Measurement of prompt photon cross sections in photoproduction at HERA

A. Aktas, V. Andreev, T. Anthonis, A. Asmone, A. Babaev, S. Backovic, J. Bähr, P. Baranov, E. Barrelet, W. Bartel, S. Baumgartner, J. Becker, M. Beckingham, O. Behnke, O. Behrendt, A. Belousov, Ch Berger, N. Berger, T. Berndt, J. C. Bizot & 292 others J. Böhme, M. O. Boenig, V. Boudry, J. Bracinik, V. Brisson, H. B. Bröker, D. P. Brown, D. Bruncko, F. W. Büsser, A. Bunyatyan, G. Buschhorn, L. Bystritskaya, A. J. Campbell, S. Caron, F. Cassol-Brunner, K. Cerny, V. Chekelian, C. Collard, J. G. Contreras, Y. R. Coppens, J. A. Coughlan, B. E. Cox, G. Cozzika, J. Cvach, J. B. Dainton, W. D. Dau, K. Daum, B. Delcourt, R. Demirchyan, A. De Roeck, K. Desch, E. A. De Wolf, C. Diaconu, J. Dingfelder, V. Dodonov, A. Dubak, C. Duprel, G. Eckerlin, V. Efremenko, S. Egli, R. Eichler, F. Eisele, M. Ellerbrock, E. Elsen, M. Erdmann, W. Erdmann, P. J.W. Faulkner, L. Favart, A. Fedotov, R. Felst, J. Ferencei, M. Fleischer, P. Fleischmann, Y. H. Fleming, G. Flucke, G. Flügge, A. Fomenko, I. Foresti, J. Formánek, G. Franke, G. Frising, E. Gabathuler, K. Gabathuler, E. Garutti, J. Garvey, J. Gayler, R. Gerhards, C. Gerlich, S. Ghazaryan, L. Goerlich, N. Gogitidze, S. Gorbounov, C. Grab, H. Grässler, T. Greenshaw, M. Gregori, G. Grindhammer, C. Gwilliam, D. Haidt, L. Hajduk, J. Haller, M. Hansson, G. Heinzelmann, R. C.W. Henderson, H. Henschel, O. Henshaw, R. Heremans, G. Herrera, I. Herynek, R. D. Heuer, M. Hildebrandt, K. H. Hiller, J. Hladký, P. Höting, D. Hoffmann, R. Horisberger, A. Hovhannisyan, M. Ibbotson, M. Ismail, M. Jacquet, L. Janauschek, X. Janssen, V. Jemanov, L. Jönsson, D. P. Johnson, H. Jung, D. Kant, M. Kapichine, M. Karlsson, J. Katzy, N. Keller, J. Kennedy, I. R. Kenyon, C. Kiesling, M. Klein, C. Kleinwort, T. Kluge, G. Knies, A. Knutsson, B. Koblitz, V. Korbel, P. Kostka, R. Koutouev, A. Kropivnitskaya, J. Kroseberg, J. Kückens, T. Kuhr, M. P.J. Landon, W. Lange, T. Laštovička, P. Laycock, A. Lebedev, B. Leißner, R. Lemrani, V. Lendermann, S. Levonian, L. Lindfeld, K. Lipka, B. List, E. Lobodzinska, N. Loktionova, R. Lopez-Fernandez, V. Lubimov, H. Lueders, D. Lüke, T. Lux, L. Lytkin, A. Makankine, N. Malden, E. Malinovski, S. Mangano, P. Marage, J. Marks, R. Marshall, M. Martisikova, H. U. Martyn, S. J. Maxfield, D. Meer, A. Mehta, K. Meier, A. B. Meyer, H. Meyer, J. Meyer, S. Michine, S. Mikocki, I. Milcewicz-Mika, D. Milstead, A. Mohamed, F. Moreau, A. Morozov, I. Morozov, J. V. Morris, M. U. Mozer, K. Müller, P. Murín, V. Nagovizin, B. Naroska, J. Naumann, Th Naumann, P. R. Newman, C. Niebuhr, A. Nikiforov, D. Nikitin, G. Nowak, M. Nozicka, R. Oganezov, B. Olivier, J. E. Olsson, G. Ossoskov, D. Ozerov, C. Pascaud, G. D. Patel, M. Peez, E. Perez, A. Perieanu, A. Petrukhin, D. Pitzl, R. Plačakyte, R. Pöschl, B. Portheault, B. Povh, N. Raicevic, Z. Ratiani, P. Reimer, B. Reisert, A. Rimmer, C. Risler, E. Rizvi, P. Robmann, B. Roland, R. Roosen, A. Rostovtsev, Z. Rurikova, S. Rusakov, K. Rybicki, D. P.C. Sankey, E. Sauvan, S. Schätzel, J. Scheins, F. P. Schilling, P. Schleper, S. Schmidt, S. Schmitt, M. Schneider, L. Schoeffel, A. Schöning, V. Schröder, H. C. Schultz-Coulon, C. Schwanenberger, K. Sedlák, F. Sefkow, I. Sheviakov, L. N. Shtarkov, Y. Sirois, T. Sloan, P. Smirnov, Y. Soloviev, D. South, V. Spaskov, A. Specka, H. Spitzer, R. Stamen, B. Stella, J. Stiewe, I. Strauch, U. Straumann, V. Tchoulakov, G. Thompson, P. D. Thompson, F. Tomasz, D. Traynor, P. Truöl, G. Tsipolitis, I. Tsurin, J. Turnau, E. Tzamariudaki, A. Uraev, M. Urban, A. Usik, D. Utkin, S. Valkár, A. Valkárová, C. Vallée, P. Van Mechelen, A. Vargas Trevino, Y. Vazdik, C. Veelken, A. Vest, S. Vinokurova, V. Volchinski, K. Wacker, J. Wagner, G. Weber, R. Weber, D. Wegener, C. Werner, N. Werner, M. Wessels, B. Wessling, G. G. Winter, Ch Wissing, E. E. Woehrling, R. Wolf, E. Wünsch, S. Xella, W. Yan, J. Žáček, J. Zálešák, Z. Zhang, A. Zhokin, H. Zohrabyan, F. Zomer

