Measurements of jet multiplicity and differential production cross sections of Z plus jets events in proton-proton collisions at √s=7 TeV

被引:36
|
作者
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 ,189 ]
Friedl, M. [2 ]
Fruehwirth, R. [2 ,189 ]
Ghete, V. M. [2 ]
Hartl, C. [2 ]
Hoermann, N. [2 ]
Hrubec, J. [2 ]
Jeitler, M. [2 ,189 ]
Kiesenhofer, W. [2 ]
Knuenz, V. [2 ]
Krammer, M. [2 ,189 ]
Kraetschmer, I. [2 ]
Liko, D. [2 ]
Mikulec, I. [2 ]
Rabady, D. [2 ,190 ]
Rahbaran, B. [2 ]
Rohringer, H. [2 ]
Schoefbeck, R. [2 ]
Strauss, J. [2 ]
Taurok, A. [2 ]
Treberer-Treberspurg, W. [2 ]
Waltenberger, W. [2 ]
Wulz, C. -E. [2 ,189 ]
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 ]
Ochesanu, S. [4 ]
Roland, B. [4 ]
Rougny, R. [4 ]
De Klundert, M. Van [4 ]
Van Haevermaet, H. [4 ]
Van Mechelen, P. [4 ]
Van Remortel, N. [4 ]
Van Spilbeeck, A. [4 ]
Blekman, F. [5 ]
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, 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, Louvain La Neuve, 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] Univ Split, Fac Elect Engn, Mech Engn & Naval Architecture, Split, Croatia
[20] Univ Split, Fac Sci, Split, Croatia
[21] Rudjer Boskovic Inst, Zagreb, Croatia
[22] Univ Cyprus, CY-1678 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, IN2P3 CNRS, Lab Leprince Ringuet, Palaiseau, France
[31] Univ Strasbourg, Univ Haute Alsace Mulhouse, Inst Puridisciplinaire Hubert Curien, CNRS IN2P3, Strasbourg, France
[32] Ctr Calcul Inst Natl Phys Nucl & Phys Particules, CNRS IN2P3, Villeurbanne, France
[33] Univ Lyon 1, Univ Lyon, Inst Phys Nucl Lyon, CNRS IN2P3, F-69622 Villeurbanne, France
[34] Tbilisi State Univ, Inst High Energy Phys & Informatizat, GE-380086 Tbilisi, Georgia
[35] RWTH Aachen Univ I, Inst Phys, Aachen, Germany
[36] RWTH Aachen Univ III, Phys Inst A, Aachen, Germany
[37] RWTH Aachen Univ III, Phys Inst B, Aachen, Germany
[38] DESY, Hamburg, Germany
[39] Univ Hamburg, Hamburg, Germany
[40] 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] Wigner Res Ctr Phys, Budapest, Hungary
[45] Inst Nucl Res ATOMKI, 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
PHYSICAL REVIEW D | 2015年 / 91卷 / 05期
基金
英国科学技术设施理事会; 美国国家科学基金会; 芬兰科学院; 欧洲研究理事会; 巴西圣保罗研究基金会; 奥地利科学基金会; 俄罗斯基础研究基金会;
关键词
PARTON DISTRIBUTIONS;
D O I
10.1103/PhysRevD.91.052008
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Measurements of differential cross sections are presented for the production of a Z boson and at least one hadronic jet in proton-proton collisions at root s = 7 TeV, recorded by the CMS detector, using a data sample corresponding to an integrated luminosity of 4.9 fb(-1). The jet multiplicity distribution is measured for up to six jets. The differential cross sections are measured as a function of jet transverse momentum and pseudorapidity for the four highest transverse momentum jets. The distribution of the scalar sum of jet transverse momenta is also measured as a function of the jet multiplicity. The measurements are compared with theoretical predictions at leading and next-to-leading order in perturbative QCD.
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