Search

Your search keyword '"M. Del Degan"' showing total 25 results
Start Over Author "M. Del Degan"
25 results on '"M. Del Degan"'

1. Measurement of the inclusive ep scattering cross section at low Q2 and x at HERA

Author

The H1 Collaboration, F. D. Aaron, C. Alexa, V. Andreev, B. Antunovic, S. Aplin, A. Asmone, A. Astvatsatourov, S. Backovic, A. Baghdasaryan, E. Barrelet, W. Bartel, K. Begzsuren, O. Behnke, O. Behrendt, A. Belousov, J. C. Bizot, V. Boudry, I. Bozovic-Jelisavcic, J. Bracinik, G. Brandt, M. Brinkmann, V. Brisson, D. Bruncko, A. Bunyatyan, G. Buschhorn, L. Bystritskaya, A. J. Campbell, K. B. Cantun Avila, F. Cassol-Brunner, K. Cerny, V. Cerny, V. Chekelian, A. Cholewa, J. G. Contreras, J. A. Coughlan, G. Cozzika, J. Cvach, J. B. Dainton, K. Daum, M. Deák, Y. de Boer, B. Delcourt, M. Del Degan, J. Delvax, A. De Roeck, E. A. De Wolf, C. Diaconu, V. Dodonov, A. Dossanov, A. Dubak, G. Eckerlin, D. Eckstein, V. Efremenko, S. Egli, A. Eliseev, E. Elsen, A. Falkiewicz, P. J. W. Faulkner, L. Favart, A. Fedotov, R. Felst, J. Feltesse, J. Ferencei, D.-J. Fischer, M. Fleischer, A. Fomenko, E. Gabathuler, J. Gayler, S. Ghazaryan, A. Glazov, I. Glushkov, L. Goerlich, N. Gogitidze, M. Gouzevitch, C. Grab, T. Greenshaw, B. R. Grell, G. Grindhammer, S. Habib, D. Haidt, M. Hansson, C. Helebrant, R. C. W. Henderson, E. Hennekemper, H. Henschel, M. Herbst, G. Herrera, M. Hildebrandt, K. H. Hiller, D. Hoffmann, R. Horisberger, T. Hreus, M. Jacquet, M. E. Janssen, X. Janssen, V. Jemanov, L. Jönsson, A. W. Jung, H. Jung, M. Kapichine, J. Katzy, I. R. Kenyon, C. Kiesling, M. Klein, C. Kleinwort, T. Kluge, A. Knutsson, R. Kogler, V. Korbel, P. Kostka, M. Kraemer, K. Krastev, J. Kretzschmar, A. Kropivnitskaya, K. Krüger, K. Kutak, M. P. J. Landon, W. Lange, G. Laštovička-Medin, P. Laycock, T. Laštovička, A. Lebedev, G. Leibenguth, V. Lendermann, S. Levonian, G. Li, K. Lipka, A. Liptaj, B. List, J. List, E. Lobodzinska, N. Loktionova, R. Lopez-Fernandez, V. Lubimov, L. Lytkin, A. Makankine, E. Malinovski, P. Marage, Ll. Marti, H.-U. Martyn, S. J. Maxfield, A. Mehta, K. Meier, A. B. Meyer, H. Meyer, J. Meyer, V. Michels, S. Mikocki, I. Milcewicz-Mika, F. Moreau, A. Morozov, J. V. Morris, M. U. Mozer, M. Mudrinic, K. Müller, P. Murín, B. Naroska, Th. Naumann, P. R. Newman, C. Niebuhr, A. Nikiforov, G. Nowak, K. Nowak, M. Nozicka, B. Olivier, J. E. Olsson, S. Osman, D. Ozerov, V. Palichik, I. Panagoulias, M. Pandurovic, Th. Papadopoulou, C. Pascaud, G. D. Patel, O. Pejchal, E. Perez, A. Petrukhin, I. Picuric, S. Piec, D. Pitzl, R. Plačakytė, R. Polifka, B. Povh, T. Preda, V. Radescu, A. J. Rahmat, N. Raicevic, A. Raspiareza, T. Ravdandorj, P. Reimer, E. Rizvi, P. Robmann, B. Roland, R. Roosen, A. Rostovtsev, M. Rotaru, J. E. Ruiz Tabasco, Z. Rurikova, S. Rusakov, D. Šálek, D. P. C. Sankey, M. Sauter, E. Sauvan, S. Schmitt, C. Schmitz, L. Schoeffel, A. Schöning, H.-C. Schultz-Coulon, F. Sefkow, R. N. Shaw-West, I. Sheviakov, L. N. Shtarkov, S. Shushkevich, T. Sloan, I. Smiljanic, Y. Soloviev, P. Sopicki, D. South, V. Spaskov, A. Specka, Z. Staykova, M. Steder, B. Stella, G. Stoicea, U. Straumann, D. Sunar, T. Sykora, V. Tchoulakov, G. Thompson, P. D. Thompson, T. Toll, F. Tomasz, T. H. Tran, D. Traynor, T. N. Trinh, P. Truöl, I. Tsakov, B. Tseepeldorj, J. Turnau, K. Urban, A. Valkárová, C. Vallée, P. Van Mechelen, A. Vargas Trevino, Y. Vazdik, S. Vinokurova, V. Volchinski, M. von den Driesch, D. Wegener, Ch. Wissing, E. Wünsch, J. Žáček, J. Zálešák, Z. Zhang, A. Zhokin, T. Zimmermann, H. Zohrabyan, and F. Zomer

Subjects
Monte Carlo, Systematic Uncertainty, Central Tracker, Electron Tagger, Reduced Cross Section, Astrophysics, QB460-466, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract

Abstract A measurement of the inclusive ep scattering cross section is presented in the region of low momentum transfers, 0.2 GeV2 ≤Q 2≤12 GeV2, and low Bjorken x, 5⋅10−6≤x≤0.02. The result is based on two data sets collected in dedicated runs by the H1 Collaboration at HERA at beam energies of 27.6 GeV and 920 GeV for positrons and protons, respectively. A combination with data previously published by H1 leads to a cross section measurement of a few percent accuracy. A kinematic reconstruction method exploiting radiative ep events extends the measurement to lower Q 2 and larger x. The data are compared with theoretical models which apply to the transition region from photoproduction to deep inelastic scattering.

Published
2009
Full Text
View/download PDF

2. Deeply virtual Compton scattering and its beam charge asymmetry in e±p collisions at HERA

Author

K. H. Hiller, R. C. W. Henderson, Pavel Murin, Judith Katzy, Calin Alexa, V. Tchoulakov, R.N. Shaw-West, T. Toll, A. D.R. Vargas Trevino, Laurent Favart, S. Habib, S. Ghazaryan, B. Olivier, R. Kogler, E. E. Elsen, Ivan Smiljanic, Emmanuelle Perez, Stephen Maxfield, S. M. Piec, I. R. Kenyon, H. U. Martyn, J-P. Meyer, K. Lipka, T. N. Trinh, R. Zus, J. G. Contreras, Paul Laycock, E. Malinovski, Emmanuel Sauvan, C. Wissing, Ilias Panagoulias, G. Grindhammer, K. Krüger, B. R. Grell, B. Pokorny, J. Žáček, D. Wegener, A. Raspiareza, M. Sauter, Andrew Mehta, N. Gogitidze, A. Specka, M. Kapichine, M. Nozicka, B. Delcourt, Max Klein, B. Stella, Stefan Schmitt, U. Straumann, V. Lubimov, P. E. Reimer, Th. Naumann, F. Tomasz, A. W. Jung, A. Dubak, Fabian Zomer, K. Urban, David M. South, V. Efremenko, P. Sopicki, Tomas Hreus, G. Leibenguth, A. M. Fomenko, Maxime Gouzevitch, A. Knutsson, J. Zálešák, V. Lendermann, V. Spaskov, G. Herrera, S. Shushkevich, Murrough Landon, Sakar Osman, Vladimir Palichik, Paul Richard Newman, Grzegorz Nowak, Mila Pandurovic, A. Falkiewicz, G. Cozzika, N. Loktionova, S. Mikocki, A. Eliseev, A. Nikiforov, L. N. Shtarkov, K. Alimujiang, Hannes Jung, Alexander Zhokin, O. Pejchal, E. Gabathuler, A. Dossanov, R. Pla akyt, T. J. Sloan, V. Andreev, A.S. Belousov, A. Petrukhin, A. Baghdasaryan, A. Rostovtsev, Ll. Marti, I. Bozovic-Jelisavcic, J. Cvach, Th D. Papadopoulou, Sergey Rusakov, P. Truöl, Pierre Marage, C. Vallée, M. Herbst, M. Deak, V. Cerny, G. Thompson, K. Nowak, P. Van Mechelen, K. Krastev, T.H. Tran, Benno List, John A Coughlan, J. Bracinik, H-C. Schultz-Coulon, G. La tovi ka-Medin, E. Wünsch, T. Kluge, Z. Staykova, M. E. Janssen, A. B. Meyer, Christian Helebrant, A. Makankine, G. Buschhorn, Gabriel Stoicea, D. Ozerov, Wolfgang Lange, Gerhard Brandt, K. Daum, J. Gayler, Karel Cerny, V. Michels, V. Volchinski, D.K. Nikitin, Dirk L. Hoffmann, J. B. Dainton, Leif J. Jönsson, Roland Horisberger, D. J. Fischer, A. Valkárová, Krzysztof Kutak, Y. Vazdik, P.D. Thompson, H. Henschel, J.C. Bizot, A. Glazov, M. Brinkmann, C. Niebuhr, Benoit Roland, S. Egli, J. Delvax, M. Aldaya Martin, V. Brisson, K. Müller, Xavier Janssen, I. Picuric, Zhen Zhang, I. Glushkov, Guenter Eckerlin, André Schöning, Peter Robmann, Ricardo Lopez-Fernandez, Matthias Ulrich Mozer, Y. Soloviev, Dusan Bruncko, A. Fedotov, K. B. Cantun Avila, C. Kiesling, T. Zimmermann, E. Barrelet, F. Moreau, Gang Li, M. Steder, T. Greenshaw, A. J. Campbell, E. Hennekemper, M. von den Driesch, G. D. Patel, M. Jacquet, S. Backovic, J. E. Ruiz Tabasco, E. A. De Wolf, Voica Radescu, Zuzana Rurikova, Christoph Grab, R. Roosen, H. Meyer, Biljana Antunović, S. Levonian, D. álek, Y. de Boer, S. Vinokurova, J. Ferencei, I. Milcewicz-Mika, L. Bystritskaya, J. E. Olsson, W. Bartel, Malte Hildebrandt, P. Kostka, T. Sykora, T. Ravdandorj, Claus Kleinwort, M. Kraemer, J. Turnau, H. Zohrabyan, K. Begzsuren, Richard Polifka, Natasa Raicevic, M. Mudrinic, I. Tsakov, V. Chekelian, F. D. Aaron, J. Feltesse, J. V. Morris, Jenny List, Vincent Boudry, A. N. Morozov, M. Fleischer, A.J. Rahmat, A. Bunyatyan, Marina Rotaru, D. Sunar, C. Pascaud, A. Cholewa, Bogdan Povh, F. Sefkow, A. Lebedev, Cristinel Diaconu, Daniel Pitzl, D. Traynor, D. Haidt, Jan Kretzschmar, Andrej Liptaj, Eram Rizvi, V. Dodonov, Laurent Schoeffel, B. Tseepeldorj, D. P. C. Sankey, Anna Kropivnitskaya, R. Felst, M. Del Degan, and L. Goerlich

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Photon, 010308 nuclear & particles physics, media_common.quotation_subject, Momentum transfer, Compton scattering, Parton, HERA, 01 natural sciences, Asymmetry, Nuclear physics, Dipole, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics, P system, media_common
Abstract

A measurement of elastic deeply virtual Compton scattering gamma*p --> gamma p using e(+) p and e(-) p collision data recorded with the HI detector at HERA is presented. The analysed data sample corresponds to an integrated luminosity of 306 pb(-1), almost equally shared between both beam charges. The cross section is measured as a function of the virtuality Q(2) of the exchanged photon and the centre-of-mass energy W of the gamma*p system in the kinematic domain 6.5 < Q(2) < 80 GeV2, 30 < W < 140 GeV and |t| < 1 GeV2, where t denotes the squared momentum transfer at the proton vertex. The cross section is determined differentially in t for different Q(2) and W values and exponential t-slope parameters are derived. Using e(+) p and e(-) p data samples, a beam charge asymmetry is extracted for the first time in the low Biorken x kinematic domain. The observed asymmetry is attributed to the interference between Bethe-Heitler and deeply virtual Compton scattering processes. Experimental results are discussed in the context of two different models, one based on generalised parton distributions and one based on the dipole approach. (C) 2009 Elsevier B.V. All rights reserved.

Published
2009

3. Inclusive photoproduction of ρ0, K∗0 and ϕ mesons at HERA

Author

J. V. Morris, Jenny List, A.J. Rahmat, A. Bunyatyan, Marina Rotaru, Katerina Lipka, V. Tchoulakov, G. Laštovička-Medin, R.N. Shaw-West, F. Moreau, S. J. Aplin, C. Niebuhr, G. Leibenguth, A. D.R. Vargas Trevino, A. Astvatsatourov, Mila Pandurovic, S. Egli, Y. Soloviev, K. H. Hiller, K. Daum, R. C. W. Henderson, A. Specka, Matthias Ulrich Mozer, A. Fedotov, M. Kraemer, M. Gouzevitch, R. Kogler, J. Žáček, U. Straumann, Magnus Hansson, Voica Radescu, Christoph Grab, Richard Polifka, A. Knutsson, M. Deak, K. B. Cantun Avila, E. Wünsch, T. Toll, S. Shushkevich, Sakar Osman, V. Chekelian, M. Del Degan, B. R. Grell, V. Lendermann, F. D. Aaron, Judith Katzy, C. Wissing, A. Eliseev, C. Kiesling, Pavel Murin, Tim Greenshaw, J-P. Meyer, V. Jemanov, D. Wegener, J. Delvax, A. J. Campbell, G. Thompson, Paul Laycock, E. Malinovski, Emmanuel Sauvan, M. von den Driesch, Wolfgang Lange, G. D. Patel, Biljana Antunović, F. Tomasz, A. Raspiareza, Stephen Maxfield, David M. South, P. E. Reimer, Z. Staykova, J. Bracinik, I. R. Kenyon, Karel Cerny, Th. D. Papadopoulou, B. Stella, J. Gayler, T. Sykora, M. Sauter, A. Baghdasaryan, A. Rostovtsev, A. Schöning, Tomas Hreus, Stefan Schmitt, G. Grindhammer, T. H. Tran, I. Sheviakov, V. Efremenko, L. Goerlich, M. E. Janssen, Roland Horisberger, T. Kluge, A. Lebedev, J. Ferencei, A. Valkárová, Laurent Schoeffel, Andrew Mehta, N. Gogitidze, H. Henschel, Laurent Favart, D. Haidt, A. De Roeck, A. Nikiforov, K. Krastev, A. Glazov, J.C. Bizot, S. Mikocki, Fabian Zomer, Vladimir Andreev, Peter Robmann, K. Urban, Eram Rizvi, Calin Alexa, Gabriel Stoicea, H. U. Martyn, Matthias Klein, Murrough Landon, V. Korbel, J. Zálešák, A. Makankine, A. Dubak, V. Dodonov, V. Spaskov, S. Ghazaryan, G. Buschhorn, D. Ozerov, Vladimir Palichik, Ll. Marti, G. Cozzika, I. Picuric, C. Pascaud, T. Zimmermann, A. B. Meyer, V. Cerny, D. J. Fischer, B. Olivier, A. W. Jung, Zhen Zhang, Ricardo Lopez-Fernandez, S. Backovic, I. Bozovic-Jelisavcic, M. Herbst, Y. Vazdik, Zuzana Rurikova, E. E. Elsen, S. Vinokurova, M. Jacquet, Guenter Eckerlin, Nicolas Berger, I. Panagoulias, G. Herrera, P.D. Thompson, V. Michels, P. Van Mechelen, J. B. Dainton, B. Tseepeldorj, M. Steder, D. Hoffmann, P. Kostka, Ivan Smiljanic, C. Schmitz, Dusan Bruncko, Hannes Jung, B. Naroska, D. P. C. Sankey, J. Turnau, Alexander Zhokin, S. Levonian, John A Coughlan, J. E. Olsson, C. Vallée, D. Salek, E. Hennekemper, K. Begzsuren, M. Mudrinic, I. Tsakov, L. Bystritskaya, W. Bartel, Th. Naumann, Christian Helebrant, T. Ravdandorj, Claus Kleinwort, Leif J. Jönsson, Benoit Roland, Malte Hildebrandt, Anna Kropivnitskaya, Gang Li, Gerhard Brandt, V. Volchinski, M. Kapichine, M. Nozicka, R. Felst, Emmanuelle Perez, J. G. Contreras, H. Meyer, H. Zohrabyan, B. Delcourt, Xavier Janssen, I. Milcewicz-Mika, S. M. Piec, E. Gabathuler, T. N. Trinh, M. Fleischer, Natasa Raicevic, J. Feltesse, J. Cvach, Vincent Boudry, O. Pejchal, A. N. Morozov, Bogdan Povh, F. Sefkow, Benno List, R. Plačakytė, P. Sopicki, A. M. Fomenko, K. Nowak, H-C. Schultz-Coulon, M. Brinkmann, Krzysztof Kutak, T. J. Sloan, P.J.W. Faulkner, A.S. Belousov, Sergey Rusakov, P. Truöl, K. Müller, N. Loktionova, T. Preda, E. Barrelet, J. E. Ruiz Tabasco, E. A. De Wolf, Karlheinz Meier, R. Roosen, Y. de Boer, Paul Richard Newman, Grzegorz Nowak, A. Dossanov, A. Petrukhin, S. Habib, V. Brisson, A. Falkiewicz, K. Krüger, V. Lubimov, L. N. Shtarkov, Daniel Pitzl, D. Traynor, A. Asmone, F. Cassol-Brunner, Jan Kretzschmar, Andrej Liptaj, Pierre Marage, I. Glushkov, O. Behnke, D. Sunar, A. Cholewa, L. Lytkin, and Cristinel Diaconu

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Meson, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, HERA, 01 natural sciences, 0103 physical sciences, Transverse momentum, High Energy Physics::Experiment, Rapidity, Nuclear Experiment, 010306 general physics
Abstract

Inclusive non-diffractive photoproduction of rho(770)(0), K*(892)(0) and phi(1020) mesons is investigated with the H1 detector in ep collisions at HERA. The corresponding average gamma p centre-of-mass energy is 210 GeV. The mesons are measured in the transverse momentum range 0.5 < p(T) < 7 GeV and the rapidity range vertical bar y(lab)vertical bar < 1. Differential cross sections are presented as a function of transverse momentum and rapidity, and are compared to the predictions of hadroproduction models. (C) 2009 Elsevier B.V. All rights reserved.

Published
2009

4. Measurement of diffractive scattering of photons with large momentum transfer at HERA

Author

J. Feltesse, David M. South, H. Peng, Leif J. Jönsson, Benoit Roland, A. Baghdasaryan, A. Rostovtsev, K. H. Hiller, R. C. W. Henderson, Matthias Ulrich Mozer, T. Klimkovich, A. Fedotov, S. Vinokurova, K. B. Cantun Avila, M. E. Janssen, P. Kostka, Paul Laycock, J. Turnau, E. Malinovski, Emmanuel Sauvan, Stephen Maxfield, V. Lubimov, P. A. Smirnov, C. Kiesling, E. Tzamariudaki, A. J. Campbell, K. Nankov, L. N. Shtarkov, E. E. Elsen, G. Grindhammer, E. Wünsch, A. Specka, K. Begzsuren, T. H. Tran, Dave Sankey, S. Habib, A. Falkiewicz, I. R. Kenyon, J. E. Olsson, Laurent Schoeffel, M. Mudrinic, J. Delvax, K. Krüger, Peter Robmann, Alessandro Bacchetta, I. Tsakov, W. Bartel, Pierre Marage, Emmanuelle Perez, L. Bystritskaya, Matthew Beckingham, Andrew Mehta, C. Niebuhr, N. Gogitidze, P. E. Reimer, Th. Naumann, Malte Hildebrandt, K. Urban, Murrough Landon, G. D. Patel, Biljana Antunović, B. Stella, Anna Kropivnitskaya, Roland Horisberger, J. Žáček, G. Leibenguth, H. U. Martyn, Matthias Klein, I. Glushkov, A. Valkárová, S. Egli, R. Felst, Stefan Schmitt, H. Zohrabyan, Katerina Lipka, T. Sykora, V. Tchoulakov, R.N. Shaw-West, Zhiqing Zhang, T. Zimmermann, Natasa Raicevic, Y. Soloviev, E. Gabathuler, V. Michels, J. B. Dainton, D. Wegener, M. Fleischer, S. M. Piec, M. Gouzevitch, Hans-Christian Schultz-Coulon, Vincent Boudry, A. N. Morozov, V. Yeganov, P. Van Mechelen, G. Laštovička-Medin, Gerhard Brandt, Voica Radescu, A. Lebedev, F. Salvaire, D. Haidt, B. R. Grell, A. De Roeck, Eram Rizvi, M. Kapichine, M. Nozicka, A. Nikiforov, O. Behnke, I. Sheviakov, S. Backovic, Daniel Pitzl, U. Straumann, Ll. Marti, Vladimir Palichik, Bogdan Povh, F. Sefkow, Gang Li, B. Delcourt, V. Lendermann, F. Moreau, S. J. Aplin, I. Bozovic-Jelisavcic, Christoph Grab, D. Traynor, A. Asmone, F. Tomasz, C. Wissing, L. Finke, R. Plačakytė, V. Dodonov, S. Shushkevich, Sakar Osman, A.-I. Lucaci-Timoce, V. Volchinski, Zuzana Rurikova, J. Zálešák, F. Cassol-Brunner, H. Meyer, Judith Katzy, Y.C. Zhu, K. Daum, A. Eliseev, V. Efremenko, Wolfgang Lange, V. Spaskov, P. Sopicki, A. M. Fomenko, B. Tseepeldorj, T. Kluge, Benno List, N. Loktionova, M. Brinkmann, A. Hovhannisyan, T. Preda, I. Tsurin, I. Milcewicz-Mika, O. Pejchal, I. Picuric, P. Baranov, M. Goettlich, J. Gayler, K. Krastev, Ricardo Lopez-Fernandez, I. Panagoulias, M. Steder, D. Hoffmann, S. Essenov, Fabian Zomer, G. Cozzika, C. Schmitz, A. Astvatsatourov, Mila Pandurovic, Jan Kretzschmar, Andrej Liptaj, A. D.R. Vargas Trevino, D. Sunar, R. Kogler, Karel Cerny, J. Bracinik, A. Schöning, A. Knutsson, A. Makankine, G. Buschhorn, D. Ozerov, J. V. Morris, Jenny List, Calin Alexa, A.J. Rahmat, A. Bunyatyan, Marina Rotaru, S. Ghazaryan, Tomas Hreus, V. Jemanov, A. Raspiareza, M. Sauter, A. B. Meyer, A. Dubak, Dusan Bruncko, B. Naroska, Y. Vazdik, P.D. Thompson, T. Greenshaw, Xavier Janssen, T. N. Trinh, J-P. Meyer, T. Toll, S. Mikocki, C. Pascaud, Guenter Eckerlin, T. J. Sloan, P.J.W. Faulkner, V. Cerny, Hannes Jung, Alexander Zhokin, C. Vallée, M. Deak, M.-O. Boenig, D. Johnson, A. Glazov, V. Korbel, J. Ferencei, B. Olivier, Nicolas Berger, A.S. Belousov, Sergey Rusakov, P. Truöl, S. Levonian, G. Thompson, A. Zhelezov, Z. Staykova, V. Andreev, John A Coughlan, A. Cholewa, H. Henschel, Magnus Hansson, M. Jacquet, J.C. Bizot, T. Ravdandorj, Claus Kleinwort, M. Kraemer, M. Del Degan, L. Lytkin, Christian Helebrant, Richard Polifka, Cristinel Diaconu, L. Goerlich, S. Schmidt, V. Chekelian, F. D. Aaron, E. Barrelet, A. W. Jung, G. Herrera, J. E. Ruiz Tabasco, E. A. De Wolf, Krzysztof Kutak, Karlheinz Meier, R. Roosen, Y. de Boer, K. Müller, Paul Richard Newman, Grzegorz Nowak, A. Dossanov, A. Petrukhin, J. Cvach, K. Nowak, Michael R. Wessels, V. Brisson, Ivan Smiljanic, D. Salek, J. G. Contreras, Pavel Murin, Th. D. Papadopoulou, Laurent Favart, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, H1, (ukupan broj autora: 274), H1 Collaboration, Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), and Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)

Subjects
Diffraction, Particle physics, Nuclear and High Energy Physics, Photon, FOS: Physical sciences, Physics::Optics, 01 natural sciences, 7. Clean energy, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], ddc:530, Vector meson, Nuclear Experiment, 010306 general physics, Physics, 010308 nuclear & particles physics, Scattering, Momentum transfer, Perturbative QCD, HERA, Vertex (geometry), Physique des particules élémentaires, High Energy Physics::Experiment
Abstract

The first measurement of diffractive scattering of quasi-real photons with large momentum transfer γ p → γ Y, where Y is the proton dissociative system, is made using the H1 detector at HERA. The measurement is performed for initial photon virtualities Q 2 < 0.01 GeV 2. Single differential cross sections are measured as a function of W, the incident photon-proton centre of mass energy, and t, the square of the four-momentum transferred at the proton vertex, in the range 175 < W < 247 GeV and 4 <, 0, SCOPUS: ar.j, info:eu-repo/semantics/published

Published
2009
Full Text
View/download PDF

5. Measurement of the proton structure function FL(x,Q2) at low x

Author

L. Finke, Roland Horisberger, H. Peng, Y.C. Zhu, K. Daum, A. Valkárová, K. H. Hiller, R. C. W. Henderson, Matthias Ulrich Mozer, B. R. Grell, A. Fedotov, K. B. Cantun Avila, Calin Alexa, F. Tomasz, S. Vinokurova, T. Kluge, David M. South, S. Shushkevich, Sakar Osman, A. Eliseev, E. E. Elsen, J. Bracinik, P. Kostka, A. Specka, I. Sheviakov, J. Ferencei, Laurent Schoeffel, Judith Katzy, P. E. Reimer, E. Wuensch, C. Kiesling, E. Tzamariudaki, A. J. Campbell, J. Turnau, K. Begzsuren, M. Mudrinic, Alessandro Bacchetta, I. Tsakov, I. Picuric, C. Pascaud, A. Makankine, Pavel Murin, J. Zálešák, K. Urban, Murrough Landon, K. Krastev, V. Spaskov, G. Li, S. Ghazaryan, G. Buschhorn, D. Ozerov, Th. D. Papadopoulou, Paul Laycock, Emmanuelle Perez, Tim Greenshaw, V. Jemanov, Guenter Eckerlin, E. Malinovski, V. Yeganov, A. B. Meyer, Emmanuel Sauvan, M. Beckingharn, V. Michels, C. Wissing, A. Baghdasaryan, A. Rostovtsev, M. Kraemer, Leif J. Jönsson, Dave Sankey, Benoit Roland, J. Delvax, J. B. Dainton, G. Grindhammer, F. Moreau, S. J. Aplin, Ricardo Lopez-Fernandez, T. Klimkovich, Richard Polifka, S. M. Piec, A. Raspiareza, S. Schmidt, V. Chekelian, F. D. Aaron, Laurent Favart, A. Nikiforov, Karel Cerny, I. Panagoulias, M. Steder, M. Kapichine, M. Nozicka, D. Hoffmann, S. Habib, Th. Naumann, Ll. Marti, P. Van Mechelen, I. Bozovic-Jelisavcic, S. Essenov, M. Sauter, G. D. Patel, Wolfgang Lange, M. Goettlich, Biljana Antunović, Dusan Bruncko, O. Pejchal, J. Gayler, A. Falkiewicz, Krzysztof Kutak, B. Naroska, M. E. Janssen, E. Gabathuler, T. H. Tran, D.P. Johnson, J. E. Olsson, W. Bartel, T. Sykora, Malte Hildebrandt, B. Delcourt, G. Laštovička-Medin, A. Glazov, I. R. Kenyon, G. Leibenguth, T. Ravdandorj, Claus Kleinwort, E. Barrelet, A. D.R. Vargas Trevino, V. Lubimov, P. Baranov, M. Jacquet, Natasa Raicevic, Vincent Boudry, C. Niebuhr, Benno List, A. N. Morozov, R. Placakyte, J. E. Ruiz Tabasco, E. A. De Wolf, A. Knutsson, Karlheinz Meier, R. Roosen, M. Gouzevitch, J. V. Morris, Jenny List, R. Kogler, T. J. Sloan, P.J.W. Faulkner, Peter Robmann, I. Milcewicz-Mika, T. Zimmermann, A.S. Belousov, S. Egli, Sergey Rusakov, M. Fleischer, Zhiqing Zhang, K. Nankov, L. N. Shtarkov, J. Feltesse, J. Cvach, A. Dubak, Gerhard Brandt, A. Schoening, Y. de Boer, A.J. Rahmat, A. Bunyatyan, D. Salek, Marina Rotaru, S. Backovic, U. Straumann, Y. Soloviev, K. Nowak, Bogdan Povh, V. Volchinski, Zuzana Rurikova, N. Loktionova, F. Sefkow, H. Meyer, Y. Vazdik, A. Hovhannisyan, Stephen Maxfield, P.D. Thompson, M. Deak, T. Preda, K. Krueger, V. Korbel, Andrew Mehta, N. Gogitidze, J. Zacek, P. A. Smirnov, I. Tsurin, M. Brinkmann, Katerina Lipka, Xavier Janssen, Paul Richard Newman, Grzegorz Nowak, V. Tchoulakov, A. Dossanov, P. Sopicki, R.N. Shaw-West, Mila Pandurovic, A. M. Fomenko, A. Petrukhin, A. W. Jung, Voica Radescu, Christoph Grab, J. G. Contreras, T. N. Trinh, M.-O. Boenig, Vladimir Andreev, H. U. Martyn, Matthias Klein, G. Thompson, Z. Staykova, A. Lebedev, G. Herrera, Michael R. Wessels, Magnus Hansson, M. Del Degan, V. Brisson, F. Salvaire, Nicolas Berger, L. Goerlich, D. Haidt, A. De Roeck, H. Henschel, J.C. Bizot, B. Tseepeldorj, Eram Rizvi, S. Levonian, A. Zhelezov, V. Dodonov, G. Cozzika, Anna Kropivnitskaya, R. Felst, J-P. Meyer, I. Smijanic, V. Lendermann, C. Schmitz, Hannes Jung, Alexander Zhokin, C. Vallée, A.-I. Lucaci-Timoce, K. Mueller, L. Bystritskaya, H. Zohrabyan, D. Wegener, T. Toll, Hans-Christian Schultz-Coulon, V. Efremenko, Tomas Hreus, S. Mikocki, V. Cerny, B. Olivier, B. Stella, F. Zomer, Stefan Schmitt, Christian Helebrant, Vladimir Palichik, A. Astvatsatourov, John A Coughlan, Pierre Marage, I. Glushkov, O. Behnke, P. Truoel, D. Sunar, A. Cholewa, L. Lytkin, Cristinel Diaconu, Daniel Pitzl, D. Traynor, A. Asmone, F. Cassol-Brunner, Jan Kretzschmar, and Andrej Liptaj