Research output: Contribution to journalArticle

50 Citations (Scopus)

Abstract

Results are presented on the photoproduction of isolated prompt photons, inclusively and associated with jets, in the γp center of mass energy range 142 < W < 266 GeV. The cross sections are measured for the transverse momentum range of the photons 5 < ET γ < 10 GeV and for associated jets with ET jet > 4.5 GeV. They are measured differentially as a function of ET γ, ET jet, the pseudorapidities ηγ and ηjet and estimators of the momentum fractions xγ and xp of the incident photon and proton carried by the constituents participating in the hard process. In order to further investigate the underlying dynamics, the angular correlation between the prompt photon and the jet in the transverse plane is studied. Predictions by perturbative QCD calculations in next to leading order are about 30% below the inclusive prompt photon data after corrections for hadronisation and multiple interactions, but are in reasonable agreement with the results for prompt photons associated with jets. Comparisons with the predictions of the event generators PYTHIA and HERWIG are also presented.

Original languageEnglish
Pages (from-to)437-445
Number of pages9
JournalEuropean Physical Journal C
Volume38
Issue number4
DOIs
Publication statusPublished - Jan 2005

Fingerprint

photoproduction
Photons
cross sections
photons
predictions
angular correlation
estimators
center of mass
Momentum
Protons
generators
quantum chromodynamics
momentum
protons
interactions
energy

ASJC Scopus subject areas

  • Engineering (miscellaneous)
  • Physics and Astronomy (miscellaneous)

Cite this

Aktas, A., Andreev, V., Anthonis, T., Asmone, A., Babaev, A., Backovic, S., ... Zomer, F. (2005). Measurement of prompt photon cross sections in photoproduction at HERA. European Physical Journal C, 38(4), 437-445. https://doi.org/10.1140/epjc/s2004-02085-x

