Determination of the top-quark pole mass and strong coupling constant from the t(t)over-bar production cross section in pp collisions at √s=7 TeV

被引：88

作者：

Chatrchyan, S. ^{[1
]}

Khachatryan, V. ^{[1
]}

Sirunyan, A. M. ^{[1
]}

Tumasyan, A. ^{[1
]}

Adam, W. ^{[2
]}

Bergauer, T. ^{[2
]}

Dragicevic, M. ^{[2
]}

Eroe, J. ^{[2
]}

Fabjan, C. ^{[2
,187
]}

Friedl, M. ^{[2
]}

Fruehwirth, R. ^{[2
,187
]}

Ghete, V. M. ^{[2
]}

Hoermann, N. ^{[2
]}

Hrubec, J. ^{[2
]}

Jeitler, M. ^{[2
,187
]}

Kiesenhofer, W. ^{[2
,39
]}

Knuenz, V. ^{[2
]}

Krammer, M. ^{[2
,187
]}

Kraetschmer, I. ^{[2
]}

Liko, D. ^{[2
]}

Mikulec, I. ^{[2
]}

Rabady, D. ^{[2
,188
]}

Rahbaran, B. ^{[2
]}

Rohringer, C. ^{[2
]}

Rohringer, H. ^{[2
]}

Schoefbeck, R. ^{[2
]}

Strauss, J. ^{[2
,123
]}

Taurok, A. ^{[2
]}

Treberer-Treberspurg, W. ^{[2
]}

Waltenberger, W. ^{[2
]}

Wulz, C. -E. ^{[2
,187
]}

Mossolov, V. ^{[3
]}

Shumeiko, N. ^{[3
]}

Gonzalez, J. Suarez ^{[3
]}

Alderweireldt, S. ^{[4
]}

Bansal, M. ^{[4
]}

Bansal, S. ^{[4
]}

Cornelis, T. ^{[4
]}

De Wolf, E. A. ^{[4
]}

Janssen, X. ^{[4
]}

Knutsson, A. ^{[4
]}

Luyckx, S. ^{[4
]}

Mucibello, L. ^{[4
]}

Ochesanu, S. ^{[4
]}

Roland, B. ^{[4
]}

Rougny, R. ^{[4
]}

Staykova, Z. ^{[4
]}

Van Haevermaet, H. ^{[4
]}

Van Mechelen, P. ^{[4
]}

Van Remortel, N. ^{[4
]}

机构：

[1] Yerevan Phys Inst, Yerevan 375036, Armenia

[2] Inst Hochenergiephys OeAW, 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, Sao Paulo, Brazil

[13] Univ Fed ABC, Sao Paulo, Brazil

[14] Inst Nucl Energy Res, Sofia, Bulgaria

[15] Univ Sofia, BU-1126 Sofia, Bulgaria

[16] Inst High Energy Phys, Beijing 100039, Peoples R China

[17] Peking Univ, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China

[18] Univ Los Andes, Bogota, Colombia

[19] Tech Univ Split, Split, Croatia

[20] Univ Split, Split, Croatia

[21] Rudjer Boskovic Inst, Zagreb, Croatia

[22] Univ Cyprus, Nicosia, Cyprus

[23] Charles Univ Prague, Prague, Czech Republic

[24] Acad Sci Res & Technol Arab Republ Egypt, Egyptian Network High Energy Phys, Cairo, Egypt

[25] NICPB, Tallinn, Estonia

[26] Univ Helsinki, Dept Phys, Helsinki, Finland

[27] Helsinki Inst Phys, Helsinki, Finland

[28] Lappeenranta Univ Technol, Lappeenranta, Finland

[29] CEA Saclay, DSM IRFU, F-91191 Gif Sur Yvette, France

[30] Ecole Polytech, CNRS IN2P3, Lab Leprince Ringuet, Palaiseau, France

[31] Univ Strasbourg, Univ Haute Alsace Mulhouse, Inst Pluridisciplinaire Hubert Curien, CNRS IN2P3, Strasbourg, France

[32] Inst Natl Phys Nucl & Phys Particules, Ctr Calcul, CNRS IN2P3, Villeurbanne, France

[33] Univ Lyon 1, CNRS IN2P3, Inst Phys Nucl Lyon, F-69622 Villeurbanne, France

[34] Tbilisi State Univ, Inst High Energy Phys & Informat, GE-380086 Tbilisi, Georgia

[35] Rhein Westfal TH Aachen, Inst Phys, Aachen, Germany

[36] Rhein Westfal TH Aachen, Phys Inst A, Aachen, Germany

[37] Rhein Westfal TH Aachen, Physl Inst B, Aachen, Germany

[38] Deutsch Elekt Synchrotron, Hamburg, Germany

[39] Univ Hamburg, Hamburg, Germany

[40] Univ Karlsruhe, Inst Expt Kernphys, Karlsruhe, Germany

[41] NCSR Demokritos, Inst Nucl & Particle Phys, Aghia Paraskevi, Greece

[42] Univ Athens, Athens, Greece

[43] Univ Ioannina, GR-45110 Ioannina, Greece

[44] KFKI Res Inst Particle & Nucl Phys, Budapest, Hungary

[45] ATOMKI, Inst Nucl Res, Debrecen, Hungary

[46] Univ Debrecen, Debrecen, Hungary

[47] Natl Inst Sci Educ & Res, Bhubaneswar, Orissa, India

[48] Panjab Univ, Chandigarh 160014, India

[49] Univ Delhi, Delhi 110007, India

[50] Saha Inst Nucl Phys, Kolkata, India

来源：

PHYSICS LETTERS B | 2014年 / 728卷

基金：

巴西圣保罗研究基金会; 芬兰科学院; 美国国家科学基金会;

关键词：

CMS; Physics; Top; Quark; Pair; Cross section; Mass; QCD; Strong; Coupling; Constant; PARTON DISTRIBUTIONS; (MS)OVER-BAR MASSES; JETS;

D O I：

10.1016/j.physletb.2013.12.009

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The inclusive cross section for top-quark pair production measured by the CMS experiment in protonproton collisions at a center-of-mass energy of 7 TeV is compared to the QCD prediction at next-to-next-to-leading order with various parton distribution functions to determine the top-quark pole mass, m(t)(pole), or the strong coupling constant, alpha(S). With the parton distribution function set NNPDF2.3, a pole mass of 176.7(-3.4)(+3.8) GeV is obtained when constraining alpha(S) at the scale of the Z boson mass, m(Z), to the current world average. Alternatively, by constraining m(t)(pole) to the latest average from direct mass measurements, a value of alpha(S)(m(Z)) = 0.1151(-0.0032)(+0.0033) is extracted. This is the first determination of alpha(S) using events from top-quark production. (C) 2013 The Authors. Published by Elsevier B.V. All rights reserved.

引用

页码：496 / 517

页数：22

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