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

Aaron, F. D.; Aktas, A.; Alexa, C.; Andreev, V.; Antunovic, B.; Aplin, S.; Asmone, A.; Astvatsatourov, A.; Backovic, S. and Baghdasaryan, A., et al. (2008) In European Physical Journal C. Particles and Fields 54(3). p.371-387
Abstract
The production of isolated photons in deep-inelastic scattering ep -> e gamma X is measured with the H1 detector at HERA. The measurement is performed in the kinematic range of negative four-momentum transfer squared 4 < Q(2)< 150 GeV2 and a mass of the hadronic system W-X > 50 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 < E-T(gamma)< 10 GeV and pseudorapidity range -1.2 <eta(gamma)< 1.8 is measured as a function of E-T(gamma), eta(gamma) and Q(2). Isolated photon cross sections are also measured for events with no jets or at least one hadronic jet. The measurements are compared with predictions... (More)
The production of isolated photons in deep-inelastic scattering ep -> e gamma X is measured with the H1 detector at HERA. The measurement is performed in the kinematic range of negative four-momentum transfer squared 4 < Q(2)< 150 GeV2 and a mass of the hadronic system W-X > 50 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 < E-T(gamma)< 10 GeV and pseudorapidity range -1.2 <eta(gamma)< 1.8 is measured as a function of E-T(gamma), eta(gamma) and Q(2). Isolated photon cross sections are also measured for events with no jets or at least one hadronic jet. The measurements are compared with predictions from Monte Carlo generators modelling the photon radiation from the quark and the electron lines, as well as with calculations at leading and next to leading order in the strong coupling. The predictions significantly underestimate the measured cross sections. (Less)
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European Physical Journal C. Particles and Fields
volume
54
issue
3
pages
371 - 387
publisher
Springer
external identifiers
  • wos:000254206800003
  • scopus:41249088200
ISSN
1434-6044
DOI
10.1140/epjc/s10052-008-0541-6
language
English
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yes
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54969fd5-8226-453a-a876-d44642eaf9b7 (old id 1207853)
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2008-08-27 09:38:12
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@article{54969fd5-8226-453a-a876-d44642eaf9b7,
  abstract     = {The production of isolated photons in deep-inelastic scattering ep -&gt; e gamma X is measured with the H1 detector at HERA. The measurement is performed in the kinematic range of negative four-momentum transfer squared 4 &lt; Q(2)&lt; 150 GeV2 and a mass of the hadronic system W-X &gt; 50 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 &lt; E-T(gamma)&lt; 10 GeV and pseudorapidity range -1.2 &lt;eta(gamma)&lt; 1.8 is measured as a function of E-T(gamma), eta(gamma) and Q(2). Isolated photon cross sections are also measured for events with no jets or at least one hadronic jet. The measurements are compared with predictions from Monte Carlo generators modelling the photon radiation from the quark and the electron lines, as well as with calculations at leading and next to leading order in the strong coupling. The predictions significantly underestimate the measured cross sections.},
  author       = {Aaron, F. D. and Aktas, A. and Alexa, C. and Andreev, V. and Antunovic, B. and Aplin, S. and Asmone, A. and Astvatsatourov, A. and Backovic, S. and Baghdasaryan, A. and Baranov, P. and Barreletl, E. and Barte, W. and Baudrand, S. and Beckingham, M. and Begzsuren, K. and Behnke, O. and Behrendt, O. and Belousov, A. and Berger, N. and Bizot, J. C. and Boenig, M. -O. and Boudry, V. and Bozovic-Jelisavcic, I. and Bracinik, J. and Brandt, G. and Brinkmann, M. and Brisson, V. and Bruncko, D. and Buesser, F. W. and Bunyatyan, A. and Buschhorn, G. and Bystritskaya, L. and Campbell, A. J. and Avila, K. B. Cantun and Cassol-Brunner, F. and Cerny, K. and Cerny, V. and Chekelian, V. and Cholewa, A. and Contreras, J. G. and Coughlan, J. A. and Cozzikao, G. and Cvach, J. and Dainton, J. B. and Daum, K. and Deak, M. and de Boer, Y. and Delcourt, B. and Del Degan, M. and Delvax, J. and De Roeck, A. and De Wolf, E. A. and Diaconu, C. and Dodonov, V. and Dubak, A. and