Measurement of prompt photon cross sections in photoproduction at HERA. / Aktas, A.; Andreev, V.; Anthonis, T.; Asmone, A.; Babaev, A.; Backovic, S.; Bähr, J.; Baranov, P.; Barrelet, E.; Bartel, W.; Baumgartner, S.; Becker, J.; Beckingham, M.; Behnke, O.; Behrendt, O.; Belousov, A.; Berger, Ch; Berger, N.; Berndt, T.; Bizot, J. C.; Böhme, J.; Boenig, M. O.; Boudry, V.; Bracinik, J.; Brisson, V.; Bröker, H. B.; Brown, D. P.; Bruncko, D.; Büsser, F. W.; Bunyatyan, A.; Buschhorn, G.; Bystritskaya, L.; Campbell, A. J.; Caron, S.; Cassol-Brunner, F.; Cerny, K.; Chekelian, V.; Collard, C.; Contreras, J. G.; Coppens, Y. R.; Coughlan, J. A.; Cox, B. E.; Cozzika, G.; Cvach, J.; Dainton, J. B.; Dau, W. D.; Daum, K.; Delcourt, B.; Demirchyan, R.; De Roeck, A.; Desch, K.; De Wolf, E. A.; Diaconu, C.; Dingfelder, J.; Dodonov, V.; Dubak, A.; Duprel, C.; Eckerlin, G.; Efremenko, V.; Egli, S.; Eichler, R.; Eisele, F.; Ellerbrock, M.; Elsen, E.; Erdmann, M.; Erdmann, W.; Faulkner, P. J.W.; Favart, L.; Fedotov, A.; Felst, R.; Ferencei, J.; Fleischer, M.; Fleischmann, P.; Fleming, Y. H.; Flucke, G.; Flügge, G.; Fomenko, A.; Foresti, I.; Formánek, J.; Franke, G.; Frising, G.; Gabathuler, E.; Gabathuler, K.; Garutti, E.; Garvey, J.; Gayler, J.; Gerhards, R.; Gerlich, C.; Ghazaryan, S.; Goerlich, L.; Gogitidze, N.; Gorbounov, S.; Grab, C.; Grässler, H.; Greenshaw, T.; Gregori, M.; Grindhammer, G.; Gwilliam, C.; Haidt, D.; Hajduk, L.; Haller, J.; Hansson, M.; Heinzelmann, G.; Henderson, R. C.W.; Henschel, H.; Henshaw, O.; Heremans, R.; Herrera, G.; Herynek, I.; Heuer, R. D.; Hildebrandt, M.; Hiller, K. H.; Hladký, J.; Höting, P.; Hoffmann, D.; Horisberger, R.; Hovhannisyan, A.; Ibbotson, M.; Ismail, M.; Jacquet, M.; Janauschek, L.; Janssen, X.; Jemanov, V.; Jönsson, L.; Johnson, D. P.; Jung, H.; Kant, D.; Kapichine, M.; Karlsson, M.; Katzy, J.; Keller, N.; Kennedy, J.; Kenyon, I. R.; Kiesling, C.; Klein, M.; Kleinwort, C.; Kluge, T.; Knies, G.; Knutsson, A.; Koblitz, B.; Korbel, V.; Kostka, P.; Koutouev, R.; Kropivnitskaya, A.; Kroseberg, J.; Kückens, J.; Kuhr, T.; Landon, M. P.J.; Lange, W.; Laštovička, T.; Laycock, P.; Lebedev, A.; Leißner, B.; Lemrani, R.; Lendermann, V.; Levonian, S.; Lindfeld, L.; Lipka, K.; List, B.; Lobodzinska, E.; Loktionova, N.; Lopez-Fernandez, R.; Lubimov, V.; Lueders, H.; Lüke, D.; Lux, T.; Lytkin, L.; Makankine, A.; Malden, N.; Malinovski, E.; Mangano, S.; Marage, P.; Marks, J.; Marshall, R.; Martisikova, M.; Martyn, H. U.; Maxfield, S. J.; Meer, D.; Mehta, A.; Meier, K.; Meyer, A. B.; Meyer, H.; Meyer, J.; Michine, S.; Mikocki, S.; Milcewicz-Mika, I.; Milstead, D.; Mohamed, A.; Moreau, F.; Morozov, A.; Morozov, I.; Morris, J. V.; Mozer, M. U.; Müller, K.; Murín, P.; Nagovizin, V.; Naroska, B.; Naumann, J.; Naumann, Th; Newman, P. R.; Niebuhr, C.; Nikiforov, A.; Nikitin, D.; Nowak, G.; Nozicka, M.; Oganezov, R.; Olivier, B.; Olsson, J. E.; Ossoskov, G.; Ozerov, D.; Pascaud, C.; Patel, G. D.; Peez, M.; Perez, E.; Perieanu, A.; Petrukhin, A.; Pitzl, D.; Plačakyte, R.; Pöschl, R.; Portheault, B.; Povh, B.; Raicevic, N.; Ratiani, Z.; Reimer, P.; Reisert, B.; Rimmer, A.; Risler, C.; Rizvi, E.; Robmann, P.; Roland, B.; Roosen, R.; Rostovtsev, A.; Rurikova, Z.; Rusakov, S.; Rybicki, K.; Sankey, D. P.C.; Sauvan, E.; Schätzel, S.; Scheins, J.; Schilling, F. P.; Schleper, P.; Schmidt, S.; Schmitt, S.; Schneider, M.; Schoeffel, L.; Schöning, A.; Schröder, V.; Schultz-Coulon, H. C.; Schwanenberger, C.; Sedlák, K.; Sefkow, F.; Sheviakov, I.; Shtarkov, L. N.; Sirois, Y.; Sloan, T.; Smirnov, P.; Soloviev, Y.; South, D.; Spaskov, V.; Specka, A.; Spitzer, H.; Stamen, R.; Stella, B.; Stiewe, J.; Strauch, I.; Straumann, U.; Tchoulakov, V.; Thompson, G.; Thompson, P. D.; Tomasz, F.; Traynor, D.; Truöl, P.; Tsipolitis, G.; Tsurin, I.; Turnau, J.; Tzamariudaki, E.; Uraev, A.; Urban, M.; Usik, A.; Utkin, D.; Valkár, S.; Valkárová, A.; Vallée, C.; Van Mechelen, P.; Vargas Trevino, A.; Vazdik, Y.; Veelken, C.; Vest, A.; Vinokurova, S.; Volchinski, V.; Wacker, K.; Wagner, J.; Weber, G.; Weber, R.; Wegener, D.; Werner, C.; Werner, N.; Wessels, M.; Wessling, B.; Winter, G. G.; Wissing, Ch; Woehrling, E. E.; Wolf, R.; Wünsch, E.; Xella, S.; Yan, W.; Žáček, J.; Zálešák, J.; Zhang, Z.; Zhokin, A.; Zohrabyan, H.; Zomer, F.

In: European Physical Journal C, Vol. 38, No. 4, 01.2005, p. 437-445.