Subjects
Quantum chromodynamics, Physics, Nuclear and High Energy Physics, Range (particle radiation), Particle physics, Proton, 010308 nuclear & particles physics, Parton, HERA, 01 natural sciences, law.invention, Nuclear physics, Cross section (physics), law, 0103 physical sciences, Physics::Accelerator Physics, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics, Collider, Beam (structure)
Abstract

A first measurement is reported of the longitudinal proton structure function FL(X, Q(2)) at the ep collider HERA. It is based on inclusive deep inelastic e(+)p scattering cross section measurements with a positron beam energy of 27.5 GeV and proton beam energies of 920, 575 and 460 GeV. Employing the energy dependence of the cross section, FL is measured in a range of squared four-momentum transfers 12

Published
2008

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

Author

E. Wünsch, G. Tsipolitis, M. Deak, Dave Sankey, Daniel Pitzl, J. Delvax, Wolfgang Lange, M. Goettlich, A. M. Fomenko, G. Thompson, Pavel Murin, D. Traynor, Z. Staykova, A. Asmone, J. E. Olsson, G. D. Patel, V. Lubimov, W. Bartel, T. Kluge, I. Picuric, Guenter Eckerlin, J. Gayler, Leif J. Jönsson, Benoit Roland, Malte Hildebrandt, Biljana Antunović, D.P. Johnson, Paul Richard Newman, Grzegorz Nowak, F. Cassol-Brunner, F. Eisele, T. Sykora, K. Müller, F. W. Büsser, C. Niebuhr, Th. Papadopoulou, M. Fleischer, R. Oganezov, A. Petrukhin, H. Henschel, J.C. Bizot, Bogdan Povh, F. Sefkow, Laurent Favart, T. Anthonis, S. Egli, M. Kraemer, T. Klimkovich, Natasa Raicevic, J. Feltesse, K. Nankov, Y. Soloviev, M. Kapichine, R. Plaakyt, L. N. Shtarkov, J. V. Morris, Jan Kretzschmar, Richard Polifka, S. Schmidt, C. Risler, V. Cerny, Vincent Boudry, B. Olivier, Jenny List, P. E. Reimer, K. H. Hiller, M. Nozicka, Peter Robmann, A.J. Rahmat, A. Bunyatyan, R. C. W. Henderson, N. Loktionova, Andrej Liptaj, A. N. Morozov, D. Perez-Astudillo, V. Chekelian, D. Sunar, Paul Laycock, E. Malinovski, Emmanuel Sauvan, G. Grindhammer, R. Weber, J. Cvach, A. Hovhannisyan, T. Preda, L. Finke, J. Zacek, C. Wissing, T. Toll, Ivan Smiljanic, B. Delcourt, Voica Radescu, Christoph Grab, Michael R. Wessels, V. Brisson, B. R. Grell, F. Tomasz, K. Nowak, Stephen Maxfield, T. N. Trinh, T. Zimmermann, J. Stiewe, I. Tsurin, V. Andreev, Katerina Lipka, David M. South, Sakar Osman, I. R. Kenyon, C. Pascaud, J. Záleák, A. Astvatsatourov, Mila Pandurovic, A. Cholewa, Andrew Mehta, J. Bracinik, V. Tchoulakov, N. Gogitidze, A. Lebedev, A. Eliseev, E. Barrelet, J. G. Contreras, A. Mohamed, S. Backovic, Zuzana Rurikova, A. W. Jung, P. Baranov, A. Baghdasaryan, A. Rostovtsev, Y.C. Zhu, P. Prideaux, F. Salvaire, D. Haidt, T. J. Sloan, K. Daum, Christian Helebrant, R.N. Shaw-West, I. Sheviakov, Eram Rizvi, G. Heinzelmann, Judith Katzy, E. A. De Wolf, Karlheinz Meier, R. Roosen, K. Krastev, L. Lytkin, Cristinel Diaconu, G. Latovika-Medin, Pierre Marage, A. Dubak, S. Levonian, V. Dodonov, G. Herrera, R. Wolf, M. E. Janssen, Fabian Zomer, Ll. Marti, Dirk L. Hoffmann, I. Bozovic-Jelisavcic, G. Franke, A. Specka, Y. de Boer, L. Lindfeld, S. Habib, P.J.W. Faulkner, John A Coughlan, A.S. Belousov, Sergey Rusakov, D. Utkin, P. Truöl, Hans-Christian Schultz-Coulon, V. Jemanov, I. Glushkov, V. Spaskov, Gang Li, G. Cozzika, E. E. Elsen, Roland Horisberger, A. Valkárová, Y. Vazdik, B. Stella, Stefan Schmitt, A. D.R. Vargas Trevino, Zhen Zhang, M. Jacquet, Ricardo Lopez-Fernandez, H. U. Martyn, A. Falkiewicz, P.D. Thompson, M. Sauter, D. Wegener, Emmanuelle Perez, K. Krüger, A. B. Meyer, C. Schmitz, M. Steder, Hannes Jung, Alexander Zhokin, C. Vallée, Stefania Xella, Tomas Hreus, R. Eichler, V. Yeganov, T. Frisson, S. M. Piec, O. Behrendt, H. Peng, S. Vinokurova, Vladimir Palichik, A. Aktas, I. Milcewicz-Mika, P. Kostka, V. Efremenko, Matthias Ulrich Mozer, F. Moreau, S. J. Aplin, S. Mikocki, O. Behnke, J. Turnau, Calin Alexa, A. Fedotov, Dusan Bruncko, B. Naroska, K. B. Cantun Avila, K. Begzsuren, S. Ginzburgskaya, C. Kiesling, A. De Roeck, E. Tzamariudaki, I. Tsakov, A. J. Campbell, S. Ghazaryan, Th. Naumann, K. Urban, G. Leibenguth, Murrough Landon, W. Yan, T. Greenshaw, E. Gabathuler, I. Panagoulias, A. Schöning, S. Gorbounov, J. Ferencei, M. Martisikova, V. Michels, S. Essenov, J. B. Dainton, M.-O. Boenig, T. Ravdandorj, Claus Kleinwort, A. Knutsson, Nicolas Berger, A. Makankine, P. Van Mechelen, Max Klein, G. Buschhorn, D. Ozerov, A. Zhelezov, S. Baudrand, T.H. Tran, Adrian Perieanu, P. A. Smirnov, Gerhard Brandt, V. Volchinski, H. Meyer, Xavier Janssen, A. Nikiforov, J-P. Meyer, Maxime Gouzevitch, Benno List, M. Brinkmann, V. Korbel, V. Lendermann, Magnus Hansson, M. Del Degan, A.-I. Lucaci-Timoce, C. Werner, L. Goerlich, L. Bystritskaya, G. Weber, H. Zohrabyan, U. Straumann, Laurent Schoeffel, B. Tseepeldorj, Karel Cerny, Matthew Beckingham, Anna Kropivnitskaya, R. Felst, and A. Glazov

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Jet (fluid), Neutral current, 010308 nuclear & particles physics, Scattering, High Energy Physics::Phenomenology, Four-momentum, Perturbative QCD, HERA, Deep inelastic scattering, 01 natural sciences, 7. Clean energy, Nuclear physics, Cross section (physics), 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics
Abstract

Inclusive jet production is studied in neutral current deep-inelastic positron-proton scattering at large four momentum transfer squared Q^2>150 GeV^2 with the H1 detector at HERA. Single and double differential inclusive jet cross sections are measured as a function of Q^2 and of the transverse energy E_T of the jets in the Breit frame. The measurements are found to be well described by calculations at next-to-leading order in perturbative QCD. The running of the strong coupling is demonstrated and the value of alpha_s(M_Z) is determined. The ratio of the inclusive jet cross section to the inclusive neutral current cross section is also measured and used to extract a precise value for alpha_s(M_Z)=0.1193+/-0.0014(exp.)^{+0.0047}_{-0.0030}(th.)+/-0.0016(pdf).

Published
2007

7. Diffractive open charm production in deep-inelastic scattering and photoproduction at HERA

Author

S. Hussain, C. Grab, G. Thompson, H. Henschel, J.C. Bizot, G. Tsipolitis, Paul Laycock, E. Malinovski, Emmanuel Sauvan, G. Grindhammer, Judith Katzy, G. Cozzika, C. Schmitz, Hannes Jung, Alexander Zhokin, C. Vallée, W. Yan, Peter Robmann, A. M. Fomenko, E. Gabathuler, N. Loktionova, V. Jemanov, A. Hovhannisyan, Gero Flucke, M. Kapichine, M. Nozicka, H. Peng, I. Tsurin, G. Laštovička-Medin, B. Delcourt, D. Mladenov, Matthias Ulrich Mozer, Søren Schmidt, A. Baghdasaryan, A. Rostovtsev, A. Lebedev, A. Fedotov, Dusan Bruncko, M. Gouzevitch, K. B. Cantun Avila, S. Ginzburgskaya, C. Kiesling, A. De Roeck, F. Salvaire, E. Tzamariudaki, A. J. Campbell, D. Haidt, J. Feltesse, K. H. Hiller, R. C. W. Henderson, Laurent Schoeffel, Paul Newman, T. Zimmermann, A. Aktas, P. Baranov, B. Naroska, J. Cvach, M. Goettlich, D. Utkin, R.N. Shaw-West, A. Rimmer, C. Risler, C. Niebuhr, M. Fleischer, T. J. Sloan, Eram Rizvi, A. Dubak, P.J.W. Faulkner, G. Heinzelmann, A. Knutsson, Pavel Murin, K. Nowak, A.S. Belousov, T. Greenshaw, Sergey Rusakov, P. Truöl, Magnus Hansson, S. Egli, Y. Vazdik, B. List, M. Del Degan, V. Dodonov, Stefania Xella, S. Backovic, Th. D. Papadopoulou, M. Ibbotson, Y. Soloviev, Max Klein, G. Weber, C. Gwilliam, E. E. Elsen, U. Straumann, Thomas Naumann, Bogdan Povh, F. Sefkow, A. D.R. Vargas Trevino, J. Ferencei, Zuzana Rurikova, A. Astvatsatourov, Mila Pandurovic, K. Urban, M. Martisikova, Murrough Landon, A. Makankine, Erika Garutti, D. Wegener, Katerina Lipka, S. Ghazaryan, H. Lueders, G. Buschhorn, D. Ozerov, V. Tchoulakov, L. Goerlich, C. Wissing, Wolfgang Lange, V. Korbel, A. Specka, M. Sauter, E. Wünsch, R. Weber, Claus Kleinwort, P. A. Smirnov, M. Kraemer, Dave Sankey, S. M. Piec, Laurent Favart, M. Brinkmann, H. U. Martyn, J. Gayler, T. Anthonis, V. Efremenko, K. Müller, G. D. Patel, Matthew Beckingham, S. Gorbounov, T. Kluge, Stephen Maxfield, S. Mikocki, Biljana Antunović, G. Leibenguth, D.P. Johnson, T. Sykora, J. Stiewe, V. Chekelian, Anna Kropivnitskaya, E. Perez, Andrew Mehta, J. Bracinik, N. Gogitidze, R. Felst, I. Picuric, C. Pascaud, C. Werner, Guenter Eckerlin, André Schöning, J. V. Morris, Jenny List, A. W. Jung, M. Wessels, I. Sheviakov, P. E. Reimer, G. Herrera, Bradley Cox, A.J. Rahmat, A. Bunyatyan, A. Nikiforov, M. Jacquet, K. Krüger, R. Wolf, T. Frisson, Karel Cerny, J. Zálešák, P. Van Mechelen, L. Bystritskaya, V. Spaskov, S. Baudrand, K. Wacker, Ivan Smiljanic, I. Milcewicz-Mika, Anton Babaev, J. G. Contreras, A. Mohamed, P. Prideaux, A. Glazov, P. D. Thompson, V. Yeganov, H. Zohrabyan, A. Stoilov, Ll. Marti, I. Bozovic-Jelisavcic, L. Finke, R. Marshall, F. Moreau, S. J. Aplin, R. Plačakytė, Y.C. Zhu, S. Essenov, F. Zomer, K. Daum, V. Michels, J. B. Dainton, V. Andreev, V. Lendermann, A.-I. Lucaci-Timoce, G. Knies, Christian Helebrant, G. Franke, J. Žáček, Leif J. Jönsson, Benoit Roland, Hans-Christian Schultz-Coulon, T. Klimkovich, A. Falkewicz, Tomas Hreus, R. Eichler, F. Eisele, R. Oganezov, V. Cerny, B. Olivier, John A Coughlan, Grzegorz Nowak, A. Petrukhin, V. Brisson, E. Barrelet, T. Toll, E. A. De Wolf, Karlheinz Meier, R. Roosen, Y. de Boer, B. Stella, Stefan Schmitt, Vladimir Palichik, V. Lubimov, K. Nankov, L. N. Shtarkov, M.-O. Boenig, Zhen Zhang, Ricardo Lopez-Fernandez, S. Levonian, I. Panagoulias, M. Steder, S. Habib, Sakar Osman, D. Hoffmann, Andreas Meyer, Nicolas Berger, David South, A. Usik, J. Zimmermann, A. Eliseev, J. E. Olsson, A. Zhelezov, W. Bartel, J-P. Meyer, Malte Hildebrandt, F. W. Büsser, I. R. Kenyon, Natasa Raicevic, O. Behrendt, Vincent Boudry, S. Vinokurova, A. N. Morozov, P. Kostka, D. Perez-Astudillo, M. Gregori, J. Turnau, Adrian Perieanu, B. R. Grell, Gerhard Brandt, V. Volchinski, K. Begzsuren, H. Meyer, F. Tomasz, Xavier Janssen, I. Tsakov, T. N. Trinh, Roland Horisberger, A. Valkárová, K. Krastev, L. Lindfeld, D. Sunar, L. Lytkin, Cristinel Diaconu, Daniel Pitzl, D. Traynor, A. Asmone, F. Cassol-Brunner, M. Urban, Jan Kretzschmar, Andrej Liptaj, Pierre Marage, I. Glushkov, O. Behnke, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée (DAPNIA), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), H1, (ukupan broj autora: 294), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), and Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)

Subjects
Physics, Quantum chromodynamics, Particle physics, Physics and Astronomy (miscellaneous), Meson, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Hadron, FOS: Physical sciences, Parton, HERA, Deep inelastic scattering, 01 natural sciences, High Energy Physics - Experiment, Charm quark, Nuclear physics, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], ddc:530, High Energy Physics::Experiment, Rapidity, Nuclear Experiment, 010306 general physics, Engineering (miscellaneous)
Abstract

Measurements are presented of diffractive open charm production at HERA. The event topology is given by ep -> eX Y where the system X contains at least one charmed hadron and is well separated by a large rapidity gap from a leading low-mass proton remnant system Y. Two analysis techniques are used for the cross section measurements. In the first, the charm quark is tagged by the reconstruction of a D*(2010) meson. This technique is used in deep-inelastic scattering (DIS) and photoproduction. In the second, a method based on the displacement of tracks from the primary vertex is used to measure the open charm contribution to the inclusive diffractive cross section in DIS. The measurements are compared with next-to-leading order QCD predictions based on diffractive parton density functions previously obtained from a QCD analysis of the inclusive diffractive cross section at H1. A good agreement is observed in the full kinematic regime, which supports the validity of QCD factorization for open charm production in diffractive DIS and photoproduction., 39 pages, 13 figures, 8 tables

Published
2007

8. Search for a narrow baryonic resonance decaying toKs0porKs0p¯in deep inelastic scattering at HERA

Author

S. Levonian, A. M. Fomenko, Pierre Marage, Peter Robmann, Stephen Maxfield, C. Gerlich, Paul Laycock, L. Finke, B. Olivier, I. Glushkov, F. Zomer, H-C. Schultz-Coulon, J. Stiewe, Zhen Zhang, D. P. C. Sankey, Y.C. Zhu, K. Daum, Ricardo Lopez-Fernandez, E. Malinovski, Emmanuel Sauvan, G. Grindhammer, Magnus Hansson, M. Del Degan, C. Wissing, Andrew Mehta, J. Bracinik, Ewelina Lobodzinska, Matthew Beckingham, P. Baranov, M. Steder, D. Hoffmann, T. Zimmermann, L. Goerlich, Anna Kropivnitskaya, Roland Horisberger, A. Valkárová, R. Felst, N. Gogitidze, A. Usik, G. Cozzika, T. Toll, V. Michels, W.D. Dau, J. B. Dainton, G. Knies, H. Peng, V. Andreev, S. Backovic, Thorsten Lux, C. Niebuhr, L. Janauschek, David South, T. Kluge, O. Behnke, D. Mladenov, B. R. Grell, S. Egli, V. Jemanov, F. Tomasz, Matthias Ulrich Mozer, J. Zimmermann, H. Lueders, K. Krüger, C. Schmitz, C. Pascaud, T. J. Sloan, P.J.W. Faulkner, A.S. Belousov, Hannes Jung, Alexander Zhokin, Y. Soloviev, Sergey Rusakov, P. Truöl, V. Lubimov, Dusan Bruncko, J. Becker, C. Vallée, Guenter Eckerlin, E. Barrelet, Z. Rurikova, A. Fedotov, A. W. Jung, B. Naroska, D. Sunar, B. Stella, D. Lüke, Stefan Schmitt, S. Baumgartner, P. E. Reimer, S. Ginzburgskaya, Søren Schmidt, C. Kiesling, A. De Roeck, E. Tzamariudaki, A. J. Campbell, K. Krastev, G. Herrera, Bradley Cox, Laurent Schoeffel, A. Dubak, K. H. Hiller, R. C. W. Henderson, G. Leibenguth, Sakar Osman, M. Jacquet, L. Lindfeld, W. Yan, T. Greenshaw, Christoph Grab, Erika Garutti, R. Wolf, K. Urban, K. Nankov, L. N. Shtarkov, E. Wünsch, A. Eliseev, C. Veelken, E. A. De Wolf, Karlheinz Meier, R. Roosen, Anton Babaev, N. Loktionova, J. E. Olsson, W. Bartel, S. Hussain, J. Ferencei, M. Martisikova, G. Thompson, Adrian Perieanu, S. Gorbounov, L. Lytkin, A. Specka, Malte Hildebrandt, Cristinel Diaconu, Vladimir Palichik, J. G. Contreras, A. Mohamed, Georgios Tsipolitis, M. Fleischer, T. Frisson, G. Weber, U. Straumann, A. Aktas, I. Milcewicz-Mika, G. Franke, P. Prideaux, A. Hovhannisyan, Claus Kleinwort, Th. Naumann, J. Žáček, A. Baghdasaryan, A. Rostovtsev, Daniel Pitzl, Wolfgang Lange, R. Weber, F. W. Büsser, O. Behrendt, S. Vinokurova, Y. de Boer, J. Feltesse, J. Gayler, V. Yeganov, D. Traynor, I. Tsurin, Ilias Panagoulias, A. Asmone, F. Moreau, S. J. Aplin, H. Henschel, F. Cassol-Brunner, Bogdan Povh, P. Kostka, F. Sefkow, L. Bystritskaya, J.C. Bizot, P. Van Mechelen, Natasa Raicevic, S. Baudrand, Leif J. Jönsson, Benoit Roland, V. Chekelian, L. Hajduk, D. Utkin, E. Gabathuler, M. Urban, B. List, J. Turnau, B. Portheault, H. U. Martyn, Matthias Klein, Theodora Papadopoulou, S. Essenov, M. Ismail, M. Kapichine, M. Nozicka, Vincent Boudry, Gerhard Brandt, John A Coughlan, E. E. Elsen, I. Tsakov, A. N. Morozov, H. Zohrabyan, D. Perez-Astudillo, M. Gregori, David Milstead, P. A. Smirnov, R. Plačakytė, A. Schöning, E. Rizvi, G. D. Patel, Jan Kretzschmar, B. Delcourt, V. Volchinski, Andrej Liptaj, S. Ghazaryan, Paul Richard Newman, Grzegorz Nowak, Pavel Murin, M. Ibbotson, T. Klimkovich, I. Sheviakov, S. Schätzel, Biljana Antunović, Katerina Lipka, A. Falkewicz, H. Meyer, Emmanuelle Perez, Karel Cerny, Laurent Favart, V. Tchoulakov, R.N. Shaw-West, A. Petrukhin, T. Anthonis, J. Zálešák, Xavier Janssen, V. Spaskov, D.P. Johnson, K. Wacker, A. B. Meyer, Tomas Hreus, R. Eichler, A. Glazov, V. Korbel, Y. Vazdik, N. Malden, I. R. Kenyon, A. Stoilov, G. Laštovička-Medin, Michael R. Wessels, V. Brisson, P.D. Thompson, Stefania Xella, C. Werner, A. Rimmer, J. V. Morris, Jenny List, A. Knutsson, A. Makankine, A.J. Rahmat, A. Bunyatyan, Ll. Marti, G. Buschhorn, D. Ozerov, V. Lendermann, F. Eisele, M.-O. Boenig, S. Mangano, A. Nikiforov, R. Oganezov, Nicolas Berger, R. Marshall, A. Zhelezov, A. Lebedev, F. Salvaire, D. Haidt, A.-I. Lucaci-Timoce, G. Heinzelmann, V. Dodonov, A. D.R. Vargas Trevino, V. Cerny, G. Flucke, Jean-Arcady Meyer, C. Risler, C. Gwilliam, M. P. J. Landon, A. Astvatsatourov, Judith Katzy, B. Wessling, K. Müller, J. Cvach, K. Nowak, M. Goettlich, D. Wegener, V. Efremenko, and S. Mikocki

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Scattering, Resonance, Sigma, HERA, Deep inelastic scattering, 01 natural sciences, Pentaquark, Baryon, Nuclear physics, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics, Bar (unit)
Abstract

A search for a narrow baryonic resonance decaying to K(s)(0)p or K-s(0)(p) over bar is carried out in deep inelastic ep scattering with the H1 detector at HERA. ss Such a resonance could be a strange pentaquark Theta(+), evidence for which has been reported by several experiments. The K(s)(0)p and K-s(0)(p) over bar invariant ss mass distributions presented here do not show any significant peak in the mass range from threshold up to 1.7 GeV. Mass dependent upper limits on sigma(ep -> e Theta X+) x BR(Theta(+) -> K(0)p) are obtained at the 95% confidence level.

