Measurement of the top-quark mass in t(t)over-bar events with lepton plus jets final states in pp collisions at √s=7 TeV

被引:0
|
作者
Chatrchyan, S. [1 ]
Khachatryan, V. [1 ]
Sirunyan, A. M. [1 ]
Tumasyan, A. [1 ]
Adam, W. [2 ]
Aguilo, E. [2 ]
Bergauer, T. [2 ]
Dragicevic, M. [2 ]
Eroe, J. [2 ]
Fabjan, C. [2 ,179 ]
Friedl, M. [2 ]
Fruehwirth, R. [2 ,179 ]
Ghete, V. M. [2 ]
Hammer, J. [2 ]
Hoermann, N. [2 ]
Hrubec, J. [2 ]
Jeitler, M. [2 ,179 ]
Kiesenhofer, W. [2 ]
Knuenz, V. [2 ]
Krammer, M. [2 ,179 ]
Kraetschmer, I. [2 ]
Liko, D. [2 ]
Mikulec, I. [2 ]
Pernicka, M. [2 ]
Rahbaran, B. [2 ]
Rohringer, C. [2 ]
Rohringer, H. [2 ]
Schoefbeck, R. [2 ]
Strauss, J. [2 ]
Taurok, A. [2 ]
Waltenberger, W. [2 ]
Walzel, G. [2 ]
Widl, E. [2 ]
Wulz, C. -E. [2 ,179 ]
Mossolov, V. [3 ]
Shumeiko, N. [3 ]
Gonzalez, J. Suarez [3 ]
Bansal, M. [4 ]
Bansal, S. [4 ]
Cornelis, T. [4 ]
De Wolf, E. A. [4 ]
Janssen, X. [4 ]
Luyckx, S. [4 ]
Mucibello, L. [4 ]
Ochesanu, S. [4 ]
Roland, B. [4 ]
Rougny, R. [4 ]
Selvaggi, M. [4 ]
Staykova, Z. [4 ]
Van Haevermaet, H. [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, Inst Fis Teor, BR-01405 Sao Paulo, Brazil
[13] Bulgarian Acad Sci, Inst Nucl Res & Nucl Energy, Sofia, Bulgaria
[14] Univ Sofia, BU-1126 Sofia, Bulgaria
[15] Inst High Energy Phys, Beijing 100039, Peoples R China
[16] Peking Univ, State Key Lab Nucl Phys & Tech, Beijing 100871, Peoples R China
[17] Univ Los Andes, Bogota, Colombia
[18] Tech Univ Split, Split, Croatia
[19] Univ Split, Split, Croatia
[20] Inst Rudjer Boskov, Zagreb, Croatia
[21] Univ Cyprus, Nicosia, Cyprus
[22] Charles Univ Prague, Prague, Czech Republic
[23] Egyptian Network High Energy Phys, Acad Sci Res & Technol Arab Republ Egypt, Cairo, Egypt
[24] NICPB, Tallinn, Estonia
[25] Univ Helsinki, Dept Phys, Helsinki, Finland
[26] Helsinki Inst Phys, Helsinki, Finland
[27] Lappeenranta Univ Technol, Lappeenranta, Finland
[28] CEA Saclay, DSM IRFU, F-91191 Gif Sur Yvette, France
[29] Ecole Polytech, CNRS, IN2P3, Lab Leprince Ringuet, F-91128 Palaiseau, France
[30] Univ Haute Alsace Mulhouse, Univ Strasbourg, Inst Pluridisciplinaire Hubert Curien, CNRS,IN2P3, Strasbourg, France
[31] CNRS, Inst Natl Phys Nucl & Phys Particules, IN2P3, Ctr Calcul, Villeurbanne, France
[32] Univ Lyon 1, CNRS, Inst Phys Nucl Lyon, IN2P3, F-69622 Villeurbanne, France
[33] Acad Sci, E Andronikashvili Inst Phys, Tbilisi, Georgia
[34] Rhein Westfal TH Aachen, Inst Phys 1, Aachen, Germany
[35] Rhein Westfal TH Aachen, Phys Inst A 3, Aachen, Germany
[36] Rhein Westfal TH Aachen, Physikal Inst B 3, Aachen, Germany
[37] DESY, Hamburg, Germany
[38] Univ Hamburg, Hamburg, Germany
[39] Univ Karlsruhe, Inst Expt Kernphys, D-7500 Karlsruhe, Germany
[40] Inst Nucl Phys Demokritos, Aghia Paraskevi, Greece
[41] Univ Athens, Athens, Greece
[42] Univ Ioannina, GR-45110 Ioannina, Greece
[43] KFKI Res Inst Particle & Nucl Phys, Budapest, Hungary
[44] Inst Nucl Res ATOMKI, Debrecen, Hungary
[45] Univ Debrecen, Debrecen, Hungary
[46] Panjab Univ, Chandigarh 160014, India
[47] Univ Delhi, Delhi 110007, India
[48] Saha Inst Nucl Phys, Kolkata, India
[49] Bhabha Atom Res Ctr, Bombay 400085, Maharashtra, India
[50] Inst Fundamental Res EHEP, Bombay, Maharashtra, India
来源
基金
美国国家科学基金会; 巴西圣保罗研究基金会; 芬兰科学院;
关键词
Hadron-Hadron Scattering;
D O I
10.1007/JHEP12(2012)105
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 mass of the top quark is measured using a sample of t (t) over bar candidate events with one electron or muon and at least four jets in the final state, collected by CMS in pp collisions at root s = 7TeV at the LHC. A total of 5174 candidate events is selected from data corresponding to an integrated luminosity of 5.0 fb(-1). For each event the mass is reconstructed from a kinematic fit of the decay products to a t (t) over bar hypothesis. The top-quark mass is determined simultaneously with the jet energy scale (JES), constrained by the known mass of the W boson in q (q) over bar decays, to be 173.49 +/- 0.43 (stat.+JES)+/- 0.98(syst.) GeV.
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页数:37
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