Eckerlin, G. and Efremenko, V. and Egli, S. and Eichler, R. and Eisele, F. and Eliseev, A. and Elsen, E. and Essenov, S. and Falkiewicz, A. and Faulkner, P. J. W. and Favart, L. and Fedotov, A. and Felst, R. and Feltesse, J. and Ferencei, J. and Finke, L. and Fleischer, M. and Fomenko, A. and Franke, G. and Frisson, T. and Gabathuler, E. and Gayler, J. and Ghazaryan, S. and Ginzburgskaya, S. and Glazov, A. and Glushkov, I. and Goerlich, L. and Goettlich, M. and Gogitidze, N. and Gorbounov, S. and Gouzevitch, M. and Grab, C. and Greenshaw, T. and Grell, B. R. and Grindhammer, G. and Habib, S. and Haidt, D. and Hansson, Magnus and Heinzelmann, G. and Helebrant, C. and Henderson, R. C. W. and Henschel, H. and Herrera, G. and Hildebrandt, M. and Hiller, K. H. and Hoffmann, D. and Horisberger, R. and Hovhannisyan, A. and Hreus, T. and Jacquet, M. and Janssen, M. E. and Janssen, X. and Jemanov, V. and Jönsson, Leif and Johnson, D. P. and Jung, A. W. and Jung, H. and Kapichine, M. and Katzy, J. and Kenyon, I. R. and Kiesling, C. and Klein, M. and Kleinwort, C. and Klimkovich, T. and Kluge, T. and Knutsson, A. and Korbel, V. and Kostka, P. and Kraemer, M. and Krastev, K. and Kretzschmar, J. and Kropivnitskaya, A. and Krueger, K. and Landon, M. P. J. and Lange, W. and Lastovicka-Medin, G. and Laycock, P. and Lebedev, A. and Leibenguth, G. and Lendermann, V. and Levonian, S. and Li, G. and Lindfeld, L. and Lipka, K. and Liptaj, A. and List, B. and List, J. and Loktionova, N. and Lopez-Fernandez, R. and Lubimov, V. and Lucaci-Timoce, A. -I. and Lytkin, L. and Makankine, A. and Malinovski, E. and Marage, P. and Marti, L. and Martisikova, M. and Martyn, H. -U. and Maxfield, S. J. and Mehta, A. and Meier, K. and Meyer, A. B. and Meyer, H. and Meyer, H. and Meyer, J. and Michels, V. and Mikocki, S. and Milcewicz-Mika, I. and Mohamed, A. and Moreau, F. and Morozov, A. and Morris, J. V. and Mozer, M. U. and Mueller, K. and Murin, P. and Nankov, K. and Naroska, B. and Naumann, T. and Newman, P. R. and Niebuhr, C. and Nikiforov, A. and Nowak, G. and Nowak, K. and Nozicka, M. and Oganezov, R. and Olivier, B. and Olsson, J. E. and Osman, Sakar and Ozerov, D. and Palichik, V. and Panagoulias, I. and Pandurovic, M. and Papadopoulou, T. and Pascaud, C. and Patel, G. D. and Peng, H. and Perez, E. and Perez-Astudillo, D. and Perieanu, A. and Petrukhin, A. and Picuric, I. and Piec, S. and Pitzl, D. and Placakyte, R. and Polifka, R. and Povh, B. and Preda, T. and Prideaux, P. and Radescu, V. and Rahmat, A. J. and Raicevic, N. and Ravdandorj, T. and Reimer, P. and Risler, C. and Rizvi, E. and Robmann, P. and Roland, B. and Roosen, R. and Rostovtsev, A. and Rurikova, Z. and Rusakov, S. and Salek, D. and Salvaire, F. and Sankey, D. P. C. and Sauter, M. and Sauvan, E. and Schmidt, S. and Schmitt, S. and Schmitz, C. and Schoeffel, L. and Schoening, A. and Schultz-Coulon, H. -C. and Sefkow, F. and Shaw-West, R. N. and Sheviakov, I. and Shtarkov, L. N. and Sloan, T. and Smiljanic, I. and Smirnov, P. and Soloviev, Y. and South, D. and Spaskov, V. and Specka, A. and Staykova, Z. and Steder, M. and Stella, B. and Stiewe, J. and Straumann, U. and Sunar, D. and Sykora, T. and Tchoulakov, V. and Thompson, G. and Thompson, P. D. and Toll, T. and Tomasz, F. and Tran, T. H. and Traynor, D. and Trinh, T. N. and Truoel, P. and Tsakov, I. and Tseepeldorj, B. and Tsipolitis, G. and Tsurin, I. and Turnau, J. and Tzamariudaki, E. and Urban, K. and Utkin, D. and Valkarova, A. and Vallee, C. and Van Mechelen, P. and Trevino, A. Vargas and Vazdik, Y. and Vinokurova, S. and Volchinski, V. and Weber, G. and Weber, R. and Wegener, D. and Werner, C. and Wessels, M. and Wissing, C. and Wolf, R. and Wuensch, E. and Xella, S. and Yeganov, V. and Zacek, J. and Zalesak, J. and Zhang, Z. and Zhelezov, A. and Zhokin, A. and Zhu, Y. C. and Zimmermann, T. and Zohrabyan, H. and Zomer, F.},
  issn         = {1434-6044},
  language     = {eng},
  number       = {3},
  pages        = {371--387},
  publisher    = {Springer},
  series       = {European Physical Journal C. Particles and Fields},
  title        = {Measurement of isolated photon production in deep-inelastic scattering at HERA},
  url          = {http://dx.doi.org/10.1140/epjc/s10052-008-0541-6},
  volume       = {54},
  year         = {2008},
}