Published
2006

9. Combined measurement and QCD analysis of the inclusive e(+/-)p scattering cross sections at HERA

Author

F. D. AARON, H. ABRAMOWICZ, I. ABT, L. ADAMCZYK, M. ADAMUS, M. ALDAYA MARTIN, C. ALEXA, V. ANDREEV, S. ANTONELLI, P. ANTONIOLI, A. ANTONOV, B. ANTUNOVIC, M. ARNEODO, V. AUSHEV, O. BACHYNSKA, S. BACKOVIC, A. BAGHDASARYAN, A. BAMBERGER, A. N. BARAKBAEV, G. BARBAGLI, G. BARI, F. BARREIRO, E. BARRELET, W. BARTEL, D. BARTSCH, K. BEGZSUREN, O. BEHNKE, J. BEHR, U. BEHRENS, L. BELLAGAMBA, A. BELOUSOV, A. BERTOLIN, S. BHADRA, M. BINDI, J. C. BIZOT, C. BLOHM, T. BOLD, E. G. BOOS, M. BORODIN, K. BORRAS, D. BOSCHERINI, D. BOT, V. BOUDRY, S. K. BOUTLE, I. BOZOVIC JELISAVCIC, J. BRACINIK, G. BRANDT, M. BRINKMANN, V. BRISSON, I. BROCK, E. BROWNSON, R. BRUGNERA, N. BRUMMER, D. BRUNCKO, A. BRUNI, G. BRUNI, B. BRZOZOWSKA, A. BUNYATYAN, G. BUSCHHORN, P. J. BUSSEY, J. M. BUTTERWORTH, B. BYLSMA, L. BYSTRITSKAYA, A. CALDWELL, A. J. CAMPBELL, K. B. CANTUN AVILA, M. CAPUA, R. CARLIN, C. D. CATTERALL, K. CERNY, V. CERNY, S. CHEKANOV, V. CHEKELIAN, A. CHOLEWA, J. CHWASTOWSKI, J. CIBOROWSKI, R. CIESIELSKI, F. CINDOLO, J. G. CONTRERAS, A. M. COOPER SARKAR, N. COPPOLA, M. CORRADI, F. CORRIVEAU, M. COSTA, J. A. COUGHLAN, G. COZZIKA, J. CVACH, G. D'AGOSTINI, J. B. DAINTON, F. DAL CORSO, K. DAUM, M. DEAK, J. DE FAVEREAU, B. DELCOURT, M. DEL DEGAN, J. DEL PESO, J. DELVAX, R. K. DEMENTIEV, S. DE PASQUALE, M. DERRICK, R. C. E. DEVENISH, E. A. DE WOLF, C. DIACONU, D. DOBUR, V. DODONOV, B. A. DOLGOSHEIN, A. DOSSANOV, A. T. DOYLE, V. DRUGAKOV, A. DUBAK, L. S. DURKIN, S. DUSINI, G. ECKERLIN, V. EFREMENKO, S. EGLI, Y. EISENBERG, A. ELISEEV, E. ELSEN, P. F. ERMOLOV, A. ESKREYS, A. FALKIEWICZ, S. FANG, L. FAVART, S. FAZIO, A. FEDOTOV, R. FELST, J. FELTESSE, J. FERENCEI, J. FERRANDO, M. I. FERRERO, J. FIGIEL, D. J. FISCHER, M. FLEISCHER, A. FOMENKO, M. FORREST, B. FOSTER, S. FOURLETOV, E. GABATHULER, A. GALAS, E. GALLO, A. GARFAGNINI, J. GAYLER, A. GEISER, S. GHAZARYAN, I. GIALAS, L. K. GLADILIN, D. GLADKOV, C. GLASMAN, A. GLAZOV, I. GLUSHKOV, L. GOERLICH, N. GOGITIDZE, Y.U. A. GOLUBKOV, P. GOTTLICHER, M. GOUZEVITCH, C. GRAB, I. GRABOWSKA BOLD, J. GREBENYUK, T. GREENSHAW, I. GREGOR, B. R. GRELL, G. GRIGORESCU, G. GRINDHAMMER, G. GRZELAK, C. GWENLAN, T. HAAS, S. HABIB, D. HAIDT, W. HAIN, R. HAMATSU, J. C. HART, H. HARTMANN, G. HARTNER, C. HELEBRANT, R. C. W. HENDERSON, E. HENNEKEMPER, H. HENSCHEL, M. HERBST, G. HERRERA, M. HILDEBRANDT, E. HILGER, K. H. HILLER, D. HOCHMAN, D. HOFFMANN, U. HOLM, R. HORI, R. HORISBERGER, K. HORTON, T. HREUS, A. HUTTMANN, G. IACOBUCCI, Z. A. IBRAHIM, Y. IGA, R. INGBIR, M. ISHITSUKA, M. JACQUET, H. P. JAKOB, X. JANSSEN, F. JANUSCHEK, M. JIMENEZ, T. W. JONES, L. JONSSON, A. W. JUNG, H. JUNG, M. JUNGST, I. KADENKO, B. KAHLE, B. KAMALUDDIN, S. KANANOV, T. KANNO, M. KAPICHINE, U. KARSHON, F. KARSTENS, I. I. KATKOV, J. KATZY, M. KAUR, P. KAUR, I. R. KENYON, A. KERAMIDAS, L. A. KHEIN, C. KIESLING, J. Y. KIM, D. KISIELEWSKA, S. KITAMURA, R. KLANNER, M. KLEIN, U. KLEIN, C. KLEINWORT, T. KLUGE, A. KNUTSSON, E. KOFFEMAN, R. KOGLER, D. KOLLAR, P. KOOIJMAN, I.E. KOROL, I. A. KORZHAVINA, P. KOSTKA, A. KOTANSKI, U. KOTZ, H. KOWALSKI, M. KRAEMER, K. KRASTEV, J. KRETZSCHMAR, A. KROPIVNITSKAYA, K. KRUGER, P. KULINSKI, O. KUPRASH, K. KUTAK, M. KUZE, V. A. KUZMIN, M. P. J. LANDON, W. LANGE, G. LASTOVICKA MEDIN, P. LAYCOCK, A. LEBEDEV, A. LEE, G. LEIBENGUTH, V. LENDERMANN, B. B. LEVCHENKO, S. LEVONIAN, A. LEVY, G. LI, V. LIBOV, S. LIMENTANI, T. Y. LING, K. LIPKA, A. LIPTAJ, M. LISOVYI, B. LIST, J. LIST, E. LOBODZINSKA, W. LOHMANN, B. LOHR, E. LOHRMANN, J. H. LOIZIDES, N. LOKTIONOVA, K. R. LONG, A. LONGHIN, D. LONTKOVSKYI, R. LOPEZ FERNANDEZ, V. LUBIMOV, J. LUKASIK, O. Y.U. LUKINA, P. LUZNIAK, J. MAEDA, S. MAGILL, A. MAKANKINE, I. MAKARENKO, E. MALINOVSKI, J. MALKA, R. MANKEL, P. MARAGE, A. MARGOTTI, G. MARINI, L.L. MARTI, J. F. MARTIN, H. U. MARTYN, A. MASTROBERARDINO, T. MATSUMOTO, M. C. K. MATTINGLY, S. J. MAXFIELD, A. MEHTA, I. A. MELZER PELLMANN, A. B. MEYER, H. MEYER, J. MEYER, S. MIGLIORANZI, S. MIKOCKI, I. MILCEWICZ MIKA, F. MOHAMAD IDRIS, V. MONACO, A. MONTANARI, F. MOREAU, A. MOROZOV, J. D. MORRIS, J. V. MORRIS, M. U. MOZER, M. MUDRINIC, K. MULLER, P. MURIN, B. MUSGRAVE, K. NAGANO, T. NAMSOO, R. NANIA, T.H. NAUMANN, P. R. NEWMAN, D. NICHOLASS, C. NIEBUHR, A. NIGRO, A. NIKIFOROV, D. NIKITIN, Y. NING, U. NOOR, D. NOTZ, G. NOWAK, K. NOWAK, R. J. NOWAK, M. NOZICKA, A. E. NUNCIO QUIROZ, B. Y. OH, N. OKAZAKI, K. OLIVER, B. OLIVIER, K. OLKIEWICZ, J. E. OLSSON, Y.U. ONISHCHUK, S. OSMAN, O. OTA, D. OZEROV, V. PALICHIK, I. PANAGOULIAS, M. PANDUROVIC, T.H. PAPADOPOULOU, K. PAPAGEORGIU, A. PARENTI, C. PASCAUD, G. D. PATEL, E. PAUL, J. M. PAWLAK, B. PAWLIK, O. PEJCHAL, P. G. PELFER, A. PELLEGRINO, E. PEREZ, W. PERLANSKI, H. PERREY, A. PETRUKHIN, I. PICURIC, S. PIEC, K. PIOTRZKOWSKI, D. PITZL, R. PLACAKYTE, P. PLUCINSKI, B. POKORNY, N. S. POKROVSKIY, R. POLIFKA, A. POLINI, B. POVH, A. S. PROSKURYAKOV, M. PRZYBYCIEN, V. RADESCU, A. J. RAHMAT, N. RAICEVIC, A. RASPIAREZA, A. RAVAL, T. RAVDANDORJ, D. D. REEDER, P. REIMER, B. REISERT, Z. REN, J. REPOND, Y. D. RI, E. RIZVI, A. ROBERTSON, P. ROBMANN, B. ROLAND, P. ROLOFF, E. RON, R. ROOSEN, A. ROSTOVTSEV, M. ROTARU, I. RUBINSKY, J. E. RUIZ TABASCO, Z. RURIKOVA, S. RUSAKOV, M. RUSPA, R. SACCHI, D. SALEK, A. SALII, U. SAMSON, D. P. C. SANKEY, M. SAUTER, E. SAUVAN, A. A. SAVIN, D. H. SAXON, M. SCHIOPPA, S. SCHLENSTEDT, P. SCHLEPER, W. B. SCHMIDKE, S. SCHMITT, U. SCHNEEKLOTH, L. SCHOEFFEL, V. SCHONBERG, A. SCHONING, T. SCHORNER SADENIUS, H. C. SCHULTZ COULON, J. SCHWARTZ, F. SCIULLI, F. SEFKOW, R. N. SHAW WEST, L. M. SHCHEGLOVA, R. SHEHZADI, S. SHIMIZU, L. N. SHTARKOV, S. SHUSHKEVICH, I. SINGH, I. O. SKILLICORN, T. SLOAN, W. SLOMINSKI, I. SMILJANIC, W. H. SMITH, V. SOLA, A. SOLANO, Y. SOLOVIEV, D. SON, P. SOPICKI, I.U. SOROKIN, V. SOSNOVTSEV, D. SOUTH, V. SPASKOV, A. SPECKA, A. SPIRIDONOV, H. STADIE, L. STANCO, Z. STAYKOVA, M. STEDER, B. STELLA, A. STERN, T. P. STEWART, A. STIFUTKIN, G. STOICEA, P. STOPA, U. STRAUMANN, S. SUCHKOV, D. SUNAR, G. SUSINNO, L. SUSZYCKI, T. SYKORA, J. SZTUK, D. SZUBA, J. SZUBA, A. D. TAPPER, E. TASSI, V. TCHOULAKOV, J. TERRON, T. THEEDT, G. THOMPSON, P. D. THOMPSON, H. TIECKE, K. TOKUSHUKU, T. TOLL, F. TOMASZ, J. TOMASZEWSKA, T. H. TRAN, D. TRAYNOR, T. N. TRINH, P. TRUOL, I. TSAKOV, B. TSEEPELDORJ, T. TSURUGAI, M. TURCATO, J. TURNAU, T. TYMIENIECKA, K. URBAN, C. URIBE ESTRADA, A. VALKAROVA, C. VALLEE, P. VAN MECHELEN, A. VARGAS TREVINO, Y. VAZDIK, M. VAZQUEZ, A. VERBYTSKYI, V. VIAZLO, S. VINOKUROVA, N. N. VLASOV, V. VOLCHINSKI, O. VOLYNETS, M. VON DEN DRIESCH, R. WALCZAK, W. A. T. WAN ABDULLAH, D. WEGENER, J. J. WHITMORE, J. WHYTE, L. WIGGERS, M. WING, C.H. WISSING, M. WLASENKO, G. WOLF, H. WOLFE, K. WRONA, E. WUNSCH, A. G. YAGUES MOLINA, S. YAMADA, Y. YAMAZAKI, R. YOSHIDA, C. YOUNGMAN, J. ZACEK, J. ZALESAK, A. F. ZARNECKI, L. ZAWIEJSKI, O. ZENAIEV, W. ZEUNER, Z. ZHANG, B. O. ZHAUTYKOV, A. ZHOKIN, C. ZHOU, A. ZICHICHI, T. ZIMMERMANN, H. ZOHRABYAN, M. ZOLKO, F. ZOMER, D. S. ZOTKIN, R. ZUS, BASILE, MAURIZIO, CIFARELLI, LUISA, CONTIN, ANDREA, SARTORELLI, GABRIELLA, Precision Frontier, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), H1, ZEUS, Zeus (IHEF, IoP, FNWI), H1 Collaboration, ZEUS Collaboration, F.D. AARON, H. ABRAMOWICZ, I. ABT, L. ADAMCZYK, M. ADAMUS, M. ALDAYA MARTIN, C. ALEXA, V. ANDREEV, S. ANTONELLI, P. ANTONIOLI, A. ANTONOV, B. ANTUNOVIC, M. ARNEODO, V. AUSHEV, O. BACHYNSKA, S. BACKOVIC, A. BAGHDASARYAN, A. BAMBERGER, A.N. BARAKBAEV, G. BARBAGLI, G. BARI, F. BARREIRO, E. BARRELET, W. BARTEL, D. BARTSCH, M. BASILE, K. BEGZSUREN, O. BEHNKE, J. BEHR, U. BEHRENS, L. BELLAGAMBA, A. BELOUSOV, A. BERTOLIN, S. BHADRA, M. BINDI, J.C. BIZOT, C. BLOHM, T. BOLD, E.G. BOOS, M. BORODIN, K. BORRAS, D. BOSCHERINI, D. BOT, V. BOUDRY, S.K. BOUTLE, I. BOZOVIC-JELISAVCIC, J. BRACINIK, G. BRANDT, M. BRINKMANN, V. BRISSON, I. BROCK, E. BROWNSON, R. BRUGNERA, N. BRUMMER, D. BRUNCKO, A. BRUNI, G. BRUNI, B. BRZOZOWSKA, A. BUNYATYAN, G. BUSCHHORN, P.J. BUSSEY, J.M. BUTTERWORTH, B. BYLSMA, L. BYSTRITSKAYA, A. CALDWELL, A.J. CAMPBELL, K.B. CANTUN AVILA, M. CAPUA, R. CARLIN, C.D. CATTERALL, K. CERNY, V. CERNY, S. CHEKANOV, V. CHEKELIAN, A. CHOLEWA, J. CHWASTOWSKI, J. CIBOROWSKI, R. CIESIELSKI, L. CIFARELLI, F. CINDOLO, A. CONTIN, J.G. CONTRERAS, A.M. COOPER-SARKAR, N. COPPOLA, M. CORRADI, F. CORRIVEAU, M. COSTA, J.A. COUGHLAN, G. COZZIKA, J. CVACH, G. D'AGOSTINI, J.B. DAINTON, F. DAL CORSO, K. DAUM, M. DEAK, J. DE FAVEREAU, B. DELCOURT, M. DEL DEGAN, J. DEL PESO, J. DELVAX, R.K. DEMENTIEV, S. DE PASQUALE, M. DERRICK, R.C.E. DEVENISH, E.A. DE WOLF, C. DIACONU, D. DOBUR, V. DODONOV, B.A. DOLGOSHEIN, A. DOSSANOV, A.T. DOYLE, V. DRUGAKOV, A. DUBAK, L.S. DURKIN, S. DUSINI, G. ECKERLIN, V. EFREMENKO, S. EGLI, Y. EISENBERG, A. ELISEEV, E. ELSEN, P.F. ERMOLOV, A. ESKREYS, A. FALKIEWICZ, S. FANG, L. FAVART, S. FAZIO, A. FEDOTOV, R. FELST, J. FELTESSE, J. FERENCEI, J. FERRANDO, M.I. FERRERO, J. FIGIEL, D.J. FISCHER, M. FLEISCHER, A. FOMENKO, M. FORREST, B. FOSTER, S. FOURLETOV, E. GABATHULER, A. GALAS, E. GALLO, A. GARFAGNINI, J. GAYLER, A. GEISER, S. GHAZARYAN, I. GIALAS, L.K. GLADILIN, D. GLADKOV, C. GLASMAN, A. GLAZOV, I. GLUSHKOV, L. GOERLICH, N. GOGITIDZE, YU.A. GOLUBKOV, P. GOTTLICHER, M. GOUZEVITCH, C. GRAB, I. GRABOWSKA-BOLD, J. GREBENYUK, T. GREENSHAW, I. GREGOR, B.R. GRELL, G. GRIGORESCU, G. GRINDHAMMER, G. GRZELAK, C. GWENLAN, T. HAAS, S. HABIB, D. HAIDT, W. HAIN, R. HAMATSU, J.C. HART, H. HARTMANN, G. HARTNER, C. HELEBRANT, R.C.W. HENDERSON, E. HENNEKEMPER, H. HENSCHEL, M. HERBST, G. HERRERA, M. HILDEBRANDT, E. HILGER, K.H. HILLER, D. HOCHMAN, D. HOFFMANN, U. HOLM, R. HORI, R. HORISBERGER, K. HORTON, T. HREUS, A. HUTTMANN, G. IACOBUCCI, Z.A. IBRAHIM, Y. IGA, R. INGBIR, M. ISHITSUKA, M. JACQUET, H.P. JAKOB, X. JANSSEN, F. JANUSCHEK, M. JIMENEZ, T.W. JONES, L. JONSSON, A.W. JUNG, H. JUNG, M. JUNGST, I. KADENKO, B. KAHLE, B. KAMALUDDIN, S. KANANOV, T. KANNO, M. KAPICHINE, U. KARSHON, F. KARSTENS, I.I. KATKOV, J. KATZY, M. KAUR, P. KAUR, I.R. KENYON, A. KERAMIDAS, L.A. KHEIN, C. KIESLING, J.Y. KIM, D. KISIELEWSKA, S. KITAMURA, R. KLANNER, M. KLEIN, U. KLEIN, C. KLEINWORT, T. KLUGE, A. KNUTSSON, E. KOFFEMAN, R. KOGLER, D. KOLLAR, P. KOOIJMAN, IE. KOROL, I.A. KORZHAVINA, P. KOSTKA, A. KOTANSKI, U. KOTZ, H. KOWALSKI, M. KRAEMER, K. KRASTEV, J. KRETZSCHMAR, A. KROPIVNITSKAYA, K. KRUGER, P. KULINSKI, O. KUPRASH, K. KUTAK, M. KUZE, V.A. KUZMIN, M.P.J. LANDON, W. LANGE, G. LASTOVICKA-MEDIN, P. LAYCOCK, A. LEBEDEV, A. LEE, G. LEIBENGUTH, V. LENDERMANN, B.B. LEVCHENKO, S. LEVONIAN, A. LEVY, G. LI, V. LIBOV, S. LIMENTANI, T.Y. LING, K. LIPKA, A. LIPTAJ, M. LISOVYI, B. LIST, J. LIST, E. LOBODZINSKA, W. LOHMANN, B. LOHR, E. LOHRMANN, J.H. LOIZIDES, N. LOKTIONOVA, K.R. LONG, A. LONGHIN, D. LONTKOVSKYI, R. LOPEZ-FERNANDEZ, V. LUBIMOV, J. LUKASIK, O.YU. LUKINA, P. LUZNIAK, J. MAEDA, S. MAGILL, A. MAKANKINE, I. MAKARENKO, E. MALINOVSKI, J. MALKA, R. MANKEL, P. MARAGE, A. MARGOTTI, G. MARINI, LL. MARTI, J.F. MARTIN, H.U. MARTYN, A. MASTROBERARDINO, T. MATSUMOTO, M.C.K. MATTINGLY, S.J. MAXFIELD, A. MEHTA, I.A. MELZER-PELLMANN, A.B. MEYER, H. MEYER, J. MEYER, S. MIGLIORANZI, S. MIKOCKI, I. MILCEWICZ-MIKA, F. MOHAMAD IDRIS, V. MONACO, A. MONTANARI, F. MOREAU, A. MOROZOV, J.D. MORRIS, J.V. MORRIS, M.U. MOZER, M. MUDRINIC, K. MULLER, P. MURIN, B. MUSGRAVE, K. NAGANO, T. NAMSOO, R. NANIA, TH. NAUMANN, P.R. NEWMAN, D. NICHOLASS, C. NIEBUHR, A. NIGRO, A. NIKIFOROV, D. NIKITIN, Y. NING, U. NOOR, D. NOTZ, G. NOWAK, K. NOWAK, R.J. NOWAK, M. NOZICKA, A.E. NUNCIO-QUIROZ, B.Y. OH, N. OKAZAKI, K. OLIVER, B. OLIVIER, K. OLKIEWICZ, J.E. OLSSON, YU. ONISHCHUK, S. OSMAN, O. OTA, D. OZEROV, V. PALICHIK, I. PANAGOULIAS, M. PANDUROVIC, TH. PAPADOPOULOU, K. PAPAGEORGIU, A. PARENTI, C. PASCAUD, G.D. PATEL, E. PAUL, J.M. PAWLAK, B. PAWLIK, O. PEJCHAL, P.G. PELFER, A. PELLEGRINO, E. PEREZ, W. PERLANSKI, H. PERREY, A. PETRUKHIN, I. PICURIC, S. PIEC, K. PIOTRZKOWSKI, D. PITZL, R. PLACAKYTE, P. PLUCINSKI, B. POKORNY, N.S. POKROVSKIY, R. POLIFKA, A. POLINI, B. POVH, A.S. PROSKURYAKOV, M. PRZYBYCIEN, V. RADESCU, A.J. RAHMAT, N. RAICEVIC, A. RASPIAREZA, A. RAVAL, T. RAVDANDORJ, D.D. REEDER, P. REIMER, B. REISERT, Z. REN, J. REPOND, Y.D. RI, E. RIZVI, A. ROBERTSON, P. ROBMANN, B. ROLAND, P. ROLOFF, E. RON, R. ROOSEN, A. ROSTOVTSEV, M. ROTARU, I. RUBINSKY, J.E. RUIZ TABASCO, Z. RURIKOVA, S. RUSAKOV, M. RUSPA, R. SACCHI, D. SALEK, A. SALII, U. SAMSON, D.P.C. SANKEY, G. SARTORELLI, M. SAUTER, E. SAUVAN, A.A. SAVIN, D.H. SAXON, M. SCHIOPPA, S. SCHLENSTEDT, P. SCHLEPER, W.B. SCHMIDKE, S. SCHMITT, U. SCHNEEKLOTH, L. SCHOEFFEL, V. SCHONBERG, A. SCHONING, T. SCHORNER-SADENIUS, H.C. SCHULTZ-COULON, J. SCHWARTZ, F. SCIULLI, F. SEFKOW, R.N. SHAW-WEST, L.M. SHCHEGLOVA, R. SHEHZADI, S. SHIMIZU, L.N. SHTARKOV, S. SHUSHKEVICH, I. SINGH, I.O. SKILLICORN, T. SLOAN, W. SLOMINSKI, I. SMILJANIC, W.H. SMITH, V. SOLA, A. SOLANO, Y. SOLOVIEV, D. SON, P. SOPICKI, IU. SOROKIN, V. SOSNOVTSEV, D. SOUTH, V. SPASKOV, A. SPECKA, A. SPIRIDONOV, H. STADIE, L. STANCO, Z. STAYKOVA, M. STEDER, B. STELLA, A. STERN, T.P. STEWART, A. STIFUTKIN, G. STOICEA, P. STOPA, U. STRAUMANN, S. SUCHKOV, D. SUNAR, G. SUSINNO, L. SUSZYCKI, T. SYKORA, J. SZTUK, D. SZUBA, J. SZUBA, A.D. TAPPER, E. TASSI, V. TCHOULAKOV, J. TERRON, T. THEEDT, G. THOMPSON, P.D. THOMPSON, H. TIECKE, K. TOKUSHUKU, T. TOLL, F. TOMASZ, J. TOMASZEWSKA, T.H. TRAN, D. TRAYNOR, T.N. TRINH, P. TRUOL, I. TSAKOV, B. TSEEPELDORJ, T. TSURUGAI, M. TURCATO, J. TURNAU, T. TYMIENIECKA, K. URBAN, C. URIBE-ESTRADA, A. VALKAROVA, C. VALLEE, P. VAN MECHELEN, A. VARGAS TREVINO, Y. VAZDIK, M. VAZQUEZ, A. VERBYTSKYI, V. VIAZLO, S. VINOKUROVA, N.N. VLASOV, V. VOLCHINSKI, O. VOLYNETS, M. VON DEN DRIESCH, R. WALCZAK, W.A.T. WAN ABDULLAH, D. WEGENER, J.J. WHITMORE, J. WHYTE, L. WIGGERS, M. WING, CH. WISSING, M. WLASENKO, G. WOLF, H. WOLFE, K. WRONA, E. WUNSCH, A.G. YAGUES-MOLINA, S. YAMADA, Y. YAMAZAKI, R. YOSHIDA, C. YOUNGMAN, J. ZACEK, J. ZALESAK, A.F. ZARNECKI, L. ZAWIEJSKI, O. ZENAIEV, W. ZEUNER, Z. ZHANG, B.O. ZHAUTYKOV, A. ZHOKIN, C. ZHOU, A. ZICHICHI, T. ZIMMERMANN, H. ZOHRABYAN, M. ZOLKO, F. ZOMER, D.S. ZOTKIN, R. ZUS, (ukupan broj autora: 544), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), and Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)

Subjects
Nuclear and High Energy Physics, Particle physics, LOW X, HERA, Lepton-Nucleon Scattering, FOS: Physical sciences, Parton, 01 natural sciences, High Energy Physics - Experiment, Set (abstract data type), DEEP-INELASTIC SCATTERING, PHYSICS, High Energy Physics - Experiment (hep-ex), High Energy Physics, ZEUS Collaboration, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], LOW Q(2), 010306 general physics, PROTON COLLISIONS, DETECTOR, Charged current, E(+)P SCATTERING, Quantum chromodynamics, Physics, ZEUS (particle detector), Lepton-nuclear scattering, 010308 nuclear & particles physics, Scattering, High Energy Physics::Phenomenology, ALPHA(S), F-2 STRUCTURE-FUNCTION, Orders of magnitude (time), EP SCATTERING, Physique des particules élémentaires, High Energy Physics::Experiment, Particle Physics - Experiment
Abstract

A combination is presented of the inclusive deep inelastic cross sections measured by the H1 and ZEUS Collaborations in neutral and charged current unpolarised e ± p scattering at HERA during the period 1994-2000. The data span six orders of magnitude in negative four-momentum-transfer squared, Q 2, and in Bjorken x. The combination method used takes the correlations of systematic uncertainties into account, resulting in an improved accuracy. The combined data are the sole input in a NLO QCD analysis which determines a new set of parton distributions, HERAPDF1.0, with small experimental uncertainties. This set includes an estimate of the model and parametrisation uncertainties of the fit result., Journal of High Energy Physics, 2010 (1), ISSN:1126-6708, ISSN:1029-8479

Published
2010

10. Search for Single Top Quark Production at HERA

Author

Dusan Bruncko, T. Greenshaw, J. Ferencei, T. Ravdandorj, Claus Kleinwort, M. Kraemer, Richard Polifka, V. Chekelian, F. D. Aaron, R. Zus, J. Zálešák, V. Spaskov, B. R. Grell, A. B. Meyer, Roland Horisberger, A. Valkárová, V. Lubimov, F. Tomasz, Judith Katzy, G. Leibenguth, P. E. Reimer, K. Krastev, C. Niebuhr, L. N. Shtarkov, A. Makankine, G. Buschhorn, D. Ozerov, Gabriel Stoicea, J. E. Olsson, D. J. Fischer, W. Bartel, E. Wuensch, Malte Hildebrandt, S. Egli, F. Moreau, I. R. Kenyon, Y. Soloviev, Pavel Murin, Natasa Raicevic, Vincent Boudry, P. Truoel, G. Laštovička-Medin, A. Nikiforov, S. Vinokurova, A. N. Morozov, Laurent Favart, A. Knutsson, P. Kostka, Voica Radescu, R. Placakyte, Christoph Grab, Mila Pandurovic, Ll. Marti, I. Bozovic-Jelisavcic, C. Wissing, M. Herbst, J. Turnau, S. Habib, M. Deak, Ricardo Lopez-Fernandez, Krzysztof Kutak, M. Steder, D. Hoffmann, David M. South, K. Begzsuren, H. U. Martyn, A. Schoening, G. Thompson, A. Falkiewicz, M. Mudrinic, A. Baghdasaryan, A. Dubak, Z. Staykova, A. Rostovtsev, N. Loktionova, T. Kluge, Stephen Maxfield, I. Picuric, C. Pascaud, I. Tsakov, A. D.R. Vargas Trevino, Andrew Mehta, H. Henschel, J.C. Bizot, M. E. Janssen, Y. Vazdik, S. Shushkevich, N. Gogitidze, Zhiqing Zhang, Guenter Eckerlin, T. Preda, K. H. Hiller, R. C. W. Henderson, Laurent Schoeffel, M. Kapichine, M. Nozicka, J. Zacek, K. Mueller, R. Kogler, P.D. Thompson, K. Lipka, Sakar Osman, O. Pejchal, A. W. Jung, A. Eliseev, B. Delcourt, K. Urban, Murrough Landon, D. Wegener, Wolfgang Lange, M. Del Degan, J. Feltesse, G. Herrera, Calin Alexa, Ilias Panagoulias, P. Sopicki, Matthias Ulrich Mozer, J. Gayler, A. Fedotov, L. Goerlich, A. M. Fomenko, Max Klein, Ivan Smiljanic, D. Salek, S. Ghazaryan, J. Bracinik, Fabian Zomer, K. B. Cantun Avila, C. Kiesling, Leif J. Jönsson, Benoit Roland, J. Cvach, A. De Roeck, A. J. Campbell, J. G. Contreras, G. Cozzika, V. Efremenko, Anna Kropivnitskaya, R. Felst, T. J. Sloan, A.S. Belousov, K. Nowak, M. Fleischer, Peter Robmann, P. Van Mechelen, Th D. Papadopoulou, Sergey Rusakov, E. E. Elsen, S. Mikocki, Bogdan Povh, F. Sefkow, T. Zimmermann, K. Daum, C. Schmitz, Hannes Jung, Alexander Zhokin, C. Vallée, Th. Naumann, Emmanuelle Perez, S. Backovic, E. Gabathuler, S. M. Piec, B. Tseepeldorj, Zuzana Rurikova, S. Levonian, Gang Li, V. Cerny, Benno List, E. Hennekemper, I. Milcewicz-Mika, M. Brinkmann, B. Pokorny, Gerhard Brandt, V. Volchinski, V. Lendermann, H. Meyer, Xavier Janssen, T. N. Trinh, J-P. Meyer, L. Bystritskaya, Maxime Gouzevitch, H. Zohrabyan, V. Michels, A. Lebedev, D. Haidt, J. B. Dainton, Eram Rizvi, V. Dodonov, J. V. Morris, Jenny List, A.J. Rahmat, A. Bunyatyan, Marina Rotaru, V. Tchoulakov, R.N. Shaw-West, Dave Sankey, J. Delvax, M. von den Driesch, G. D. Patel, Biljana Antunović, T. Sykora, A. Raspiareza, M. Sauter, Hans-Christian Schultz-Coulon, Tomas Hreus, V. Andreev, Christian Helebrant, B. Olivier, U. Straumann, B. Stella, Stefan Schmitt, Vladimir Palichik, Paul Laycock, E. Malinovski, Emmanuel Sauvan, G. Grindhammer, T. H. Tran, T. Toll, Karel Cerny, John A Coughlan, Pierre Marage, I. Glushkov, D. Sunar, A. Cholewa, A. Glazov, L. Lytkin, Cristinel Diaconu, Daniel Pitzl, D. Traynor, A. Asmone, F. Cassol-Brunner, Jan Kretzschmar, K. Krueger, Andrej Liptaj, M. Jacquet, K. Alimujiang, A. Specka, Paul Richard Newman, Grzegorz Nowak, A. Dossanov, A. Petrukhin, M. Aldaya Martin, V. Brisson, E. Barrelet, J. E. Ruiz Tabasco, E. A. De Wolf, R. Roosen, Y. de Boer, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, H1, Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), H1 Collaboration, and (ukupan broj autora: 249)

