Measurement of Wγ and Zγ production in proton-proton collisions at √s=7 TeV with the ATLAS detector

被引：0

作者：

Aad, G. ^{[71
]}

Abbott, B. ^{[150
]}

Abdallah, J. ^{[16
,17
,18
]}

Abdelalim, A. A. ^{[72
]}

Abdesselam, A. ^{[158
]}

Abdinov, O. ^{[15
]}

Abi, B. ^{[151
]}

Abolins, M. ^{[124
]}

Abramowicz, H. ^{[208
]}

Abreu, H. ^{[154
,155
]}

Acerbi, E. ^{[125
,126
]}

Acharya, B. S. ^{[221
,222
]}

Adams, D. L. ^{[38
]}

Addy, T. N. ^{[84
]}

Adelman, J. ^{[238
]}

Aderholz, M. ^{[136
]}

Adomeit, S. ^{[135
]}

Adragna, P. ^{[108
]}

Adye, T. ^{[173
]}

Aefsky, S. ^{[35
]}

Aguilar-Saavedra, J. A. ^{[167
,168
,241
]}

Aharrouche, M. ^{[116
]}

Ahlen, S. P. ^{[34
]}

Ahles, F. ^{[71
]}

Ahmad, A. ^{[203
]}

Ahsan, M. ^{[62
]}

Aielli, G. ^{[178
,179
]}

Akdogan, T. ^{[28
]}

Akesson, T. P. A. ^{[114
]}

Akimoto, G. ^{[210
,211
]}

Akimov, A. V. ^{[131
]}

Akiyama, A. ^{[97
]}

Alam, M. S. ^{[1
]}

Alam, M. A. ^{[109
]}

Albrand, S. ^{[81
,82
,83
]}

Aleksa, M. ^{[44
]}

Aleksandrov, I. N. ^{[95
]}

Alessandria, F. ^{[125
]}

Alexa, C. ^{[39
]}

Alexander, G. ^{[208
]}

Alexandre, G. ^{[72
]}

Alexopoulos, T. ^{[14
]}

Alhroob, M. ^{[33
]}

Aliev, M. ^{[24
]}

Alimonti, G. ^{[125
]}

Alison, J. ^{[161
]}

Aliyev, M. ^{[15
]}

Allport, P. P. ^{[105
]}

Allwood-Spiers, S. E. ^{[79
]}

Almond, J. ^{[117
]}

机构：

[1] SUNY Albany, Albany, NY 12222 USA

[2] Univ Alberta, Dept Phys, Edmonton, AB, Canada

[3] Ankara Univ, Dept Phys, Ankara, Turkey

[4] Dumlupinar Univ, Dept Phys, Kutahya, Turkey

[5] Gazi Univ, Dept Phys, Ankara, Turkey

[6] TOBB Univ Econ & Technol, Div Phys, Ankara, Turkey

[7] Turkish Atom Energy Commiss, Ankara, Turkey

[8] CNRS IN2P3, LAPP, Annecy Le Vieux, France

[9] Univ Savoie, Annecy Le Vieux, France

[10] Argonne Natl Lab, Div High Energy Phys, Argonne, IL 60439 USA

[11] Univ Arizona, Dept Phys, Tucson, AZ 85721 USA

[12] Univ Texas Arlington, Dept Phys, POB 19059, Arlington, TX 76019 USA

[13] Univ Athens, Dept Phys, Athens, Greece

[14] Natl Tech Univ Athens, Dept Phys, Zografos, Greece

[15] Azerbaijan Acad Sci, Inst Phys, Baku, Azerbaijan

[16] Inst Fis Altes Energies, Barcelona, Spain

[17] Univ Autonoma Barcelona, Barcelona, Spain

[18] ICREA, Barcelona, Spain

[19] Univ Belgrade, Inst Phys, Belgrade, Serbia

[20] Vinca Inst Nucl Sci, Belgrade, Serbia

[21] Univ Bergen, Dept Phys & Technol, Bergen, Norway

[22] Lawrence Berkeley Natl Lab, Div Phys, Berkeley, CA USA

[23] Univ Calif Berkeley, Berkeley, CA 94720 USA

[24] Humboldt Univ, Dept Phys, Berlin, Germany

[25] Univ Bern, Albert Einstein Ctr Fundamental Phys, Bern, Switzerland

[26] Univ Bern, High Energy Phys Lab, Bern, Switzerland

[27] Univ Birmingham, Sch Phys & Astron, Birmingham, W Midlands, England

[28] Bogazici Univ, Dept Phys, Istanbul, Turkey

[29] Dogus Univ, Div Phys, Istanbul, Turkey

[30] Gaziantep Univ, Dept Phys Engn, Gaziantep, Turkey

[31] INFN Sez Bologna, Bologna, Italy

[32] Univ Bologna, Dipartimento Fis, Bologna, Italy

[33] Univ Bonn, Phys Inst, Bonn, Germany

[34] Boston Univ, Dept Phys, 590 Commonwealth Ave, Boston, MA 02215 USA

[35] Brandeis Univ, Dept Phys, Waltham, MA 02254 USA

[36] Univ Fed Rio De Janeiro COPPE EE IF, Rio De Janeiro, Brazil

[37] Univ Sao Paulo, Inst Fis, Sao Paulo, Brazil

[38] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA

[39] Natl Inst Phys & Nucl Engn, Bucharest, Romania

[40] Univ Politehn Bucuresti, Bucharest, Romania

[41] Univ Buenos Aires, Dept Fis, Buenos Aires, DF, Argentina

[42] Univ Cambridge, Cavendish Lab, Cambridge, England

[43] Carleton Univ, Dept Phys, Ottawa, ON, Canada

[44] CERN, Geneva, Switzerland

[45] Univ Chicago, Enrico Fermi Inst, 5640 S Ellis Ave, Chicago, IL 60637 USA

[46] Pontificia Univ Catolica Chile, Dept Fis, Santiago, Chile

[47] Univ Tecn Federico Santa Maria, Dept Fis, Valparaiso, Chile

[48] Chinese Acad Sci, Inst High Energy Phys, Beijing, Peoples R China

[49] Univ Sci & Technol China, Dept Modern Phys, Hefei, Anhui, Peoples R China

[50] Nanjing Univ, Dept Phys, Nanjing, Jiangsu, Peoples R China

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2011年 / 09期

基金：

巴西圣保罗研究基金会; 加拿大自然科学与工程研究理事会;

关键词：

Hadron-Hadron Scattering; PARTON DISTRIBUTIONS;

D O I：

10.1007/JHEP09(2011)072

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We present studies of W and Z bosons with associated high energy photons produced in pp collisions at root s = 7 TeV. The analysis uses 35 pb(-1) of data collected by the ATLAS experiment in 2010. The event selection requires W and Z bosons decaying into high p(T) leptons (electrons or muons) and a photon with E-T > 15 GeV separated from the lepton(s) by a distance Delta R(l, gamma) > 0.7 in n-phi space. A total of 95 (97) pp > e(+/-)nu gamma + X (pp -> mu(+/-)nu(gamma) + X) and 25 (23) pp -> e(+)e(-)gamma X (pp -> mu+mu-gamma + X) event candidates are selected. The kinematic distributions of the leptons and photons and the production cross sections are measured. The data are found to agree with Standard Model predictions that include next-to-leading-order O(alpha alpha(s)) contributions.

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