Measurement of the Isolated Prompt Photon Production Cross Section in pp Collisions at √s=7 TeV

被引:77
作者
Khachatryan, V. [1 ]
Sirunyan, A. M. [1 ]
Tumasyan, A. [1 ]
Adam, W. [2 ]
Bergauer, T. [2 ]
Dragicevic, M. [2 ]
Ero, J. [2 ]
Fabjan, C. [2 ]
Friedl, M. [2 ]
Fruehwirth, R. [2 ]
Ghete, V. M. [2 ]
Hammer, J. [2 ]
Haensel, S. [2 ]
Hartl, C. [2 ]
Hoch, M. [2 ]
Hoermann, N. [2 ]
Hrubec, J. [2 ]
Jeitler, M. [2 ]
Kasieczka, G. [2 ]
Kiesenhofer, W. [2 ]
Krammer, M. [2 ]
Liko, D. [2 ]
Mikulec, I. [2 ]
Pernicka, M. [2 ]
Rohringer, H. [2 ]
Schoefbeck, R. [2 ]
Strauss, J. [2 ]
Taurok, A. [2 ]
Teischinger, F. [2 ]
Waltenberger, W. [2 ]
Walzel, G. [2 ]
Widl, E. [2 ]
Wulz, C. -E. [2 ]
Mossolov, V. [3 ]
Shumeiko, N. [3 ]
Suarez Gonzalez, J. [3 ]
Benucci, L. [4 ]
Ceard, L. [4 ]
Cerny, K. [4 ]
De Wolf, E. A. [4 ]
Janssen, X. [4 ]
Maes, T. [4 ]
Mucibello, L. [4 ]
Ochesanu, S. [4 ]
Roland, B. [4 ]
Rougny, R. [4 ]
Selvaggi, M. [4 ]
Van Haevermaet, H. [4 ]
Van Mechelen, P. [4 ]
Van Remortel, N. [4 ]
机构
[1] Yerevan Phys Inst, Yerevan 375036, Armenia
[2] OeAW, Inst Hochenergiephys, Vienna, Austria
[3] Natl Ctr Particle & High Energy Phys, Minsk, BELARUS
[4] Univ Antwerp, B-2020 Antwerp, Belgium
[5] Vrije Univ Brussel, Brussels, Belgium
[6] Univ Libre Bruxelles, Brussels, Belgium
[7] Univ Ghent, B-9000 Ghent, Belgium
[8] Catholic Univ Louvain, B-1348 Louvain, Belgium
[9] Univ Mons, B-7000 Mons, Belgium
[10] Ctr Brasileiro Pesquisas Fis, Rio De Janeiro, Brazil
[11] Univ Estado Rio de Janeiro, BR-20550011 Rio De Janeiro, Brazil
[12] Univ Estadual Paulista, Inst Fis Teor, BR-01405 Sao Paulo, Brazil
[13] Bulgarian Acad Sci, Inst Nucl Res & Nucl Energy, Sofia, Bulgaria
[14] Univ Sofia, BU-1126 Sofia, Bulgaria
[15] Inst High Energy Phys, Beijing 100039, Peoples R China
[16] Peking Univ, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China
[17] Univ Los Andes, Bogota, Colombia
[18] Tech Univ Split, Split, Croatia
[19] Univ Split, Split, Croatia
[20] Rudjer Boskovic Inst, Zagreb, Croatia
[21] Univ Cyprus, Nicosia, Cyprus
[22] Acad Sci Res & Technol Arab Republ Egypt, Egyptian Network High Energy Phys, Cairo, Egypt
[23] NICPB, Tallinn, Estonia
[24] Univ Helsinki, Dept Phys, Helsinki, Finland
[25] Helsinki Inst Phys, Helsinki, Finland
[26] Lappeenranta Univ Technol, Lappeenranta, Finland
[27] CNRS, IN2P3, Lab Annecy Le Vieux Phys Particules, Annecy Le Vieux, France
[28] CEA Saclay, DSM IRFU, F-91191 Gif Sur Yvette, France
[29] Ecole Polytech, CNRS, IN2P3, Lab Leprince Ringuet, F-91128 Palaiseau, France
[30] Univ Haute Alsace Mulhouse, Univ Strasbourg, Inst Pluridisciplinaire Hubert Curien, CNRS,IN2P3, Strasbourg, France
[31] Inst Natl Phys Nucl & Phys Particules, Ctr Calcul, Villeurbanne, France
[32] Univ Lyon 1, CNRS, IN2P3, Inst Phys Nucl Lyon, F-69622 Villeurbanne, France
[33] Georgian Acad Sci, E Andronikashvili Inst Phys, GE-380060 Tbilisi, Georgia
[34] Rhein Westfal TH Aachen, Inst Phys 1, Aachen, Germany
[35] Rhein Westfal TH Aachen, Phys Inst A 3, Aachen, Germany
[36] Rhein Westfal TH Aachen, Phys Inst B 3, Aachen, Germany
[37] Deutsch Elekt Synchrotron, Hamburg, Germany
[38] Univ Hamburg, Hamburg, Germany
[39] Univ Karlsruhe, Inst Expt Kernphys, D-7500 Karlsruhe, Germany
[40] Inst Nucl Phys Demokritos, Aghia Paraskevi, Greece
[41] Univ Athens, Athens, Greece
[42] Univ Ioannina, GR-45110 Ioannina, Greece
[43] KFKI Res Inst Particle & Nucl Phys, Budapest, Hungary
[44] Inst Nucl Res ATOMKI, Debrecen, Hungary
[45] Univ Debrecen, Debrecen, Hungary
[46] Panjab Univ, Chandigarh 160014, India
[47] Univ Delhi, Delhi 110007, India
[48] Bhabha Atom Res Ctr, Mumbai 400085, Maharashtra, India
[49] Tata Inst Fundamental Res EHEP, Mumbai, Maharashtra, India
[50] Tata Inst Fundamental Res HECR, Mumbai, Maharashtra, India
基金
美国国家科学基金会; 芬兰科学院; 巴西圣保罗研究基金会;
关键词
P(P)OVER-BAR COLLISIONS;
D O I
10.1103/PhysRevLett.106.082001
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The differential cross section for the inclusive production of isolated prompt photons has been measured as a function of the photon transverse energy E-T(Gamma) in pp collisions at root s 7 TeV using data recorded by the CMS detector at the LHC. The data sample corresponds to an integrated luminosity of 2.9 pb(-1). Photons are required to have a pseudorapidity vertical bar eta(gamma)vertical bar < 1.45 and E-T(Gamma) > 21 GeV, covering the kinematic region 0.006 < x(T) < 0.086. The measured cross section is found to be in agreement with next-to-leading-order perturbative QCD calculations.
引用
收藏
页数:15
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