Research output: Contribution to journalArticle

Aktas, A, Andreev, V, Anthonis, T, Asmone, A, Babaev, A, Backovic, S, Bähr, J, Baranov, P, Barrelet, E, Bartel, W, Baumgartner, S, Becker, J, Beckingham, M, Behnke, O, Behrendt, O, Belousov, A, Berger, C, Berger, N, Berndt, T, Bizot, JC, Böhme, J, Boenig, MO, Boudry, V, Bracinik, J, Brisson, V, Bröker, HB, Brown, DP, Bruncko, D, Büsser, FW, Bunyatyan, A, Buschhorn, G, Bystritskaya, L, Campbell, AJ, Caron, S, Cassol-Brunner, F, Cerny, K, Chekelian, V, Collard, C, Contreras, JG, Coppens, YR, Coughlan, JA, Cox, BE, Cozzika, G, Cvach, J, Dainton, JB, Dau, WD, Daum, K, Delcourt, B, Demirchyan, R, De Roeck, A, Desch, K, De Wolf, EA, Diaconu, C, Dingfelder, J, Dodonov, V, Dubak, A, Duprel, C, Eckerlin, G, Efremenko, V, Egli, S, Eichler, R, Eisele, F, Ellerbrock, M, Elsen, E, Erdmann, M, Erdmann, W, Faulkner, PJW, Favart, L, Fedotov, A, Felst, R, Ferencei, J, Fleischer, M, Fleischmann, P, Fleming, YH, Flucke, G, Flügge, G, Fomenko, A, Foresti, I, Formánek, J, Franke, G, Frising, G, Gabathuler, E, Gabathuler, K, Garutti, E, Garvey, J, Gayler, J, Gerhards, R, Gerlich, C, Ghazaryan, S, Goerlich, L, Gogitidze, N, Gorbounov, S, Grab, C, Grässler, H, Greenshaw, T, Gregori, M, Grindhammer, G, Gwilliam, C, Haidt, D, Hajduk, L, Haller, J, Hansson, M, Heinzelmann, G, Henderson, RCW, Henschel, H, Henshaw, O, Heremans, R, Herrera, G, Herynek, I, Heuer, RD, Hildebrandt, M, Hiller, KH, Hladký, J, Höting, P, Hoffmann, D, Horisberger, R, Hovhannisyan, A, Ibbotson, M, Ismail, M, Jacquet, M, Janauschek, L, Janssen, X, Jemanov, V, Jönsson, L, Johnson, DP, Jung, H, Kant, D, Kapichine, M, Karlsson, M, Katzy, J, Keller, N, Kennedy, J, Kenyon, IR, Kiesling, C, Klein, M, Kleinwort, C, Kluge, T, Knies, G, Knutsson, A, Koblitz, B, Korbel, V, Kostka, P, Koutouev, R, Kropivnitskaya, A, Kroseberg, J, Kückens, J, Kuhr, T, Landon, MPJ, Lange, W, Laštovička, T, Laycock, P, Lebedev, A, Leißner, B, Lemrani, R, Lendermann, V, Levonian, S, Lindfeld, L, Lipka, K, List, B, Lobodzinska, E, Loktionova, N, Lopez-Fernandez, R, Lubimov, V, Lueders, H, Lüke, D, Lux, T, Lytkin, L, Makankine, A, Malden, N, Malinovski, E, Mangano, S, Marage, P, Marks, J, Marshall, R, Martisikova, M, Martyn, HU, Maxfield, SJ, Meer, D, Mehta, A, Meier, K, Meyer, AB, Meyer, H, Meyer, J, Michine, S, Mikocki, S, Milcewicz-Mika, I, Milstead, D, Mohamed, A, Moreau, F, Morozov, A, Morozov, I, Morris, JV, Mozer, MU, Müller, K, Murín, P, Nagovizin, V, Naroska, B, Naumann, J, Naumann, T, Newman, PR, Niebuhr, C, Nikiforov, A, Nikitin, D, Nowak, G, Nozicka, M, Oganezov, R, Olivier, B, Olsson, JE, Ossoskov, G, Ozerov, D, Pascaud, C, Patel, GD, Peez, M, Perez, E, Perieanu, A, Petrukhin, A, Pitzl, D, Plačakyte, R, Pöschl, R, Portheault, B, Povh, B, Raicevic, N, Ratiani, Z, Reimer, P, Reisert, B, Rimmer, A, Risler, C, Rizvi, E, Robmann, P, Roland, B, Roosen, R, Rostovtsev, A, Rurikova, Z, Rusakov, S, Rybicki, K, Sankey, DPC, Sauvan, E, Schätzel, S, Scheins, J, Schilling, FP, Schleper, P, Schmidt, S, Schmitt, S, Schneider, M, Schoeffel, L, Schöning, A, Schröder, V, Schultz-Coulon, HC, Schwanenberger, C, Sedlák, K, Sefkow, F, Sheviakov, I, Shtarkov, LN, Sirois, Y, Sloan, T, Smirnov, P, Soloviev, Y, South, D, Spaskov, V, Specka, A, Spitzer, H, Stamen, R, Stella, B, Stiewe, J, Strauch, I, Straumann, U, Tchoulakov, V, Thompson, G, Thompson, PD, Tomasz, F, Traynor, D, Truöl, P, Tsipolitis, G, Tsurin, I, Turnau, J, Tzamariudaki, E, Uraev, A, Urban, M, Usik, A, Utkin, D, Valkár, S, Valkárová, A, Vallée, C, Van Mechelen, P, Vargas Trevino, A, Vazdik, Y, Veelken, C, Vest, A, Vinokurova, S, Volchinski, V, Wacker, K, Wagner, J, Weber, G, Weber, R, Wegener, D, Werner, C, Werner, N, Wessels, M, Wessling, B, Winter, GG, Wissing, C, Woehrling, EE, Wolf, R, Wünsch, E, Xella, S, Yan, W, Žáček, J, Zálešák, J, Zhang, Z, Zhokin, A, Zohrabyan, H & Zomer, F 2005, 'Measurement of prompt photon cross sections in photoproduction at HERA', European Physical Journal C, vol. 38, no. 4, pp. 437-445. https://doi.org/10.1140/epjc/s2004-02085-x
Aktas A, Andreev V, Anthonis T, Asmone A, Babaev A, Backovic S et al. Measurement of prompt photon cross sections in photoproduction at HERA. European Physical Journal C. 2005 Jan;38(4):437-445. https://doi.org/10.1140/epjc/s2004-02085-x
Aktas, A. ; Andreev, V. ; Anthonis, T. ; Asmone, A. ; Babaev, A. ; Backovic, S. ; Bähr, J. ; Baranov, P. ; Barrelet, E. ; Bartel, W. ; Baumgartner, S. ; Becker, J. ; Beckingham, M. ; Behnke, O. ; Behrendt, O. ; Belousov, A. ; Berger, Ch ; Berger, N. ; Berndt, T. ; Bizot, J. C. ; Böhme, J. ; Boenig, M. O. ; Boudry, V. ; Bracinik, J. ; Brisson, V. ; Bröker, H. B. ; Brown, D. P. ; Bruncko, D. ; Büsser, F. W. ; Bunyatyan, A. ; Buschhorn, G. ; Bystritskaya, L. ; Campbell, A. J. ; Caron, S. ; Cassol-Brunner, F. ; Cerny, K. ; Chekelian, V. ; Collard, C. ; Contreras, J. G. ; Coppens, Y. R. ; Coughlan, J. A. ; Cox, B. E. ; Cozzika, G. ; Cvach, J. ; Dainton, J. B. ; Dau, W. D. ; Daum, K. ; Delcourt, B. ; Demirchyan, R. ; De Roeck, A. ; Desch, K. ; De