, S. W., Park, S. K., Suh, M. H., Yon, S. H., Imlay, R., Kartik, S., Kim, H. J., Mcneil, R. R., Metcalf, W., Nadendla, V. K., Barreiro, F., Cases, G., Graciani, R., Hernández, J. M., Hervás, L., Labarga, L., Del Peso, J., Puga, J., Terron, J., Trocóniz, J. F., Smith, G. R., Corriveau, F., Hanna, D. S., Hartmann, J., Hung, L. W., Lim, J. N., Matthews, C. G., Patel, P. M., Sinclair, L. E., Stairs, D. G., St Laurent, M., Ullmann, R., Zacek, G., Bashkirov, V., Dolgoshein, B. A., Stifutkin, A., Bashindzhagyan, G. L., Ermolov, P. F., Gladilin, L. K., Golubkov, Y. A., Kobrin, V. D., Kuzmin, V. A., Proskuryakov, A. S., Savin, A. A., Shcheglova, L. M., Solomin, A. N., Zotov, N. P., Botje, M., Chlebana, F., Dake, A., Engelen, J., Kamps, M., Kooijman, P., Kruse, A., Tiecke, H., Verkerke, W., Vreeswijk, M., Wiggers, L., Wolf, E., Woudenberg, R., Acosta, D., Bylsma, B., Durkin, L. S., Honscheid, K., Li, C., Ling, T. Y., Mclean, K. W., Murray, W. N., Park, I. H., Romanowski, T. A., Seidlein, R., Bailey, D. S., Blair, G. A., Byrne, A., Cashmore, R. J., Cooper-Sarkar, A. M., Daniels, D., Devenish, R. C. E., Harnew, N., Lancaster, M., Luffman, P. E., Lindemann, L., Mcfall, J. D., Nath, C., Noyes, V. A., Quadt, A., Uijterwaal, H., Walczak, R., Wilson, F. F., Yip, T., Abbiendi, G., Bertolin, A., Brugnera, R., Carlin, R., Dal Corso, F., Giorgi, M., Dosselli, U., Limentani, S., Morandin, M., Posocco, M., Stanco, L., Stroili, R., Voci, C., Bulmahn, J., Butterworth, J. M., Feild, R. G., Oh, B. Y., Whitmore, J. J., Agostini, G. D., Marini, G., Nigro, A., Tassi, E., Hart, J. C., Mccubbin, N. A., Prytz, K., Shah, T. P., Short, T. L., Barberis, E., Dubbs, T., Heusch, C., Hook, M., Hubbard, B., Lockman, W., Rahn, J. T., Sadrozinski, H. F. W., Seiden, A., Biltzinger, J., Seifert, R. J., Walenta, A. H., Zech, G., Abramowicz, H., Briskin, G., Dagan, S., Levy, A., Hasegawa, T., Hazumi, M., Ishii, T., Kuze, M., Mine, S., Nagasawa, Y., Nakao, M., Suzuki, I., Tokushuku, K., Yamada, S., Yamazaki, Y., Chiba, M., Hamatsu, R., Hirose, T., Homma, K., Kitamura, S., Nakamitsu, Y., Yamauchi, K., Cirio, R., Costa, M., Ferrero, M. I., Lamberti, L., Maselli, S., Peroni, C., Sacchi, R., Solano, A., Staiano, A., Dardo, M., Bailey, D. C., Bandyopadhyay, D., Benard, F., Brkic, M., Crombie, M. B., Gingrich, D. M., Hartner, G. F., Joo, K. K., Levman, G. M., Martin, J. F., Orr, R. S., Sampson, C. R., Teuscher, R. J., Catterall, C. D., Jones, T. W., Kaziewicz, P. B., Lane, J. B., Saunders, R. L., Shulman, J., Blankenship, K., Kochocki, J., Lu, B., Mo, L. W., Bogusz, W., Charchula, K., Ciborowski, J., Gajewski, J., Grzelak, G., Kasprzak, M., Krzyzanowski, M., Muchorowski, K., Nowak, R. J., Pawlak, J. M., Tymieniecka, T., Wróblewski, A. K., Zakrzewski, J. A., Zarnecki, A. F., Adamus, M., Eisenberg, Y., Karshon, U., Revel, D., Zer-Zion, D., Ali, I., Badgett, W. F., Behrens, B., Dasu, S., Fordham, C., Foudas, C., Goussiou, A., Loveless, R. J., Reeder, D. D., Silverstein, S., Smith, W. H., Vaiciulis, A., Wodarczyk, M., Tsurugai, T., Bhadra, S., Cardy, M. L., Fagerstroem, C. P., Frisken, W. R., Furutani, K. M., Khakzad, M., Schmidke, W. B., and Zeus (IHEF, IoP, FNWI)
Subjects: Nuclear and High Energy Physics, Particle physics, Photon, Physics and Astronomy (miscellaneous), Proton, parton distributions, Astrophysics::High Energy Astrophysical Phenomena, Monte Carlo method, Hadron, dijet production, FOS: Physical sciences, Jet (particle physics), PROTON, 7. Clean energy, 01 natural sciences, Zeus (malware), High Energy Physics - Experiment, EVENTS, Nuclear physics, High Energy Physics - Experiment (hep-ex), MONTE-CARLO, 0103 physical sciences, ZEUS, BARREL CALORIMETER, PARTON DISTRIBUTIONS, HARD SCATTERING, PHOTON, QCD, Nuclear Experiment, 010306 general physics, Engineering (miscellaneous), Physics, Quantum chromodynamics, Jet (fluid), gluon content, CTEQ PARTON DISTRIBUTIONS, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, ZEUS BARREL CALORIMETER, HERA, CENTRAL TRACKING DETECTOR, HADRON-COLLISIONS, Pseudorapidity, High Energy Physics::Experiment
Abstract: Dijet cross sections are presented using photoproduction data obtained with the ZEUS detector during 1994. These measurements represent an extension of previous results, as the higher statistics allow cross sections to be measured at higher jet transverse energy (ETJ). Jets are identified in the hadronic final state using three different algorithms, and the cross sections compared to complete next-to-leading order QCD calculations. Agreement with these calculations is seen for the pseudorapidity dependence of the direct photon events with ETJ > 6 GeV and of the resolved photon events with ETJ > 11 GeV. Calculated cross sections for resolved photon processes with 6 GeV < ETJ < 11 GeV lie below the data., 30 pages including 5 figures. Includes a reference mistakenly omitted in previous version

