Measurement of the Wγ and Zγ inclusive cross sections in pp collisions at s =7 TeV and limits on anomalous triple gauge boson couplings

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题名:	Measurement of the Wγ and Zγ inclusive cross sections in pp collisions at s =7 TeV and limits on anomalous triple gauge boson couplings
作者:	林宗泰;Chatrchyan, S
贡献者:	理學院物理學系
关键词:	Collisions;Couplings;Cross sections;Gages;Gauges;Invariants;Large Hadron Collider;Photons
日期:	2014-05-13
上传时间:	2026-04-23 12:22:25 (UTC+8)
摘要:	摘要： Measurements of W gamma and Z gamma production in proton-proton collisions at [radical]s = 7 TeV are used to extract limits on anomalous triple gauge couplings. The results are based on data recorded by the CMS experiment at the LHC that correspond to an integrated luminosity of 5.0 fb super(-1). The cross sections are measured for photon transverse momenta (ProQuest: Formulae and/or non-USASCII text omitted) > 15 GeV, and for separations between photons and final-state charged leptons in the pseudorapidity-azimuthal plane of Delta R(l, gamma ) > 0.7 in l[nu] gamma and ll gamma final states, where l refers either to an electron or a muon. A dilepton invariant mass requirement of mll > 50 GeV is imposed for the Z gamma process. No deviations are observed relative to predictions from the standard model, and limits are set on anomalous WW gamma , ZZ gamma , and Z gamma gamma triple gauge couplings. 出版日期： 2014-05-13 出處： Physical review. D, Particles, fields, gravitation, and cosmology, 2014-05, Vol.89 (9) 識別號： ISSN: 1550-7998 識別號： EISSN: 1550-2368 識別號： DOI: 10.1103/PhysRevD.89.092005
显示于类别:	[物理學系] 期刊論文

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