Measurement of the production cross section for W-bosons in association with jets in pp collisions at √s=7 TeV with the ATLAS detector

被引：45

作者：

Aad, G. ^{[1
]}

Abbott, B. ^{[137
]}

Abdallah, J. ^{[16
]}

Abdelalim, A. A. ^{[65
]}

Abdesselam, A. ^{[144
]}

Abdinov, O. ^{[15
]}

Abi, B. ^{[138
]}

Abolins, M. ^{[111
]}

Abramowicz, H. ^{[190
]}

Abreu, H. ^{[141
]}

Acerbi, E. ^{[112
,113
]}

Acharya, B. S. ^{[203
,204
]}

Ackers, M. ^{[30
]}

Adams, D. L. ^{[35
]}

Addy, T. N. ^{[75
]}

Adelman, J. ^{[218
]}

Aderholz, M. ^{[123
]}

Adomeit, S. ^{[122
]}

Adragna, P. ^{[98
]}

Adye, T. ^{[159
]}

Aefsky, S. ^{[32
]}

Aguilar-Saavedra, J. A. ^{[152
,153
,154
]}

Aharrouche, M. ^{[104
]}

Ahlen, S. P. ^{[31
]}

Ahles, F. ^{[1
]}

Ahmad, A. ^{[185
]}

Ahsan, M. ^{[57
]}

Aielli, G. ^{[164
,165
]}

Akdogan, T. ^{[26
]}

Akesson, T. P. A. ^{[102
]}

Akimoto, G. ^{[192
,193
]}

Akimov, A. V. ^{[118
]}

Alam, M. S. ^{[2
]}

Alam, M. A. ^{[99
]}

Albrand, S. ^{[73
,74
]}

Aleksa, M. ^{[41
]}

Aleksandrov, I. N. ^{[86
]}

Aleppo, M. ^{[112
,113
]}

Alessandria, F. ^{[113
]}

Alexa, C. ^{[36
]}

Alexander, G. ^{[190
]}

Alexandre, G. ^{[65
]}

Alexopoulos, T. ^{[14
]}

Alhroob, M. ^{[30
]}

Aliev, M. ^{[22
]}

Alimonti, G. ^{[113
]}

Alison, J. ^{[147
]}

Aliyev, M. ^{[15
]}

Allport, P. P. ^{[95
]}

Allwood-Spiers, S. E. ^{[71
]}

机构：

[1] Univ Freiburg, Fak Math & Phys, Hermann Herder Str 3, D-79104 Freiburg, Germany

[2] SUNY Albany, Albany, NY 12222 USA

[3] Univ Alberta, Dept Phys, Ctr Particle Phys, Edmonton, AB T6G 2G7, Canada

[4] Ankara Univ, Fac Sci, Dept Phys, TR-061000 Ankara, Turkey

[5] Dumlupinar Univ, Fac Arts & Sci, Dept Phys, Kutahya, Turkey

[6] Gazi Univ, Fac Arts & Sci, Dept Phys, TR-06500 Ankara, Turkey

[7] TOBB Univ Econ & Technol, Fac Arts & Sci, Div Phys, TR-06560 Ankara, Turkey

[8] Turkish Atom Energy Commiss, TR-06530 Ankara, Turkey

[9] Univ Savoie, LAPP, IN2P3, CNRS, 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, Arlington, TX 76019 USA

[13] Univ Athens, Dept Phys, GR-15771 Athens, Greece

[14] Natl Tech Univ Athens, Dept Phys, GR-15780 Zografos, Greece

[15] Azerbaijan Acad Sci, Inst Phys, AZ-143 Baku, Azerbaijan

[16] Univ Autonoma Barcelona, IFAE, ES-08193 Barcelona, Spain

[17] Univ Belgrade, Inst Phys, Belgrade 11001, Serbia

[18] Vinca Inst Nucl Sci, Belgrade 11001, Serbia

[19] Univ Bergen, Dept Phys & Technol, NO-5007 Bergen, Norway

[20] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA

[21] Univ Calif Berkeley, Div Phys, Berkeley, CA 94720 USA

[22] Humboldt Univ, Inst Phys, D-12489 Berlin, Germany

[23] Univ Bern, Albert Einstein Ctr Fundamental Phys, High Energy Phys Lab, CH-3012 Bern, Switzerland