23. Comparison of energy flows in deep inelastic scattering events with and without a large rapidity gap

Author: Derrick, Malcolm, Krakauer, D., Magill, Steve, Musgrave, Brian, Repond, Jose, Schlereth, J., Stanek, R., Talaga, R. L., Thron, J., Arzarello, F., Ayed, R., Bari, G., Basile, M., Bellagamba, Lorenzo, Boscherini, Davide, Bruni, Alessia, Bruni, Graziano, Bruni, P., Cara Romeo, G., Castellini, G., Chiarini, M., Cifarelli, L., Cindolo, Federico, Ciralli, F., Contin, A., D'Auria, S., Del Papa, C., Frasconi, F., Giusti, Paolo, Iacobucci, G., Laurenti, G., Levi, Giuseppe, Maccarrone, G., Margotti, A., Massam, T., Nania, Rosario, Nemoz, C., Palmonari, Federico, Polini, Alessandro, Sartorelli, Gabriel, Timellini, R., Zamora Garcia, Y., Zichichi, Antonio, Bargende, A., Crittenden, J., Desch, Klaus, Diekmann, B., Doeker, T., Feld, L., Frey, A., Geerts, M., Geitz, G., Grothe, M., Hartmann, H., Haun, D., Heinloth, K., Hilger, Erwin, Jakob, Hans-Peter, Katz, U. F., Mari, S. M., Mass, A., Mengel, S., Mollen, J., Paul, Ewald, Rembser, C., Schattevoy, R., Schneider, J. L., Schramm, D., Stamm, J., Wedemeyer, R., Campbell-Robson, S., Cassidy, A., Dyce, N., Foster, Brian, George, S., Gilmore, R., Heath, G. P., Heath, Helen F., Llewellyn, T. J., Morgado, C. J. S., Norman, D. J. P., O'Mara, J. A., Tapper, R. J., Wilson, S. S., Yoshida, R., Rau, R. R., Arneodo, Michele, Iannotti, L., Schioppa, Marco, Susinno, Giancarlo, Bernstein, A., Caldwell, Allen, Gialas, Ioannis, Parsons, J. A., Ritz, S., Sciulli, Frank, Straub, P. B., Wai, L., Yang, S., Borzemski, P., Chwastowski, Janusz, Eskreys, Andrzej, Piotrzkowski, Krzysztof, Zachara, M., Zawiejski, Leszek, Adamczyk, L., Bednarek, B., Eskreys, K., Jelen, K., Kisielewska, D., Kowalski, Tadeusz, Rulikowska-Zarebska, E., Suszycki, L., Zajac, J., Kedzierski, T., Kotanski, A., Przybycien, M., Bauerdick, L. A. T., Behrens, U., Bienlein, J. K., Bottcher, S., Coldewey, C., Drews, G., Flasinski, M., Gilkinson, D. J., Gottlicher, P., Gutjahr, B., Haas, Tobias, Hagge, L., Hain, W., Hasell, Douglas, Hessling, Hermann, Hultschig, H., Iga, Yoshihisa, Joos, P., Kasemann, M., Klanner, R., Koch, W., Kopke, L., Kotz, U., Kowalski, H., Kroger, W., Kruger, J., Labs, J., Ladage, A., Lohr, B., Lowe, M., Luke, D., Mainusch, J., Manczak, O., Ng, J. S. T., Nickel, S., Notz, Dieter, Ohrenberg, Kars, Roco, M., Rohde, M., Roldan, J., Schneekloth, U., Schroeder, J., Schulz, W., Selonke, F., Stiliaris, E., Voss, T., Westphal, D., Wolf, G., Youngman, C., Grabosch, H. J., Leich, Angelika, Meyer, A., Rethfeldt, C., Schlenstedt, Stefan, Barbagli, Guiseppe, Pelfer, Pier Giovanni, Anzivino, G., De Pasquale, S., Qian, S., Votano, L., Bamberger, Andreas, Freidhof, A., Poser, T., Soldner-Rembold, S., Theisen, G., Trefzger, T., Brook, Nick, Bussey, Peter, Doyle, A. T., Fleck, I., Forbes, J. R., Jamieson, V. A., Raine, C., Saxon, David, Stavrianakou, M., Wilson, A. S., Dannemann, A., Holm, U., Horstmann, D., Kammerlocher, H., Krebs, B., Neumann, T., Sinkus, R., Wick, K., Badura, E., Burow, B. D., Furtjes, A., Lohrmann, E., Milewski, J., Nakahata, M., Pavel, Nicolaie, Poelz, G., Schott, W., Terron, Juan, Zetsche, F., Bacon, T. C., Beuselinck, R., Butterworth, I., Gallo, E., Harris, V. L., Hung, B. H. Y., Long, Kenneth, Miller, D. B., Morawitz, P. P. O., Prinias, A., Sedgbeer, J. K., Whitfield, A., Mallik, U., McCliment, E., Wang, Min-Zu, zhang, Y., Cloth, P., Filges, D., An, S. H., Hong, S. M., Kim, C. O., Kim, T. Y., Nam, S. W., Park, S. K., Suh, M. H., Yon, S. H., Imlay, R., Kartik, S., Kim, Hyun-Jeong, McNeil, R. R., Metcalf, W., Nadendla, V. K., Barreiro, Fernando, Cases, G., Graciani, R., Hernandez, J. M., Hervas, L., Labarga, Luis, del Peso, J., Puga, J., de Troconiz, J. F., Ikraiam, F., Mayer, J. K., Smith, G. R., Corriveau, Francois, Hanna, D. S., Hartmann, J., Hung, L. W., Lim, J. N., Matthews, C., Mitchell, J. W., Patel, P. M., Sinclair, L. E., Stairs, D. G., St. Laurent, M., Ullmann, R., Bashkirov, V., Dolgoshein, Boris, Stifutkin, A., Bashindzhagian, G. L., Ermolov, P. F., Gladilin, Leonid, Golubkov, Yury, Kobrin, V. D. D., Kuzmin, V. A., Proskuryakov, Alexander, Savin, A. A., Shcheglova, L. M., Solomin, A. N., Zotov, N. P., Bentvelsen, S., Botje, Michiel, Chlebana, F., Dake, A., Engelen, J., de Jong, P., de Kamps, M., Kooijman, Paul, Kruse, A., O'Dell, V., Tenner, A., Tiecke, H., Verkerke, W., Vreeswijk, M., Wiggers, Leo, de