Measurement of the Zγ production cross section in pp collisions at 8 TeV and search for anomalous triple gauge boson couplings

被引：0
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作者：
V. Khachatryan
A. M. Sirunyan
A. Tumasyan
W. Adam
T. Bergauer
M. Dragicevic
J. Erö
M. Friedl
R. Frühwirth
V. M. Ghete
C. Hartl
N. Hörmann
J. Hrubec
M. Jeitler
W. Kiesenhofer
V. Knünz
M. Krammer
I. Krätschmer
D. Liko
I. Mikulec
D. Rabady
B. Rahbaran
H. Rohringer
R. Schöfbeck
J. Strauss
W. Treberer-Treberspurg
W. Waltenberger
C.-E. Wulz
V. Mossolov
N. Shumeiko
J. Suarez Gonzalez
S. Alderweireldt
S. Bansal
T. Cornelis
E. A. De Wolf
X. Janssen
A. Knutsson
J. Lauwers
S. Luyckx
S. Ochesanu
R. Rougny
M. Van De Klundert
H. Van Haevermaet
P. Van Mechelen
N. Van Remortel
A. Van Spilbeeck
F. Blekman
S. Blyweert
J. D’Hondt
N. Daci
机构：
[1] Yerevan Physics Institute,State Key Laboratory of Nuclear Physics and Technology
[2] Institut für Hochenergiephysik der OeAW,Department of Physics
[3] National Centre for Particle and High Energy Physics,National Centre for Particle Physics
[4] Universiteit Antwerpen,National Centre for Physics
[5] Vrije Universiteit Brussel,Institute of Experimental Physics, Faculty of Physics
[6] Université Libre de Bruxelles,Skobeltsyn Institute of Nuclear Physics
[7] Ghent University,Institute for Particle Physics
[8] Université Catholique de Louvain,Plasma Physics Research Center, Science and Research Branch
[9] Université de Mons,Faculty of Physics
[10] Centro Brasileiro de Pesquisas Fisicas,Facoltà Ingegneria
[11] Universidade do Estado do Rio de Janeiro,School of Physics and Astronomy
[12] Universidade Estadual Paulista,undefined
[13] Universidade Federal do ABC,undefined
[14] Institute for Nuclear Research and Nuclear Energy,undefined
[15] University of Sofia,undefined
[16] Institute of High Energy Physics,undefined
[17] Peking University,undefined
[18] Universidad de Los Andes,undefined
[19] University of Split,undefined
[20] Faculty of Electrical Engineering,undefined
[21] Mechanical Engineering and Naval Architecture,undefined
[22] University of Split,undefined
[23] Faculty of Science,undefined
[24] Institute Rudjer Boskovic,undefined
[25] University of Cyprus,undefined
[26] Charles University,undefined
[27] Academy of Scientific Research and Technology of the Arab Republic of Egypt,undefined
[28] Egyptian Network of High Energy Physics,undefined
[29] National Institute of Chemical Physics and Biophysics,undefined
[30] University of Helsinki,undefined
[31] Helsinki Institute of Physics,undefined
[32] Lappeenranta University of Technology,undefined
[33] DSM/IRFU,undefined
[34] CEA/Saclay,undefined
[35] Laboratoire Leprince-Ringuet,undefined
[36] Ecole Polytechnique,undefined
[37] IN2P3-CNRS,undefined
[38] Institut Pluridisciplinaire Hubert Curien,undefined
[39] Université de Strasbourg,undefined
[40] Université de Haute Alsace Mulhouse,undefined
[41] CNRS/IN2P3,undefined
[42] Centre de Calcul de l’Institut National de Physique Nucleaire et de Physique des Particules,undefined
[43] CNRS/IN2P3,undefined
[44] Université de Lyon,undefined
[45] Université Claude Bernard Lyon 1,undefined
[46] CNRS-IN2P3,undefined
[47] Institut de Physique Nucléaire de Lyon,undefined
[48] Institute of High Energy Physics and Informatization,undefined
[49] Tbilisi State University,undefined
[50] RWTH Aachen University,undefined
来源：
Journal of High Energy Physics | / 2015卷
关键词：
Hadron-Hadron Scattering;
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摘要：
The cross section for the production of Zγ in proton-proton collisions at 8 TeV is measured based on data collected by the CMS experiment at the LHC corresponding to an integrated luminosity of 19.5 fb−1. Events with an oppositely-charged pair of muons or electrons together with an isolated photon are selected. The differential cross section as a function of the photon transverse momentum is measured inclusively and exclusively, where the exclusive selection applies a veto on central jets. The observed cross sections are compatible with the expectations of next-to-next-to-leading-order quantum chromodynamics. Limits on anomalous triple gauge couplings of ZZγ and Zγγ are set that improve on previous experimental results obtained with the charged lepton decay modes of the Z boson. [graphic not available: see fulltext]
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