Measurement of the photon identification efficiencies with the ATLAS detector using LHC Run-1 data

被引:67
作者
Aaboud, M.
Aad, G. [122 ,123 ]
Abbott, B. [154 ]
Abdallah, J. [95 ]
Abdinov, O. [15 ]
Abeloos, B. [158 ]
Aben, R. [147 ,148 ]
AbouZeid, O. S. [194 ]
Abraham, N. L. [210 ]
Abramowicz, H. [214 ]
Abreu, H. [213 ]
Abreu, R. [157 ]
Abulaiti, Y. [206 ,207 ]
Acharya, B. S. [227 ,228 ,248 ]
Adamczyk, L. [63 ]
Adams, D. L. [39 ]
Adelman, J. [149 ]
Adomeit, S. [138 ]
Adye, T. [180 ]
Affolder, A. A. [108 ]
Agatonovic-Jovin, T. [17 ]
Agricola, J. [82 ]
Aguilar-Saavedra, J. A. [169 ,174 ,175 ]
Ahlen, S. P. [33 ]
Ahmadov, F. [15 ,97 ]
Aielli, G. [183 ,184 ]
Akerstedt, H. [206 ,207 ]
Akesson, T. P. A. [118 ]
Akimov, A. V. [134 ]
Alberghi, G. L. [30 ,31 ]
Albert, J. [238 ]
Albrand, S. [83 ]
Alconada Verzini, M. J. [103 ,104 ]
Aleksa, M. [46 ]
Aleksandrov, I. N. [97 ]
Alexa, C. [40 ]
Alexander, G. [214 ]
Alexopoulos, T. [13 ]
Alhroob, M. [154 ]
Aliev, M. [106 ,107 ]
Alimonti, G. [129 ]
Alison, J. [47 ]
Alkire, S. P. [59 ]
Allbrooke, B. M. M. [210 ]
Allen, B. W. [157 ]
Allport, P. P. [24 ]
Aloisio, A. [39 ,143 ,144 ,234 ]
Alonso, A. [60 ]
Alonso, F. [103 ,104 ]
Alpigiani, C. [195 ]
机构
[1] Univ Adelaide, Dept Phys, Adelaide, SA, Australia
[2] SUNY Albany, Dept Phys, Albany, NY 12222 USA
[3] Univ Alberta, Dept Phys, Edmonton, AB, Canada
[4] Ankara Univ, Dept Phys, Ankara, Turkey
[5] Istanbul Aydin Univ, Istanbul, Turkey
[6] TOBB Univ Econ & Technol, Div Phys, Ankara, Turkey
[7] CNRS, LAPP, IN2P3, Annecy Le Vieux, France
[8] Univ Savoie Mont Blanc, Annecy Le Vieux, France
[9] Argonne Natl Lab, Div High Energy Phys, 9700 S Cass Ave, Argonne, IL 60439 USA
[10] Univ Arizona, Dept Phys, Tucson, AZ 85721 USA
[11] Univ Texas Arlington, Dept Phys, POB 19059, Arlington, TX 76019 USA
[12] Univ Athens, Dept Phys, Athens, Greece
[13] Natl Tech Univ Athens, Dept Phys, Zografos, Greece
[14] Univ Texas Austin, Dept Phys, Austin, TX 78712 USA
[15] Azerbaijan Acad Sci, Inst Phys, Baku, Azerbaijan
[16] Barcelona Inst Sci & Technol, IFAE, Barcelona, Spain
[17] Univ Belgrade, Inst Phys, Belgrade, Serbia
[18] Univ Bergen, Dept Phys & Technol, Bergen, Norway
[19] Lawrence Berkeley Natl Lab, Div Phys, Berkeley, CA USA
[20] Univ Calif Berkeley, Berkeley, CA 94720 USA
[21] Humboldt Univ, Dept Phys, Berlin, Germany
[22] Univ Bern, Albert Einstein Ctr Fundamental Phys, Bern, Switzerland
[23] Univ Bern, High Energy Phys Lab, Bern, Switzerland
[24] Univ Birmingham, Sch Phys & Astron, Birmingham, W Midlands, England
[25] Bogazici Univ, Dept Phys, Istanbul, Turkey
[26] Gaziantep Univ, Dept Engn Phys, Gaziantep, Turkey
[27] Istanbul Bilgi Univ, Fac Engn & Nat Sci, Gaziantep, Turkey
[28] Bahcesehir Univ, Fac Engn & Nat Sci, Istanbul, Turkey
[29] Univ Antonio Narino, Ctr Invest, Bogota, Colombia
[30] INFN, Sez Bologna, Bologna, Italy
[31] Univ Bologna, Dipartimento Fis & Astron, Bologna, Italy
[32] Univ Bonn, Phys Inst, Bonn, Germany
[33] Boston Univ, Dept Phys, 590 Commonwealth Ave, Boston, MA 02215 USA
[34] Brandeis Univ, Dept Phys, Waltham, MA 02254 USA
[35] Univ Fed Rio de Janeiro, COPPE EE IF, Rio De Janeiro, Brazil
[36] Fed Univ Juiz Fora UFJF, Elect Circuits Dept, Juiz De Fora, Brazil
[37] Fed Univ Sao Joao Rei UFSJ, Sao Joao Del Rei, Brazil
[38] Univ Sao Paulo, Inst Fis, Sao Paulo, Brazil
[39] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA
[40] Natl Inst Phys & Nucl Engn, Bucharest, Romania
[41] Natl Inst Res & Dev Isotop & Mol Technol, Dept Phys, Cluj Napoca, Romania
[42] West Univ Timisoara, Timisoara, Romania
[43] Univ Buenos Aires, Dept Fis, Buenos Aires, DF, Argentina
[44] Univ Cambridge, Cavendish Lab, Cambridge, England
[45] Carleton Univ, Dept Phys, Ottawa, ON, Canada
[46] CERN, CH-1211 Geneva 23, Switzerland
[47] Univ Chicago, Enrico Fermi Inst, 5640 S Ellis Ave, Chicago, IL 60637 USA
[48] Pontificia Univ Catolic Chile, Dept Fis, Santiago, Chile
[49] Univ Tecn Federico Santa Maria, Dept Fis, Valparaiso, Chile
[50] Chinese Acad Sci, Inst High Energy Phys, Beijing, Peoples R China
来源
EUROPEAN PHYSICAL JOURNAL C | 2016年 / 76卷 / 12期
基金
加拿大自然科学与工程研究理事会; 欧盟地平线“2020”; 美国国家科学基金会; 巴西圣保罗研究基金会;
关键词
D O I
10.1140/epjc/s10052-016-4507-9
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
The algorithms used by the ATLAS Collaboration to reconstruct and identify prompt photons are described. Measurements of the photon identification efficiencies are reported, using 4.9 fb(-1) of pp collision data collected at the LHC at root s = 7 TeV and 20.3 fb-1 at root s = 8 TeV. The efficiencies are measured separately for converted and unconverted photons, in four different pseudorapidity regions, for transverse momenta between 10 GeV and 1.5 TeV. The results from the combination of three data-driven techniques are compared to the predictions from a simulation of the detector response, after correcting the electromagnetic shower momenta in the simulation for the average differences observed with respect to data. Data-to-simulation efficiency ratios used as correction factors in physics measurements are determined to account for the small residual efficiency differences. These factors are measured with uncertainties between 0.5% and 10% in 7 TeV data and between 0.5% and 5.6% in 8 TeV data, depending on the photon transverse momentum and pseudorapidity.
引用
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页数:42
相关论文
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