Wolf, E., van Woudenberg, R., Acosta, D., Bylsma, B., Durkin, L. S., Honscheid, K., Li, C., Ling, T. Y., McLean, K. W., Murray, W. N., Park, I. H., Romanowski, T. A., Seidlein, R., Bailey, David C., Blair, Graham, Byrne, A., Cashmore, R. J., Cooper-Sarkar, Amanda, Daniels, D., Devenish, Robin, Harnew, N., Lancaster, M., Luffman, P., McFall, J., Nath, C., Quadt, A., Uijterwaal, H., Walczak, Roman, Wilson, F. F., Yip, T., Abbiendi, Giovanni, Bertolin, Alessandro, Brugnera, Riccardo, Carlin, Roberto, Dal Corso, Flavio, De Giorgi, M., Dosselli, Umberto, Gasparini, F., Limentani, Silvia, Morandin, Mauro, Posocco, Mario, Stanco, Luca, Stroili, R., Voci, C., Bulmahn, J., Butterworth, Jonathan, Feild, R. G., Oh, B. Y., Whitmore, J., D'Agostini, G., Guida, M., Iori, M., Marini, Giuseppe, Mattioli, M., Nigro, Andrea, Hart, J. C., McCubbin, N. A., Prytz, K., Shah, T. P., Short, T. L., Barberis, E., Cartiglia, N., Dubbs, T., Heusch, C., Van Hook, M., Hubbard, B., Lockman, William S., Sadrozinski, H. F., Seiden, A., Biltzinger, J., Seifert, R. J., Walenta, A. H., Zech, Gunter, Abramowicz, Halina, Dagan, S., Levy, Aharon, Hasegawa, T., Hazumi, M., Ishii, T., Kuze, Masahiro, Mine, S., Nagasawa, Y., Nagira, T., Nakao, M., Suzuki, I., Tokushuku, Katsuo, Yamada, Sakue, Yamazaki, Yuji, Chiba, M., Hamatsu, R., Hirose, T., Homma, K., Kitamura, S., Nagayama, S., Nakamitsu, Y., Cirio, R., Costa, M., Ferrero, M. I., Lamberti, L., Maselli, S., Peroni, C., Sacchi, Roberto, Solano, Ada, Staiano, A., Dardo, M., Bandyopadhyay, D., Benard, F., Brkic, M., Crombie, M. B., Gingrich, D. M., Hartner, Gerd, Joo, K. K., Levman, G. M., Martin, John F., Orr, R. S., Sampson, Cortney R., Teuscher, R. J., Catterall, Corinna, Jones, T. W., Kaziewicz, P. B., Lane, J. B., Saunders, R. L., Shulman, J., Blankenship, K., Kochocki, J., Lu, B., Mo, L. W., Bogusz, W., Charchula, K., Ciborowski, Jacek, Gajewski, J., Grzelak, Grzegorz, Kasprzak, M., Krzyzanowski, M., Muchorowski, K., Nowak, R. J., Pawlak, J. M., Tymieniecka, Teresa, Wroblewski, A. K., Zakrzewski, Janusz Andrzej, Zarnecki, Aleksander Filip, Adamus, M., Eisenberg, Yehuda, Glasman, C., Karshon, U., Revel, D., Shapira, A., Ali, I., Behrens, B., Dasu, S., Fordham, C., Foudas, C., Goussiou, A., Loveless, R. J., Reeder, D. D., Silverstein, S., Smith, W. H., Tsurugai, Tatsumasa, Bhadra, Sampa, Frisken, William R., Furutani, K. M., ZEUS Collaboration, and Zeus (IHEF, IoP, FNWI)
Subjects: electron p [deep inelastic scattering], Parton, event shape analysis, 01 natural sciences, JET FRAGMENTATION, PARTON, deep inelastic scattering: electron p, hadron: multiple production, Nuclear Experiment, colliding beams [electron p], Physics, Quantum chromodynamics, Range (particle radiation), DESY DESY HERA Stor Stor, inelastic scattering, HERA, electron p [colliding beams], large rapidity gap, colliding beams: electron p, electron p: colliding beams, SIMULATION, rapidity dependence [energy flow], LUND MONTE-CARLO, E+E-PHYSICS, QCD, CALORIMETER, ZEUS, DISTRIBUTIONS, MODEL, electron p: deep inelastic scattering, Nuclear and High Energy Physics, Particle physics, gap [rapidity spectrum], 296 GeV-cms, Nuclear physics, 0103 physical sciences, Rapidity, energy flow: rapidity dependence, ddc:530, 010306 general physics, hadron [multiple production], multiple production [hadron], ZEUS (particle detector), 010308 nuclear & particles physics, Scattering, Deep inelastic scattering, multiple production: hadron, rapidity spectrum: gap, deep inelastic scattering [electron p], High Energy Physics::Experiment, experimental results
Abstract: Physics letters / B 338(4), 483-496 (1994). doi:10.1016/0370-2693(94)90804-4, Energy flows in deep inelastic electron-proton scattering are investigated at a centre-of-mass energy of 269 GeV for the range $Q^2 ≥ 10 \text{ GeV}^2$ using the ZEUS detector. A comparison is made between events with and without a large rapidity gap between the hadronic system and the proton direction. The energy flows, corrected for detector acceptance and resolution, are shown for these two classes of events in both the HERA laboratory frame and the Breit frame. From the differences in the shapes of these energy flows we conclude that QCD radiation is suppressed in the large-rapidity-gap eents compared to the events without a large rapidity gap., Published by North-Holland Publ., Amsterdam
Full Text: View/download PDF

