Exclusive production ofWpairs in CMS

Da Silveira, G. Gustavo, L. Bravina, Y. Foka, S. Kabana
2014 EPJ Web of Conferences  
We report the results on the search for exclusive production of W pairs in the LHC with data collected by the Compact Muon Solenoid detector in proton-proton collisions at √ s = 7 TeV. The analysis comprises the two-photon production of a W pairs, pp → p W + W − p → p νe ± νμ ∓ p. Two events are observed in data for p T ( ) > 4 GeV, |η( )| < 2.4 and m(μ ± e ∓ ) > 20 GeV, in agreement with the standard model prediction of 2.2 ± 0.4 signal events with 0.84 ± 0.15 background events. Moreover, a
more » ... nts. Moreover, a study of the tail of the lepton pair transverse momentum distribution is performed to search for an evidence of anomalous quartic gauge couplings in the γγ → W + W − vertex. As no events are observed in data, it results in a model-independent upper limits for the anomalous quartic gauge couplings a W 0,C /Λ 2 , which are of the order of 10 −4 . a
doi:10.1051/epjconf/20147100032 fatcat:3plerzdd6fcmhl7hfku542yxsa