Measurement of the Z? production cross section in pp collisions at 8 TeV and search for anomalous triple gauge boson couplings
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Erişim
info:eu-repo/semantics/openAccessTarih
2015Yazar
Khachatryan, V.Sirunyan, A. M.
Tumasyan, A.
Adam, W.
Bergauer, T.
Dragicevic, M.
Collaboration
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Abstract: The cross section for the production of Z? 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 ZZ? and Z?? are set that improve on previous experimental results obtained with the charged lepton decay modes of the Z boson.[Figure not available: see fulltext.] © 2015, The Author(s).
Kaynak
Journal of High Energy PhysicsCilt
2015Sayı
4Koleksiyonlar
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