Measurements are presented of W gamma gamma and Z gamma gamma productionin proton-proton collisions. Fiducial cross sections are reported basedon a data sample corresponding to an integrated luminosity of 19.4fb(-1) collected with the CMS detector at a center-of-mass energy of 8TeV. 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 Zgamma gamma, measured with significances of 2.6 and 5.9 standarddeviations, respectively, is consistent with standard model predictions.In addition, limits on anomalous quartic gauge couplings in W gammagamma production are determined in the context of a dimension-8effective field theory.

Measurements of the pp -> W gamma gamma and pp -> Z gamma gamma cross sections and limits on anomalous quartic gauge couplings at root s=8 TeV

Albergo S.;Costa S.;Di Mattia A.;Giordano F.;Potenza R.;Tricomi A.;Tuve C.;
2017-01-01

Abstract

Measurements are presented of W gamma gamma and Z gamma gamma productionin proton-proton collisions. Fiducial cross sections are reported basedon a data sample corresponding to an integrated luminosity of 19.4fb(-1) collected with the CMS detector at a center-of-mass energy of 8TeV. 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 Zgamma gamma, measured with significances of 2.6 and 5.9 standarddeviations, respectively, is consistent with standard model predictions.In addition, limits on anomalous quartic gauge couplings in W gammagamma production are determined in the context of a dimension-8effective field theory.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11769/322709
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