Measurement of the υ(1S) production cross-section in pp collisions at √s=7 TeV

被引:32
作者
Aad, G. [69 ]
Abbott, B. [148 ]
Abdallah, J. [17 ,18 ,19 ]
Abdelalim, A. A. [70 ]
Abdesselam, A. [156 ]
Abdinov, O. [16 ]
Abi, B. [149 ]
Abolins, M. [122 ]
Abramowicz, H. [206 ]
Abreu, H. [152 ,153 ]
Acerbi, E. [123 ,124 ]
Acharya, B. S. [219 ,220 ]
Adams, D. L. [37 ]
Addy, T. N. [82 ]
Adelman, J. [236 ]
Aderholz, M. [134 ]
Adomeit, S. [133 ]
Adragna, P. [106 ]
Adye, T. [171 ]
Aefsky, S. [34 ]
Aguilar-Saavedra, J. A. [164 ,165 ,166 ]
Aharrouche, M. [114 ]
Ahlen, S. P. [33 ]
Ahles, F. [69 ]
Ahmad, A. [201 ]
Ahsan, M. [61 ]
Aielli, G. [176 ,177 ]
Akdogan, T. [1 ]
Akesson, T. P. A. [112 ]
Akimoto, G. [208 ,209 ]
Akimov, A. V. [129 ]
Akiyama, A. [95 ]
Alam, M. S. [2 ]
Alam, M. A. [107 ]
Albrand, S. [79 ,80 ,81 ]
Aleksa, M. [43 ]
Aleksandrov, I. N. [93 ]
Alessandria, F. [123 ]
Alexa, C. [38 ]
Alexander, G. [206 ]
Alexandre, G. [70 ]
Alexopoulos, T. [15 ]
Alhroob, M. [32 ]
Allev, M. [24 ]
Alimonti, G. [123 ]
Alison, J. [159 ]
Aliyevl, M. [16 ]
Allport, P. P. [103 ]
Allwood-Spiers, S. E. [77 ]
Almond, J. [115 ]
机构
[1] Bogazici Univ, Dept Phys, Istanbul, Turkey
[2] SUNY Albany, Albany, NY 12222 USA
[3] Univ Alberta, Dept Phys, Edmonton, AB, Canada
[4] Ankara Univ, Dept Phys, TR-06100 Ankara, Turkey
[5] Dumlupinar Univ, Dept Phys, Kutahya, Turkey
[6] Gazi Univ, Dept Phys, Ankara, Turkey
[7] TOBB Univ Econ & Technol, Div Phys, Ankara, Turkey
[8] Turkish Atom Energy Commiss, Ankara, Turkey
[9] CNRS, LAPP, IN2P3, Annecy Le Vieux, France
[10] Univ Savoie, Annecy Le Vieux, France
[11] Argonne Natl Lab, Div High Energy Phys, Argonne, IL 60439 USA
[12] Univ Arizona, Dept Phys, Tucson, AZ 85721 USA
[13] Univ Texas Arlington, Dept Phys, Arlington, TX 76019 USA
[14] Univ Athens, Dept Phys, Athens, Greece
[15] Natl Tech Univ Athens, Dept Phys, Zografos, Greece
[16] Azerbaijan Acad Sci, Inst Phys, Baku 370143, Azerbaijan
[17] Inst Fis Altes Energies, Barcelona, Spain
[18] Univ Autonoma Barcelona, E-08193 Barcelona, Spain
[19] ICREA, Barcelona, Spain
[20] Univ Belgrade, Inst Phys, Belgrade, Serbia
[21] Vinca Inst Nucl Sci, Belgrade, Serbia
[22] Univ Bergen, Dept Phys & Technol, Bergen, Norway
[23] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Phys, 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] Dogus Univ, Div Phys, Istanbul, Turkey
[29] Gaziantep Univ, Dept Engn Phys, Gaziantep, Turkey
[30] Ist Nazl Fis Nucl, Sez Bologna, I-40126 Bologna, Italy
[31] Univ Bologna, Dipartimento Fis, Bologna, Italy
[32] Univ Bonn, Inst Phys, D-5300 Bonn, Germany
[33] Boston Univ, Dept Phys, 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] Univ Sao Paulo, Inst Fis, BR-01498 Sao Paulo, Brazil
[37] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA
[38] Natl Inst Phys & Nucl Engn, Bucharest, Romania
[39] Univ Politehn Bucuresti, Bucharest, Romania
[40] Univ Buenos Aires, Dept Fis, Buenos Aires, DF, Argentina
[41] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England
[42] Carleton Univ, Dept Phys, Ottawa, ON K1S 5B6, Canada
[43] CERN, Geneva, Switzerland
[44] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA
[45] Pontificia Univ Catolica Chile, Dept Fis, Santiago, Chile
[46] Univ Tecn Federico Santa Maria, Dept Fis, Valparaiso, Chile
[47] Chinese Acad Sci, Inst High Energy Phys, Beijing, Peoples R China
[48] Univ Sci & Technol China, Dept Modern Phys, Hefei, Anhui, Peoples R China
[49] Nanjing Univ, Dept Phys, Nanjing, Jiangsu, Peoples R China
[50] Shandong Univ, High Energy Phys Grp, Jinan, Shandong, Peoples R China
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; 美国国家科学基金会;
关键词
QCD ANALYSIS;
D O I
10.1016/j.physletb.2011.09.092
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
A measurement of the cross-section for Upsilon(1S) -> mu(+)mu(-) production in proton-proton collisions at centre of mass energy of 7 TeV is presented. The cross-section is measured as a function of the gamma(1S) transverse momentum in two bins of rapidity, vertical bar y(gamma(1S))vertical bar < 1.2 and 1.2 < vertical bar y(gamma(1S))vertical bar < 2.4. The measurement requires that both muons have transverse momentum p(T)(mu) > 4 GeV and pseuclorapidity vertical bar eta(mu)vertical bar < 2.5 in order to reduce theoretical uncertainties on the acceptance, which depend on the poorly known polarisation. The results are based on an integrated luminosity of 1.13 pb(-1), collected with the ATLAS detector at the Large Hadron Collider. The cross-section measurement is compared to theoretical predictions: it agrees to within a factor of two with a prediction based on the NRQCD model including colour-singlet and colour-octet matrix elements as implemented in PYTHIA while it disagrees by up to a factor of ten with the next-to-leading order prediction based on the colour-singlet model. (C) 2011 CERN. Published by Elsevier B.V. All rights reserved.
引用
收藏
页码:9 / 27
页数:19
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