Subjects
Physics, Quark, Nuclear and High Energy Physics, Top quark, Particle physics, 010308 nuclear & particles physics, High Energy Physics::Lattice, High Energy Physics::Phenomenology, FOS: Physical sciences, HERA, Omega baryon, 01 natural sciences, Bottom quark, High Energy Physics - Experiment, Sigma baryon, Standard Model, Nuclear physics, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], B meson, High Energy Physics::Experiment, 010306 general physics
Abstract

A search for single top quark production is performed in the full ep data sample collected by the H1 experiment at HERA, corresponding to an integrated luminosity of 474 pb^-1. Decays of top quarks into a b quark and a W boson with subsequent leptonic or hadronic decay of the W are investigated. A multivariate analysis is performed to discriminate top quark production from Standard Model background processes. An upper limit on the top quark production cross section via flavour changing neutral current processes sigma (ep -> etX) < 0.25 pb is established at 95% CL. Limits on the anomalous coupling kappa_{tu gamma} are derived., Revised version with small text changes. 22 pages, 6 figures

Published
2009

11. Measurement of isolated photon production in deep-inelastic scattering at HERA

Author

J. Feltesse, Ilias Panagoulias, Fabian Zomer, Max Klein, S. Habib, Paul Newman, T. Zimmermann, G. Cozzika, Laurent Schoeffel, K. Urban, A. Falkiewicz, Adrian Perieanu, Grzegorz Nowak, M. Sauter, Murrough Landon, A. Petrukhin, I. Sheviakov, C. Schmitz, Hannes Jung, S. Gorbounov, Alexander Zhokin, K. Krüger, Sakar Osman, P. A. Smirnov, G. Weber, U. Straumann, A. Eliseev, O. Behrendt, S. Vinokurova, C. Vallée, P. Kostka, M. Gouzevitch, J. Turnau, J. V. Morris, Gerhard Brandt, K. Begzsuren, Thomas Naumann, I. Tsakov, T. Kluge, V. Andreev, Roland Horisberger, V. Lubimov, V. Volchinski, A. Valkárová, P. Van Mechelen, M. Kapichine, M. Nozicka, J. Zálešák, Jenny List, H. Meyer, T.H. Tran, K. Müller, A.J. Rahmat, A. Bunyatyan, Wolfgang Lange, M. Goettlich, V. Spaskov, L. Finke, Paul Laycock, E. Malinovski, Emmanuel Sauvan, B. Delcourt, I. Picuric, Karel Cerny, C. Risler, A. Dubak, A. B. Meyer, V. Jemanov, Xavier Janssen, Michael R. Wessels, Y.C. Zhu, K. Daum, D. Sunar, P. E. Reimer, J. Gayler, M. Kraemer, G. Grindhammer, J. E. Olsson, Guenter Eckerlin, André Schöning, Christian Helebrant, W. Bartel, A. Makankine, V. Brisson, K. Nankov, L. N. Shtarkov, G. Buschhorn, Richard Polifka, Malte Hildebrandt, D. Ozerov, R. Weber, Ivan Smiljanic, D. Salek, J-P. Meyer, Dirk L. Hoffmann, G. Franke, M. Deak, F. W. Büsser, A. Glazov, F. Eisele, V. Michels, G. Thompson, S. Schmidt, V. Chekelian, F. D. Aaron, B. Tseepeldorj, A. Cholewa, L. Lytkin, Cristinel Diaconu, A. Astvatsatourov, Mila Pandurovic, J. B. Dainton, E. Barrelet, I. R. Kenyon, Natasa Raicevic, A. Nikiforov, V. Korbel, Z. Staykova, Theodora Papadopoulou, Daniel Pitzl, Calin Alexa, A. Aktas, R. Oganezov, D. Traynor, H. Henschel, Vincent Boudry, J.C. Bizot, Judith Katzy, G. Leibenguth, Matthew Beckingham, A. Asmone, Stephen Maxfield, T. N. Trinh, A. N. Morozov, F. Cassol-Brunner, E. A. De Wolf, Anna Kropivnitskaya, J. Stiewe, D. Perez-Astudillo, Ll. Marti, R. Felst, B. Olivier, E. Wünsch, Karlheinz Meier, R. Roosen, I. Bozovic-Jelisavcic, B. R. Grell, J. G. Contreras, Gang Li, A. Mohamed, C. Werner, Andrew Mehta, J. Bracinik, D. Wegener, Y. de Boer, Dave Sankey, N. Gogitidze, Magnus Hansson, M. Jacquet, M. Del Degan, F. Tomasz, Jan Kretzschmar, P. Prideaux, Andrej Liptaj, Katerina Lipka, Pierre Marage, S. Ghazaryan, L. Goerlich, J. Žáček, J. Delvax, A. D.R. Vargas Trevino, V. Tchoulakov, K. Krastev, I. Milcewicz-Mika, I. Glushkov, V. Efremenko, Dusan Bruncko, H. U. Martyn, B. Naroska, G. D. Patel, Hans-Christian Schultz-Coulon, A. W. Jung, T. Frisson, L. Lindfeld, S. Mikocki, C. Wissing, M.-O. Boenig, O. Behnke, Biljana Antunović, T. Greenshaw, Peter Robmann, G. Herrera, R. Wolf, Ricardo Lopez-Fernandez, J. Ferencei, M. Martisikova, M. Steder, T. Ravdandorj, Claus Kleinwort, G. Laštovička-Medin, D.P. Johnson, Tomas Hreus, R. Eichler, T. Sykora, Nicolas Berger, J. Cvach, Pavel Murin, C. Niebuhr, S. Levonian, A. Zhelezov, S. Baudrand, S. Egli, Y. Soloviev, Laurent Favart, K. Nowak, S. Backovic, C. Pascaud, A. Knutsson, A. Lebedev, Zuzana Rurikova, Voica Radescu, Christoph Grab, F. Salvaire, D. Haidt, David M. South, A. De Roeck, A. Baghdasaryan, A. Rostovtsev, Eram Rizvi, G. Heinzelmann, V. Dodonov, M. E. Janssen, D. Utkin, Zhiqing Zhang, Leif J. Jönsson, Benoit Roland, T. Klimkovich, R. Plačakytė, A. M. Fomenko, Georgios Tsipolitis, M. Fleischer, Bogdan Povh, F. Sefkow, P. Baranov, John A Coughlan, B. Stella, Stefan Schmitt, T. J. Sloan, P.J.W. Faulkner, A.S. Belousov, Sergey Rusakov, P. Truöl, Vladimir Palichik, N. Loktionova, A. Hovhannisyan, T. Preda, I. Tsurin, T. Toll, E. E. Elsen, Emmanuelle Perez, S. M. Piec, K. H. Hiller, R. C. W. Henderson, A. Specka, L. Bystritskaya, H. Zohrabyan, P. D. Thompson, V. Yeganov, V. Lendermann, F. Moreau, S. J. Aplin, A.-I. Lucaci-Timoce, S. Essenov, R.N. Shaw-West, V. Cerny, Benno List, M. Brinkmann, H. Peng, Matthias Ulrich Mozer, A. Fedotov, K. B. Cantun Avila, S. Ginzburgskaya, C. Kiesling, E. Tzamariudaki, A. J. Campbell, E. Gabathuler, Y. Vazdik, Stefania Xella, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée (DAPNIA), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), H1, Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), (ukupan broj autora: 289), and H1 Collaboration

Subjects
Particle physics, Photon, Physics and Astronomy (miscellaneous), Astrophysics::High Energy Astrophysical Phenomena, Hadron, FOS: Physical sciences, Elementary particle, Inelastic scattering, 7. Clean energy, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], ddc:530, 010306 general physics, Nuclear Experiment, Engineering (miscellaneous), Physics, Luminosity (scattering theory), 010308 nuclear & particles physics, HERA, Deep inelastic scattering, Pseudorapidity, Physique des particules élémentaires, High Energy Physics::Experiment
Abstract

The production of isolated photons in deep-inelastic scattering ep→eγX is measured with the H1 detector at HERA. The measurement is performed in the kinematic range of negative four-momentum transfer squared 450 GeV. The analysis is based on a total integrated luminosity of 227 pb-1. The production cross section of isolated photons with a transverse energy in the range 3, 0, DESY-07-147 / arxiv:0711.4578, The H1 Collaboration., info:eu-repo/semantics/published

Published
2008

12. Three- and Four-jet Production at Low x at HERA

Author

Dusan Bruncko, B. Naroska, Calin Alexa, A. Makankine, Ivan Smiljanic, D. Salek, G. Buschhorn, D. Ozerov, R. Weber, T. Greenshaw, M. Deak, S. Ghazaryan, J. Ferencei, M. Martisikova, G. Thompson, D. Wegener, J. G. Contreras, A. Mohamed, T. Ravdandorj, G. Leibenguth, Z. Staykova, Claus Kleinwort, P. Prideaux, E. Barrelet, H. Henschel, V. Jemanov, Laurent Schoeffel, Ricardo Lopez-Fernandez, E. A. De Wolf, J.C. Bizot, M. Gouzevitch, M. Steder, J. E. Olsson, W. Bartel, Malte Hildebrandt, V. Efremenko, F. W. Büsser, Adrian Perieanu, Judith Katzy, I. R. Kenyon, I. Sheviakov, Natasa Raicevic, Gang Li, Vincent Boudry, B. R. Grell, A. N. Morozov, D. Perez-Astudillo, Karlheinz Meier, R. Roosen, E. Wünsch, F. Tomasz, Y. de Boer, M. Jacquet, P. D. Thompson, Pavel Murin, V. Yeganov, Dave Sankey, C. Niebuhr, K. Krastev, S. Mikocki, Y. Vazdik, K. Urban, Murrough Landon, L. Lindfeld, M. Kapichine, M. Nozicka, J. Delvax, Stefania Xella, F. Moreau, S. J. Aplin, S. Egli, Paul Laycock, G. D. Patel, E. Malinovski, H. Meyer, Biljana Antunović, Laurent Favart, D.P. Johnson, Gerhard Brandt, V. Volchinski, Roland Horisberger, A. Valkárová, S. Gorbounov, B. Tseepeldorj, F. Eisele, R. Oganezov, P. Baranov, I. Milcewicz-Mika, Emmanuel Sauvan, P. E. Reimer, Xavier Janssen, T. Sykora, Y. Soloviev, C. Wissing, S. Essenov, K. Müller, S. Habib, E. Gabathuler, G. Grindhammer, Matthew Beckingham, J. Zálešák, V. Spaskov, Georgios Tsipolitis, M. Fleischer, B. Delcourt, J. V. Morris, Stephen Maxfield, T. N. Trinh, A. Aktas, Anna Kropivnitskaya, J. Stiewe, Jenny List, A.J. Rahmat, A. Bunyatyan, H. U. Martyn, Matthias Klein, P. Van Mechelen, R. Felst, A. B. Meyer, Andrew Mehta, J. Bracinik, Voica Radescu, B. Olivier, N. Gogitidze, T.H. Tran, M.-O. Boenig, Christoph Grab, M. Kraemer, A. Falkiewicz, Richard Polifka, T. J. Sloan, P.J.W. Faulkner, J. Feltesse, Fabian Zomer, A. Nikiforov, J. Žáček, H. Peng, A. W. Jung, David M. South, A.S. Belousov, S. Schmidt, C. Pascaud, Sergey Rusakov, P. Truöl, Ilias Panagoulias, Bogdan Povh, O. Behrendt, F. Sefkow, A. Lebedev, G. Herrera, L. Finke, F. Salvaire, Nicolas Berger, R. Wolf, S. Vinokurova, K. Krüger, A. Baghdasaryan, A. Rostovtsev, V. Chekelian, F. D. Aaron, Magnus Hansson, D. Haidt, Matthias Ulrich Mozer, M. Del Degan, A. Fedotov, A. De Roeck, P. Kostka, Hans-Christian Schultz-Coulon, V. Lubimov, S. Levonian, Eram Rizvi, A. Zhelezov, G. Heinzelmann, M. Sauter, Ll. Marti, I. Bozovic-Jelisavcic, S. Baudrand, J-P. Meyer, M. E. Janssen, R. Plačakytė, V. Dodonov, Y.C. Zhu, G. Cozzika, K. B. Cantun Avila, J. Cvach, J. Turnau, S. Ginzburgskaya, D. Utkin, L. Goerlich, N. Loktionova, K. Daum, P. A. Smirnov, A. Dubak, A. M. Fomenko, Katerina Lipka, A. Hovhannisyan, K. Begzsuren, K. Nowak, C. Kiesling, T. Preda, E. Tzamariudaki, K. Nankov, L. N. Shtarkov, I. Tsakov, C. Risler, Tomas Hreus, R. Eichler, A. D.R. Vargas Trevino, V. Tchoulakov, I. Tsurin, A. J. Campbell, L. Bystritskaya, Sakar Osman, C. Schmitz, Hannes Jung, Alexander Zhokin, E. E. Elsen, A. Eliseev, T. Kluge, V. Andreev, V. Michels, J. B. Dainton, C. Vallée, H. Zohrabyan, A. Astvatsatourov, I. Picuric, Mila Pandurovic, Emmanuelle Perez, Guenter Eckerlin, André Schöning, Christian Helebrant, S. M. Piec, Dirk L. Hoffmann, G. Franke, John A Coughlan, V. Lendermann, A.-I. Lucaci-Timoce, B. Stella, Stefan Schmitt, R.N. Shaw-West, V. Cerny, Benno List, Vladimir Palichik, M. Brinkmann, T. Toll, Karel Cerny, A. Glazov, Paul Newman, T. Zimmermann, G. Weber, U. Straumann, Thomas Naumann, V. Korbel, C. Werner, Grzegorz Nowak, A. Petrukhin, Daniel Pitzl, T. Frisson, Peter Robmann, S. Backovic, Zuzana Rurikova, Michael R. Wessels, V. Brisson, D. Traynor, A. Asmone, Wolfgang Lange, F. Cassol-Brunner, M. Goettlich, G. Laštovička-Medin, A. Knutsson, J. Gayler, Theodora Papadopoulou, Jan Kretzschmar, Andrej Liptaj, D. Sunar, A. Cholewa, L. Lytkin, Cristinel Diaconu, Pierre Marage, I. Glushkov, O. Behnke, Leif J. Jönsson, Benoit Roland, T. Klimkovich, Zhiqing Zhang, K. H. Hiller, R. C. W. Henderson, A. Specka, H1 Collaboration, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée (DAPNIA), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), H1, Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), and (ukupan broj autora: 289)

Subjects
Physics, Quantum chromodynamics, Particle physics, Luminosity (scattering theory), Physics and Astronomy (miscellaneous), Proton, 010308 nuclear & particles physics, Monte Carlo method, FOS: Physical sciences, Parton, HERA, Jet (particle physics), Deep inelastic scattering, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Physique des particules élémentaires, ddc:530, High Energy Physics::Experiment, 010306 general physics, Engineering (miscellaneous)
Abstract

Three- and four-jet production is measured in deep-inelastic ep scattering at low x and Q2 with the H1 detector using an integrated luminosity of 44.2 pb-1. Several phase space regions are selected for the three-jet analysis in order to study the underlying parton dynamics from global topologies to the more restrictive regions of forward jets close to the proton direction. The measurements of cross sections for events with at least three jets are compared to fixed order QCD predictions of O(αs 2) and O(αs 3) and with Monte Carlo simulation programs where higher order effects are approximated by parton showers. A good overall description is provided by the O(α s 3) calculation. Too few events are predicted at the lowest x ∼ 10-4, especially for topologies with two forward jets. This hints to large contributions at low x from initial state radiation of gluons close to the proton direction and unordered in transverse momentum. The Monte Carlo program in which gluon radiation is generated by the colour dipole model gives a good description of both the three- and the four-jet data in absolute normalisation and shape. © 2008 Springer-Verlag / Società Italiana di Fisica., 0, DESY-07-200 / arxiv:0711.2606, The H1 Collaboration., info:eu-repo/semantics/published

Published
2007

13. Inclusive $D*pm$ meson and associated dijet production in deep-inelastic scattering at HERA

Author

A. Baghdasaryan, A. Rostovtsev, B. R. Grell, F. Eisele, F. Tomasz, S. Ghazaryan, J. Feltesse, A. Lebedev, A. D.R. Vargas Trevino, D. Utkin, R. Oganezov, F. Salvaire, D. Haidt, Pavel Murin, Adrian Perieanu, Stephen Maxfield, Th. D. Papadopoulou, Magnus Hansson, Sakar Osman, A. De Roeck, Max Klein, A. Stoilov, T. J. Sloan, B. Stella, A. Eliseev, J. Stiewe, Eram Rizvi, A. Nikiforov, L. Finke, K. Krastev, G. Heinzelmann, V. Cerny, M. Del Degan, V. Dodonov, C. Niebuhr, Stefan Schmitt, Laurent Favart, B. Olivier, Y.C. Zhu, Andrew Mehta, J. Bracinik, N. Gogitidze, E. Perez, T. Anthonis, S. Egli, L. Lindfeld, M. Sauter, K. Daum, L. Goerlich, Y. Soloviev, P. D. Thompson, S. Levonian, M. Gouzevitch, F. Zomer, G. Knies, B. List, P. Baranov, Gerhard Brandt, P. A. Smirnov, A. W. Jung, Vladimir Palichik, Pierre Marage, Katerina Lipka, V. Yeganov, D. Wegener, P. E. Reimer, O. Behrendt, S. Vinokurova, E. Wünsch, M. Wessels, G. Herrera, V. Andreev, V. Tchoulakov, Paul Laycock, E. Malinovski, Emmanuel Sauvan, V. Volchinski, Leif J. Jönsson, Benoit Roland, P. Kostka, F. Moreau, S. J. Aplin, G. Grindhammer, S. Baudrand, R. Wolf, E. Barrelet, G. Leibenguth, G. D. Patel, P.J.W. Faulkner, Zhen Zhang, A.S. Belousov, Sergey Rusakov, Ricardo Lopez-Fernandez, J. Turnau, T. Klimkovich, C. Wissing, Laurent Schoeffel, V. Efremenko, Biljana Antunović, H. Meyer, D.P. Johnson, P. Truöl, S. Habib, Karel Cerny, E. A. De Wolf, T. Sykora, K. Begzsuren, S. Essenov, T. Toll, Ivan Smiljanic, Ll. Marti, I. Glushkov, I. Bozovic-Jelisavcic, D. Mladenov, K. Urban, Murrough Landon, I. Tsakov, Karlheinz Meier, R. Roosen, Gero Flucke, E. E. Elsen, Christian Helebrant, I. Panagoulias, T. Kluge, M. Steder, S. Mikocki, D. Hoffmann, Andreas Meyer, K. H. Hiller, Xavier Janssen, R. C. W. Henderson, M. Jacquet, V. Jemanov, J. V. Morris, G. Franke, M. Kapichine, M. Nozicka, Y. de Boer, Jenny List, Roland Horisberger, David South, K. Müller, J. Žáček, A.J. Rahmat, A. Bunyatyan, A. Usik, Anton Babaev, A. Valkárová, J. G. Contreras, D. P. C. Sankey, A. Mohamed, John A Coughlan, T. N. Trinh, S. Gorbounov, B. Delcourt, P. Prideaux, A. Specka, Grzegorz Nowak, S. M. Piec, I. Picuric, I. Milcewicz-Mika, A. Glazov, Matthew Beckingham, J. Cvach, M. Goettlich, J. E. Olsson, W. Bartel, Malte Hildebrandt, F. W. Büsser, A. Petrukhin, M.-O. Boenig, O. Behnke, A. Aktas, Anna Kropivnitskaya, C. Pascaud, A. Falkewicz, R. Felst, V. Lubimov, K. Nowak, V. Korbel, I. R. Kenyon, Natasa Raicevic, E. Gabathuler, W. Yan, D. Sunar, Nicolas Berger, Guenter Eckerlin, André Schöning, N. Loktionova, Tomas Hreus, R. Eichler, A. Hovhannisyan, Vincent Boudry, A. N. Morozov, D. Perez-Astudillo, M. Gregori, V. Brisson, J. Zimmermann, P. Van Mechelen, K. Nankov, S. Hussain, A. Zhelezov, I. Tsurin, J-P. Meyer, C. Grab, L. N. Shtarkov, G. Thompson, A. Cholewa, L. Lytkin, Cristinel Diaconu, Daniel Pitzl, H. Henschel, D. Traynor, A. Asmone, J.C. Bizot, F. Cassol-Brunner, C. Werner, G. Cozzika, Jan Kretzschmar, Andrej Liptaj, C. Schmitz, Hannes Jung, Alexander Zhokin, C. Vallée, V. Michels, J. B. Dainton, Paul Newman, A. Dubak, M. Fleischer, T. Zimmermann, Y. Vazdik, Bogdan Povh, F. Sefkow, G. Tsipolitis, G. Weber, U. Straumann, R. Plačakytė, Thomas Naumann, Erika Garutti, A. M. Fomenko, Stefania Xella, H-C. Schultz-Coulon, H. Peng, Matthias Ulrich Mozer, A. Fedotov, K. B. Cantun Avila, M. Kraemer, S. Ginzburgskaya, S. Schmidt, C. Kiesling, V. Chekelian, E. Tzamariudaki, A. J. Campbell, I. Sheviakov, J. Zálešák, V. Spaskov, K. Wacker, Dusan Bruncko, B. Naroska, T. Greenshaw, J. Ferencei, M. Martisikova, Claus Kleinwort, Peter Robmann, S. Backovic, C. Risler, Zuzana Rurikova, G. Laštovička-Medin, A. Rimmer, H. Lueders, A. Knutsson, A. Astvatsatourov, Mila Pandurovic, A. Makankine, G. Buschhorn, D. Ozerov, R. Weber, H. U. Martyn, K. Krüger, T. Frisson, Wolfgang Lange, J. Gayler, Judith Katzy, L. Bystritskaya, H. Zohrabyan, R.N. Shaw-West, M. Brinkmann, V. Lendermann, A.-I. Lucaci-Timoce, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée (DAPNIA), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), H1, Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), and (ukupan broj autora: 288)

Subjects
Quantum chromodynamics, Physics, Particle physics, Physics and Astronomy (miscellaneous), Meson, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Parton, HERA, Jet (particle physics), Deep inelastic scattering, 01 natural sciences, 7. Clean energy, Nuclear physics, DGLAP, 0103 physical sciences, D meson, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, 010306 general physics, Nuclear Experiment, Engineering (miscellaneous)
Abstract

Inclusive D*(+/-) production is measured in deep-inelastic ep scattering at HERA with the H1 detector. In addition, the production of dijets in events with a D*(+/-) meson is investigated. The analysis covers values of photon virtuality 2 LT = Q(2) LT = 100 GeV2 and of inelasticity 0.05 LT = y LT = 0.7. Differential cross sections are measured as a function of Q(2) and x and of various D*(+/-) meson and jet observables. Within the experimental and theoretical uncertainties all measured cross sections are found to be adequately described by next-to-leading order (NLO) QCD calculations, based on the photon - gluon fusion process and DGLAP evolution, without the need for an additional resolved component of the photon beyond what is included at NLO. A reasonable description of the data is also achieved by a prediction based on the CCFM evolution of partons involving the kT- unintegrated gluon distribution of the proton.

Published
2007

14. Charged particle production in high Q(2) deep-inelastic scattering at HERA

Author

F.D. Aaron, A. Aktas, C. Alexa, V. Andreev, B. Antunovic, S. Aplin, A. Asmone, A. Astvatsatourov, S. Backovic, A. Baghdasaryan, P. Baranov, E. Barrelet, W. Bartel, S. Baudrand, M. Beckingham, K. Begzsuren, O. Behnke, O. Behrendt, A. Belousov, N. Berger, J.C. Bizot, M.-O. Boenig, V. Boudry, I. Bozovic-Jelisavcic, J. Bracinik, G. Brandt, M. Brinkmann, V. Brisson, D. Bruncko, F.W. Büsser, A. Bunyatyan, G. Buschhorn, L. Bystritskaya, A.J. Campbell, K.B. Cantun Avila, F. Cassol-Brunner, K. Cerny, V. Cerny, V. Chekelian, A. Cholewa, J.G. Contreras, J.A. Coughlan, G. Cozzika, J. Cvach, J.B. Dainton, K. Daum, M. Deak, Y. de Boer, B. Delcourt, M. Del Degan, J. Delvax, A. De Roeck, E.A. De Wolf, C. Diaconu, V. Dodonov, A. Dubak, G. Eckerlin, V. Efremenko, S. Egli, R. Eichler, F. Eisele, A. Eliseev, E. Elsen, S. Essenov, A. Falkiewicz, P.J.W. Faulkner, L. Favart, A. Fedotov, R. Felst, J. Feltesse, J. Ferencei, L. Finke, M. Fleischer, A. Fomenko, G. Franke, T. Frisson, E. Gabathuler, J. Gayler, S. Ghazaryan, S. Ginzburgskaya, A. Glazov, I. Glushkov, L. Goerlich, M. Goettlich, N. Gogitidze, S. Gorbounov, M. Gouzevitch, C. Grab, T. Greenshaw, M. Gregori, B.R. Grell, G. Grindhammer, S. Habib, D. Haidt, M. Hansson, G. Heinzelmann, C. Helebrant, R.C.W. Henderson, H. Henschel, G. Herrera, M. Hildebrandt, K.H. Hiller, D. Hoffmann, R. Horisberger, A. Hovhannisyan, T. Hreus, M. Jacquet, M.E. Janssen, X. Janssen, V. Jemanov, L. Jönsson, D.P. Johnson, A.W. Jung, H. Jung, M. Kapichine, J. Katzy, I.R. Kenyon, C. Kiesling, M. Klein, C. Kleinwort, T. Klimkovich, T. Kluge, A. Knutsson, V. Korbel, P. Kostka, M. Kraemer, K. Krastev, J. Kretzschmar, A. Kropivnitskaya, K. Krüger, M.P.J. Landon, W. Lange, G. Laštovička-Medin, P. Laycock, A. Lebedev, G. Leibenguth, V. Lendermann, S. Levonian, G. Li, L. Lindfeld, K. Lipka, A. Liptaj, B. List, J. List, N. Loktionova, R. Lopez-Fernandez, V. Lubimov, A.-I. Lucaci-Timoce, L. Lytkin, A. Makankine, E. Malinovski, P. Marage, Ll. Marti, M. Martisikova, H.-U. Martyn, S.J. Maxfield, A. Mehta, K. Meier, A.B. Meyer, H. Meyer, J. Meyer, V. Michels, S. Mikocki, I. Milcewicz-Mika, A. Mohamed, F. Moreau, A. Morozov, J.V. Morris, M.U. Mozer, K. Müller, P. Murín, K. Nankov, B. Naroska, Th. Naumann, P.R. Newman, C. Niebuhr, A. Nikiforov, G. Nowak, K. Nowak, M. Nozicka, R. Oganezov, B. Olivier, J.E. Olsson, S. Osman, D. Ozerov, V. Palichik, I. Panagoulias, M. Pandurovic, Th. Papadopoulou, C. Pascaud, G.D. Patel, H. Peng, E. Perez, D. Perez-Astudillo, A. Perieanu, A. Petrukhin, I. Picuric, S. Piec, D. Pitzl, R. Plačakytė, R. Polifka, B. Povh, T. Preda, P. Prideaux, V. Radescu, A.J. Rahmat, N. Raicevic, T. Ravdandorj, P. Reimer, C. Risler, E. Rizvi, P. Robmann, B. Roland, R. Roosen, A. Rostovtsev, Z. Rurikova, S. Rusakov, D. Salek, F. Salvaire, D.P.C. Sankey, M. Sauter, E. Sauvan, S. Schmidt, S. Schmitt, C. Schmitz, L. Schoeffel, A. Schöning, H.-C. Schultz-Coulon, F. Sefkow, R.N. Shaw-West, I. Sheviakov, L.N. Shtarkov, T. Sloan, I. Smiljanic, P. Smirnov, Y. Soloviev, D. South, V. Spaskov, A. Specka, Z. Staykova, M. Steder, B. Stella, J. Stiewe, U. Straumann, D. Sunar, T. Sykora, V. Tchoulakov, G. Thompson, P.D. Thompson, T. Toll, F. Tomasz, T.H. Tran, D. Traynor, T.N. Trinh, P. Truöl, I. Tsakov, B. Tseepeldorj, G. Tsipolitis, I. Tsurin, J. Turnau, E. Tzamariudaki, K. Urban, D. Utkin, A. Valkárová, C. Vallée, P. Van Mechelen, A. Vargas Trevino, Y. Vazdik, S. Vinokurova, V. Volchinski, G. Weber, R. Weber, D. Wegener, C. Werner, M. Wessels, Ch. Wissing, R. Wolf, E. Wünsch, S. Xella, V. Yeganov, J. Žáček, J. Zálešák, Z. Zhang, A. Zhelezov, A. Zhokin, Y.C. Zhu, T. Zimmermann, H. Zohrabyan, F. Zomer, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée (DAPNIA), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), H1, Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and (ukupan broj autora: 290)