Wolf, E. A. ; Diaconu, C. ; Dingfelder, J. ; Dodonov, V. ; Dubak, A. ; Duprel, C. ; Eckerlin, G. ; Efremenko, V. ; Egli, S. ; Eichler, R. ; Eisele, F. ; Ellerbrock, M. ; Elsen, E. ; Erdmann, M. ; Erdmann, W. ; Faulkner, P. J.W. ; Favart, L. ; Fedotov, A. ; Felst, R. ; Ferencei, J. ; Fleischer, M. ; Fleischmann, P. ; Fleming, Y. H. ; Flucke, G. ; Flügge, G. ; Fomenko, A. ; Foresti, I. ; Formánek, J. ; Franke, G. ; Frising, G. ; Gabathuler, E. ; Gabathuler, K. ; Garutti, E. ; Garvey, J. ; Gayler, J. ; Gerhards, R. ; Gerlich, C. ; Ghazaryan, S. ; Goerlich, L. ; Gogitidze, N. ; Gorbounov, S. ; Grab, C. ; Grässler, H. ; Greenshaw, T. ; Gregori, M. ; Grindhammer, G. ; Gwilliam, C. ; Haidt, D. ; Hajduk, L. ; Haller, J. ; Hansson, M. ; Heinzelmann, G. ; Henderson, R. C.W. ; Henschel, H. ; Henshaw, O. ; Heremans, R. ; Herrera, G. ; Herynek, I. ; Heuer, R. D. ; Hildebrandt, M. ; Hiller, K. H. ; Hladký, J. ; Höting, P. ; Hoffmann, D. ; Horisberger, R. ; Hovhannisyan, A. ; Ibbotson, M. ; Ismail, M. ; Jacquet, M. ; Janauschek, L. ; Janssen, X. ; Jemanov, V. ; Jönsson, L. ; Johnson, D. P. ; Jung, H. ; Kant, D. ; Kapichine, M. ; Karlsson, M. ; Katzy, J. ; Keller, N. ; Kennedy, J. ; Kenyon, I. R. ; Kiesling, C. ; Klein, M. ; Kleinwort, C. ; Kluge, T. ; Knies, G. ; Knutsson, A. ; Koblitz, B. ; Korbel, V. ; Kostka, P. ; Koutouev, R. ; Kropivnitskaya, A. ; Kroseberg, J. ; Kückens, J. ; Kuhr, T. ; Landon, M. P.J. ; Lange, W. ; Laštovička, T. ; Laycock, P. ; Lebedev, A. ; Leißner, B. ; Lemrani, R. ; Lendermann, V. ; Levonian, S. ; Lindfeld, L. ; Lipka, K. ; List, B. ; Lobodzinska, E. ; Loktionova, N. ; Lopez-Fernandez, R. ; Lubimov, V. ; Lueders, H. ; Lüke, D. ; Lux, T. ; Lytkin, L. ; Makankine, A. ; Malden, N. ; Malinovski, E. ; Mangano, S. ; Marage, P. ; Marks, J. ; Marshall, R. ; Martisikova, M. ; Martyn, H. U. ; Maxfield, S. J. ; Meer, D. ; Mehta, A. ; Meier, K. ; Meyer, A. B. ; Meyer, H. ; Meyer, J. ; Michine, S. ; Mikocki, S. ; Milcewicz-Mika, I. ; Milstead, D. ; Mohamed, A. ; Moreau, F. ; Morozov, A. ; Morozov, I. ; Morris, J. V. ; Mozer, M. U. ; Müller, K. ; Murín, P. ; Nagovizin, V. ; Naroska, B. ; Naumann, J. ; Naumann, Th ; Newman, P. R. ; Niebuhr, C. ; Nikiforov, A. ; Nikitin, D. ; Nowak, G. ; Nozicka, M. ; Oganezov, R. ; Olivier, B. ; Olsson, J. E. ; Ossoskov, G. ; Ozerov, D. ; Pascaud, C. ; Patel, G. D. ; Peez, M. ; Perez, E. ; Perieanu, A. ; Petrukhin, A. ; Pitzl, D. ; Plačakyte, R. ; Pöschl, R. ; Portheault, B. ; Povh, B. ; Raicevic, N. ; Ratiani, Z. ; Reimer, P. ; Reisert, B. ; Rimmer, A. ; Risler, C. ; Rizvi, E. ; Robmann, P. ; Roland, B. ; Roosen, R. ; Rostovtsev, A. ; Rurikova, Z. ; Rusakov, S. ; Rybicki, K. ; Sankey, D. P.C. ; Sauvan, E. ; Schätzel, S. ; Scheins, J. ; Schilling, F. P. ; Schleper, P. ; Schmidt, S. ; Schmitt, S. ; Schneider, M. ; Schoeffel, L. ; Schöning, A. ; Schröder, V. ; Schultz-Coulon, H. C. ; Schwanenberger, C. ; Sedlák, K. ; Sefkow, F. ; Sheviakov, I. ; Shtarkov, L. N. ; Sirois, Y. ; Sloan, T. ; Smirnov, P. ; Soloviev, Y. ; South, D. ; Spaskov, V. ; Specka, A. ; Spitzer, H. ; Stamen, R. ; Stella, B. ; Stiewe, J. ; Strauch, I. ; Straumann, U. ; Tchoulakov, V. ; Thompson, G. ; Thompson, P. D. ; Tomasz, F. ; Traynor, D. ; Truöl, P. ; Tsipolitis, G. ; Tsurin, I. ; Turnau, J. ; Tzamariudaki, E. ; Uraev, A. ; Urban, M. ; Usik, A. ; Utkin, D. ; Valkár, S. ; Valkárová, A. ; Vallée, C. ; Van Mechelen, P. ; Vargas Trevino, A. ; Vazdik, Y. ; Veelken, C. ; Vest, A. ; Vinokurova, S. ; Volchinski, V. ; Wacker, K. ; Wagner, J. ; Weber, G. ; Weber, R. ; Wegener, D. ; Werner, C. ; Werner, N. ; Wessels, M. ; Wessling, B. ; Winter, G. G. ; Wissing, Ch ; Woehrling, E. E. ; Wolf, R. ; Wünsch, E. ; Xella, S. ; Yan, W. ; Žáček, J. ; Zálešák, J. ; Zhang, Z. ; Zhokin, A. ; Zohrabyan, H. ; Zomer, F. / Measurement of prompt photon cross sections in photoproduction at HERA. In: European Physical Journal C. 2005 ; Vol. 38, No. 4. pp. 437-445.
@article{b9d6d37682c6443193b0977e560baf18,
title = "Measurement of prompt photon cross sections in photoproduction at HERA",
abstract = "Results are presented on the photoproduction of isolated prompt photons, inclusively and associated with jets, in the γp center of mass energy range 142 < W < 266 GeV. The cross sections are measured for the transverse momentum range of the photons 5 < ET γ < 10 GeV and for associated jets with ET jet > 4.5 GeV. They are measured differentially as a function of ET γ, ET jet, the pseudorapidities ηγ and ηjet and estimators of the momentum fractions xγ and xp of the incident photon and proton carried by the constituents participating in the hard process. In order to further investigate the underlying dynamics, the angular correlation between the prompt photon and the jet in the transverse plane is studied. Predictions by perturbative QCD calculations in next to leading order are about 30{\%} below the inclusive prompt photon data after corrections for hadronisation and multiple interactions, but are in reasonable agreement with the results for prompt photons associated with jets. Comparisons with the predictions of the event generators PYTHIA and HERWIG are also presented.",