24. Study of the photon remnant in resolved photoproduction at HERA

Author: David Bailey, Derrick, M., Krakauer, D., Magill, S., Mikunas, D., Musgrave, B., Repond, J., Stanek, R., Talaga, R. L., Zhang, H., Ayad, R., Bari, G., Basile, M., Bellagamba, L., Boscherini, D., Bruni, A., Bruni, G., Bruni, P., Cara Romeo, G., Castellini, G., Chiarini, M., Cifarelli, L., Cindolo, F., Contin, A., Corradi, M., Gialas, I., Giusti, P., Iacobucci, G., Laurenti, G., Levi, G., Margotti, A., Massam, T., Nania, R., Nemoz, C., Palmonari, F., Polini, A., Sartorelli, G., Timellini, R., Zamora Garcia, Y., Zichichi, A., Bargende, A., Crittenden, J., Desch, K., Diekmann, B., Docker, T., Eckert, M., Feld, L., Frey, A., Geerts, M., Geitz, G., Grothe, M., Haas, T., Hartmann, H., Heinloth, K., Hilger, E., Jakob, H. P., Katz, U. F., Mari, S. M., Mass, A., Mengel, S., Mollen, J., Paul, E., Ch Rembser, Schramm, D., Stamm, J., Wedemeyer, R., Campbell-Robson, S., Cassidy, A., Dyce, N., Foster, B., George, S., Gilmore, R., Heath, G. P., Heath, H. F., Llewellyn, T. J., Morgado, C. J. S., Norman, D. J. P., Mara, J. A. O., Tapper, R. J., Wilson, S. S., Yoshida, R., Rau, R. R., Arneodo, M., Iannotti, L., Schioppa, M., Susinno, G., Bernstein, A., Caldwell, A., Cartiglia, N., Parsons, J. A., Ritz, S., Sciulli, F., Straub, P. B., Wai, L., Yang, S., Zhu, Q., Borzemski, P., Chwastowski, J., Eskreys, A., Piotrzkowski, K., Zachara, M., Zawiejski, L., Adamczyk, L., Bednarek, B., Jeleń, K., Kisielewska, D., Kowalski, T., Rulikowska-Zarȩbska, E., Suszycki, L., Zaja̧c, J., Kotański, A., Przybycień, M., Bauerdick, L. A. T., Behrens, U., Beier, H., Bienlein, J. K., Coldewey, C., Deppe, O., Desler, K., Drews, G., Flasiński, M., Gilkinson, D. J., Glasman, C., Göttlicher, P., Große-Knetter, J., Gutjahr, B., Hain, W., Hasell, D., Heßling, H., Iga, Y., Joos, P., Kasemann, M., Klanner, R., Koch, W., Köpke, L., Kotz, U., Kowalski, H., Labs, J., Ladage, A., Löhr, B., Löwe, M., Luke, D., Mainusch, J., Mańczak, O., Monteiro, T., Ng, J. S. T., Nickel, S., Notz, D., Ohrenberg, K., Roco, M., Rohde, M., Roldán, J., Schneekloth, U., Schulz, W., Selonke, F., Stiliaris, E., Surrow, B., Voß, T., Westphal, D., Wolf, G., Youngman, C., Zhou, J. F., Grabosch, H. J., Kharchilava, A., Leich, A., Mattingly, M. C. K., Meyer, A., Schlenstedt, S., Wulff, N., Barbagli, G., Pelfer, P., Anzivino, G., Maccarrone, G., Pasquale, S., Votano, L., Bamberger, A., Eisenhardt, S., Freidhof, A., Stefan Soldner-Rembold, Schroeder, J., Trefzger, T., Brook, N. H., Bussey, P. J., Doyle, A. T., Fleck, J. J., Saxon, D. H., Utley, M. L., Wilson, A. S., Dannemann, A., Holm, U., Horstmann, D., Neumann, T., Sinkus, R., Wick, K., Badura, E., Burow, B. D., Hagge, L., Lohrmann, E., Milewski, J., Nakahata, M., Pavel, N., Poelz, G., Schott, W., Zetsche, F., Bacon, T. C., Butterworth, I., Gallo, E., Harris, V. L., Hung, B. Y. H., Long, K. R., Miller, D. B., Morawitz, P. P. O., Prinias, A., Sedgbeer, J. K., Whitfield, A. F., Mallik, U., Mccliment, E., Wang, M. Z., Wang, S. M., Wu, J. T., Zhang, Y., Cloth, P., Filges, D., An, S. H., Hong, S. M., Nam, S. W., Park, S. K., Suh, M. H., Yon, S. H., Imlay, R., Kartik, S., Kim, H. J., Mcneil, R. R., Metcalf, W., Nadendla, V. K., Barreiro, F., Cases, G., Fernandez, J. P., Graciani, R., Hernández, J. M., Hervás, L., Labarga, L., Martinez, M., Del Peso, J., Puga, J., Terron, J., Trocóniz, J. F., Smith, G. R., Corriveau, F., Hanna, D. S., Hartmann, J., Hung, L. W., Lim, J. N., Matthews, C. G., Patel, P. M., Sinclair, L. E., Stairs, D. G., St Laurent, M., Ullmann, R., Zacek, G., Bashkirov, V., Dolgoshein, B. A., Stifutkin, A., Bashindzhagyan, G. L., Ermolov, P. F., Gladilin, L. K., Golubkov, Y. A., Kobrin, V. D., Kuzmin, V. A., Proskuryakov, A. S., Savin, A. A., Shcheglova, L. M., Solomin, A. N., Zotov, N. P., Botje, M., Chlebana, F., Dake, A., Engelen, J., Kamps, M., Kooijman, P., Kruse, A., Tiecke, H., Verkerke, W., Vreeswijk, M., Wiggers, L., Wolf, E., Woudenberg, R., Acosta, D., Bylsma, B., Durkin, L. S., Honscheid, K., Li, C., Ling, T. Y., Mclean, K. W., Murray, W. N., Park, I. H., Romanowski, T. A., Seidlein, R., Bailey, D. S., Byrne, A., Cashmore, R. J., Cooper-Sarkar, A. M., Devenish, R. C. E., Harnew, N., Lancaster, M., Lindemann, L., Mcfall, J. D., Nath, C., Noyes, V. A., Quadt, A., Tickner, J. R., Uijterwaal, H., Walczak, R., Waters, D. S., Wilson, F. F., Yip, T., Abbiendi, G., Bertolin, A., Brugnera, R., Carlin, R., Dal Corso, F., Giorgi, M., Dosselli, U., Limentani, S., Morandin, M., Posocco, M., Stance, L., Stroili, R., Voci, C., Bulmahn, J., Butterworth, J. M., Feild, R. G., Oh, B. Y., Whitmore, J. J., Agostini, G. D., Marini, G., Nigro, A., Tassi, E., Hart, J. C., Mccubbin, N. A., Prytz, K., Shah, T. P., Short, T. L., Barberis, E., Dubbs, T., Heusch, C., Hook, M., Hubbard, B., Lockman, W., Rahn, J. T., Sadrozinski, H. F. W., Seiden, A., Biltzinger, J., Seifert, R. J., Schwarzer, O., Walenta, A. H., Zech, G., Abramowicz, H., Briskin, G., Dagan, S., Levy, A., Hasegawa, T., Hazumi, M., Ishii, T., Kuze, M., Mine, S., Nagasawa, Y., Nakao, M., Suzuki, I., Tokushuku, K., Yamada, S., Yamazaki, Y., Chiba, M., Hamatsu, R., Hirose, T., Homma, K., Kitamura, S., Nakamitsu, Y., Yamauchi, K., Cirio, R., Costa, M., Ferrero, M. I., Lamberti, L., Maselli, S., Peroni, C., Sacchi, R., Solano, A., Staiano, A., Dardo, M., Bailey, D. C., Bandyopadhyay, D., Benard, F., Brkic, M., Crombie, M. B., Gingrich, D. M., Hartner, G. F., Joo, K. K., Levman, G. M., Martin, J. F., Orr, R. S., Sampson, C. R., Teuscher, R. J., Catterall, C. D., Jones, T. W., Kaziewicz, P. B., Lane, J. B., Saunders, R. L., Shulman, J., Blankenship, K., Lu, B., Mo, L. W., Bogusz, W., Charchuła, K., Ciborowski, J., Gajewski, J., Grzelak, G., Kasprzak, M., Krzyzanowski, M., Muchorowski, K., Nowak, R. J., Pawlak, J. M., Tymieniecka, T., Wróblewski, A. K., Zakrzewski, J. A., Zarnecki, A. F., Adamus, M., Eisenberg, Y., Karshon, U., Revel, D., Zer-Zion, D., Ali, I., Badgett, W. F., Behrens, B., Dasu, S., Fordham, C., Foudas, C., Goussiou, A., Loveless, R. J., Reeder, D. D., Silverstein, S., Smith, W. H., Vaiciulis, A., Wodarczyk, M., Tsurugai, T., Bhadra, S., Cardy, M. L., Fagerstroem, C. P., Frisken, W. R., Furutani, K. M., Khakzad, M., Schmidke, W. B., and Zeus (IHEF, IoP, FNWI)
Subjects: Nuclear and High Energy Physics, Particle physics, Photon, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, high pt jets, photoproduction, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, COLLIDER, High Energy Physics - Experiment (hep-ex), GAMMA-P INTERACTIONS, MONTE-CARLO, DESIGN, 0103 physical sciences, Cluster (physics), 010306 general physics, Nuclear Experiment, Physics, DEEP-INELASTIC-SCATTERING, Research Groups and Centres\Physics\Low Temperature Physics, ZEUS (particle detector), CONSTRUCTION, 010308 nuclear & particles physics, Faculty of Science\Physics, Mean value, ZEUS, ZEUS BARREL CALORIMETER, HERA, PARTON DISTRIBUTIONS, HADRON-COLLISIONS, HARD SCATTERING, Transverse plane, Cathode ray, High Energy Physics::Experiment, Beam (structure)
Abstract: Photoproduction at HERA is studied in $ep$ collisions, with the ZEUS detector, for $\gamma p$ centre-of-mass energies ranging from 130-270 GeV. A sample of events with two high-$p_T$ jets ($p_T > 6$ GeV, $\eta, Comment: 14 pages, latex 4 figures appended as uuencoded file

