Measurements of the pp ? W?? and pp ? Z?? cross sections and limits on anomalous quartic gauge couplings at ?s=8 TeV
[ X ]
Tarih
2017
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Springer
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Measurements are presented of W gamma gamma and Z gamma gamma production in proton-proton collisions. Fiducial cross sections are reported based on a data sample corresponding to an integrated luminosity of 19.4 fb(-1) collected with the CMS detector at a center-of-mass energy of 8 TeV. Signal is identified through the W -> lv and Z -> ll decay modes, where l is a muon or an electron. The production of W gamma gamma and Z gamma gamma, measured with significances of 2.6 and 5.9 standard deviations, respectively, is consistent with standard model predictions. In addition, limits on anomalous quartic gauge couplings in W gamma gamma production are determined in the context of a dimension-8 effective field theory.
Açıklama
Anahtar Kelimeler
Hadron-Hadron scattering (experiments)
Kaynak
Journal of High Energy Physics
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
Sayı
10