author = "A. Aktas and V. Andreev and T. Anthonis and A. Asmone and A. Babaev and S. Backovic and J. B{\"a}hr and P. Baranov and E. Barrelet and W. Bartel and S. Baumgartner and J. Becker and M. Beckingham and O. Behnke and O. Behrendt and A. Belousov and Ch Berger and N. Berger and T. Berndt and Bizot, {J. C.} and J. B{\"o}hme and Boenig, {M. O.} and V. Boudry and J. Bracinik and V. Brisson and Br{\"o}ker, {H. B.} and Brown, {D. P.} and D. Bruncko and B{\"u}sser, {F. W.} and A. Bunyatyan and G. Buschhorn and L. Bystritskaya and Campbell, {A. J.} and S. Caron and F. Cassol-Brunner and K. Cerny and V. Chekelian and C. Collard and Contreras, {J. G.} and Coppens, {Y. R.} and Coughlan, {J. A.} and Cox, {B. E.} and G. Cozzika and J. Cvach and Dainton, {J. B.} and Dau, {W. D.} and K. Daum and B. Delcourt and R. Demirchyan and {De Roeck}, A. and K. Desch and {De Wolf}, {E. A.} and C. Diaconu and J. Dingfelder and V. Dodonov and A. Dubak and C. Duprel and G. Eckerlin and V. Efremenko and S. Egli and R. Eichler and F. Eisele and M. Ellerbrock and E. Elsen and M. Erdmann and W. Erdmann and Faulkner, {P. J.W.} and L. Favart and A. Fedotov and R. Felst and J. Ferencei and M. Fleischer and P. Fleischmann and Fleming, {Y. H.} and G. Flucke and G. Fl{\"u}gge and A. Fomenko and I. Foresti and J. Form{\'a}nek and G. Franke and G. Frising and E. Gabathuler and K. Gabathuler and E. Garutti and J. Garvey and J. Gayler and R. Gerhards and C. Gerlich and S. Ghazaryan and L. Goerlich and N. Gogitidze and S. Gorbounov and C. Grab and H. Gr{\"a}ssler and T. Greenshaw and M. Gregori and G. Grindhammer and C. Gwilliam and D. Haidt and L. Hajduk and J. Haller and M. Hansson and G. Heinzelmann and Henderson, {R. C.W.} and H. Henschel and O. Henshaw and R. Heremans and G. Herrera and I. Herynek and Heuer, {R. D.} and M. Hildebrandt and Hiller, {K. H.} and J. Hladk{\'y} and P. H{\"o}ting and D. Hoffmann and R. Horisberger and A. Hovhannisyan and M. Ibbotson and M. Ismail and M. Jacquet and L. Janauschek and X. Janssen and V. Jemanov and L. J{\"o}nsson and Johnson, {D. P.} and H. Jung and D. Kant and M. Kapichine and M. Karlsson and J. Katzy and N. Keller and J. Kennedy and Kenyon, {I. R.} and C. Kiesling and M. Klein and C. Kleinwort and T. Kluge and G. Knies and A. Knutsson and B. Koblitz and V. Korbel and P. Kostka and R. Koutouev and A. Kropivnitskaya and J. Kroseberg and J. K{\"u}ckens and T. Kuhr and Landon, {M. P.J.} and W. Lange and T. Laštovička and P. Laycock and A. Lebedev and B. Lei{\ss}ner and R. Lemrani and V. Lendermann and S. Levonian and L. Lindfeld and K. Lipka and B. List and E. Lobodzinska and N. Loktionova and R. Lopez-Fernandez and V. Lubimov and H. Lueders and D. L{\"u}ke and T. Lux and L. Lytkin and A. Makankine and N. Malden and E. Malinovski and S. Mangano and P. Marage and J. Marks and R. Marshall and M. Martisikova and Martyn, {H. U.} and Maxfield, {S. J.} and D. Meer and A. Mehta and K. Meier and Meyer, {A. B.} and H. Meyer and J. Meyer and S. Michine and S. Mikocki and I. Milcewicz-Mika and D. Milstead and A. Mohamed and F. Moreau and A. Morozov and I. Morozov and Morris, {J. V.} and Mozer, {M. U.} and K. M{\"u}ller and P. Mur{\'i}n and V. Nagovizin and B. Naroska and J. Naumann and Th Naumann and Newman, {P. R.} and C. Niebuhr and A. Nikiforov and D. Nikitin and G. Nowak and M. Nozicka and R. Oganezov and B. Olivier and Olsson, {J. E.} and G. Ossoskov and D. Ozerov and C. Pascaud and Patel, {G. D.} and M. Peez and E. Perez and A. Perieanu and A. Petrukhin and D. Pitzl and R. Plačakyte and R. P{\"o}schl and B. Portheault and B. Povh and N. Raicevic and Z. Ratiani and P. Reimer and B. Reisert and A. Rimmer and C. Risler and E. Rizvi and P. Robmann and B. Roland and R. Roosen and A. Rostovtsev and Z. Rurikova and S. Rusakov and K. Rybicki and Sankey, {D. P.C.} and E. Sauvan and S. Sch{\"a}tzel and J. Scheins and Schilling, {F. P.} and P. Schleper and S. Schmidt and S. Schmitt and M. Schneider and L. Schoeffel and A. Sch{\"o}ning and V. Schr{\"o}der and Schultz-Coulon, {H. C.} and C. Schwanenberger and K. Sedl{\'a}k and F. Sefkow and I. Sheviakov and Shtarkov, {L. N.} and Y. Sirois and T. Sloan and P. Smirnov and Y. Soloviev and D. South and V. Spaskov and A. Specka and H. Spitzer and R. Stamen and B. Stella and J. Stiewe and I. Strauch and U. Straumann and V. Tchoulakov and G. Thompson and Thompson, {P. D.} and F. Tomasz and D. Traynor and P. Tru{\"o}l and G. Tsipolitis and I. Tsurin and J. Turnau and E. Tzamariudaki and A. Uraev and M. Urban and A. Usik and D. Utkin and S. Valk{\'a}r and A. Valk{\'a}rov{\'a} and C. Vall{\'e}e and {Van Mechelen}, P. and {Vargas Trevino}, A. and Y. Vazdik and C. Veelken and A. Vest and S. Vinokurova and V. Volchinski and K. Wacker and J. Wagner and G. Weber and R. Weber and D. Wegener and C. Werner and N. Werner and M. Wessels and B. Wessling and Winter, {G. G.} and Ch Wissing and Woehrling, {E. E.} and R. Wolf and E. W{\"u}nsch and S. Xella and W. Yan and J. Ž{\'a}ček and J. Z{\'a}leš{\'a}k and Z. Zhang and A. Zhokin and H. Zohrabyan and F. Zomer",
year = "2005",
month = "1",
doi = "10.1140/epjc/s2004-02085-x",
language = "English",
volume = "38",
pages = "437--445",
journal = "European Physical Journal C",
issn = "1434-6044",
publisher = "Springer New York",
number = "4",