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Annihilation, 010308 nuclear & particles physics, Electron–positron annihilation, Perturbative QCD, FOS: Physical sciences, Elementary particle, HERA, Inelastic scattering, Deep inelastic scattering, 7. Clean energy, 01 natural sciences, Charged particle, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], ddc:530, High Energy Physics::Experiment, 010306 general physics
Abstract

The average charged track multiplicity and the normalised distribution of the scaled momentum, $\xp$, of charged final state hadrons are measured in deep-inelastic $\ep$ scattering at high $Q^2$ in the Breit frame of reference. The analysis covers the range of photon virtuality $100 < Q^2 < 20 000 \GeV^{2}$. Compared with previous results presented by HERA experiments this analysis has a significantly higher statistical precision and extends the phase space to higher $Q^{2}$ and to the full range of $\xp$. The results are compared with $e^+e^-$ annihilation data and with various calculations based on perturbative QCD using different models of the hadronisation process., 20 pages, 5 figures

Published
2007

15. Search for baryonic resonances decaying to <tex>\Xi \pi$</tex> in deep-inelastic scattering at HERA

Author

O. Behrendt, S. Vinokurova, Ivan Smiljanic, F. Zomer, Stephen Maxfield, P. Kostka, J. Stiewe, J. Turnau, Paul Newman, T. Zimmermann, Andrew Mehta, J. Bracinik, C. Niebuhr, V. Andreev, N. Gogitidze, J. G. Contreras, T. Kluge, J. Delvax, K. Begzsuren, A. Mohamed, P. Prideaux, V. Lendermann, A. W. Jung, S. Egli, G. Weber, U. Straumann, P. D. Thompson, Grzegorz Nowak, A. Petrukhin, Michael R. Wessels, V. Brisson, I. Tsakov, G. Herrera, R. Wolf, I. Sheviakov, J. E. Olsson, W. Bartel, Malte Hildebrandt, I. Picuric, C. Pascaud, V. Yeganov, Daniel Pitzl, Paul Laycock, E. Malinovski, Emmanuel Sauvan, D. Traynor, A. Asmone, Christian Helebrant, Leif J. Jönsson, Benoit Roland, G. Franke, G. Leibenguth, Guenter Eckerlin, André Schöning, P. Baranov, Pavel Murin, A.-I. Lucaci-Timoce, F. Moreau, S. J. Aplin, E. Barrelet, E. A. De Wolf, Laurent Schoeffel, Karlheinz Meier, R. Roosen, Y. Soloviev, Y. de Boer, G. Grindhammer, Matthew Beckingham, V. Lubimov, F. W. Büsser, F. Cassol-Brunner, T. Klimkovich, Th. D. Papadopoulou, Roland Horisberger, A. Valkárová, M. Jacquet, J. Cvach, R.N. Shaw-West, T. Frisson, C. Wissing, J. V. Morris, M. Deak, Karel Cerny, F. Eisele, H. Peng, Benno List, K. Urban, Murrough Landon, Jenny List, A.J. Rahmat, A. Bunyatyan, H. U. Martyn, I. R. Kenyon, V. Spaskov, Wolfgang Lange, R. Oganezov, I. Milcewicz-Mika, Laurent Favart, Natasa Raicevic, Vincent Boudry, P. E. Reimer, Katerina Lipka, A. Glazov, V. Cerny, B. Olivier, T. Anthonis, A. N. Morozov, J. Gayler, P.J.W. Faulkner, A.S. Belousov, Sergey Rusakov, P. Truöl, S. Essenov, M. Brinkmann, S. Gorbounov, J. Feltesse, D. Wegener, W. Yan, G. Thompson, D. Perez-Astudillo, Z. Staykova, K. Nankov, A. B. Meyer, Matthias Ulrich Mozer, V. Korbel, E. E. Elsen, K. H. Hiller, R. C. W. Henderson, V. Tchoulakov, Anna Kropivnitskaya, R. Felst, Max Klein, A. Fedotov, L. N. Shtarkov, M. Kraemer, Adrian Perieanu, Jan Kretzschmar, A. Falkiewicz, K. B. Cantun Avila, H. Henschel, Christoph Grab, V. Radescu, Hans-Christian Schultz-Coulon, S. Ginzburgskaya, M. Sauter, A. Lebedev, J.C. Bizot, C. Kiesling, Sakar Osman, A. Eliseev, S. Baudrand, Emmanuelle Perez, Andrej Liptaj, P. A. Smirnov, F. Salvaire, V. Efremenko, Zhen Zhang, S. Schmidt, A. De Roeck, Peter Robmann, Ricardo Lopez-Fernandez, E. Tzamariudaki, A. J. Campbell, Tomas Hreus, R. Eichler, A. Specka, D. Haidt, J. Záleák, P. Van Mechelen, V. Chekelian, S. M. Piec, T. Toll, Gerhard Brandt, G. Cozzika, I. Panagoulias, M. Steder, D. Hoffmann, L. Bystritskaya, D. Sunar, T. J. Sloan, S. Mikocki, V. Volchinski, Eram Rizvi, Magnus Hansson, M. Del Degan, David M. South, Judith Katzy, C. Werner, Calin Alexa, G. Heinzelmann, L. Finke, V. Dodonov, S. Backovic, Th. Naumann, H. Zohrabyan, A. Baghdasaryan, A. Rostovtsev, Ll. Marti, C. Schmitz, Zuzana Rurikova, Hannes Jung, Alexander Zhokin, H. Meyer, I. Bozovic-Jelisavcic, Y.C. Zhu, R. Plaakyt, C. Vallée, V. Michels, J. B. Dainton, L. Goerlich, S. Levonian, S. Ghazaryan, E. Gabathuler, N. Loktionova, K. Daum, Dusan Bruncko, A. Cholewa, M. E. Janssen, B. Naroska, A. Hovhannisyan, Xavier Janssen, E. Wünsch, D. Utkin, B. R. Grell, C. Risler, L. Lytkin, T. Preda, Dave Sankey, M. Goettlich, Cristinel Diaconu, T. Greenshaw, I. Tsurin, V. Jemanov, F. Tomasz, G. Latovika-Medin, B. Stella, J. Ferencei, M. Martisikova, Pierre Marage, G. D. Patel, T. Ravdandorj, A. Knutsson, A. Astvatsatourov, Mila Pandurovic, M. Kapichine, M. Nozicka, Biljana Antunović, Claus Kleinwort, T. N. Trinh, S. Habib, J. Zácek, B. Tseepeldorj, Stefan Schmitt, I. Glushkov, D.P. Johnson, T. Sykora, A. D.R. Vargas Trevino, Richard Polifka, M. Gouzevitch, J-P. Meyer, A. Dubak, A. Nikiforov, A. Aktas, B. Delcourt, O. Behnke, K. Krastev, K. Krüger, L. Lindfeld, A. Makankine, G. Buschhorn, D. Ozerov, R. Weber, Vladimir Palichik, John A Coughlan, M.-O. Boenig, K. Nowak, G. Tsipolitis, A. M. Fomenko, M. Fleischer, Nicolas Berger, K. Müller, Bogdan Povh, F. Sefkow, A. Zhelezov, Y. Vazdik, Stefania Xella, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée (DAPNIA), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), H1, Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), and (ukupan broj autora: 286)

Subjects
Physics, Range (particle radiation), Antiparticle, Particle physics, Photon, Physics and Astronomy (miscellaneous), 010308 nuclear & particles physics, Nuclear Theory, FOS: Physical sciences, HERA, Deep inelastic scattering, 01 natural sciences, Pentaquark, High Energy Physics - Experiment, Nuclear physics, Baryon, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], ddc:530, Production (computer science), High Energy Physics::Experiment, 010306 general physics, Nuclear Experiment, Engineering (miscellaneous)
Abstract

A search for narrow baryonic resonances decaying into Xi- pi- or Xi- pi+ and their antiparticles is carried out with the H1 detector using deep inelastic scattering events at HERA in the range of negative photon four-momentum transfer squared 2 < Q^2 < 100 GeV^2. No signal is observed for a new baryonic state in the mass range 1600 - 2300 MeV in either the doubly charged or the neutral decay channels. The known baryon Xi0 is observed through its decay mode into Xi- pi+. Upper limits are given on the ratio of the production rates of new baryonic states, such as the hypothetical pentaquark states Xi^{--}_{5q} or Xi^{0}_{5q}, relative to the Xi0 baryon state., 15 pages, 4 figures

Published
2007

16. Search for lepton flavour violation in ep collisions at HERA

Author

S. Levonian, Laurent Schoeffel, K. Urban, Murrough Landon, Judith Katzy, S. Habib, Zhen Zhang, S. Gorbounov, Ricardo Lopez-Fernandez, Adrian Perieanu, F. Eisele, Sakar Osman, R. Oganezov, B. Tseepeldorj, Gerhard Brandt, P. Van Mechelen, V. Volchinski, H. Meyer, E. Barrelet, A. Eliseev, Xavier Janssen, K. Müller, I. Panagoulias, M. Steder, D. Hoffmann, Andreas Meyer, A. Usik, V. Cerny, B. Olivier, P. D. Thompson, V. Yeganov, F. Moreau, S. J. Aplin, E. A. De Wolf, Karlheinz Meier, R. Roosen, R.N. Shaw-West, J. E. Olsson, W. Bartel, M. Brinkmann, T. N. Trinh, L. Finke, Y.C. Zhu, J. V. Morris, Jenny List, Stephen Maxfield, M.-O. Boenig, M. Goettlich, F. Zomer, H. U. Martyn, Y. de Boer, S. Hussain, C. Grab, K. Daum, G. Thompson, Malte Hildebrandt, F. W. Büsser, S. Essenov, G. Leibenguth, B. List, V. Andreev, A.J. Rahmat, A. Bunyatyan, I. R. Kenyon, Daniel Pitzl, Natasa Raicevic, Nicolas Berger, G. Knies, Vincent Boudry, Grzegorz Nowak, I. Sheviakov, Katerina Lipka, V. Tchoulakov, V. Lubimov, J. Zimmermann, D. Traynor, A. Asmone, A. D.R. Vargas Trevino, H. Henschel, J. Stiewe, J.C. Bizot, Andrew Mehta, J. Bracinik, K. H. Hiller, Roland Horisberger, N. Gogitidze, A. Valkárová, R. C. W. Henderson, A. N. Morozov, A. Makankine, D. Perez-Astudillo, M. Gregori, Christian Helebrant, A. Petrukhin, K. Krüger, Pavel Murin, M. Jacquet, A. Zhelezov, J-P. Meyer, Paul Laycock, E. Malinovski, Th. D. Papadopoulou, G. Buschhorn, B. R. Grell, David M. South, Matthew Beckingham, F. Cassol-Brunner, T. Frisson, F. Tomasz, D. Ozerov, G. Franke, D. Wegener, C. Risler, R. Weber, J. Žáček, Emmanuel Sauvan, Anna Kropivnitskaya, R. Felst, J. Zálešák, M. Kapichine, M. Nozicka, I. Milcewicz-Mika, K. Nankov, E. Wünsch, Dave Sankey, A. Specka, E. Perez, Wolfgang Lange, Hans-Christian Schultz-Coulon, V. Spaskov, G. Grindhammer, V. Jemanov, L. N. Shtarkov, B. Delcourt, J. Gayler, O. Behrendt, S. Vinokurova, K. Wacker, V. Efremenko, A. Baghdasaryan, G. D. Patel, K. Krastev, Jan Kretzschmar, A. W. Jung, Andrej Liptaj, V. Brisson, Laurent Favart, P. E. Reimer, A. Astvatsatourov, P. Kostka, M. Fleischer, Leif J. Jönsson, E. Gabathuler, A. Rostovtsev, Benoit Roland, S. Mikocki, A. Falkewicz, Mila Pandurovic, J. Turnau, Biljana Antunović, L. Lindfeld, D. Mladenov, Pierre Marage, D.P. Johnson, Dusan Bruncko, T. Sykora, Tomas Hreus, R. Eichler, Magnus Hansson, S. Baudrand, M. Wessels, T. Klimkovich, G. Herrera, R. Wolf, B. Naroska, M. Del Degan, K. Begzsuren, M. E. Janssen, Peter Robmann, T. Toll, T. Anthonis, I. Glushkov, I. Tsakov, A. Aktas, T. Greenshaw, V. Michels, G. Cozzika, J. B. Dainton, D. Utkin, C. Niebuhr, O. Behnke, L. Goerlich, Ll. Marti, J. Ferencei, M. Martisikova, J. Feltesse, A. Lebedev, I. Bozovic-Jelisavcic, T. Ravdandorj, S. Egli, S. Backovic, C. Schmitz, Hannes Jung, D. Sunar, F. Salvaire, Claus Kleinwort, D. Haidt, Bogdan Povh, F. Sefkow, M. Kraemer, Max Klein, Alexander Zhokin, G. Laštovička-Medin, Zuzana Rurikova, Y. Soloviev, H. Lueders, J. Cvach, H. Peng, C. Vallée, S. Schmidt, M. Sauter, V. Chekelian, T. J. Sloan, Eram Rizvi, A. Rimmer, John A Coughlan, A. Cholewa, P. A. Smirnov, L. Lytkin, K. Nowak, Matthias Ulrich Mozer, Cristinel Diaconu, G. Heinzelmann, A. Knutsson, T. Kluge, V. Dodonov, A. Fedotov, B. Stella, A. Nikiforov, Stefan Schmitt, K. B. Cantun Avila, S. Ginzburgskaya, I. Picuric, C. Pascaud, C. Kiesling, Vladimir Palichik, A. De Roeck, E. Tzamariudaki, A. J. Campbell, Guenter Eckerlin, André Schöning, G. Tsipolitis, A. Dubak, R. Plačakytė, Y. Vazdik, A. M. Fomenko, Stefania Xella, Ivan Smiljanic, Anton Babaev, J. G. Contreras, A. Mohamed, P. Prideaux, L. Bystritskaya, H. Zohrabyan, V. Lendermann, A.-I. Lucaci-Timoce, C. Wissing, V. Korbel, Calin Alexa, S. Ghazaryan, M. Gouzevitch, C. Werner, Paul Newman, T. Zimmermann, G. Weber, U. Straumann, Thomas Naumann, Erika Garutti, Karel Cerny, A. Glazov, W. Yan, N. Loktionova, A. Hovhannisyan, T. Preda, I. Tsurin, P. Baranov, P.J.W. Faulkner, A.S. Belousov, Sergey Rusakov, P. Truöl, E. E. Elsen, S. M. Piec, (ukupan broj autora: 293), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée (DAPNIA), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), H1, Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), and Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)

Subjects
Physics, Particle physics, Muon, Luminosity (scattering theory), Physics and Astronomy (miscellaneous), 010308 nuclear & particles physics, Hadron, Flavour, High Energy Physics::Phenomenology, FOS: Physical sciences, HERA, Jet (particle physics), Lambda, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], ddc:530, High Energy Physics::Experiment, 010306 general physics, Nuclear Experiment, Engineering (miscellaneous), Lepton
Abstract

A search for the lepton flavour violating processes ep→μX and ep→τX is performed with the H1 experiment at HERA. Final states with a muon or tau and a hadronic jet are searched for in a data sample corresponding to an integrated luminosity of 66.5 pb-1 for e+p collisions and 13.7 pb-1 for e-p collisions at a centre-of-mass energy of 319 GeV. No evidence for lepton flavour violation is found. Limits are derived on the mass and the couplings of leptoquarks inducing lepton flavour violation in an extension of the Buchmüller–Rückl–Wyler effective model. Leptoquarks produced in ep collisions with a coupling strength of λ=0.3 and decaying with the same coupling strength to a muon–quark pair or a tau–quark pair are excluded at 95% confidence level up to masses of 459 GeV and 379 GeV, respectively., The European Physical Journal C, 52 (4), ISSN:1434-6044, ISSN:1434-6052

Published
2007

17. Tests of QCD Factorisation in the Diffractive Production of Dijets in Deep-Inelastic Scattering and Photoproduction at HERA

Author

C. Wissing, Matthew Beckingham, W. Yan, Anna Kropivnitskaya, R. Felst, N. Loktionova, A. Hovhannisyan, K. Lipka, A. Dubak, I. Tsurin, Daniel Pitzl, D. Wegener, Paul Newman, T. Zimmermann, Y. Vazdik, B. Stella, Magnus Hansson, M. Del Degan, Zhen Zhang, Ricardo Lopez-Fernandez, O. Behrendt, Stefania Xella, L. Goerlich, G. Laštovička-Medin, V. Jemanov, D. Traynor, A. Asmone, F. Cassol-Brunner, F. Zomer, I. Panagoulias, M. Steder, D. Hoffmann, S. Vinokurova, Adrian Perieanu, Stefan Schmitt, Andreas Meyer, A. Usik, P. Kostka, H. Peng, V. Lendermann, Gerhard Brandt, V. Volchinski, J. Turnau, A. Rimmer, S. Levonian, G. Weber, U. Straumann, K. H. Hiller, P. Baranov, V. Efremenko, Matthias Ulrich Mozer, R. C. W. Henderson, A. Stoilov, Thomas Naumann, A. Fedotov, A.-I. Lucaci-Timoce, Jan Kretzschmar, H. Meyer, A. Knutsson, C. Risler, Paul Laycock, K. Krüger, E. Malinovski, Emmanuel Sauvan, K. Begzsuren, B. R. Grell, K. B. Cantun Avila, S. Ginzburgskaya, C. Kiesling, Erika Garutti, A. Nikiforov, T. Frisson, Christian Helebrant, Andrej Liptaj, R.N. Shaw-West, V. Korbel, Xavier Janssen, D. Sunar, I. Tsakov, S. Mikocki, Vladimir Palichik, G. Grindhammer, A. De Roeck, A. D.R. Vargas Trevino, E. Tzamariudaki, A. J. Campbell, A. Aktas, F. Tomasz, G. Franke, Laurent Schoeffel, J. V. Morris, Ivan Smiljanic, K. Nowak, P.J.W. Faulkner, A.S. Belousov, Sergey Rusakov, P. Truöl, S. Habib, T. N. Trinh, Wolfgang Lange, Jenny List, Gero Flucke, Sakar Osman, J. Gayler, M.-O. Boenig, A. Cholewa, M. Brinkmann, D. Mladenov, S. Ghazaryan, J. Žáček, M. Kapichine, Leif J. Jönsson, Benoit Roland, M. Nozicka, K. Krastev, K. Urban, C. Werner, Murrough Landon, A. Eliseev, L. Lytkin, Cristinel Diaconu, E. E. Elsen, A. Astvatsatourov, Mila Pandurovic, A. Specka, E. Barrelet, T. Toll, E. Gabathuler, B. List, Anton Babaev, V. Lubimov, S. Gorbounov, J. G. Contreras, A. Makankine, G. Buschhorn, Y. Soloviev, Pierre Marage, P. E. Reimer, V. Andreev, M. Gouzevitch, V. Tchoulakov, Peter Robmann, D. Ozerov, R. Weber, A. Mohamed, H. U. Martyn, K. Müller, Nicolas Berger, A.J. Rahmat, A. Bunyatyan, M. Goettlich, Stephen Maxfield, J. Zimmermann, J. Stiewe, L. Lindfeld, J. E. Olsson, W. Bartel, Malte Hildebrandt, Roland Horisberger, A. Valkárová, B. Delcourt, I. Glushkov, Andrew Mehta, J. Bracinik, Hans-Christian Schultz-Coulon, A. Zhelezov, S. Baudrand, A. Falkewicz, P. Prideaux, N. Gogitidze, M. Fleischer, Tomas Hreus, R. Eichler, Karel Cerny, S. Schätzel, E. A. De Wolf, Karlheinz Meier, R. Roosen, F. W. Büsser, K. Nankov, P. Van Mechelen, L. Finke, J-P. Meyer, O. Behnke, Emmanuelle Perez, A. W. Jung, L. N. Shtarkov, Y.C. Zhu, Ll. Marti, K. Daum, I. R. Kenyon, M. Wessels, S. Backovic, I. Bozovic-Jelisavcic, John A Coughlan, Y. de Boer, A. Glazov, G. Herrera, R. Wolf, Natasa Raicevic, V. Michels, P. D. Thompson, Zuzana Rurikova, H. Lueders, L. Bystritskaya, V. Yeganov, G. Knies, Bogdan Povh, Judith Katzy, F. Eisele, F. Moreau, S. J. Aplin, J. B. Dainton, S. M. Piec, A. N. Morozov, E. Wünsch, R. Oganezov, S. Essenov, H. Zohrabyan, D. Perez-Astudillo, M. Gregori, Grzegorz Nowak, T. Kluge, Dave Sankey, V. Cerny, B. Olivier, J. Feltesse, G. Cozzika, A. Petrukhin, I. Picuric, C. Pascaud, G. D. Patel, Guenter Eckerlin, André Schöning, Biljana Antunović, V. Boudry, D.P. Johnson, T. Sykora, Max Klein, Pavel Murin, Th. D. Papadopoulou, M. Sauter, C. Schmitz, Hannes Jung, Alexander Zhokin, G. Tsipolitis, R. Plačakytė, C. Vallée, A. Lebedev, P. A. Smirnov, A. M. Fomenko, F. Sefkow, F. Salvaire, D. Haidt, G. Leibenguth, T. J. Sloan, V. Brisson, S. Hussain, C. Grab, Laurent Favart, M. Jacquet, G. Thompson, T. Anthonis, I. Milcewicz-Mika, H. Henschel, J.C. Bizot, T. Klimkovich, C. Niebuhr, S. Egli, David M. South, A. Baghdasaryan, A. Rostovtsev, D. Utkin, M. Kraemer, S. Schmidt, V. Chekelian, Eram Rizvi, G. Heinzelmann, V. Dodonov, I. Sheviakov, J. Cvach, J. Zálešák, V. Spaskov, K. Wacker, Dusan Bruncko, B. Naroska, T. Greenshaw, J. Ferencei, M. Martisikova, Claus Kleinwort, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée (DAPNIA), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), H1, Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), H1 Collaboration, and (ukupan broj autora: 291)

Subjects
Particle physics, Physics and Astronomy (miscellaneous), Proton, FOS: Physical sciences, Parton, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], ddc:530, Rapidity, Nuclear Experiment, 010306 general physics, Engineering (miscellaneous), Quantum chromodynamics, Physics, 010308 nuclear & particles physics, Scattering, High Energy Physics::Phenomenology, HERA, Deep inelastic scattering, 3. Good health, Gluon, High Energy Physics::Experiment
Abstract

Measurements are presented of differential dijet cross sections in diffractive photoproduction (Q^2 e X Y, in which the system X, containing at least two jets, is separated from a leading low-mass proton remnant system Y by a large rapidity gap. The dijet cross sections are compared with NLO QCD predictions based on diffractive parton densities previously obtained from a QCD analysis of inclusive diffractive DIS cross sections by H1. In DIS, the dijet data are well described, supporting the validity of QCD factorisation. The diffractive DIS dijet data are more sensitive to the diffractive gluon density at high fractional parton momentum than the measurements of inclusive diffractive DIS. In photoproduction, the predicted dijet cross section has to be multiplied by a factor of approximately 0.5 for both direct and resolved photon interactions to describe the measurements. The ratio of measured dijet cross section to NLO prediction in photoproduction is a factor 0.5+-0.1 smaller than the same ratio in DIS. This suppression is the first clear observation of QCD hard scattering factorisation breaking at HERA. The measurements are also compared to the two soft colour neutralisation models SCI and GAL. The SCI model describes diffractive dijet production in DIS but not in photoproduction. The GAL model fails in both kinematic regions., Comment: 35 pages, 12 figures

Published
2007

18. First Measurement of Charged Current Cross Sections at HERA with Longitudinally Polarised Positrons

Author

C. Risler, Daniel Pitzl, D. Traynor, Wolfram Erdmann, B. List, L. Finke, A. Asmone, J. Zimmermann, S. Ghazaryan, Y.C. Zhu, C. Wissing, D. Lüke, Thorsten Lux, L. Janauschek, F. Cassol-Brunner, H. Peng, E. Wünsch, T. Kluge, Katerina Lipka, V. Tchoulakov, R.N. Shaw-West, Dave Sankey, A. Nikiforov, C. Gwilliam, A. Astvatsatourov, K. Daum, G. Knies, J. Feltesse, Ilias Panagoulias, Matthias Ulrich Mozer, A. Fedotov, L. Hajduk, T. Laštovička, E. Barrelet, Z. Rurikova, Max Klein, Zhen Zhang, E. A. De Wolf, Ch. Berger, L. Bystritskaya, S. Baumgartner, I. Foresti, G. Cozzika, G. D. Patel, Biljana Antunović, D.P. Johnson, Ricardo Lopez-Fernandez, C. Pascaud, Guenter Eckerlin, N. Malden, Pavel Murin, M. Ibbotson, M. Urban, S. Ginzburgskaya, C. Kiesling, A. De Roeck, E. Tzamariudaki, A. J. Campbell, Karlheinz Meier, R. Roosen, V. Lubimov, M. Goettlich, H. Zohrabyan, Laurent Favart, T. Anthonis, V. Chekelian, H. U. Martyn, Paul Laycock, M. Steder, C. Schmitz, M. Ismail, David Milstead, E. Malinovski, R. Marshall, Jan Kretzschmar, Andrej Liptaj, Laurent Schoeffel, Hannes Jung, G. Tsipolitis, J. V. Morris, Alexander Zhokin, Jenny List, C. Wigmore, Emmanuel Sauvan, G. Grindhammer, J. Becker, C. Vallée, D. Hoffmann, B. Reisert, D. Sunar, A.J. Rahmat, A. Bunyatyan, V. Jemanov, K. Urban, D. Meer, Murrough Landon, K. Nankov, L. N. Shtarkov, A. D.R. Vargas Trevino, A. Makankine, A. Usik, Leif J. Jönsson, Benoit Roland, G. Buschhorn, D. Ozerov, S. Gorbounov, A. M. Fomenko, Y. de Boer, I. Sheviakov, S. Hussain, V. Yeganov, D. Wegener, A. Dubak, T. Frisson, I. Strauch, G. Thompson, B. R. Grell, Søren Schmidt, D. Mladenov, P. A. Smirnov, C. Gerlich, R. Weber, Philipp Fleischmann, F. Moreau, S. J. Aplin, Paul Richard Newman, Grzegorz Nowak, A. Lebedev, F. Salvaire, D. Haidt, L. Lytkin, T. Klimkovich, R. Plačakytė, P. Van Mechelen, Y. Vazdik, P.D. Thompson, F. Tomasz, Judith Katzy, H. Henschel, J.C. Bizot, Cristinel Diaconu, Eram Rizvi, A. Petrukhin, J. Zálešák, V. Spaskov, Stefania Xella, G. Heinzelmann, V. Dodonov, V. Efremenko, Wolfgang Lange, Pierre Marage, A. Aktas, M. Jacquet, J. Kückens, K. Wacker, M. Kapichine, M. Nozicka, A. B. Meyer, E. Perez, G. Flucke, S. Levonian, S. Essenov, I. Glushkov, Stephen Maxfield, V. Lendermann, J. Gayler, S. Mikocki, C. Goyon, B. Delcourt, Th. Naumann, K. H. Hiller, R. C. W. Henderson, J. Stiewe, K. Krastev, M. Fleischer, S. Schätzel, I. Milcewicz-Mika, Ewelina Lobodzinska, Andrew Mehta, J. Bracinik, Anton Babaev, J. G. Contreras, Dusan Bruncko, N. Gogitidze, B. Naroska, L. Lindfeld, J. E. Olsson, G. Laštovička-Medin, A.-I. Lucaci-Timoce, Matthew Beckingham, P. E. Reimer, E. Gabathuler, V. Brisson, A. Mohamed, I. R. Kenyon, W. Bartel, P. Prideaux, Malte Hildebrandt, O. Behnke, Klaus Desch, Anna Kropivnitskaya, T. Greenshaw, Erika Garutti, A. Specka, David South, F. W. Büsser, Bogdan Povh, F. Sefkow, A. W. Jung, A. Rimmer, Theodora Papadopoulou, Peter Robmann, S. Baudrand, A. Schöning, M. Wessels, A. Knutsson, K. Krüger, Natasa Raicevic, T. Zimmermann, G. Herrera, Vincent Boudry, V. Michels, W.D. Dau, Bradley Cox, R. Wolf, B. Wessling, J. B. Dainton, J. Ferencei, M. Martisikova, A. N. Morozov, D. Perez-Astudillo, M. Gregori, S. Backovic, H. Lueders, Claus Kleinwort, Magnus Hansson, M. Del Degan, L. Goerlich, K. Müller, W. Yan, J. Cvach, N. Loktionova, A. Hovhannisyan, I. Tsurin, B. Portheault, C. Niebuhr, S. Egli, Y. Soloviev, E. E. Elsen, Christoph Grab, A. Baghdasaryan, A. Rostovtsev, D. Utkin, J. Bähr, B. Olivier, P. Baranov, T. J. Sloan, P.J.W. Faulkner, A.S. Belousov, Sergey Rusakov, P. Truöl, G. Weber, U. Straumann, V. Korbel, C. Werner, J. Wagner, Karel Cerny, A. Glazov, John A Coughlan, B. Stella, Stefan Schmitt, Vladimir Palichik, F. Eisele, R. Oganezov, K. Sedlák, V. Cerny, F. Zomer, V. Andreev, G. Franke, J. Žáček, Hans-Christian Schultz-Coulon, A. Falkewicz, Tomas Hreus, R. Eichler, M.-O. Boenig, S. Mangano, Nicolas Berger, A. Zhelezov, Adrian Perieanu, Gerhard Brandt, V. Volchinski, H. Meyer, Xavier Janssen, J-P. Meyer, Sakar Osman, C. Veelken, O. Behrendt, S. Vinokurova, P. Kostka, J. Turnau, I. Tsakov, Roland Horisberger, A. Valkárová, G. Leibenguth, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), H1, Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), and H1 Collaboration