25. Inclusive charged particle distributions in deep inelastic scattering events at HERA

Author: Derrick, M., Krakauer, D., Magill, S., Mikunas, D., Musgrave, B., Repond, J., Stanek, R., Talaga, R. L., Zhang, H., Bari, G., Basile, M., Bellagamba, L., Boscherini, D., Bruni, A., Bruni, G., Bruni, P., Cara Romeo, G., Castellini, G., Cifarelli, L., Cindolo, F., Contin, A., Corradi, M., Gialas, I., Giusti, P., Iacobucci, G., Laurenti, G., Levi, G., Margotti, A., Massam, T., Nania, R., Palmonari, F., Polini, A., Sartorelli, G., Zamora Garcia, Y., Zichichi, A., Bornheim, A., Crittenden, J., Desch, K., Diekmann, B., Doeker, T., Eckert, M., Feld, L., Frey, A., Geerts, M., Grothe, M., Hartmann, H., Heinloth, K., Heinz, L., Hilger, E., Jakob, H. -P, Katz, U. F., Mengel, S., Mollen, J., Paul, E., Pfeiffer, M., Rembser, Ch, Schramm, D., Stamm, J., Wedemeyer, R., Campbell-Robson, S., Cassidy, A., Cottingham, W. N., Dyce, N., Foster, B., George, S., Hayes, M. E., Heath, G. P., Heath, H. F., Morgado, C. J. S., O Mara, J. A., Piccioni, D., Roff, D. G., Tapper, R. J., Yoshida, R., Rau, R. R., Arneodo, M., Ayad, R., Capua, M., Garfagnini, A., Iannotti, L., Schioppa, M., Susinno, G., Bernstein, A., Caldwell, A., Cartiglia, N., Parsons, J. A., Ritz, S., Sciulli, F., Straub, P. B., Wai, L., Yang, S., Zhu, Q., Borzemski, P., Chwastowski, J., Eskreys, A., Piotrzkowski, K., Zachara, M., Zawiejski, L., Adamczyk, L., Bednarek, B., Jeleń, K., Kisielewska, D., Kowalski, T., Przybycień, M., Rulikowska-Zarçbska, E., Suszycki, L., Zaja̧c, J., Kotański, A., Bauerdick, L. A. T., Behrens, U., Beier, H., Bienlein, J. K., Coldevvey, C., Deppe, O., Desler, K., Drews, G., Flasiński, M., Gilkinson, D. J., Glasman, C., Göttlicher, P., Große-Knetter, J., Gutjahr, B., Haas, T., Hain, W., Hasell, D., Heßling, H., Iga, Y., Johnson, K. F., Joos, P., Kasemann, M., Klanner, R., Koch, W., Köpke, L., Kötz, U., Kowalski, H., Labs, J., Ladage, A., Löhr, B., Löwe, M., Lüke, D., Mainusch, J., Mańczak, O., Monteiro, T., Ng, J. S. T., Nickel, S., Notz, D., Ohrenberg, K., Roco, M., Rohde, M., Roldán, J., Schneekloth, U., Schulz, W., Selonke, F., Efstathios Stiliaris, Surrow, B., Voß, T., Westphal, D., Wolf, G., Youngman, C., Zeuner, W., Zhou, J. F., Grabosch, H. J., Kharchilava, A., Leich, A., Mari, S. M., Mattingly, M. C. K., Meyer, A., Schlenstedt, S., Wulff, N., Barbagli, G., Gallo, E., Pelfer, P., Maccarrone, G., Pasquale, S., Votano, L., Bamberger, A., Eisenhardt, S., Freidhof, A., Söldner-Rembold, S., Schroeder, J., Trefzger, T., Bromley, J. T., Brook, N. H., Bussey, P. J., Doyle, A. T., Saxon, D. H., Utley, M. L., Wilson, A. S., Dannemann, A., Holm, U., Horstmann, D., Neumann, T., Sinkus, R., Wick, K., Badura, E., Burow, B. D., Hagge, L., Lohrmann, E., Milewski, J., Nakahata, M., Pavel, N., Poelz, G., Schott, W., Zetsche, F., Bacon, T. C., Bruemmer, N., Butterworth, I., Harris, V. L., Hung, B. Y. H., Long, K. R., Miller, D. B., Morawitz, P. P. O., Prinias, A., Sedgbeer, J. K., Whitfield, A. F., Mallik, U., Mccliment, E., Wang, M. Z., Wang, S. M., Wu, J. T., Cloth, P., Filges, D., An, S. H., Cho, G. H., Ko, B. J., Lee, S. B., Nam, S. W., Park, H. S., Park, S. K., Imlay, R., Kartik, S., Kim, H. -J, Mcneil, R. R., Metcalf, W., Nadendla, V. K., Barreiro, F., Cases, G., Fernandez, J. P., Graciani, R., Hernández, J. M., Hervás, L., Labarga, L., Martinez, M., Del Peso, J., Puga, J., Terron, J., Trocóniz, J. F., Smith, G. R., Corriveau, F., Hanna, D. S., Hartmann, J., Hung, L. W., Lim, J. N., Matthews, C. G., Patel, P. M., Sinclair, L. E., Stairs, D. G., St Laurent, M., Ullmann, R., Zacek, G., Bashkirov, V., Dolgoshein, B. A., Stifutkin, A., Bashindzhagyan, G. L., Ermolov, P. F., Gladilin, L. K., Golubkov, Yu A., Kobrin, V. D., Korzhavina, I. A., Kuzmin, V. A., Lukina, O. Yu, Proskuryakov, A. S., Savin, A. A., Shcheglova, L. M., Solomin, A. N., Zotov, N. P., Botje, M., Chlebana, F., Dake, A., Engelen, J., Kamps, M., Kooijman, P., Kruse, A., Tiecke, H., Verkerke, W., Vreeswijk, M., Wiggers, L., Wolf, E., Woudenberg, R., Acosta, D., Bylsma, B., Durkin, L. S., Gilmore, J., Honscheid, K., Li, C., Ling, T. Y., Mclean, K. W., Nylander, P., Park, I. H., Romanowski, T. A., Seidlein, R., Bailey, D. S., Byrne, A., Cashmore, R. J., Cooper-Sarkar, A. M., Devenish, R. C. E., Harnew, N., Lancaster, M., Lindemann, L., Mcfall, J. D., Nath, C., Noyes, V. A., Quadt, A., Tickner, J. R., Uijterwaal, H., Walczak, R., Waters, D. S., Wilson, F. F., Yip, T., Abbiendi, G., Bertolin, A., Brugnera, R., Carlin, R., Dal Corso, F., Giorgi, M., Dosselli, U., Limentani, S., Morandin, M., Posocco, M., Stanco, L., Stroili, R., Voci, C., Bulmahn, J., Butterworth, J. M., Feild, R. G., Oh, B. Y., Okrasinski, J. R., Whitmore, J. J., D Agostini, G., Marini, G., Nigro, A., Tassi, E., Hart, J. C., Mccubbin, N. A., Prytz, K., Shah, T. P., Short, T. L., Barberis, E., Dubbs, T., Heusch, C., Hook, M., Lockman, W., Rahn, J. T., Sadrozinski, H. F. -W, Seiden, A., Williams, D. C., Biltzinger, J., Seifert, R. J., Schwarzer, O., Walenta, A. H., Zech, G., Abramowicz, H., Briskin, G., Dagan, S., Levy, A., Fleck, J. I., Hasegawa, T., Hazumi, M., Ishii, T., Kuze, M., Mine, S., Nagasawa, Y., Nakao, M., Suzuki, I., Tokushuku, K., Yamada, S., Yamazaki, Y., Chiba, M., Hamatsu, R., Hirose, T., Homma, K., Kitamura, S., Nakamitsu, Y., Yamauchi, K., Cirio, R., Costa, M., Ferrera, M. I., Lamberti, L., Maselli, S., Peroni, C., Sacchi, R., Solano, A., Staiano, A., Dardo, M., Bailey, D. C., Benard, F., Brkic, M., Hartner, G. F., Joo, K. K., Levman, G. M., Martin, J. F., Orr, R. S., Polenz, S., Sampson, C. R., Teuscher, R. J., Catterall, C. D., Jones, T. W., Kaziewicz, P. B., Lane, J. B., Saunders, R. L., Shulman, J., Blankenship, K., Lu, B., Mo, L. W., Bogusz, W., Charchuła, K., Ciborowski, J., Gajewski, J., Grzelak, G., Kasprzak, M., Krzyzanowski, M., Muchorowski, K., Nowak, R. J., Pawlak, J. M., Tymieniecka, T., Wróblewski, A. K., Zakrzewski, J. A., Zarnecki, A. F., Adamus, M., Eisenberg, Y., Karshon, U., Revel, D., Zer-Zion, D., Ali, I., Badgett, W. F., Behrens, B., Dasu, S., Fordham, C., Foudas, C., Goussiou, A., Loveless, R. J., Reeder, D. D., Silverstein, S., Smith, W. H., Vaiciulis, A., Wodarczyk, M., Tsurugai, T., Bhadra, S., Cardy, M. L., Fagerstroem, C. -P, Frisken, W. R., Khakzad, M., Murray, W. N., Schmidke, W. B., and ZEUS at HERA (IHEF, IoP, FNWI)
Subjects: Particle physics, Physics and Astronomy (miscellaneous), LUND MONTE-CARLO, FOS: Physical sciences, Parton, 01 natural sciences, JET FRAGMENTATION, High Energy Physics - Experiment, Nuclear physics, MUON-PROTON-SCATTERING, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, ZEUS, SIMULTANEOUS PATTERN-RECOGNITION, ZEUS BARREL CALORIMETER, KALMAN FILTERING METHOD, DIFFRACTION DISSOCIATION, TRANSVERSE-MOMENTUM, E+E-PHYSICS, HADRONS, 010306 general physics, Nuclear Experiment, Physics, Quantum chromodynamics, 010308 nuclear & particles physics, Momentum transfer, High Energy Physics::Phenomenology, Perturbative QCD, HERA, Deep inelastic scattering, Charged particle, Baryon, High Energy Physics::Experiment
Abstract: A measurement of inclusive charged particle distributions in deep inelastic $ep$ scattering for $\gamma^* p$ centre-of-mass energies $75< W < 175$~GeV and momentum transfer squared $10< Q^2 < 160$~GeV$^2$ from the ZEUS detector at HERA is presented. The differential charged particle rates in the $\gamma^* p$ centre-of-mass system as a function of the scaled longitudinal momentum, $x_F$, and of the transverse momentum, $p_t^*$ and $\,\,$ , as a function of $x_F$, $W$ and $Q^2$ are given. Separate distributions are shown for events with (LRG) and without (NRG) a rapidity gap with respect to the proton direction. The data are compared with results from experiments at lower beam energies, with the naive quark parton model and with parton models including perturbative QCD corrections. The comparison shows the importance of the higher order QCD processes. Significant differences of the inclusive charged particle rates between NRG and LRG events at the same $W$ are observed. The value of $\,\,$ for LRG events with a hadronic mass $M_X$, which excludes the forward produced baryonic system, is similar to the $\,\,$ value observed in fixed target experiments at $W \approx M_X$., Comment: 34 pages, latex, 9 figures appended as uuencoded file. Author list corrected