[24] Univ Birmingham, Sch Phys & Astron, Birmingham B15 2TT, W Midlands, England

[25] Dogus Univ, Fac Arts & Sci, Dept Phys, TR-34722 Istanbul, Turkey

[26] Bogazici Univ, Fac Sci, Dept Phys, TR-80815 Bebek, Turkey

[27] Gaziantep Univ, Fac Engn, Dept Engn Phys, TR-27310 Sehitkamil, Gaziantep, Turkey

[28] Ist Nazl Fis Nucl, Sez Bologna, IT-40127 Bologna, Italy

[29] Univ Bologna, Dipartimento Fis, IT-40127 Bologna, Italy

[30] Univ Bonn, Inst Phys, D-53115 Bonn, Germany

[31] Boston Univ, Dept Phys, Boston, MA 02215 USA

[32] Brandeis Univ, Dept Phys, Waltham, MA 02454 USA

[33] Univ Fed Rio de Janeiro, COPPE EE IF, BR-21945970 Rio De Janeiro, Brazil

[34] Univ Sao Paulo, Inst Fis, BR-05508900 Sao Paulo, Brazil

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

[36] Natl Inst Phys & Nucl Engn, R-077125 Bucharest, Romania

[37] Univ Politehn Bucuresti, Bucharest, Romania

[38] Univ Buenos Aires, FCEyN, RA-1428 Buenos Aires, DF, Argentina

[39] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England

[40] Carleton Univ, Dept Phys, Ottawa, ON K1S 5B6, Canada

[41] CERN, CH-1211 Geneva, Switzerland

[42] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA

[43] Pontificia Univ Catolica Chile, Fac Fis, Dept Fis, Santiago, Chile

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

[45] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China

[46] Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Anhui, Peoples R China

[47] Nanjing Univ, Dept Phys, Nanjing 210093, Jiangsu, Peoples R China

[48] Shandong Univ, High Energy Phys Grp, Jinan 250100, Shandong, Peoples R China

[49] Univ Blaise Pascal, Clermont Univ, CNRS, Phys Corpusculaire Lab,IN2P3, FR-63177 Aubiere, France

[50] Columbia Univ, Nevis Lab, Irvington, NY 10533 USA

来源：

PHYSICS LETTERS B | 2011年 / 698卷 / 05期

基金：

美国国家科学基金会; 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：

W-boson; Jets; ATLAS; LHC; Proton-proton; 7; TeV; PARTON DISTRIBUTIONS;

D O I：

10.1016/j.physletb.2011.03.012

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

This Letter reports on a first measurement of the inclusive W + jets cross section in proton-proton collisions at a centre-of-mass energy of 7 TeV at the LHC, with the ATLAS detector. Cross sections, in both the electron and muon decay modes of the W-boson, are presented as a function of jet multiplicity and of the transverse momentum of the leading and next-to-leading jets in the event. Measurements are also presented of the ratio of cross sections sigma (W + >= n)/sigma(W + >= n - 1) for inclusive jet multiplicities n = 1-4. The results, based on an integrated luminosity of 1.3 pb(-1), have been corrected for all known detector effects and are quoted in a limited and well-defined range of jet and lepton kinematics. The measured cross sections are compared to particle-level predictions based on perturbative QCD. Next-to-leading order calculations, studied here for n <= 2, are found in good agreement with the data. Leading-order multiparton event generators, normalized to the NNLO total cross section, describe the data well for all measured jet multiplicities. (C) 2011 CERN. Published by Elsevier B.V. All rights reserved.

引用

页码：325 / 345

页数：21

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