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, FOS: Physical sciences, HERA, 01 natural sciences, Measure (mathematics), High Energy Physics - Experiment, Calorimeter, Standard Model, Nuclear physics, High Energy Physics - Experiment (hep-ex), Cross section (physics), Positron, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], ddc:530, High Energy Physics::Experiment, 010306 general physics, Charged current, Bar (unit)
Abstract

Data taken with positrons of different longitudinal polarisation states in collision with unpolarised protons at HERA are used to measure the total cross sections of the charged current process, e^+ p \to \bar��X, for negative four-momentum transfer squared Q^2 > 400 GeV^2 and inelasticity y, 13 pages, 2 figures, 1 table

Published
2006

19. Elastic J/Psi Production at HERA

Author

S. Levonian, I. Foresti, G. Cozzika, C. Schmitz, Hannes Jung, Alexander Zhokin, J. Becker, C. Vallée, M.-O. Boenig, P. E. Reimer, David South, A. Nikiforov, C. Goyon, P. D. Thompson, V. Yeganov, S. Mangano, K. Krüger, R. Marshall, F. Moreau, S. J. Aplin, A. Makankine, G. Buschhorn, D. Ozerov, R. Weber, B. Portheault, Nicolas Berger, Matthias Ulrich Mozer, A. Fedotov, G. Laštovička-Medin, Klaus Desch, A. Rimmer, A. Petrukhin, A. Knutsson, D. Wegener, Gero Flucke, M. Kapichine, M. Nozicka, A. Zhelezov, S. Ginzburgskaya, C. Kiesling, E. Tzamariudaki, A. J. Campbell, S. Essenov, Sakar Osman, Paul Laycock, E. Malinovski, Emmanuel Sauvan, A. M. Fomenko, V. Lubimov, S. Baudrand, Wolfgang Lange, Adrian Perieanu, B. Delcourt, K. H. Hiller, R. C. W. Henderson, C. Veelken, G. Grindhammer, V. P. Andreev, C. Gerlich, J. Gayler, F. Eisele, V. Jemanov, Magnus Hansson, M. Del Degan, D. Meer, D. Mladenov, Gerhard Brandt, Th. Naumann, C. Wigmore, R.N. Shaw-West, K. Nankov, C. Niebuhr, V. Efremenko, L. N. Shtarkov, Leif J. Jönsson, Benoit Roland, S. Schätzel, Søren Schmidt, R. Oganezov, K. Sedlák, A. Specka, V. Volchinski, S. Egli, Theodora Papadopoulou, Peter Robmann, A. D.R. Vargas Trevino, G. Nowak, T. Klimkovich, Roland Horisberger, J. Cvach, A. Valkárová, C. Risler, Xavier Janssen, E. Gabathuler, Y. Soloviev, S. Mikocki, V. Cerny, Ricardo Lopez-Fernandez, S. Hussain, S. Baumgartner, B. List, A. Aktas, Andreas Meyer, W. Yan, J. Zacek, Georgios Tsipolitis, M. Fleischer, Michael R. Wessels, Z. P. Zhang, F. P. Schilling, J. Zimmermann, J-P. Meyer, S. Backovic, A. Usik, V. Brisson, John A Coughlan, Laurent Schoeffel, H. Lueders, H. Henschel, J.C. Bizot, N. Loktionova, B. R. Grell, E. Lobodzinska, Stephen Maxfield, Bogdan Povh, F. Tomasz, F. Sefkow, A. Dubak, L. Bystritskaya, M. Goettlich, J. Stiewe, C. Gwilliam, B. Stella, Stefan Schmitt, A. Hovhannisyan, Christoph Grab, H. Zohrabyan, Y. Vazdik, D. Lüke, T. Kluge, Matthew Beckingham, Andrew Mehta, J. Bracinik, A. Astvatsatourov, M. Peez, Stefania Xella, N. Gogitidze, Katerina Lipka, Anna Kropivnitskaya, Dirk L. Hoffmann, R. Felst, G. Franke, K. Krastev, A. Vest, V. Tchoulakov, O. Behrendt, S. Vinokurova, V. Lendermann, L. Lindfeld, J. E. Olsson, T. Frisson, I. Strauch, T. Laštovička, W. Bartel, Philipp Fleischmann, E. Barrelet, Guenter Eckerlin, André Schöning, Malte Hildebrandt, Hans-Christian Schultz-Coulon, F. W. Büsser, L. Goerlich, P. Kostka, A.-I. Lucaci-Timoce, I. R. Kenyon, Z. Rurikova, A. Falkewicz, Natasa Raicevic, E. A. De Wolf, Ch. Berger, I. Tsurin, Vladimir Palichik, A. Baghdasaryan, Vincent Boudry, A. N. Morozov, D. Perez-Astudillo, M. Gregori, J. Turnau, Karlheinz Meier, R. Roosen, A. W. Jung, R. Eichler, A. Rostovtsev, Judith Katzy, Y. de Boer, M. Ellerbrock, A. Asmone, G. Herrera, Bradley Cox, J. Wagner, R. Wolf, B. Wessling, D. Utkin, J. Bähr, I. Tsakov, Karel Cerny, P. Baranov, Graham Thompson, A. Glazov, V. Korbel, T. J. Sloan, P.J.W. Faulkner, A.S. Belousov, Sergey Rusakov, H. U. Martyn, Matthias Klein, E. E. Elsen, K. Müller, Alexandre Lebedev, C. Werner, Paul Newman, T. Zimmermann, G. Leibenguth, G. Weber, U. Straumann, M. Jacquet, I. Milcewicz-Mika, Anton Babaev, J. G. Contreras, A. Mohamed, P. Prideaux, Pavel Murin, M. Ibbotson, B. Olivier, Laurent Favart, T. Anthonis, Murrough Landon, S. Gorbounov, W.D. Dau, J. B. Dainton, P. Van Mechelen, L. Finke, Y.C. Zhu, K. Daum, Ilias Panagoulias, G. Knies, Wolfram Erdmann, R. Plačakyte, S. Ghazaryan, M. Ismail, David Milstead, P. A. Smirnov, S. Caron, Daniel Pitzl, D. Traynor, J. V. Morris, F. Cassol-Brunner, D.K. Nikitin, O. Henshaw, L. Hajduk, Jenny List, M. Urban, C. Wissing, A.J. Rahmat, A. Bunyatyan, Thorsten Lux, L. Janauschek, Jan Kretzschmar, Andrej Liptaj, E. Wünsch, Dave Sankey, G. D. Patel, K. Wacker, H. Meyer, Biljana Antunović, D.P. Johnson, N. Malden, David Schmidt, C. Pascaud, F. Salvaire, D. Haidt, T. Hreus, L. Lytkin, A. De Roeck, Cristinel Diaconu, Eram Rizvi, Pierre Marage, G. Heinzelmann, V. Dodonov, I. Glushkov, O. Behnke, V. Chekelian, I. Sheviakov, Peter Truoel, J. Zálešák, V. Spaskov, J. Kückens, Dusan Bruncko, B. Naroska, E. Perez, T. Greenshaw, Erika Garutti, J. Ferencei, M. Martisikova, Claus Kleinwort, Fabian Zomer, 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), and Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)

Subjects
Particle physics, Physics and Astronomy (miscellaneous), Meson, Proton, Nuclear Theory, FOS: Physical sciences, 7. Clean energy, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Pomeron, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], ddc:530, 010306 general physics, Nuclear Experiment, Engineering (miscellaneous), Physics, Luminosity (scattering theory), 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Perturbative QCD, HERA, Helicity, Gluon, High Energy Physics::Experiment
Abstract

Cross sections for elastic production of J/Psi mesons in photoproduction and electroproduction are measured in electron proton collisions at HERA using an integrated luminosity of 55 pb^{-1}. Results are presented for photon virtualities Q^2 up to 80 GeV^2. The dependence on the photon-proton centre of mass energy W_{gamma p} is analysed in the range 40 < \Wgp < 305 GeV in photoproduction and 40 < \Wgp < 160 GeV in electroproduction. The \Wgp dependences of the cross sections do not change significantly with Q^2 and can be described by models based on perturbative QCD. Within such models, the data show a high sensitivity to the gluon density of the proton in the domain of low Bjorken x and low Q^2. Differential cross sections d��/dt, where t is the squared four-momentum transfer at the proton vertex, are measured in the range |t, 40 pages, 14 figures, 15 tables

Published
2006

20. Measurement of Event Shape Variables in Deep-Inelastic Scattering at HERA

Author

T. Laštovička, E. Barrelet, Z. Rurikova, Stephen Maxfield, E. A. De Wolf, Ch. Berger, Karlheinz Meier, R. Roosen, J. Stiewe, V. Jemanov, Y. de Boer, Andrew Mehta, J. Bracinik, N. Gogitidze, Søren Schmidt, Ilias Panagoulias, C. Risler, C. Wissing, B. List, Max Klein, G. Flucke, A. Aktas, A. W. Jung, I. Sheviakov, R. Plačakyte, C. Gwilliam, Peter Robmann, G. Herrera, Bradley Cox, R. Wolf, M. Ismail, David Milstead, V. Lubimov, V. Korbel, A. Petrukhin, P. A. Smirnov, A. Astvatsatourov, E. Gabathuler, J. Zálešák, V. Spaskov, B. Olivier, P. Baranov, V. Lendermann, Thorsten Lux, L. Janauschek, T. J. Sloan, P.J.W. Faulkner, A.S. Belousov, Sergey Rusakov, P. Truöl, J. Kückens, K. Wacker, A. B. Meyer, A. Nikiforov, C. Goyon, Anton Babaev, J. G. Contreras, A. Mohamed, M. Kapichine, M. Nozicka, B. R. Grell, B. Wessling, M.-O. Boenig, D. Sunar, A. Baghdasaryan, A. Rostovtsev, P. Prideaux, Magnus Hansson, A.-I. Lucaci-Timoce, Dusan Bruncko, S. Backovic, M. Del Degan, B. Naroska, Alexandre Lebedev, C. Werner, K. Nankov, Katerina Lipka, Paul Laycock, E. Malinovski, L. N. Shtarkov, Georgios Tsipolitis, M. Fleischer, F. Tomasz, Pavel Murin, V. Tchoulakov, H. Lueders, Michael R. Wessels, H. U. Martyn, Emmanuel Sauvan, G. Grindhammer, T. Greenshaw, V. Brisson, S. Schätzel, M. Ibbotson, Nicolas Berger, D. Utkin, G. Nowak, R.N. Shaw-West, S. Hussain, T. Hreus, L. Lytkin, A. Dubak, J. Bähr, A. D.R. Vargas Trevino, G. Thompson, C. Niebuhr, J. Ferencei, M. Martisikova, Cristinel Diaconu, Laurent Favart, T. Anthonis, Pierre Marage, R. Marshall, Leif J. Jönsson, V. Michels, W.D. Dau, Benoit Roland, D. Mladenov, J. V. Morris, A. Zhelezov, S. Baudrand, K. Müller, Y. Vazdik, Paul Newman, T. Zimmermann, J. B. Dainton, S. Egli, D. Lüke, Claus Kleinwort, Stefania Xella, M. Goettlich, Sakar Osman, H. Peng, K. Krastev, Y. Soloviev, J-P. Meyer, I. Glushkov, S. Levonian, Jenny List, A.J. Rahmat, A. Bunyatyan, T. Klimkovich, L. Lindfeld, J. Zimmermann, A. Makankine, E. Lobodzinska, Bogdan Povh, F. Sefkow, G. Weber, G. Leibenguth, Matthias Ulrich Mozer, A. Fedotov, S. Ginzburgskaya, H. Henschel, Fabian Zomer, I. Foresti, Dirk L. Hoffmann, J. C. Bizot, G. Franke, G. Cozzika, J. Cvach, Christoph Grab, C. Veelken, C. Kiesling, G. Buschhorn, F. Eisele, D. Ozerov, R. Weber, T. Kluge, Judith Katzy, A. De Roeck, E. Tzamariudaki, A. J. Campbell, E. Perez, T. Frisson, I. Strauch, Philipp Fleischmann, R. Oganezov, A. Asmone, C. Schmitz, U. Straumann, Thomas Naumann, Erika Garutti, K. Sedlák, Hannes Jung, Alexander Zhokin, Wolfgang Lange, K. H. Hiller, R. C. W. Henderson, Daniel Pitzl, J. Becker, J. Wagner, D. Wegener, C. Vallée, Zhen Zhang, Ricardo Lopez-Fernandez, D. Traynor, I. Milcewicz-Mika, David South, Laurent Schoeffel, V. Chekelian, V. Cerny, J. Gayler, F. Cassol-Brunner, K. Krüger, S. Baumgartner, L. Hajduk, Karel Cerny, Guenter Eckerlin, André Schöning, D. Meer, E. Wünsch, O. Behnke, M. Urban, L. Goerlich, Dave Sankey, M. Steder, Wolfram Erdmann, V. Efremenko, Jan Kretzschmar, J. Žáček, P. E. Reimer, B. Delcourt, Andrej Liptaj, S. Mikocki, A. Glazov, A. Usik, A. Specka, G. D. Patel, Adrian Perieanu, H. Meyer, Matthew Beckingham, Biljana Antunović, D.P. Johnson, S. Ghazaryan, G. Laštovička-Medin, O. Behrendt, S. Vinokurova, N. Malden, Anna Kropivnitskaya, R. Felst, Hans-Christian Schultz-Coulon, Klaus Desch, C. Pascaud, A. M. Fomenko, A. Rimmer, J. E. Olsson, F. Salvaire, W. Bartel, V. P. Andreev, D. Haidt, B. Portheault, C. Gerlich, A. Knutsson, Gerhard Brandt, Eram Rizvi, Theodora Papadopoulou, Malte Hildebrandt, C. Wigmore, K. Urban, G. Heinzelmann, Murrough Landon, V. Dodonov, P. Kostka, S. Gorbounov, P. D. Thompson, V. Volchinski, V. Yeganov, P. Van Mechelen, A. Falkewicz, L. Finke, F. W. Büsser, J. Turnau, Y.C. Zhu, K. Daum, S. Mangano, F. Moreau, R. Eichler, G. Knies, S. J. Aplin, I. Tsakov, Xavier Janssen, I. R. Kenyon, Roland Horisberger, A. Valkárová, Natasa Raicevic, J. Feltesse, Vincent Boudry, S. Essenov, A. N. Morozov, D. Perez-Astudillo, M. Gregori, L. Bystritskaya, H. Zohrabyan, W. Yan, N. Loktionova, A. Hovhannisyan, I. Tsurin, M. Jacquet, E. E. Elsen, B. Stella, Stefan Schmitt, Vladimir Palichik, John A Coughlan, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), H1, Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Quantum chromodynamics, Physics, Particle physics, Luminosity (scattering theory), Physics and Astronomy (miscellaneous), 010308 nuclear & particles physics, Generator (category theory), FOS: Physical sciences, Perturbative QCD, HERA, Jet (particle physics), Deep inelastic scattering, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], ddc:530, High Energy Physics::Experiment, 010306 general physics, Engineering (miscellaneous), Energy (signal processing)
Abstract

Deep-inelastic ep scattering data taken with the H1 detector at HERA and corresponding to an integrated luminosity of 106 pb-1 are used to study the differential distributions of event shape variables. These include thrust, jet broadening, jet mass and the C-parameter. The four-momentum transfer Q is taken to be the relevant energy scale and ranges between 14 GeV and 200 GeV. The event shape distributions are compared with perturbative QCD predictions, which include resummed contributions and analytical power law corrections, the latter accounting for non-perturbative hadronisation effects. The data clearly exhibit the running of the strong coupling αs(Q) and are consistent with a universal power correction parameter α0 for all event shape variables. A combined QCD fit using all event shape variables yields αs(mZ)=0.1198±0.0013 +0.0056 -0.0043 and α0=0.476±0.008 +0.018 -0.059., The European Physical Journal C, 46 (2), ISSN:1434-6044, ISSN:1434-6052

Published
2006

21. Measurement of the inclusive ep scattering cross section at low Q 2 and x at HERA

Author

V. Jemanov, V. Korbel, A. Raspiareza, Krzysztof Kutak, S. Shushkevich, Sakar Osman, A. Eliseev, A. D.R. Vargas Trevino, M. Jacquet, J-P. Meyer, A. Schöning, Grzegorz Nowak, A. Dossanov, A. Petrukhin, N. Loktionova, R. Kogler, P. D. Thompson, J. V. Morris, Jenny List, C. Niebuhr, F. Moreau, Daniel Pitzl, D. Traynor, T. Preda, Wolfgang Lange, S. J. Aplin, A. Asmone, F. Cassol-Brunner, J. Cvach, J. Gayler, Calin Alexa, S. Ghazaryan, Ivan Smiljanic, D. Salek, S. Egli, Y. Soloviev, V. Brisson, Vladimir Andreev, H. U. Martyn, A.J. Rahmat, A. Bunyatyan, Paul Newman, T. Zimmermann, Doris Eckstein, Roland Horisberger, K. H. Hiller, A. Valkárová, R. C. W. Henderson, V. Boudry, J. G. Contreras, Jan Kretzschmar, A. Makankine, G. Buschhorn, D. Ozerov, Christian Helebrant, Marina Rotaru, K. Müller, K. Daum, Voica Radescu, T. Toll, V. Lendermann, Magnus Hansson, Christoph Grab, Paul Laycock, E. Malinovski, Emmanuel Sauvan, G. Grindhammer, K. Lipka, M. Del Degan, T. H. Tran, A. Lebedev, O. Behrendt, S. Vinokurova, Andrej Liptaj, D. J. Fischer, E. E. Elsen, P. E. Reimer, T. Laštovička, A. Specka, Peter Robmann, B. Stella, David M. South, A. Baghdasaryan, P. Kostka, Emmanuelle Perez, J. Turnau, L. Goerlich, V. Tchoulakov, D. Haidt, A. De Roeck, D. Wegener, Stefan Schmitt, K. Begzsuren, M. Mudrinic, D. Sunar, Gerhard Brandt, V. Volchinski, A. Nikiforov, B. Olivier, E. Barrelet, J. E. Ruiz Tabasco, E. A. De Wolf, Karlheinz Meier, R. Roosen, U. Straumann, L. Bystritskaya, M. E. Janssen, S. M. Piec, I. Tsakov, J. Žáček, H. Zohrabyan, Hans-Christian Schultz-Coulon, H. Meyer, Xavier Janssen, Y. de Boer, Eram Rizvi, O. Pejchal, Ll. Marti, A. Cholewa, S. Backovic, G. Laštovička-Medin, I. Bozovic-Jelisavcic, Vladimir Palichik, Pavel Murin, L. Lytkin, M. Herbst, Cristinel Diaconu, R.N. Shaw-West, Zuzana Rurikova, Tomas Hreus, K. Nowak, T. N. Trinh, V. Cerny, Benno List, V. Dodonov, Pierre Marage, Tim Greenshaw, M. Deak, I. Glushkov, Stephen Maxfield, Laurent Favart, V. Lubimov, A. Knutsson, B. Tseepeldorj, M. Brinkmann, Andrew Mehta, N. Gogitidze, T. J. Sloan, P.J.W. Faulkner, V. Efremenko, A.S. Belousov, Th D. Papadopoulou, Sergey Rusakov, P. Truöl, A. Astvatsatourov, Mila Pandurovic, G. Thompson, Karel Cerny, O. Behnke, A. Dubak, J. Ferencei, Z. Staykova, Laurent Schoeffel, Ewelina Lobodzinska, L. N. Shtarkov, Judith Katzy, E. Wünsch, Dave Sankey, A. W. Jung, Anna Kropivnitskaya, R. Felst, S. Mikocki, H. Henschel, J. Delvax, G. Herrera, John A Coughlan, M. von den Driesch, G. D. Patel, K. Urban, J.C. Bizot, Murrough Landon, Biljana Antunović, Fabian Zomer, T. Sykora, S. Habib, G. Cozzika, A. Glazov, K. Krüger, E. Hennekemper, C. Schmitz, Hannes Jung, Alexander Zhokin, C. Vallée, P. Van Mechelen, S. Levonian, M. Kapichine, M. Nozicka, B. Delcourt, Leif J. Jönsson, Benoit Roland, J. Feltesse, Ilias Panagoulias, Max Klein, B. R. Grell, M. Sauter, F. Tomasz, M. Fleischer, G. Leibenguth, Bogdan Povh, F. Sefkow, Gang Li, T. Kluge, K. Krastev, Matthias Ulrich Mozer, A. Fedotov, I. Picuric, C. Pascaud, K. B. Cantun Avila, C. Kiesling, Gabriel Stoicea, Guenter Eckerlin, A. J. Campbell, I. Milcewicz-Mika, M. Gouzevitch, R. Plačakytė, P. Sopicki, C. Wissing, Zhen Zhang, Juraj Bracinik, A. M. Fomenko, Ricardo Lopez-Fernandez, Th. Naumann, A. Falkiewicz, E. Gabathuler, M. Steder, D. Hoffmann, V. Michels, J. B. Dainton, J. E. Olsson, W. Bartel, Malte Hildebrandt, I. R. Kenyon, Natasa Raicevic, Y. Vazdik, A. N. Morozov, M. Kraemer, Richard Polifka, V. Chekelian, F. D. Aaron, I. Sheviakov, J. Zálešák, V. Spaskov, A. B. Meyer, Dusan Bruncko, B. Naroska, T. Ravdandorj, A. Rostovtsev, Claus Kleinwort, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, H1, Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), (ukupan broj autora: 259), and H1 Collaboration

Subjects
Particle physics, Physics and Astronomy (miscellaneous), Monte Carlo method, FOS: Physical sciences, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, Momentum, Cross section (physics), High Energy Physics - Experiment (hep-ex), Positron, 0103 physical sciences, Radiative transfer, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], ddc:530, 010306 general physics, Nuclear Experiment, Engineering (miscellaneous), Physics, 010308 nuclear & particles physics, HERA, Deep inelastic scattering, Physique des particules élémentaires, High Energy Physics::Experiment, Beam (structure)
Abstract

A measurement of the inclusive ep scattering cross section is presented in the region of low momentum transfers, 0.2∈GeV2 ≤Q 2≤12∈GeV2, and low Bjorken x, 5.10 -6x≤0.02. The result is based on two data sets collected in dedicated runs by the H1 Collaboration at HERA at beam energies of 27.6∈GeV and 920∈GeV for positrons and protons, respectively. A combination with data previously published by H1 leads to a cross section measurement of a few percent accuracy. A kinematic reconstruction method exploiting radiative ep events extends the measurement to lower Q 2 and larger x. The data are compared with theoretical models which apply to the transition region from photoproduction to deep inelastic scattering. © 2009 Springer-Verlag / Società Italiana di Fisica., 0, SCOPUS: ar.j, info:eu-repo/semantics/published

Full Text
View/download PDF

22. Measurement of the charm and beauty structure functions using the H1 vertex detector at HERA

Author

Krzysztof Kutak, Fabian Zomer, J. V. Morris, Jenny List, A. D.R. Vargas Trevino, K. Müller, G. Cozzika, Juraj Bracinik, A.J. Rahmat, A. Bunyatyan, Marina Rotaru, Hannes Jung, Alexander Zhokin, R. Kogler, C. Vallée, J. Cvach, Dusan Bruncko, M. Kraemer, T. Greenshaw, Richard Polifka, V. Chekelian, F. D. Aaron, Christoph Wissing, A. Lebedev, K. Nowak, Stephen Maxfield, Mila Pandurovic, Paul Laycock, C. Niebuhr, D. Haidt, J. E. Olsson, W. Bartel, M. Deak, J. Ferencei, T. Ravdandorj, Claus Kleinwort, Andrew Mehta, N. Gogitidze, S. Egli, Malte Hildebrandt, E. Malinovski, Emmanuel Sauvan, J. Žáček, G. Grindhammer, R. Zus, J. Zálešák, Eram Rizvi, G. Thompson, V. Michels, V. Spaskov, Y. Soloviev, V. Dodonov, A. B. Meyer, Z. Staykova, T. H. Tran, M. Del Degan, A. W. Jung, G. Laštovička-Medin, Hans-Christian Schultz-Coulon, Judith Katzy, J. B. Dainton, P. E. Reimer, H. Henschel, I. R. Kenyon, B. Pokorny, K. Daum, G. Herrera, Alan Campbell, T. Kluge, Roland Horisberger, A. Valkárová, J.C. Bizot, S. Habib, Natasa Raicevic, L. Goerlich, A. Falkiewicz, Voica Radescu, Vincent Boudry, D. Sunar, M. Kapichine, M. Nozicka, E. Hennekemper, Gerhard Brandt, Christoph Grab, A. N. Morozov, K. Krüger, I. Picuric, C. Pascaud, J. Feltesse, Karel Cerny, V. Lubimov, K. Lipka, Ilias Panagoulias, A. Makankine, Guenter Eckerlin, André Schöning, Ivan Smiljanic, A. Nikiforov, D. Salek, B. Delcourt, D. Wegener, G. Buschhorn, D. Ozerov, Tomas Hreus, David M. South, V. Volchinski, V. Lendermann, D. J. Fischer, B. R. Grell, Vladimir Andreev, A. Dubak, Max Klein, H. U. Martyn, D. Traynor, F. Tomasz, Ll. Marti, A. Cholewa, L. N. Shtarkov, M. Sauter, Xavier Janssen, I. Bozovic-Jelisavcic, Leif J. Jönsson, L. Lytkin, Benoit Roland, M. Herbst, V. Efremenko, A. Baghdasaryan, A. Rostovtsev, Cristinel Diaconu, Laurent Schoeffel, B. Tseepeldorj, T. N. Trinh, M. Fleischer, K. Urban, Murrough Landon, S. Mikocki, G. Leibenguth, K. Krastev, S. Shushkevich, Sakar Osman, L. Bystritskaya, I. Glushkov, M. E. Janssen, A. Eliseev, Gabriel Stoicea, A. Glazov, H. Zohrabyan, Gang Li, Bogdan Povh, F. Sefkow, P. Van Mechelen, E. Wünsch, R. Plačakytė, B. Olivier, R.N. Shaw-West, S. Levonian, P. E. Marage, Zhen Zhang, Ricardo Lopez-Fernandez, P. Sopicki, Albert Knutsson, J-P. Meyer, V. Cerny, Benno List, A. M. Fomenko, Anna Kropivnitskaya, S. Vinokurova, I. Milcewicz-Mika, Daniel Pitzl, R. Felst, M. Steder, Maxime Gouzevitch, D. Hoffmann, J. G. Contreras, A. Asmone, Dave Sankey, J. Delvax, P. Kostka, F. Cassol-Brunner, J. Turnau, K. Begzsuren, Jan Kretzschmar, Andrej Liptaj, M. Mudrinic, Wolfgang Lange, M. Jacquet, I. Tsakov, K. Alimujiang, Christian Helebrant, M. von den Driesch, G. D. Patel, Biljana Antunović, T. Sykora, J. Gayler, Paul Newman, T. Zimmermann, Calin Alexa, U. Straumann, A. Raspiareza, Thomas Naumann, S. Ghazaryan, Theodora Papadopoulou, Peter Robmann, Pavel Murin, S. Backovic, Laurent Favart, Zuzana Rurikova, V. Tchoulakov, Matthias Ulrich Mozer, A. Fedotov, K. B. Cantun Avila, C. Kiesling, Grzegorz Nowak, A. Dossanov, A. Petrukhin, M. Aldaya Martin, V. Brisson, E. Barrelet, Y. Vazdik, J. E. Ruiz Tabasco, E. A. De Wolf, R. Roosen, Y. de Boer, P. D. Thompson, F. Moreau, H. J. Meyer, E. Gabathuler, K. H. Hiller, R. C. W. Henderson, A. Specka, M. Brinkmann, N. Loktionova, B. Stella, Stefan Schmitt, T. Preda, Vladimir Palichik, E. E. Elsen, T. Toll, Emmanuelle Perez, S. M. Piec, O. Pejchal, John A Coughlan, T. J. Sloan, A.S. Belousov, Sergey Rusakov, P. Truöl, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, H1, Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), H1 Collaboration, and (ukupan broj autora: 248)