26. Event shape analysis of deep inelastic scattering events with a large rapidity gap at HERA

Author: Breitweg, J, Derrick, M, Krakauer, D, Magill, S, Mikunas, D, Musgrave, B, Repond, J, Stanek, R, Talaga, RL, Yoshida, R, Zhang, H, Mattingly, MCK, Anselmo, F, Antonioli, P, Bari, G, Basile, M, Bellagamba, L, Boscherini, D, Bruni, A, Bruni, G, Romeo, GC, Castellini, G, Cifarelli, L, Cindolo, F, Contin, A, Corradi, M, De Pasquale, S, Gialas, I, Giusti, P, Iacobucci, G, Laurenti, G, Levi, G, Margotti, A, Massam, T, Nania, R, Palmonari, F, Pesci, A, Polini, A, Ricci, F, Sartorelli, G, Garcia, YZ, Zichichi, A, Amelung, C, Bornheim, A, Brock, I, Coboken, K, Crittenden, J, Deffner, R, Eckert, M, Grothe, M, Hartmann, H, Heinloth, K, Heinz, L, Hilger, E, Jakob, HP, Katz, UF, Kerger, R, Paul, E, Pfeiffer, M, Rembser, C, Stamm, J, Wedemeyer, R, Wieber, H, Bailey, DS, Campbell-Robson, S, Cottingham, WN, Foster, B, Hall-Wilton, R, Hayes, ME, Heath, GP, Heath, HF, McFall, JD, Piccioni, D, Roff, DG, Tapper, RJ, Arneodo, M, Ayad, R, Capua, M, Garfagnini, A, Iannotti, L, Schioppa, M, Susinno, G, Kim, JY, Lee, JH, Lim, IT, Pac, MY, Caldwell, A, Cartiglia, N, Jing, Z, Liu, W, Mellado, B, Parsons, JA, Ritz, S, Sampson, S, Sciulli, F, Straub, PB, Zhu, Q, Borzemski, P, Chwastowski, J, Eskreys, A, Figiel, J, Klimek, K, Przybycien, MB, Zawiejski, L, Adamczyk, L, Bednarek, B, Bukowy, M, Jelen, K, Kisielewska, D, Kowalski, T, Przybycien, M, Rulikowska-Zarebska, E, Suszycki, L, Zajac, J, Dulinski, Z, Kotanski, A, Abbiendi, G, Bauerdick, LAT, Behrens, U, Beier, H, Bienlein, JK, Cases, G, Deppe, O, Desler, K, Drews, G, Fricke, U, Gilkinson, DJ, Glasman, C, Gottlicher, P, Haas, T, Hain, W, Hasell, D, Johnson, KF, Kasemann, M, Koch, W, Kotz, U, Kowalski, H, Labs, J, Lindemann, L, Lohr, B, Lowe, M, Manczak, O, Milewski, J, Monteiro, T, Ng, JST, Notz, D, Ohrenberg, K, Park, IH, Pellegrino, A, Pelucchi, F, Piotrzkowski, K, Roco, M, Rohde, M, Roldan, J, Ryan, JJ, Savin, AA, Schneekloth, U, Selonke, F, Surrow, B, Tassi, E, Voss, T, Westphal, D, Wolf, G, Wollmer, U, Youngman, C, Zarnecki, AF, Zeuner, W, Burow, BD, Grabosch, HJ, Meyer, A, Schlenstedt, S, Barbagli, G, Gallo, E, Pelfer, P, Maccarrone, G, Votano, L, Bamberger, A, Eisenhardt, S, Markun, P, Trefzger, T, Wolfle, S, Bromley, JT, Brook, NH, Bussey, PJ, Doyle, AT, Macdonald, N, Saxon, DH, Sinclair, LE, Strickland, E, Waugh, R, Bohnet, I, Gendner, N, Holm, U, Meyer-Larsen, A, Salehi, H, Wick, K, Gladilin, LK, Horstmann, D, Kcira, D, Klanner, R, Lohrmann, E, Poelz, G, Schott, W, Zetsche, F, Bacon, TC, Butterworth, I, Cole, JE, Howell, G, Hung, BHY, Lamberti, L, Long, KR, Miller, DB, Pavel, N, Prinias, A, Sedgbeer, JK, Sideris, D, Walker, R, Mallik, U, Wang, SM, Wu, JT, Cloth, P, Filges, D, Fleck, JI, Ishii, T, Kuze, M, Suzuki, I, Tokushuku, K, Yamada, S, Yamauchi, K, Yamazaki, Y, Hong, SJ, Lee, SB, Nam, SW, Park, SK, Barreiro, F, Fernandez, JP, Garcia, G, Graciani, R, Hernandez, JM, Hervas, L, Labarga, L, Martinez, M, del Peso, J, Puga, J, Terron, J, de Troconiz, JF, Corriveau, F, Hanna, DS, Hartmann, J, Hung, LW, Murray, WN, Ochs, A, Riveline, M, Stairs, DG, St-Laurent, M, Ullmann, R, Tsurugai, T, Bashkirov, V, Dolgoshein, BA, Stifutkin, A, Bashindzhagyan, GL, Ermolov, PF, Golubkov, YA, Khein, LA, Korotkova, NA, Korzhavina, IA, Kuzmin, VA, Lukina, OY, Proskuryakov, AS, Shcheglova, LM, Solomin, AN, Zotkin, SA, Bokel, C, Botje, M, Brummer, N, Chlebana, F, Engelen, J, Koffeman, E, Kooijman, P, van Sighem, A, Tiecke, H, Tuning, N, Verkerke, W, Vossebeld, J, Vreeswijk, M, Wiggers, L, de Wolf, E, Acosta, D, Bylsma, B, Durkin, LS, Gilmore, J, Ginsburg, CM, Kim, CL, Ling, TY, Nylander, P, Romanowski, TA, Blaikley, HE, Cashmore, RJ, Cooper-Sarkar, AM, Devenish, RCE, Edmonds, JK, Grosse-Knetter, J, Harnew, N, Nath, C, Noyes, VA, Quadt, A, Ruske, O, Tickner, JR, Uijterwaal, H, Walczak, R, Waters, DS, Bertolin, A, Brugnera, R, Carlin, R, Dal Corso, F, Dosselli, U, Limentani, S, Morandin, M, Posocco, M, Stanco, L, Stroili, R, Voci, C, Bulmahn, J, Oh, BY, Okrasinski, JR, Toothacker, WS, Whitmore, JJ, Iga, Y, D'Agostini, G, Marini, G, Nigro, A, Raso, M, Hart, JC, McCubbin, NA, Shah, TP, Epperson, D, Heusch, C, Rahn, JT, Sadrozinski, HFW, Seiden, A, Wichmann, R, Williams, DC, Schwarzer, O, Walenta, AH, Abramowicz, H, Briskin, G, Dagan, S, Kananov, S, Levy, A, Abe, T, Fusayasu, T, Inuzuka, M, Nagano, K, Umemori, K, Yamashita, T, Hamatsu, R, Hirose, T, Homma, K, Kitamura, S, Matsushita, T, Cirio, R, Costa, M, Ferrero, MI, Maselli, S, Monaco, V, Peroni, C, Petrucci, MC, Ruspa, M, Sacchi, R, Solano, A, Staiano, A, Dardo, M, Bailey, DC, Fagerstroem, CP, Galea, R, Hartner, GF, Joo, KK, Levman, GM, Martin, JF, Orr, RS, Polenz, S, Sabetfakhri, A, Simmons, D, Teuscher, RJ, Butterworth, JM, Catterall, CD, Jones, TW, Lane, SB, Saunders, RL, Sutton, MR, Wing, M, Ciborowski, J, Grzelak, G, Kasprzak, M, Muchorowski, K, Nowak, RJ, Pawlak, JM, Pawlak, R, Tymieniecka, T, Wroblewski, AK, Zakrzewski, JA, Adamus, M, Coldewey, C, Eisenberg, Y, Hochman, D, Karshon, U, Badgett, WF, Chapin, D, Cross, R, Dasu, S, Foudas, C, Loveless, RJ, Mattingly, S, Reeder, DD, Smith, WH, Vaiciulis, A, Wodarczyk, M, Deshpande, A, Dhawan, S, Hughes, VW, Bhadra, S, Frisken, WR, Khakzad, M, Schmidke, WB, Collaboration, ZEUS, and Zeus (IHEF, IoP, FNWI)
Subjects: Nuclear and High Energy Physics, Particle physics, LUND MONTE-CARLO, Hadron, FOS: Physical sciences, ZEUS, ELECTRON-POSITRON-ANNIHILATION, CENTRAL TRACKING DETECTOR, ZEUS BARREL CALORIMETER, DIFFRACTIVE SCATTERING, GLUON BREMSSTRAHLUNG, JET FRAGMENTATION, POMERON STRUCTURE, HADRON PRODUCTION, 7. Clean energy, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, Pomeron, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, Rapidity, 010306 general physics, Physics, Neutral current, 010308 nuclear & particles physics, HERA, Rest frame, Deep inelastic scattering, Gluon, High Energy Physics::Experiment
Abstract: A global event shape analysis of the multihadronic final states observed in neutral current deep inelastic scattering events with a large rapidity gap with respect to the proton direction is presented. The analysis is performed in the range $5 \leq Q^2 \leq 185\gev^2$ and $160 \leq W \leq 250\gev$, where $Q^2$ is the virtuality of the photon and $W$ is the virtual-photon proton centre of mass energy. Particular emphasis is placed on the dependence of the shape variables, measured in the $\gamma^*-$pomeron rest frame, on the mass of the hadronic final state, $M_X$. With increasing $M_X$ the multihadronic final state becomes more collimated and planar. The experimental results are compared with several models which attempt to describe diffractive events. The broadening effects exhibited by the data require in these models a significant gluon component of the pomeron., Comment: 23 pages including 4 figures