}

TY - JOUR

T1 - Measurement of prompt photon cross sections in photoproduction at HERA

AU - Aktas, A.

AU - Andreev, V.

AU - Anthonis, T.

AU - Asmone, A.

AU - Babaev, A.

AU - Backovic, S.

AU - Bähr, J.

AU - Baranov, P.

AU - Barrelet, E.

AU - Bartel, W.

AU - Baumgartner, S.

AU - Becker, J.

AU - Beckingham, M.

AU - Behnke, O.

AU - Behrendt, O.

AU - Belousov, A.

AU - Berger, Ch

AU - Berger, N.

AU - Berndt, T.

AU - Bizot, J. C.

AU - Böhme, J.

AU - Boenig, M. O.

AU - Boudry, V.

AU - Bracinik, J.

AU - Brisson, V.

AU - Bröker, H. B.

AU - Brown, D. P.

AU - Bruncko, D.

AU - Büsser, F. W.

AU - Bunyatyan, A.

AU - Buschhorn, G.

AU - Bystritskaya, L.

AU - Campbell, A. J.

AU - Caron, S.

AU - Cassol-Brunner, F.

AU - Cerny, K.

AU - Chekelian, V.

AU - Collard, C.

AU - Contreras, J. G.

AU - Coppens, Y. R.

AU - Coughlan, J. A.

AU - Cox, B. E.

AU - Cozzika, G.

AU - Cvach, J.

AU - Dainton, J. B.

AU - Dau, W. D.

AU - Daum, K.

AU - Delcourt, B.

AU - Demirchyan, R.

AU - De Roeck, A.

AU - Desch, K.