Subjects
Quark, Particle physics, Physics and Astronomy (miscellaneous), FOS: Physical sciences, Elementary particle, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], ddc:530, Charm (quantum number), Nuclear Experiment, 010306 general physics, Engineering (miscellaneous), Physics, Neutral current, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, HERA, Deep inelastic scattering, Baryon, Pair production, Physique des particules élémentaires, High Energy Physics::Experiment
Abstract

Inclusive charm and beauty cross sections are measured in e-p and e+p neutral current collisions at HERA in the kinematic region of photon virtuality 5 ≤ Q2≤2000 GeV2 and Bjorken scaling variable 0. 0002≤x≤0.05. The data were collected with the H1 detector in the years 2006 and 2007 corresponding to an integrated luminosity of 189 pb-1. The numbers of charm and beauty events are determined using variables reconstructed by the H1 vertex detector including the impact parameter of tracks to the primary vertex and the position of the secondary vertex. The measurements are combined with previous data and compared to QCD predictions. © Springer-Verlag / Società Italiana di Fisica 2009., 0, DESY-09-096 / arxiv:0907.2643, SCOPUS: ar.j, info:eu-repo/semantics/published

Full Text
View/download PDF

23. Multi-Leptons with High Transverse Momentum at HERA

Author

F.D. Aaron, DESY Forschung Hochenergiephysik, H. Abramowicz, I. Abt, L. Adamczyk, M. Adamus, M. Aldaya Martin, C. Alexa, K. Alimujiang, V. Andreev, S. Antonelli, P. Antonioli, A. Antonov, B. Antunovic, M. Arneodo, A. Asmone, V. Aushev, O. Bachynska, S. Backovic, A. Baghdasaryan, A. Bamberger, A.N. Barakbaev, G. Barbagli, G. Bari, F. Barreiro, E. Barrelet, W. Bartel, D. Bartsch, M. Basile, K. Begzsuren, O. Behnke, J. Behr, U. Behrens, L. Bellagamba, A. Belousov, A. Bertolin, S. Bhadra, M. Bindi, J.C. Bizot, C. Blohm, T. Bołd, E.G. Boos, M. Borodin, K. Borras, D. Boscherini, D. Bot, V. Boudry, S.K. Boutle, I. Bozovic-Jelisavcic, J. Bracinik, G. Brandt, M. Brinkmann, V. Brisson, I. Brock, E. Brownson, R. Brugnera, N. Brümmer, D. Bruncko, A. Bruni, G. Bruni, B. Brzozowska, A. Bunyatyan, G. Buschhorn, P.J. Bussey, J.M. Butterworth, B. Bylsma, L. Bystritskaya, A. Caldwell, A.J. Campbell, K.B. Cantun Avila, M. Capua, R. Carlin, F. Cassol-Brunner, C.D. Catterall, K. Cerny, V. Cerny, S. Chekanov, V. Chekelian, A. Cholewa, J. Chwastowski, J. Ciborowski, R. Ciesielski, L. Cifarelli, F. Cindolo, A. Contin, J.G. Contreras, A.M. Cooper-Sarkar, N. Coppola, M. Corradi, F. Corriveau, M. Costa, J.A. Coughlan, G. Cozzika, J. Cvach, G. D'Agostini, J.B. Dainton, F. Dal Corso, K. Daum, M. Deák, Y. de Boer, J. de Favereau, B. Delcourt, M. Del Degan, J. del Peso, J. Delvax, R.K. Dementiev, S. De Pasquale, M. Derrick, R.C.E. Devenish, E.A. De Wolf, C. Diaconu, D. Dobur, V. Dodonov, B.A. Dolgoshein, A. Dossanov, A.T. Doyle, V. Drugakov, A. Dubak, L.S. Durkin, S. Dusini, G. Eckerlin, V. Efremenko, S. Egli, Y. Eisenberg, A. Eliseev, E. Elsen, P.F. Ermolov, A. Eskreys, A. Falkiewicz, S. Fang, L. Favart, S. Fazio, A. Fedotov, R. Felst, J. Feltesse, J. Ferencei, J. Ferrando, M.I. Ferrero, J. Figiel, D.-J. Fischer, M. Fleischer, A. Fomenko, M. Forrest, B. Foster, S. Fourletov, E. Gabathuler, A. Galas, E. Gallo, A. Garfagnini, J. Gayler, A. Geiser, S. Ghazaryan, I. Gialas, L.K. Gladilin, D. Gladkov, C. Glasman, A. Glazov, I. Glushkov, L. Goerlich, N. Gogitidze, Yu.A. Golubkov, P. Göttlicher, M. Gouzevitch, C. Grab, I. Grabowska-Bołd, J. Grebenyuk, T. Greenshaw, I. Gregor, B.R. Grell, G. Grigorescu, G. Grindhammer, G. Grzelak, C. Gwenlan, T. Haas, S. Habib, D. Haidt, W. Hain, R. Hamatsu, J.C. Hart, H. Hartmann, G. Hartner, C. Helebrant, R.C.W. Henderson, E. Hennekemper, H. Henschel, M. Herbst, G. Herrera, M. Hildebrandt, E. Hilger, K.H. Hiller, D. Hochman, D. Hoffmann, U. Holm, R. Hori, R. Horisberger, K. Horton, T. Hreus, A. Hüttmann, G. Iacobucci, Z.A. Ibrahim, Y. Iga, R. Ingbir, M. Ishitsuka, M. Jacquet, H.-P. Jakob, M.E. Janssen, X. Janssen, F. Januschek, M. Jimenez, T.W. Jones, L. Jönsson, A.W. Jung, H. Jung, M. Jüngst, I. Kadenko, B. Kahle, B. Kamaluddin, S. Kananov, T. Kanno, M. Kapichine, U. Karshon, F. Karstens, I.I. Katkov, J. Katzy, M. Kaur, P. Kaur, I.R. Kenyon, A. Keramidas, L.A. Khein, C. Kiesling, J.Y. Kim, D. Kisielewska, S. Kitamura, R. Klanner, M. Klein, U. Klein, C. Kleinwort, T. Kluge, A. Knutsson, E. Koffeman, R. Kogler, D. Kollar, P. Kooijman, I.A. Korzhavina, P. Kostka, A. Kota\'nski, U. Kötz, H. Kowalski, M. Kraemer, K. Krastev, J. Kretzschmar, A. Kropivnitskaya, K. Krüger, P. Kulinski, O. Kuprash, K. Kutak, M. Kuze, V.A. Kuzmin, M.P.J. Landon, W. Lange, G. Lastovicka-Medin, P. Laycock, A. Lebedev, A. Lee, G. Leibenguth, V. Lendermann, B.B. Levchenko, S. Levonian, A. Levy, G. Li, V. Libov, S. Limentani, T.Y. Ling, K. Lipka, A. Liptaj, M. Lisovyi, B. List, J. List, E. Lobodzinska, W. Lohmann, B. Löhr, E. Lohrmann, J.H. Loizides, N. Loktionova, K.R. Long, A. Longhin, D. Lontkovskyi, R. Lopez-Fernandez, V. Lubimov, J. Łukasik, O.Yu. Lukina, P. Łu\.zniak, L. Lytkin, J. Maeda, S. Magill, A. Makankine, I. Makarenko, E. Malinovski, J. Malka, R. Mankel, P. Marage, A. Margotti, G. Marini, Ll. Marti, J.F. Martin, H.-U. Martyn, A. Mastroberardino, T. Matsumoto, M.C.K. Mattingly, S.J. Maxfield, A. Mehta, I.-A. Melzer-Pellmann, A.B. Meyer, H. Meyer, J. Meyer, V. Michels, S. Miglioranzi, S. Mikocki, I. Milcewicz-Mika, F. Mohamad Idris, V. Monaco, A. Montanari, F. Moreau, A. Morozov, J.D. Morris, J.V. Morris, M.U. Mozer, M. Mudrinic, K. Müller, P. Murin, B. Musgrave, K. Nagano, T. Namsoo, R. Nania, Th. Naumann, P.R. Newman, D. Nicholass, C. Niebuhr, A. Nigro, A. Nikiforov, Y. Ning, U. Noor, D. Notz, G. Nowak, K. Nowak, R.J. Nowak, M. Nozicka, A.E. Nuncio-Quiroz, B.Y. Oh, N. Okazaki, K. Oliver, B. Olivier, K. Olkiewicz, J.E. Olsson, S. Osman, O. Ota, D. Ozerov, V. Palichik, I. Panagoulias, M. Pandurovic, Th. Papadopoulou, K. Papageorgiu, A. Parenti, C. Pascaud, G.D. Patel, E. Paul, J.M. Pawlak, B. Pawlik, O. Pejchal, P.G. Pelfer, A. Pellegrino, E. Perez, W. Perlanski, H. Perrey, A. Petrukhin, I. Picuric, S. Piec, K. Piotrzkowski, D. Pitzl, R. Placakythe, P. Plucinski, B. Pokorny, N.S. Pokrovskiy, R. Polifka, A. Polini, B. Povh, T. Preda, A.S. Proskuryakov, M. Przybycie\'n, V. Radescu, A.J. Rahmat, N. Raicevic, A. Raspiareza, A. Raval, T. Ravdandorj, D.D. Reeder, P. Reimer, B. Reisert, Z. Ren, J. Repond, Y.D. Ri, E. Rizvi, A. Robertson, P. Robmann, B. Roland, P. Roloff, E. Ron, R. Roosen, A. Rostovtsev, M. Rotaru, I. Rubinsky, J.E. Ruiz Tabasco, Z. Rurikova, S. Rusakov, M. Ruspa, R. Sacchi, D. Sálek, U. Samson, D.P.C. Sankey, G. Sartorelli, M. Sauter, E. Sauvan, A.A. Savin, D.H. Saxon, M. Schioppa, S. Schlenstedt, P. Schleper, W.B. Schmidke, S. Schmitt, U. Schneekloth, L. Schoeffel, V. Schönberg, A. Schöning, T. Schörner-Sadenius, H.-C. Schultz-Coulon, J. Schwartz, F. Sciulli, F. Sefkow, R.N. Shaw-West, L.M. Shcheglova, R. Shehzadi, S. Shimizu, L.N. Shtarkov, S. Shushkevich, I. Singh, I.O. Skillicorn, T. Sloan, W. Słomi\'nski, I. Smiljanic, W.H. Smith, V. Sola, A. Solano, Y. Soloviev, D. Son, P. Sopicki, Iu. Sorokin, V. Sosnovtsev, D. South, V. Spaskov, A. Specka, A. Spiridonov, H. Stadie, L. Stanco, Z. Staykova, M. Steder, B. Stella, A. Stern, T.P. Stewart, A. Stifutkin, G. Stoicea, P. Stopa, U. Straumann, S. Suchkov, D. Sunar, G. Susinno, L. Suszycki, T. Sykora, J. Sztuk, D. Szuba, J. Szuba, A.D. Tapper, E. Tassi, V. Tchoulakov, J. Terrón, T. Theedt, G. Thompson, P.D. Thompson, H. Tiecke, K. Tokushuku, T. Toll, F. Tomasz, J. Tomaszewska, T.H. Tran, D. Traynor, T.N. Trinh, P. Truöl, I. Tsakov, B. Tseepeldorj, T. Tsurugai, M. Turcato, J. Turnau, K. Urban, C. Uribe-Estrada, A. Valkárová, C. Vallée, P. Van Mechelen, A. Vargas Trevino, Y. Vazdik, M. Vázquez, A. Verbytskyi, S. Vinokurova, N.N. Vlasov, V. Volchinski, O. Volynets, M. von den Driesch, R. Walczak, W.A.T. Wan Abdullah, D. Wegener, J.J. Whitmore, J. Whyte, L. Wiggers, M. Wing, Ch. Wissing, M. Wlasenko, G. Wolf, H. Wolfe, K. Wrona, E. Wünsch, A.G. Yagües-Molina, S. Yamada, Y. Yamazaki, R. Yoshida, C. Youngman, J. Zácek, J. Zálesák, A.F. \.Zarnecki, L. Zawiejski, W. Zeuner, Z. Zhang, B.O. Zhautykov, A. Zhokin, C. Zhou, A. Zichichi, T. Zimmermann, H. Zohrabyan, M. Zolko, F. Zomer, D.S. Zotkin, R. Zus, F.D. Aaron, DESY Forschung Hochenergiephysik, H. Abramowicz, I. Abt, L. Adamczyk, M. Adamus, M. Aldaya Martin, C. Alexa, K. Alimujiang, V. Andreev, S. Antonelli, P. Antonioli, A. Antonov, B. Antunovic, M. Arneodo, A. Asmone, V. Aushev, O. Bachynska, S. Backovic, A. Baghdasaryan, A. Bamberger, A.N. Barakbaev, G. Barbagli, G. Bari, F. Barreiro, E. Barrelet, W. Bartel, D. Bartsch, M. Basile, K. Begzsuren, O. Behnke, J. Behr, U. Behrens, L. Bellagamba, A. Belousov, A. Bertolin, S. Bhadra, M. Bindi, J.C. Bizot, C. Blohm, T. Bołd, E.G. Boos, M. Borodin, K. Borras, D. Boscherini, D. Bot, V. Boudry, S.K. Boutle, I. Bozovic-Jelisavcic, J. Bracinik, G. Brandt, M. Brinkmann, V. Brisson, I. Brock, E. Brownson, R. Brugnera, N. Brümmer, D. Bruncko, A. Bruni, G. Bruni, B. Brzozowska, A. Bunyatyan, G. Buschhorn, P.J. Bussey, J.M. Butterworth, B. Bylsma, L. Bystritskaya, A. Caldwell, A.J. Campbell, K.B. Cantun Avila, M. Capua, R. Carlin, F. Cassol-Brunner, C.D. Catterall, K. Cerny, V. Cerny, S. Chekanov, V. Chekelian, A. Cholewa, J. Chwastowski, J. Ciborowski, R. Ciesielski, L. Cifarelli, F. Cindolo, A. Contin, J.G. Contreras, A.M. Cooper-Sarkar, N. Coppola, M. Corradi, F. Corriveau, M. Costa, J.A. Coughlan, G. Cozzika, J. Cvach, G. D'Agostini, J.B. Dainton, F. Dal Corso, K. Daum, M. Deák, Y. de Boer, J. de Favereau, B. Delcourt, M. Del Degan, J. del Peso, J. Delvax, R.K. Dementiev, S. De Pasquale, M. Derrick, R.C.E. Devenish, E.A. De Wolf, C. Diaconu, D. Dobur, V. Dodonov, B.A. Dolgoshein, A. Dossanov, A.T. Doyle, V. Drugakov, A. Dubak, L.S. Durkin, S. Dusini, G. Eckerlin, V. Efremenko, S. Egli, Y. Eisenberg, A. Eliseev, E. Elsen, P.F. Ermolov, A. Eskreys, A. Falkiewicz, S. Fang, L. Favart, S. Fazio, A. Fedotov, R. Felst, J. Feltesse, J. Ferencei, J. Ferrando, M.I. Ferrero, J. Figiel, D.-J. Fischer, M. Fleischer, A. Fomenko, M. Forrest, B. Foster, S. Fourletov, E. Gabathuler, A. Galas, E. Gallo, A. Garfagnini, J. Gayler, A. Geiser, S. Ghazaryan, I. Gialas, L.K. Gladilin, D. Gladkov, C. Glasman, A. Glazov, I. Glushkov, L. Goerlich, N. Gogitidze, Yu.A. Golubkov, P. Göttlicher, M. Gouzevitch, C. Grab, I. Grabowska-Bołd, J. Grebenyuk, T. Greenshaw, I. Gregor, B.R. Grell, G. Grigorescu, G. Grindhammer, G. Grzelak, C. Gwenlan, T. Haas, S. Habib, D. Haidt, W. Hain, R. Hamatsu, J.C. Hart, H. Hartmann, G. Hartner, C. Helebrant, R.C.W. Henderson, E. Hennekemper, H. Henschel, M. Herbst, G. Herrera, M. Hildebrandt, E. Hilger, K.H. Hiller, D. Hochman, D. Hoffmann, U. Holm, R. Hori, R. Horisberger, K. Horton, T. Hreus, A. Hüttmann, G. Iacobucci, Z.A. Ibrahim, Y. Iga, R. Ingbir, M. Ishitsuka, M. Jacquet, H.-P. Jakob, M.E. Janssen, X. Janssen, F. Januschek, M. Jimenez, T.W. Jones, L. Jönsson, A.W. Jung, H. Jung, M. Jüngst, I. Kadenko, B. Kahle, B. Kamaluddin, S. Kananov, T. Kanno, M. Kapichine, U. Karshon, F. Karstens, I.I. Katkov, J. Katzy, M. Kaur, P. Kaur, I.R. Kenyon, A. Keramidas, L.A. Khein, C. Kiesling, J.Y. Kim, D. Kisielewska, S. Kitamura, R. Klanner, M. Klein, U. Klein, C. Kleinwort, T. Kluge, A. Knutsson, E. Koffeman, R. Kogler, D. Kollar, P. Kooijman, I.A. Korzhavina, P. Kostka, A. Kota\'nski, U. Kötz, H. Kowalski, M. Kraemer, K. Krastev, J. Kretzschmar, A. Kropivnitskaya, K. Krüger, P. Kulinski, O. Kuprash, K. Kutak, M. Kuze, V.A. Kuzmin, M.P.J. Landon, W. Lange, G. Lastovicka-Medin, P. Laycock, A. Lebedev, A. Lee, G. Leibenguth, V. Lendermann, B.B. Levchenko, S. Levonian, A. Levy, G. Li, V. Libov, S. Limentani, T.Y. Ling, K. Lipka, A. Liptaj, M. Lisovyi, B. List, J. List, E. Lobodzinska, W. Lohmann, B. Löhr, E. Lohrmann, J.H. Loizides, N. Loktionova, K.R. Long, A. Longhin, D. Lontkovskyi, R. Lopez-Fernandez, V. Lubimov, J. Łukasik, O.Yu. Lukina, P. Łu\.zniak, L. Lytkin, J. Maeda, S. Magill, A. Makankine, I. Makarenko, E. Malinovski, J. Malka, R. Mankel, P. Marage, A. Margotti, G. Marini, Ll. Marti, J.F. Martin, H.-U. Martyn, A. Mastroberardino, T. Matsumoto, M.C.K. Mattingly, S.J. Maxfield, A. Mehta, I.-A. Melzer-Pellmann, A.B. Meyer, H. Meyer, J. Meyer, V. Michels, S. Miglioranzi, S. Mikocki, I. Milcewicz-Mika, F. Mohamad Idris, V. Monaco, A. Montanari, F. Moreau, A. Morozov, J.D. Morris, J.V. Morris, M.U. Mozer, M. Mudrinic, K. Müller, P. Murin, B. Musgrave, K. Nagano, T. Namsoo, R. Nania, Th. Naumann, P.R. Newman, D. Nicholass, C. Niebuhr, A. Nigro, A. Nikiforov, Y. Ning, U. Noor, D. Notz, G. Nowak, K. Nowak, R.J. Nowak, M. Nozicka, A.E. Nuncio-Quiroz, B.Y. Oh, N. Okazaki, K. Oliver, B. Olivier, K. Olkiewicz, J.E. Olsson, S. Osman, O. Ota, D. Ozerov, V. Palichik, I. Panagoulias, M. Pandurovic, Th. Papadopoulou, K. Papageorgiu, A. Parenti, C. Pascaud, G.D. Patel, E. Paul, J.M. Pawlak, B. Pawlik, O. Pejchal, P.G. Pelfer, A. Pellegrino, E. Perez, W. Perlanski, H. Perrey, A. Petrukhin, I. Picuric, S. Piec, K. Piotrzkowski, D. Pitzl, R. Placakythe, P. Plucinski, B. Pokorny, N.S. Pokrovskiy, R. Polifka, A. Polini, B. Povh, T. Preda, A.S. Proskuryakov, M. Przybycie\'n, V. Radescu, A.J. Rahmat, N. Raicevic, A. Raspiareza, A. Raval, T. Ravdandorj, D.D. Reeder, P. Reimer, B. Reisert, Z. Ren, J. Repond, Y.D. Ri, E. Rizvi, A. Robertson, P. Robmann, B. Roland, P. Roloff, E. Ron, R. Roosen, A. Rostovtsev, M. Rotaru, I. Rubinsky, J.E. Ruiz Tabasco, Z. Rurikova, S. Rusakov, M. Ruspa, R. Sacchi, D. Sálek, U. Samson, D.P.C. Sankey, G. Sartorelli, M. Sauter, E. Sauvan, A.A. Savin, D.H. Saxon, M. Schioppa, S. Schlenstedt, P. Schleper, W.B. Schmidke, S. Schmitt, U. Schneekloth, L. Schoeffel, V. Schönberg, A. Schöning, T. Schörner-Sadenius, H.-C. Schultz-Coulon, J. Schwartz, F. Sciulli, F. Sefkow, R.N. Shaw-West, L.M. Shcheglova, R. Shehzadi, S. Shimizu, L.N. Shtarkov, S. Shushkevich, I. Singh, I.O. Skillicorn, T. Sloan, W. Słomi\'nski, I. Smiljanic, W.H. Smith, V. Sola, A. Solano, Y. Soloviev, D. Son, P. Sopicki, Iu. Sorokin, V. Sosnovtsev, D. South, V. Spaskov, A. Specka, A. Spiridonov, H. Stadie, L. Stanco, Z. Staykova, M. Steder, B. Stella, A. Stern, T.P. Stewart, A. Stifutkin, G. Stoicea, P. Stopa, U. Straumann, S. Suchkov, D. Sunar, G. Susinno, L. Suszycki, T. Sykora, J. Sztuk, D. Szuba, J. Szuba, A.D. Tapper, E. Tassi, V. Tchoulakov, J. Terrón, T. Theedt, G. Thompson, P.D. Thompson, H. Tiecke, K. Tokushuku, T. Toll, F. Tomasz, J. Tomaszewska, T.H. Tran, D. Traynor, T.N. Trinh, P. Truöl, I. Tsakov, B. Tseepeldorj, T. Tsurugai, M. Turcato, J. Turnau, K. Urban, C. Uribe-Estrada, A. Valkárová, C. Vallée, P. Van Mechelen, A. Vargas Trevino, Y. Vazdik, M. Vázquez, A. Verbytskyi, S. Vinokurova, N.N. Vlasov, V. Volchinski, O. Volynets, M. von den Driesch, R. Walczak, W.A.T. Wan Abdullah, D. Wegener, J.J. Whitmore, J. Whyte, L. Wiggers, M. Wing, Ch. Wissing, M. Wlasenko, G. Wolf, H. Wolfe, K. Wrona, E. Wünsch, A.G. Yagües-Molina, S. Yamada, Y. Yamazaki, R. Yoshida, C. Youngman, J. Zácek, J. Zálesák, A.F. \.Zarnecki, L. Zawiejski, W. Zeuner, Z. Zhang, B.O. Zhautykov, A. Zhokin, C. Zhou, A. Zichichi, T. Zimmermann, H. Zohrabyan, M. Zolko, F. Zomer, D.S. Zotkin, and R. Zus

Abstract

Journal article

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

Author

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

Subjects
Particle physics, Nuclear and High Energy Physics, HERA, Hadron, Lepton-Nucleon Scattering, FOS: Physical sciences, Electron, Astrophysics::Cosmology and Extragalactic Astrophysics, 7. Clean energy, 01 natural sciences, High Energy Physics - Experiment, Standard Model, High Energy Physics - Experiment (hep-ex), High Energy Physics, ZEUS Collaboration, EP COLLISIONS, SEARCH, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], ddc:530, CALORIMETER, 010306 general physics, Nuclear Experiment, Physics, BOSON PRODUCTION, Muon, ZEUS (particle detector), Luminosity (scattering theory), 010308 nuclear & particles physics, High Energy Physics::Phenomenology, HIGH-ENERGY LEPTON, High Energy Physics::Experiment, HADRON-COLLISIONS, Particle Physics - Experiment, Lepton
Abstract

A search for events containing an isolated electron or muon and missing transverse momentum produced in ep collisions is performed with the H1 and ZEUS detectors at HERA. The data were taken in the period 1994-2007 and correspond to an integrated luminosity of 0.98 fb^-1. The observed event yields are in good overall agreement with the Standard Model prediction, which is dominated by single W production. In the e+p data, at large hadronic transverse momentum PtX >25 GeV, a total of 23 events are observed compared to a prediction of 14.0 \pm 1.9. The total single W boson production cross section is measured as 1.06 \pm 0.16 (stat.) \pm 0.07 (sys) pb, in agreement with an SM expectation of 1.26 \pm 0.19 pb., 19 pages, 3 figures, v2 updated to correspond to Journal version