27. Search for lepton flavor violation in ep collisions at 300 GeV center of mass energy

Author: Derrick, M., Krakauer, D., Magill, S., Mikunas, D., Musgrave, B., Okrasiński, J. R., Repond, J., Stanek, R., Talaga, R. L., Zhang, H., Mattingly, M. C. K., Anselmo, F., Antonioli, P., Bari, G., Basile, M., Bellagamba, L., Boscherini, D., Bruni, A., Bruni, G., Bruni, P., Cara Romeo, G., Castellini, G., Cifarelli, L., Cindolo, F., Contin, A., Corradi, M., Gialas, I., Giusti, P., Iacobucci, G., Laurenti, G., Levi, G., Margotti, A., Massam, T., Nania, R., Palmonari, F., Pesci, A., Polini, A., Sartorelli, G., Zamora Garcia, Y., Zichichi, A., Amelung, C., Bornheim, A., Crittenden, J., Deffner, R., Eckert, M., Feld, L., Frey, A., Geerts, M., Grothe, M., Hartmann, H., Heinloth, K., Heinz, L., Hilger, E., Jakob, H. -P, Katz, U. F., Mengel, S., Paul, E., Pfeiffer, M., Rembser, Ch, Schramm, D., Stamm, J., Wedemeyer, R., Campbell-Robson, S., Cassidy, A., Cottingham, W. N., Dyce, N., Foster, B., George, S., Hayes, M. E., Heath, G. P., Heath, H. F., Piccioni, D., Roff, D. G., Tapper, R. J., Yoshida, R., Arneodo, M., Ayad, R., Capua, M., Garfagnini, A., Iannotti, L., Schioppa, M., Susinno, G., Caldwell, A., Cartiglia, N., Jing, Z., Liu, W., Parsons, J. A., Ritz, S., Sciulli, F., Straub, P. B., Wai, L., Yang, S., Zhu, Q., Borzemski, P., Chwastowski, J., Eskreys, A., Jakubowski, Z., Przybycień, M. B., Zachara, M., Zawiejski, L., Adamczyk, L., Bednarek, B., Jeleń, K., Kisielewska, D., Kowalski, T., Przybycień, M., Rulikowska-Zarȩbska, E., Suszycki, L., Zaja̧c, J., Duliński, Z., Kotański, A., Abbiendi, G., Bauerdick, L. A. T., Behrens, U., Beier, H., Bienlein, J. K., Cases, G., Deppe, O., Desler, K., Drews, G., Flasiński, M., Gilkinson, D. J., Glasman, C., Göttlicher, P., Große-Knetter, J., Haas, T., Hain, W., Hasell, D., Heßling, H., Iga, Y., Johnson, K. F., Joos, P., Kasemann, M., Klanner, R., Koch, W., Kötz, U., Kowalski, H., Labs, J., Ladage, A., Löhr, B., Löwe, M., Lüke, D., Mainusch, J., Mańczak, O., Milewski, J., Monteiro, T., Ng, J. S. T., Notz, D., Ohrenberg, K., Piotrzkowski, K., Roco, M., Rohde, M., Roldań, J., Schneekloth, U., Schulz, W., Selonke, F., Surrow, B., Tassi, E., Voß, T., Westphal, D., Wolf, G., Wollmer, U., Youngman, C., Zeuner, W., Grabosch, H. J., Mari, S. M., Meyer, A., Schlenstedt, S., Barbagli, G., Gallo, E., Pelfer, P., Maccarrone, G., Pasquale, S., Votano, L., Bamberger, A., Eisenhardt, S., Trefzger, T., Wölfle, S., Bromley, J. T., Brook, N. H., Bussey, P. J., Doyle, A. T., Saxon, D. H., Sinclair, L. E., Strickland, E., Utley, M. L., Waugh, R., Wilson, A. S., Dannemann, A., Holm, U., Horstmann, D., Sinkus, R., Wick, K., Burow, B. D., Hagge, L., Lohrmann, E., Poelz, G., Schott, W., Zetsche, F., Bacon, T. C., Brümmer, N., Butterworth, I., Harris, V. L., Howell, G., Hung, B. H. Y., Lamberti, L., Long, K. R., Miller, D. B., Pavel, N., Prinias, A., Sedgbeer, J. K., Sideris, D., Whitfield, A. F., Mallik, U., Wang, M. Z., Wang, S. M., Wu, J. T., Cloth, P., Filges, D., An, S. H., Cho, G. H., Ko, B. J., Lee, S. B., Nam, S. W., Park, H. S., Park, S. K., Kartik, S., Kim, H. -J, Mcneil, R. R., Metcalf, W., Nadendla, V. K., Barreiro, F., Fernandez, J. P., Graciani, R., Hernández, J. M., Hervás, L., Labarga, L., Martinez, M., Del Peso, J., Puga, J., Terron, J., Trocóniz, J. F., Corriveau, F., Hanna, D. S., Hartmann, J., Hung, L. W., Lim, J. N., Matthews, C. G., Murray, W. N., Ochs, A., Patel, P. M., Riveline, M., Stairs, D. G., St-Laurent, M., Ullmann, R., Zacek, G., Tsurugai, T., Bashkirov, V., Dolgoshein, B. A., Stifutkin, A., Bashindzhagyan, G. L., Ermolov, P. F., Gladilin, L. K., Golubkov, Yu A., Kobrin, V. D., Korzhavina, I. A., Kuzmin, V. A., Lukina, O. Yu, Proskuryakov, A. S., Savin, A. A., Lydia Shcheglova, Solomin, A. N., Zotov, N. P., Botje, M., Chlebana, F., Engelen, J., Kamps, M., Kooijman, P., Kruse, A., Sighem, A., Tiecke, H., Verkerke, W., Vossebeld, J., Vreeswijk, M., Wiggers, L., Wolf, E., Woudenberg, R., Acosta, D., Bylsma, B., Durkin, L. S., Gilmore, J., Ginsburg, C. M., Kim, C. L., Li, C., Ling, T. Y., Nylander, P., Park, I. H., Romanowski, T. A., Bailey, D. S., Cashmore, R. J., Cooper-Sarkar, A. M., Devenish, R. C. E., Harnew, N., Lancaster, M., Lindemann, L., Mcfall, J. D., Nath, C., Noyes, V. A., Quadt, A., Tickner, J. R., Uijterwaal, H., Walczak, R., Waters, D. S., Wilson, F. F., Yip, T., Bertolin, A., Brugnera, R., Carlin, R., Dal Corso, F., Giorgi, M., Dosselli, U., Limentani, S., Morandin, M., Posocco, M., Stanco, L., Stroili, R., Voci, C., Zuin, F., Bulmahn, J., Feild, R. G., Oh, B. Y., Whitmore, J. J., D Agostini, G., Marini, G., Nigro, A., Hart, J. C., Mccubbin, N. A., Shah, T. P., Barberis, E., Dubbs, T., Heusch, C., Hook, M., Lockman, W., Rahn, J. T., Sadrozinski, H. F. -W, Seiden, A., Williams, D. C., Biltzinger, J., Seifert, R. J., Schwarzer, O., Walenta, A. H., Abramowicz, H., Briskin, G., Dagan, S., Doeker, T., Levy, A., Fleck, J. I., Inuzuka, M., Ishii, T., Kuze, M., Mine, S., Nakao, M., Suzuki, I., Tokushuku, K., Umemori, K., Yamada, S., Yamazaki, Y., Chiba, M., Hamatsu, R., Hirose, T., Homma, K., Kitamura, S., Matsushita, T., Yamauchi, K., Cirio, R., Costa, M., Ferrero, M. I., Maselli, S., Peroni, C., Sacchi, R., Solano, A., Staiano, A., Dardo, M., Bailey, D. C., Benard, F., Brkic, M., Fagerstroem, C. -P, Hartner, G. F., Joo, K. K., Levman, G. M., Martin, J. F., Orr, R. S., Polenz, S., Sampson, C. R., Simmons, D., Teuscher, R. J., Butterworth, J. M., Catterall, C. D., Jones, T. W., Kaziewicz, P. B., Lane, J. B., Saunders, R. L., Shulman, J., Sutton, M. R., Lu, B., Mo, L. W., Bogusz, W., Ciborowski, J., Gajewski, J., Grzelak, G., Kasprzak, M., Krzyzanowski, M., Muchorowski, K., Nowak, R. J., Pawlak, J. M., Tymieniecka, T., Wróblewski, A. K., Zakrzewski, J. A., Zarnecki, A. F., Adamus, M., Coldewey, C., Eisenberg, Y., Hochman, D., Karshon, U., Revel, D., Zer-Zion, D., Badgett, W. F., Breitweg, J., Chapin, D., Cross, R., Dasu, S., Foudas, C., Loveless, R. J., Mattingly, S., Reeder, D. D., Silverstein, S., Smith, W. H., Vaiciulis, A., Wodarczyk, M., Bhadra, S., Cardy, M. L., Frisken, W. R., Khakzad, M., Schmidke, W. B., and Zeus (IHEF, IoP, FNWI)
Subjects: Particle physics, Physics and Astronomy (miscellaneous), High Energy Physics::Lattice, P(P)OVER-BAR COLLISIONS, FOS: Physical sciences, 01 natural sciences, Zeus (malware), High Energy Physics - Experiment, Physics, Particles & Fields, law.invention, ZEUS, CENTRAL TRACKING DETECTOR, ZEUS BARREL CALORIMETER, PARTON DISTRIBUTIONS, SCALAR LEPTOQUARKS, MONTE-CARLO, Z0 DECAYS, CONVERSION, High Energy Physics - Experiment (hep-ex), DESIGN, law, 0103 physical sciences, Leptoquark, 010306 general physics, Collider, Nuclear Experiment, Flavor, Physics, Coupling, Science & Technology, CONSTRUCTION, hep-ex, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, HERA, Nuclear & Particles Physics, 3. Good health, Physical Sciences, High Energy Physics::Experiment, Center of mass, Lepton
Abstract: Using the ZEUS detector at the HERA electron-proton collider, we have searched for lepton flavor violation in ep collisions at a center-of-mass energy s^1/2 of 300 GeV. Events of the type e + p -> lepton + X with a final-state lepton (mu or tau) of high transverse momentum, were sought. No evidence was found for lepton flavor violation in the combined 1993 and 1994 data samples, for which the integrated luminosities were 0.84 pb^-1 for e- p collisions and 2.94 pb^-1 for e+ p collisions. Limits on coupling vs. mass are provided for leptoquarks and R-parity violating squarks. For flavor violating couplings of electromagnetic strength, we set 95% confidence level lower limits on leptoquark masses between 207 GeV and 272 GeV, depending on the leptoquark species and final-state lepton. For leptoquark masses larger than 300 GeV, limits on flavor-changing couplings are determined, many of which supersede prior limits from rare decay processes., 37 pages, 9 figures, LaTex