AU - De Wolf, E. A.

AU - Diaconu, C.

AU - Dingfelder, J.

AU - Dodonov, V.

AU - Dubak, A.

AU - Duprel, C.

AU - Eckerlin, G.

AU - Efremenko, V.

AU - Egli, S.

AU - Eichler, R.

AU - Eisele, F.

AU - Ellerbrock, M.

AU - Elsen, E.

AU - Erdmann, M.

AU - Erdmann, W.

AU - Faulkner, P. J.W.

AU - Favart, L.

AU - Fedotov, A.

AU - Felst, R.

AU - Ferencei, J.

AU - Fleischer, M.

AU - Fleischmann, P.

AU - Fleming, Y. H.

AU - Flucke, G.

AU - Flügge, G.

AU - Fomenko, A.

AU - Foresti, I.

AU - Formánek, J.

AU - Franke, G.

AU - Frising, G.

AU - Gabathuler, E.

AU - Gabathuler, K.

AU - Garutti, E.

AU - Garvey, J.

AU - Gayler, J.

AU - Gerhards, R.

AU - Gerlich, C.

AU - Ghazaryan, S.

AU - Goerlich, L.

AU - Gogitidze, N.

AU - Gorbounov, S.

AU - Grab, C.

AU - Grässler, H.

AU - Greenshaw, T.

AU - Gregori, M.

AU - Grindhammer, G.

AU - Gwilliam, C.

AU - Haidt, D.

AU - Hajduk, L.

AU - Haller, J.

AU - Hansson, M.

AU - Heinzelmann, G.

AU - Henderson, R. C.W.

AU - Henschel, H.

AU - Henshaw, O.

AU - Heremans, R.

AU - Herrera, G.

AU - Herynek, I.

AU - Heuer, R. D.

AU - Hildebrandt, M.

AU - Hiller, K. H.

AU - Hladký, J.

AU - Höting, P.

AU - Hoffmann, D.

AU - Horisberger, R.

AU - Hovhannisyan, A.

AU - Ibbotson, M.

AU - Ismail, M.

AU - Jacquet, M.

AU - Janauschek, L.

AU - Janssen, X.

AU - Jemanov, V.

AU - Jönsson, L.

AU - Johnson, D. P.

AU - Jung, H.

AU - Kant, D.

AU - Kapichine, M.

AU - Karlsson, M.

AU - Katzy, J.

AU - Keller, N.

AU - Kennedy, J.

AU - Kenyon, I. R.

AU - Kiesling, C.

AU - Klein, M.

AU - Kleinwort, C.

AU - Kluge, T.

AU - Knies, G.

AU - Knutsson, A.

AU - Koblitz, B.

AU - Korbel, V.

AU - Kostka, P.

AU - Koutouev, R.

AU - Kropivnitskaya, A.

AU - Kroseberg, J.

AU - Kückens, J.

AU - Kuhr, T.

AU - Landon, M. P.J.

AU - Lange, W.

AU - Laštovička, T.

AU - Laycock, P.

AU - Lebedev, A.

AU - Leißner, B.

AU - Lemrani, R.

AU - Lendermann, V.

AU - Levonian, S.

AU - Lindfeld, L.

AU - Lipka, K.

AU - List, B.

AU - Lobodzinska, E.

AU - Loktionova, N.

AU - Lopez-Fernandez, R.

AU - Lubimov, V.

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PY - 2005/1

Y1 - 2005/1

N2 - Results are presented on the photoproduction of isolated prompt photons, inclusively and associated with jets, in the γp center of mass energy range 142 < W < 266 GeV. The cross sections are measured for the transverse momentum range of the photons 5 < ET γ < 10 GeV and for associated jets with ET jet > 4.5 GeV. They are measured differentially as a function of ET γ, ET jet, the pseudorapidities ηγ and ηjet and estimators of the momentum fractions xγ and xp of the incident photon and proton carried by the constituents participating in the hard process. In order to further investigate the underlying dynamics, the angular correlation between the prompt photon and the jet in the transverse plane is studied. Predictions by perturbative QCD calculations in next to leading order are about 30% below the inclusive prompt photon data after corrections for hadronisation and multiple interactions, but are in reasonable agreement with the results for prompt photons associated with jets. Comparisons with the predictions of the event generators PYTHIA and HERWIG are also presented.

AB - Results are presented on the photoproduction of isolated prompt photons, inclusively and associated with jets, in the γp center of mass energy range 142 < W < 266 GeV. The cross sections are measured for the transverse momentum range of the photons 5 < ET γ < 10 GeV and for associated jets with ET jet > 4.5 GeV. They are measured differentially as a function of ET γ, ET jet, the pseudorapidities ηγ and ηjet and estimators of the momentum fractions xγ and xp of the incident photon and proton carried by the constituents participating in the hard process. In order to further investigate the underlying dynamics, the angular correlation between the prompt photon and the jet in the transverse plane is studied. Predictions by perturbative QCD calculations in next to leading order are about 30% below the inclusive prompt photon data after corrections for hadronisation and multiple interactions, but are in reasonable agreement with the results for prompt photons associated with jets. Comparisons with the predictions of the event generators PYTHIA and HERWIG are also presented.

UR - http://www.scopus.com/inward/record.url?scp=12744276072&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=12744276072&partnerID=8YFLogxK

U2 - 10.1140/epjc/s2004-02085-x

DO - 10.1140/epjc/s2004-02085-x

M3 - Article

VL - 38

SP - 437

EP - 445

JO - European Physical Journal C

JF - European Physical Journal C

SN - 1434-6044

IS - 4

ER -