Published
2010

25. Multi-leptons with high transverse momentum at HERA

Author

Aaron, Fd[, 1, 105, ], Abramowicz, H[, 79, 107, ], Abt, I[ 61 ], Adamczyk, L[ 22 ], Adamus, M[ 92 ], Martin, MA[ 34 ], Alexa, C[ 1 ], Alimujiang, K[ 34 ], Andreev, V[ 58 ], Antonelli, S[, 10, 11, ], Antonioli, P[ 10 ], Antonov, A[, 1, 59, ], Antunovic, B[ 34 ], Arneodo, M[, 84, 85, ], Asmone, A[, 73, 74, ], Aushev, V[, 39, 40, ], Bachynska, O[, 39, Backovic, S[ 69 ], Baghdasaryan, A[ 94 ], Bamberger, A[ 30 ], Barakbaev, AN[ 3 ], Barbagli, G[ 28 ], Bari, G[ 10 ], Barreiro, F[ 54 ], Barrelet, E[, 67, 68, ], Bartel, W[ 34 ], Bartsch, D[ 12 ], Basile, M[, 10, Begzsuren, K[ 88 ], Behnke, O[ 34 ], Behr, J[ 34 ], Behrens, U[ 34 ], Bellagamba, L[ 10 ], Belousov, A[ 58 ], Bertolin, A[ 64 ], Bhadra, S[ 96 ], Bindi, Bizot, JC[ 62 ], Blohm, C[ 34 ], Bold, T[ 22 ], Boos, EG[ 3 ], Borodin, M[, 39, Borras, K[ 34 ], Boscherini, D[ 10 ], Bot, D[ 34 ], Boudry, V[ 66 ], Boutle, SK[ 46 ], Bozovic Jelisavcic, I[ 7 ], Bracinik, J[ 9 ], Brandt, G[ 34 ], Brinkmann, M[ 33 ], Brisson, V[ 62 ], Brock, I[ 12 ], Brownson, E[ 53 ], Brugnera, R[, 64, 65, ], Brummer, N[ 18 ], Bruncko, D[ 41 ], Bruni, A[ 10 ], Bruni, G[ 10 ], Brzozowska, B[ 91 ], Bunyatyan, A[, 35, 94, ], Buschhorn, G[ 61 ], Bussey, PJ[ 32 ], Butterworth, JM[ 46 ], Bylsma, B[ 18 ], Bystritskaya, L[ 57 ], Caldwell, A[ 61 ], Campbell, AJ[ 34 ], Avila, KBC[ 51 ], Capua, M[, 19, 20, ], Carlin, Cassol Brunner, F[ 55 ], Catterall, CD[ 96 ], Cerny, K[ 71 ], Cerny, V[, 41, 104, ], Chekanov, S[ 6 ], Chekelian, V[ 61 ], Cholewa, A[ 34 ], Chwastowski, J[ 21 ], Ciborowski, J[, 91, 110, ], Ciesielski, R[ 34 ], Cifarelli, L[, 10, Cindolo, F[ 10 ], Contin, A[, 10, Contreras, JG[ 51 ], Cooper Sarkar, AM[ 63 ], Coppola, N[ 34 ], Corradi, M[ 10 ], Corriveau, F[ 56 ], Costa, M[, 83, 84, ], Coughlan, JA[ 25 ], Cozzika, G[ 31 ], Cvach, J[ 70 ], D'Agostini, G[, 75, 76, ], Dainton, JB[ 45 ], Dal Corso, F[ 64 ], Daum, K[, 93, 101, ], Deak, M[ 34 ], de Boer, Y[ 34 ], de Favereau, J[ 49 ], Delcourt, B[ 62 ], Del Degan, M[ 98 ], del Peso, J[ 54 ], Delvax, J[, 14, 15, ], Dementiev, RK[ 60 ], DE PASQUALE, Salvatore, Derrick, M[ 6 ], Devenish, RCE[ 63 ], Wolf, De, Ea[, 14, Diaconu, C[ 55 ], Dobur, D[ 30 ], Dodonov, V[ 35 ], Dolgoshein, BA[ 59 ], Dossanov, A[ 61 ], Doyle, AT[ 32 ], Drugakov, V[ 97 ], Dubak, A[, 69, 61, ], Durkin, LS[ 18 ], Dusini, S[ 64 ], Eckerlin, G[ 34 ], Efremenko, V[ 57 ], Egli, S[ 90 ], Eisenberg, Y[ 72 ], Eliseev, A[ 58 ], Elsen, E[ 34 ], Ermolov, PF[ 60 ], Eskreys, A[ 21 ], Falkiewicz, A[ 21 ], Fang, S[ 34 ], Favart, L[, 14, Fazio, S[, 19, Fedotov, A[ 57 ], Felst, R[ 34 ], Feltesse, J[ 31 ], Ferencei, J[ 41 ], Ferrando, J[ 63 ], Ferrero, Mi[, 83, Figiel, J[ 21 ], Fischer, DJ[ 34 ], Fleischer, M[ 34 ], Fomenko, A[ 58 ], Forrest, M[ 32 ], Foster, B[ 63 ], Fourletov, S[ 86 ], Gabathuler, E[ 45 ], Galas, A[ 21 ], Gallo, E[ 28 ], Garfagnini, A[, 64, Gayler, J[ 34 ], Geiser, A[ 34 ], Ghazaryan, S[ 94 ], Gialas, I[ 17 ], Gladilin, LK[ 60 ], Gladkov, D[ 59 ], Glasman, C[ 54 ], Glazov, A[ 34 ], Glushkov, I[ 97 ], Goerlich, L[ 21 ], Gogitidze, N[ 58 ], Golubkov, YA[ 60 ], Gottlicher, P[ 34 ], Gouzevitch, M[ 34 ], Grab, C[ 98 ], Grabowska Bold, I[ 22 ], Grebenyuk, J[ 34 ], Greenshaw, T[ 45 ], Gregor, I[ 34 ], Grell, BR[ 34 ], Grigorescu, G[, 4, 5, ], Grindhammer, G[ 61 ], Grzelak, G[ 91 ], Gwenlan, C[ 63 ], Haas, T[ 34 ], Habib, S[ 33 ], Haidt, D[ 34 ], Hain, W[ 34 ], Hamatsu, R[ 82 ], Hart, JC[ 25 ], Hartmann, H[ 12 ], Hartner, G[ 96 ], Helebrant, C[ 34 ], Henderson, RCW[ 44 ], Hennekemper, E[ 37 ], Henschel, H[ 97 ], Herbst, M[ 37 ], Herrera, G[ 52 ], Hildebrandt, M[ 90 ], Hilger, E[ 12 ], Hiller, KH[ 97 ], Hochman, D[ 72 ], Hoffmann, D[ 55 ], Holm, U[ 33 ], Hori, R[ 81 ], Horisberger, R[ 90 ], Horton, K[ 63 ], Hreus, T[, 14, 102, ], Huttmann, A[ 34 ], Iacobucci, G[ 10 ], Ibrahim, ZA[ 42 ], Iga, Y[ 77 ], Ingbir, R[ 79 ], Ishitsuka, M[ 80 ], Jacquet, M[ 62 ], Jakob, HP[ 12 ], Janssen, ME[ 34 ], Janssen, X[, 14, Januschek, F[ 34 ], Jimenez, M[ 54 ], Jones, TW[ 46 ], Jonsson, L[ 50 ], Jung, AW[ 37 ], Jung, H[ 34 ], Jungst, M[ 12 ], Kadenko, I[, 39, Kahle, B[ 34 ], Kamaluddin, B[ 42 ], Kananov, S[ 79 ], Kanno, T[ 80 ], Kapichine, M[ 27 ], Karshon, U[ 72 ], Karstens, F[ 30 ], Katkov, II[ 34 ], Katzy, J[ 34 ], Kaur, M[ 16 ], Kaur, P[, 16, Kenyon, IR[ 9 ], Keramidas, A[, 4, Khein, LA[ 60 ], Kiesling, C[ 61 ], Kim, JY[ 43 ], Kisielewska, D[ 22 ], Kitamura, S[ 82 ], Klanner, R[ 33 ], Klein, M[ 45 ], Klein, U[ 34 ], Kleinwort, C[ 34 ], Kluge, T[ 45 ], Knutsson, A[ 34 ], Koffeman, E[, 4, Kogler, R[ 61 ], Kollar, D[ 61 ], Kooijman, P[, 4, Korzhavina, IA[ 60 ], Kostka, P[ 97 ], Kotanski, A[ 23 ], Kotz, U[ 34 ], Kowalski, H[ 34 ], Kraemer, M[ 34 ], Krastev, K[ 34 ], Kretzschmar, J[ 45 ], Kropivnitskaya, A[ 57 ], Kruger, K[ 37 ], Kulinski, P[ 91 ], Kuprash, Kutak, K[ 34 ], Kuze, M[ 80 ], Kuzmin, VA[ 60 ], Landon, MPJ[ 47 ], Lange, W[ 97 ], Lastovicka Medin, G[ 69 ], Laycock, P[ 45 ], Lebedev, A[ 58 ], Lee, A[ 18 ], Leibenguth, G[ 98 ], Lendermann, V[ 37 ], Levchenko, BB[ 60 ], Levonian, S[ 34 ], Levy, A[ 79 ], G[ 62 ], Li, Libov, Limentani, S[, 64, Ling, TY[ 18 ], Lipka, K[ 34 ], Liptaj, A[ 61 ], Lisovyi, M[ 34 ], List, B[ 33 ], List, J[ 34 ], Lobodzinska, E[ 34 ], Lohmann, W[ 97 ], Lohr, B[ 34 ], Lohrmann, E[ 33 ], Loizides, JH[ 46 ], Loktionova, N[ 58 ], Long, KR[ 48 ], Longhin, A[ 64 ], Lontkovskyi, D[, 39, Lopez Fernandez, R[ 52 ], Lubimov, V[ 57 ], Lukasik, J[ 22 ], Lukina, OY[ 60 ], Luzniak, P[ 91 ], Lytkin, L[ 35 ], Maeda, J[ 80 ], Magill, S[ 6 ], Makankine, A[ 27 ], Makarenko, Malinovski, E[ 58 ], Malka, J[ 91 ], Mankel, R[ 34 ], Marage, P[, 14, Margotti, A[ 10 ], Marini, Marti, L[ 34 ], Martin, JF[ 86 ], Martyn, HU[ 2 ], Mastroberardino, A[, 19, Matsumoto, T[ 87 ], Mattingly, MCK[ 8 ], Maxfield, SJ[ 45 ], Mehta, A[ 45 ], Melzer Pellmann, IA[ 34 ], Meyer, AB[ 34 ], Meyer, H[ 34 ], Meyer, H[ 93 ], Meyer, J[ 34 ], Michels, V[ 34 ], Miglioranzi, S[ 34 ], Mikocki, S[ 21 ], Milcewicz Mika, I[ 21 ], Idris, FM[ 42 ], Monaco, V[, 83, Montanari, A[ 34 ], Moreau, F[ 66 ], Morozov, A[ 27 ], Morris, Jd[, 1, 13, ], Morris, JV[ 25 ], Mozer, Mu[, 14, Mudrinic, M[ 7 ], Muller, K[ 99 ], Murin, P[, 41, Musgrave, B[ 6 ], Nagano, K[ 87 ], Namsoo, T[ 34 ], Nania, R[ 10 ], Naumann, T[ 97 ], Newman, PR[ 9 ], Nicholass, D[ 6 ], Niebuhr, C[ 34 ], Nigro, A[, 75, Nikiforov, A[ 34 ], Ning, Y[ 38 ], Noor, U[ 96 ], Notz, D[ 34 ], Nowak, G[ 21 ], Nowak, K[ 99 ], Nowak, RJ[ 91 ], Nozicka, M[ 34 ], Nuncio Quiroz, AE[ 12 ], BY[ 89 ], Oh, Okazaki, N[ 81 ], Oliver, K[ 63 ], Olivier, B[ 61 ], Olkiewicz, K[ 21 ], Olsson, JE[ 34 ], Osman, S[ 50 ], Ota, O[ 82 ], Ozerov, D[ 57 ], Palichik, V[ 27 ], Panagoulias, I[, 1, 34, ], Pandurovic, M[ 7 ], Papadopoulou, T[, 1, Papageorgiu, K[ 17 ], Parenti, A[ 34 ], Pascaud, C[ 62 ], Patel, GD[ 45 ], Paul, E[ 12 ], Pawlak, JM[ 91 ], Pawlik, B[ 21 ], Pejchal, O[ 71 ], Pelfer, Pg[, 28, 29, ], Pellegrino, 5 ], Perez, E[, 31, 103, ], Perlanski, W[ 91 ], Perrey, H[ 33 ], Petrukhin, A[ 57 ], Picuric, I[ 69 ], Piec, S[ 97 ], Piotrzkowski, K[ 49 ], Pitzl, D[ 34 ], Placakythe, R[ 34 ], Plucinski, P[ 92 ], Pokorny, B[ 33 ], Pokrovskiy, NS[ 3 ], Polifka, R[ 71 ], Polini, A[ 10 ], Povh, B[ 35 ], Preda, T[ 1 ], Proskuryakov, AS[ 60 ], Przybycien, M[ 22 ], Radescu, V[ 34 ], Rahmat, AJ[ 45 ], Raicevic, N[ 69 ], Raspiareza, A[ 61 ], Raval, A[ 89 ], Ravdandorj, T[ 88 ], Reeder, DD[ 53 ], Reimer, P[ 70 ], Reisert, B[ 61 ], Ren, Z[ 38 ], Repond, J[ 6 ], YD[ 82 ], Ri, Rizvi, E[ 47 ], Robertson, A[ 63 ], Robmann, P[ 99 ], Roland, B[, 14, Roloff, P[ 34 ], Ron, E[ 54 ], Roosen, R[, 14, Rostovtsev, A[ 57 ], Rotaru, M[ 1 ], Rubinsky, I[ 34 ], Tabasco, JER[ 51 ], Rurikova, Z[ 34 ], Rusakov, S[ 58 ], Ruspa, Sacchi, R[, 83, Salek, D[ 71 ], Samson, U[ 12 ], Sankey, DPC[ 25 ], Sartorelli, G[, 10, Sauter, M[ 98 ], Sauvan, E[ 55 ], Savin, AA[ 53 ], Saxon, DH[ 32 ], Schioppa, Schlenstedt, S[ 97 ], Schleper, P[ 33 ], Schmidke, WB[ 61 ], Schmitt, S[ 34 ], Schneekloth, U[ 34 ], Schoeffel, L[ 31 ], Schonberg, V[ 12 ], Schoning, A[ 36 ], Schorner Sadenius, T[ 33 ], Schultz Coulon, HC[ 37 ], Schwartz, J[ 56 ], Sciulli, F[ 38 ], Sefkow, F[ 34 ], Shaw West, RN[ 9 ], Shcheglova, LM[ 60 ], Shehzadi, R[ 12 ], Shimizu, S[ 81 ], Shtarkov, LN[ 58 ], Shushkevich, S[ 61 ], Singh, I[, 16, Skillicorn, IO[ 32 ], Sloan, T[ 44 ], Slominski, W[ 23 ], Smiljanic, I[ 7 ], Smith, WH[ 53 ], Sola, Solano, A[, 83, Soloviev, Y[ 58 ], Son, D[ 24 ], Sopicki, P[ 21 ], Sorokin, Sosnovtsev, V[ 59 ], South, D[ 26 ], Spaskov, V[ 27 ], Specka, A[ 66 ], Spiridonov, A[, 34, 57, ], Stadie, H[ 33 ], Stanco, L[ 64 ], Staykova, Z[ 34 ], Steder, M[ 34 ], Stella, B[, 73, Stern, A[ 79 ], Stewart, TP[ 86 ], Stifutkin, A[ 59 ], Stoicea, G[ 1 ], Stopa, P[ 21 ], Straumann, U[ 99 ], Suchkov, S[ 59 ], Sunar, D[, 14, Susinno, G[, 19, Suszycki, L[ 22 ], Sykora, Sztuk, J[ 33 ], Szuba, D[, 34, 108, ], J[, 34, 109, ], Tapper, AD[ 48 ], Tassi, E[, 19, Tchoulakov, V[ 27 ], Terron, J[ 54 ], Theedt, T[ 34 ], Thompson, G[ 47 ], Thompson, PD[ 9 ], Tiecke, H[, 4, Tokushuku, K[ 87 ], Toll, T[ 33 ], Tomasz, F[ 41 ], Tomaszewska, J[ 34 ], Tran, TH[ 62 ], Traynor, D[ 47 ], Trinh, TN[ 55 ], Truol, P[ 99 ], Tsakov, I[ 78 ], Tseepeldorj, B[, 88, 106, ], Tsurugai, T[ 95 ], Turcato, M[ 33 ], Turnau, J[ 21 ], Tymieniecka, T[ 92 ], Urban, K[ 37 ], Uribe Estrada, C[ 54 ], Valkarovha, A[ 71 ], Vallee, C[ 55 ], Van, Mechelen, Trevino, AV[ 34 ], Vazdik, Y[ 58 ], Vazquez, M[, 4, 5 ], Verbytskyi, A[, 39, Vinokurova, S[ 34 ], Vlasov, NN[ 30 ], Volchinski, V[ 94 ], Volynets, von den Driesch, M[ 34 ], Walczak, R[ 63 ], Abdullah, WATW[ 42 ], Wegener, D[ 26 ], Whitmore, JJ[ 89 ], Whyte, J[ 96 ], Wiggers, L[, 4, 5 ], Wing, M[, 46, 33, ], Wissing, C[ 34 ], Wlasenko, M[ 12 ], Wolf, G[ 34 ], Wolfe, H[ 53 ], Wrona, K[ 34 ], Wunsch, E[ 34 ], Yagues Molina, AG[ 34 ], Yamada, S[ 87 ], Yamazaki, Y[ 87 ], Yoshida, R[ 6 ], Youngman, C[ 34 ], Zacek, J[ 71 ], Zalesak, J[ 70 ], Zarnecki, AF[ 91 ], Zawiejski, L[ 21 ], Zeuner, W[ 34 ], Zhang, Z[ 62 ], Zhautykov, BO[ 3 ], Zhokin, A[ 57 ], Zhou, C[ 56 ], Zichichi, Zimmermann, T[ 98 ], Zohrabyan, H[ 94 ], Zolko, Zomer, F[ 62 ], Zotkin, DS[ 60 ], Zus, R., Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), H1, ZEUS, H1 Collaboration, ZEUS Collaboration, F.D. AARON, H. ABRAMOWICZ, I. ABT, L. ADAMCZYK, M. ADAMUS, M. ALDAYA MARTIN, C. ALEXA, K. ALIMUJIANG, V. ANDREEV, S. ANTONELLI, P. ANTONIOLI, A. ANTONOV, B. ANTUNOVIC, M. ARNEODO, A. ASMONE, V. AUSHEV, O. BACHYNSKA, S. BACKOVIC, A. BAGHDASARYAN, A. BAMBERGER, A.N. BARAKBAEV, G. BARBAGLI, G. BARI, F. BARREIRO, E. BARRELET, W. BARTEL, D. BARTSCH, M. BASILE, K. BEGZSUREN, O. BEHNKE, J. BEHR, U. BEHRENS, L. BELLAGAMBA, A. BELOUSOV, A. BERTOLIN, S. BHADRA, M. BINDI, J.C. BIZOT, C. BLOHM, T. BOLD, E.G. BOOS, M. BORODIN, K. BORRAS, D. BOSCHERINI, D. BOT, V. BOUDRY, S.K. BOUTLE, I. BOZOVIC-JELISAVCIC, J. BRACINIK, G. BRANDT, M. BRINKMANN, V. BRISSON, I. BROCK, E. BROWNSON, R. BRUGNERA, N. BRUMMER, D. BRUNCKO, A. BRUNI, G. BRUNI, B. BRZOZOWSKA, A. BUNYATYAN, G. BUSCHHORN, P.J. BUSSEY, J.M. BUTTERWORTH, B. BYLSMA, L. BYSTRITSKAYA, A. CALDWELL, A.J. CAMPBELL, K.B. CANTUN AVILA, M. CAPUA, R. CARLIN, F. CASSOL-BRUNNER, C.D. CATTERALL, K. CERNY, V. CERNY, S. CHEKANOV, V. CHEKELIAN, A. CHOLEWA, J. CHWASTOWSKI, J. CIBOROWSKI, R. CIESIELSKI, L. CIFARELLI, F. CINDOLO, A. CONTIN, J.G. CONTRERAS, A.M. COOPER-SARKAR, N. COPPOLA, M. CORRADI, F. CORRIVEAU, M. COSTA, J.A. COUGHLAN, G. COZZIKA, J. CVACH, G. D’AGOSTINI, J.B. DAINTON, F. DAL CORSO, K. DAUM, M. DEAK, Y. DE BOER, J. DE FAVEREAU, B. DELCOURT, M. DEL DEGAN, J. DEL PESO, J. DELVAX, R.K. DEMENTIEV, S. DE PASQUALE, M. DERRICK, R.C.E. DEVENISH, E.A. DE WOLF, C. DIACONU, D. DOBUR, V. DODONOV, B.A. DOLGOSHEIN, A. DOSSANOV, A.T. DOYLE, V. DRUGAKOV, A. DUBAK, L.S. DURKIN, S. DUSINI, G. ECKERLIN, V. EFREMENKO, S. EGLI, Y. EISENBERG, A. ELISEEV, E. ELSEN, P.F. ERMOLOV, A. ESKREYS, A. FALKIEWICZ, S. FANG, L. FAVART, S. FAZIO, A. FEDOTOV, R. FELST, J. FELTESSE, J. FERENCEI, J. FERRANDO, M.I. FERRERO, J. FIGIEL, D.J. FISCHER, M. FLEISCHER, A. FOMENKO, M. FORREST, B. FOSTER, S. FOURLETOV, E. GABATHULER, A. GALAS, E. GALLO, A. GARFAGNINI, J. GAYLER, A. GEISER, S. GHAZARYAN, I. GIALAS, L.K. GLADILIN, D. GLADKOV, C. GLASMAN, A. GLAZOV, I. GLUSHKOV, L. GOERLICH, N. GOGITIDZE, YU.A. GOLUBKOV, P. GOTTLICHER, M. GOUZEVITCH, C. GRAB, I. GRABOWSKA- BOLD, J. GREBENYUK, T. GREENSHAW, I. GREGOR, B.R. GRELL, G. GRIGORESCU, G. GRINDHAMMER, G. GRZELAK, C. GWENLAN, T. HAAS, S. HABIB, D. HAIDT, W. HAIN, R. HAMATSU, J.C. HART, H. HARTMANN, G. HARTNER, C. HELEBRANT, R.C.W. HENDERSON, E. HENNEKEMPER, H. HENSCHEL, M. HERBST, G. HERRERA, M. HILDEBRANDT, E. HILGER, K.H. HILLER, D. HOCHMAN, D. HOFFMANN, U. HOLM, R. HORI, R. HORISBERGER, K. HORTON, T. HREUS, A. HUTTMANN, G. IACOBUCCI, Z.A. IBRAHIM, Y. IGA, R. INGBIR, M. ISHITSUKA, M. JACQUET, H.P. JAKOB, M.E. JANSSEN, X. JANSSEN, F. JANUSCHEK, M. JIMENEZ, T.W. JONES, L. JONSSON, A.W. JUNG, H. JUNG, M. JUNGST, I. KADENKO, B. KAHLE, B. KAMALUDDIN, S. KANANOV, T. KANNO, M. KAPICHINE, U. KARSHON, F. KARSTENS, I.I. KATKOV, J. KATZY, M. KAUR, P. KAUR, I.R. KENYON, A. KERAMIDAS, L.A. KHEIN, C. KIESLING, J.Y. KIM, D. KISIELEWSKA, S. KITAMURA, R. KLANNER, M. KLEIN, U. KLEIN, C. KLEINWORT, T. KLUGE, A. KNUTSSON, E. KOFFEMAN, R. KOGLER, D. KOLLAR, P. KOOIJMAN, I.A. KORZHAVINA, P. KOSTKA, A. KOTANSKI, U. KOTZ, H. KOWALSKI, M. KRAEMER, K. KRASTEV, J. KRETZSCHMAR, A. KROPIVNITSKAYA, K. KRUGER, P. KULINSKI, O. KUPRASH, K. KUTAK, M. KUZE, V.A. KUZMIN, M.P.J. LANDON, W. LANGE, G. LASTOVICKA-MEDIN, P. LAYCOCK, A. LEBEDEV, A. LEE, G. LEIBENGUTH, V. LENDERMANN, B.B. LEVCHENKO, S. LEVONIAN, A. LEVY, G. LI, V. LIBOV, S. LIMENTANI, T.Y. LING, K. LIPKA, A. LIPTAJ, M. LISOVYI, B. LIST, J. LIST, E. LOBODZINSKA, W. LOHMANN, B. LOHR, E. LOHRMANN, J.H. LOIZIDES, N. LOKTIONOVA, K.R. LONG, A. LONGHIN, D. LONTKOVSKYI, R. LOPEZ-FERNANDEZ, V. LUBIMOV, J. LUKASIK, O.YU. LUKINA, P. LUZNIAK, L. LYTKIN, J. MAEDA, S. MAGILL, A. MAKANKINE, I. MAKARENKO, E. MALINOVSKI, J. MALKA, R. MANKEL, P. MARAGE, A. MARGOTTI, G. MARINI, LL. MARTI, J.F. MARTIN, H.U. MARTYN, A. MASTROBERARDINO, T. MATSUMOTO, M.C.K. MATTINGLY, S.J. MAXFIELD, A. MEHTA, I.A. MELZER-PELLMANN, A.B. MEYER, H. MEYER, J. MEYER, V. MICHELS, S. MIGLIORANZI, S. MIKOCKI, I. MILCEWICZ-MIKA, F. MOHAMAD IDRIS, V. MONACO, A. MONTANARI, F. MOREAU, A. MOROZOV, J.D. MORRIS, J.V. MORRIS, M.U. MOZER, M. MUDRINIC, K. MULLER, P. MURIN, B. MUSGRAVE, K. NAGANO, T. NAMSOO, R. NANIA, TH. NAUMANN, P.R. NEWMAN, D. NICHOLASS, C. NIEBUHR, A. NIGRO, A. NIKIFOROV, Y. NING, U. NOOR, D. NOTZ, G. NOWAK, K. NOWAK, R.J. NOWAK, M. NOZICKA, A.E. NUNCIO-QUIROZ, B.Y. OH, N. OKAZAKI, K. OLIVER, B. OLIVIER, K. OLKIEWICZ, J.E. OLSSON, S. OSMAN, O. OTA, D. OZEROV, V. PALICHIK, I. PANAGOULIAS, M. PANDUROVIC, TH. PAPADOPOULOU, K. PAPAGEORGIU, A. PARENTI, C. PASCAUD, G.D. PATEL, E. PAUL, J.M. PAWLAK, B. PAWLIK, O. PEJCHAL, P.G. PELFER, A. PELLEGRINO, E. PEREZ, W. PERLANSKI, H. PERREY, A. PETRUKHIN, I. PICURIC, S. PIEC, K. PIOTRZKOWSKI, D. PITZL, R. PLACAKYTHE, P. PLUCINSKI, B. POKORNY, N.S. POKROVSKIY, R. POLIFKA, A. POLINI, B. POVH, T. PREDA, A.S. PROSKURYAKOV, M. PRZYBYCIEN, V. RADESCU, A.J. RAHMAT, N. RAICEVIC, A. RASPIAREZA, A. RAVAL, T. RAVDANDORJ, D.D. REEDER, P. REIMER, B. REISERT, Z. REN, J. REPOND, Y.D. RI, E. RIZVI, A. ROBERTSON, P. ROBMANN, B. ROLAND, P. ROLOFF, E. RON, R. ROOSEN, A. ROSTOVTSEV, M. ROTARU, I. RUBINSKY, J.E. RUIZ TABASCO, Z. RURIKOVA, S. RUSAKOV, M. RUSPA, R. SACCHI, D. SALEK, U. SAMSON, D.P.C. SANKEY, G. SARTORELLI, M. SAUTER, E. SAUVAN, A.A. SAVIN, D.H. SAXON, M. SCHIOPPA, S. SCHLENSTEDT, P. SCHLEPER, W.B. SCHMIDKE, S. SCHMITT, U. SCHNEEKLOTH, L. SCHOEFFEL, V. SCHONBERG, A. SCHONING, T. SCHORNER-SADENIUS, H.C. SCHULTZ-COULON, J. SCHWARTZ, F. SCIULLI, F. SEFKOW, R.N. SHAW-WEST, L.M. SHCHEGLOVA, R. SHEHZADI, S. SHIMIZU, L.N. SHTARKOV, S. SHUSHKEVICH, I. SINGH, I.O. SKILLICORN, T. SLOAN, W. SLOMINSKI, I. SMILJANIC, W.H. SMITH, V. SOLA, A. SOLANO, Y. SOLOVIEV, D. SON, P. SOPICKI, IU. SOROKIN, V. SOSNOVTSEV, D. SOUTH, V. SPASKOV, A. SPECKA, A. SPIRIDONOV, H. STADIE, L. STANCO, Z. STAYKOVA, M. STEDER, B. STELLA, A. STERN, T.P. STEWART, A. STIFUTKIN, G. STOICEA, P. STOPA, U. STRAUMANN, S. SUCHKOV, D. SUNAR, G. SUSINNO, L. SUSZYCKI, T. SYKORA, J. SZTUK, D. SZUBA, J. SZUBA, A.D. TAPPER, E. TASSI, V. TCHOULAKOV, J. TERRON, T. THEEDT, G. THOMPSON, P.D. THOMPSON, H. TIECKE, K. TOKUSHUKU, T. TOLL, F. TOMASZ, J. TOMASZEWSKA, T.H. TRAN, D. TRAYNOR, T.N. TRINH, P. TRUOL, I. TSAKOV, B. TSEEPELDORJ, T. TSURUGAI, M. TURCATO, J. TURNAU, T. TYMIENIECKA, K. URBAN, C. URIBE-ESTRADA, A. VALKAROVHA, C. VALLEE, P. VAN MECHELEN, A. VARGAS TREVINO, Y. VAZDIK, M. VAZQUEZ, A. VERBYTSKYI, S. VINOKUROVA, N.N. VLASOV, V. VOLCHINSKI, O. VOLYNETS, M. VON DEN DRIESCH, R. WALCZAK, W.A.T. WAN ABDULLAH, D. WEGENER, J.J. WHITMORE, J. WHYTE, L. WIGGERS, M. WING, CH. WISSING, M. WLASENKO, G. WOLF, H. WOLFE, K. WRONA, E. WUNSCH, A.G. YAGUES-MOLINA, S. YAMADA, Y. YAMAZAKI, R. YOSHIDA, C. YOUNGMAN, J. ZACEK, J. ZALESAK, A.F. ZARNECKI, L. ZAWIEJSKI, W. ZEUNER, Z. ZHANG, B.O. ZHAUTYKOV, A. ZHOKIN, C. ZHOU, A. ZICHICHI, T. ZIMMERMANN, H. ZOHRABYAN, M. ZOLKO, F. ZOMER, D.S. ZOTKIN, R. ZUS, Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Zeus (IHEF, IoP, FNWI), and (ukupan broj autora: 552)

Subjects
Nuclear and High Energy Physics, Particle physics, Lepton-Nucleon Scattering, HERA, Scalar (mathematics), FOS: Physical sciences, 01 natural sciences, 7. Clean energy, High Energy Physics - Experiment, Standard Model, Nuclear physics, High Energy Physics - Experiment (hep-ex), High Energy Physics, ZEUS Collaboration, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], ddc:530, 010306 general physics, Nuclear Experiment, Physics, Muon, Luminosity (scattering theory), ZEUS (particle detector), 010308 nuclear & particles physics, lepton-nucleon scattering, Phase space, High Energy Physics::Experiment, Lepton
Abstract

Events with at least two high transverse momentum leptons (electrons or muons) are studied using the H1 and ZEUS detectors at HERA with an integrated luminosity of 0.94 fb^{-1}. The observed numbers of events are in general agreement with the Standard Model predictions. Seven di- and tri-lepton events are observed in e^+p collision data with a scalar sum of the lepton transverse momenta above 100 GeV while 1.94+-0.17 events are expected. Such events are not observed in e^-p collisions for which 1.19+-0.12 are predicted. Total visible and differential di-electron and di-muon photoproduction cross sections are extracted in a restricted phase space dominated by photon-photon collisions., Comment: 18 pages, 3 figures, revised version with small textual changes

Published
2009

Catalog

Books, media, physical & digital resources
See catalog results