Catalog

Books, media, physical & digital resources

See catalog results

Searchworks

Select search scope, currently: Articles

Catalog

books, media & more in Jio Institute collections

Articles

journal articles & other e-resources

Refine your results

27 results on '"Stamm J"'

1. INCLUSIVE TRANSVERSE-MOMENTUM DISTRIBUTIONS OF CHARGED-PARTICLES IN DIFFRACTIVE AND NON-DIFFRACTIVE PHOTOPRODUCTION AT HERA

2. Observation of jet production in deep inelastic scattering with a large rapidity gap at HERA

3. Jet production in highQ 2 deep-inelastic ep scattering at HERA

4. Forward jet production in deep inelastic scattering at HERA

5. Measurement of the diffractive structure function F2D(4) at HERA

6. Search for selectron and squark production in e(+)p collisions at HERA

7. Measurement of inelastic J/psi photoproduction at HERA

8. Study of photon dissociation in diffractive photoproduction at HERA

9. The ZEUS leading protoWospectrometer and its use in the measurement of elastic $\rho^{0}$ photoproduction at HERA

10. A search for excited fermions in $e+p$ collisions at HERA

11. Measurement of elastic J/psi photoproduction at HERA

12. Measurement of Elastic omega Photoproduction at HERA

13. Observation of events with an energetic forward neutron in deep inelastic scattering at HERA

14. Measurement of the proton structure function F_2 at low x and low Q(2) at HERA

15. MEASUREMENT OF ELASTIC P(0) PHOTOPRODUCTION AT HERA

16. Diffractive Hard Photoproduction at HERA and Evidence for the Gluon Content of the Pomeron

17. Measurement of elastic ω photoproduction at HERA ZEUS Collaboration

18. MEASUREMENT OF THE PROTON STRUCTURE-FUNCTION F2 FROM THE 1993 HERA DATA

19. NEUTRAL STRANGE PARTICLE-PRODUCTION IN DEEP-INELASTIC SCATTERING AT HERA

20. Measurement of the diffractive structure function in deep inelastic scattering at HERA

21. Axisymmetric time-dependent flow in the Taylor-Couette system

22. Dijet cross sections in photoproduction at HERA

23. Comparison of energy flows in deep inelastic scattering events with and without a large rapidity gap

24. Study of the photon remnant in resolved photoproduction at HERA

25. Inclusive charged particle distributions in deep inelastic scattering events at HERA

26. Event shape analysis of deep inelastic scattering events with a large rapidity gap at HERA

27. Search for lepton flavor violation in ep collisions at 300 GeV center of mass energy

Catalog

Searchworks

Select search scope, currently: Articles Catalog books, media & more in Jio Institute collections Articles journal articles & other e-resources

Search

Search Constraints

Refine your results

Search Limiters

Topic

Publication Year Range

Language

Journal

Database

Publisher

27 results on '"Stamm J"'

Search Results

Catalog

Select search scope, currently: Articles

Catalog

books, media & more in Jio Institute collections

Articles

journal articles & other e-resources