Measurement of photon production in the very forward direction in deep-inelastic scattering at HERA

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作者：
F. D. Aaron
C. Alexa
V. Andreev
S. Backovic
A. Baghdasaryan
S. Baghdasaryan
E. Barrelet
W. Bartel
K. Begzsuren
A. Belousov
P. Belov
J. C. Bizot
V. Boudry
I. Bozovic-Jelisavcic
J. Bracinik
G. Brandt
M. Brinkmann
V. Brisson
D. Britzger
D. Bruncko
A. Bunyatyan
G. Buschhorn
L. Bystritskaya
A. J. Campbell
K. B. Cantun Avila
F. Ceccopieri
K. Cerny
V. Cerny
V. Chekelian
J. G. Contreras
J. A. Coughlan
J. Cvach
J. B. Dainton
K. Daum
B. Delcourt
J. Delvax
E. A. De Wolf
C. Diaconu
M. Dobre
V. Dodonov
A. Dossanov
A. Dubak
G. Eckerlin
S. Egli
A. Eliseev
E. Elsen
L. Favart
A. Fedotov
R. Felst
J. Feltesse
机构：
[1] I. Physikalisches Institut der RWTH,Vinca Institute of Nuclear Sciences
[2] University of Belgrade,School of Physics and Astronomy
[3] University of Birmingham,Inter
[4] Brussels and Universiteit Antwerpen,University Institute for High Energies ULB
[5] National Institute for Physics and Nuclear Engineering (NIPNE),VUB
[6] Rutherford Appleton Laboratory,CEA
[7] Institute for Nuclear Physics,Institut für Experimentalphysik
[8] Institut für Physik,Physikalisches Institut
[9] TU Dortmund,Kirchhoff
[10] Joint Institute for Nuclear Research,Institut für Physik
[11] DSM/Irfu,Institute of Experimental Physics
[12] DESY,Department of Physics
[13] Universität Hamburg,Department of Physics
[14] Max-Planck-Institut für Kernphysik,Physics Department
[15] Universität Heidelberg,CPPM
[16] Universität Heidelberg,Departamento de Fisica Aplicada
[17] Slovak Academy of Sciences,Departamento de Fisica
[18] University of Lancaster,LAL
[19] University of Liverpool,LLR
[20] Queen Mary and Westfield College,LPNHE
[21] University of Lund,Faculty of Science
[22] Aix-Marseille Univ.,Institute of Physics
[23] CNRS/IN2P3,Faculty of Mathematics and Physics
[24] CINVESTAV,Fachbereich C
[25] CINVESTAV IPN,Institut für Teilchenphysik
[26] Institute for Theoretical and Experimental Physics,undefined
[27] Lebedev Physical Institute,undefined
[28] Max-Planck-Institut für Physik,undefined
[29] Université Paris-Sud,undefined
[30] CNRS/IN2P3,undefined
[31] Ecole Polytechnique,undefined
[32] CNRS/IN2P3,undefined
[33] Université Pierre et Marie Curie Paris 6,undefined
[34] Université Denis Diderot Paris 7,undefined
[35] CNRS/IN2P3,undefined
[36] University of Montenegro,undefined
[37] Academy of Sciences of the Czech Republic,undefined
[38] Charles University,undefined
[39] Dipartimento di Fisica Università di Roma Tre and INFN Roma 3,undefined
[40] Institute for Nuclear Research and Nuclear Energy,undefined
[41] Institute of Physics and Technology of the Mongolian Academy of Sciences,undefined
[42] Paul Scherrer Institut,undefined
[43] Universität Wuppertal,undefined
[44] Yerevan Physics Institute,undefined
[45] DESY,undefined
[46] ETH,undefined
[47] Physik-Institut der Universität Zürich,undefined
来源：
The European Physical Journal C | 2011年 / 71卷
关键词：
Monte Carlo; ZEUS Collaboration; Scattered Positron; Longitudinal Momentum Fraction; Colour Dipole Model;
D O I：
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摘要：
The production of photons at very small angles with respect to the proton beam direction is studied in deep-inelastic positron–proton scattering at HERA. The data are taken with the H1 detector in the years 2006 and 2007 and correspond to an integrated luminosity of 126 pb−1. The analysis covers the range of negative four momentum transfer squared at the positron vertex 6<Q2<100 GeV2 and inelasticity 0.05<y<0.6. Cross sections are measured for the most energetic photon with pseudorapidity η>7.9
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