2014/01/09 by G. G. Da Silveira, da Silveira, Gustavo G.
Biochemistry, Genetics and Molecular Biology · #FOS: Physical sciences #Genomic variations and chromosomal abnormalities #High Energy Physics - Experiment (hep-ex)
paper · pdf · doi:10.48550/arxiv.1401.1993
openalex publication_date 2014/01/09 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
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_\textrm\footnotesize T(ℓ)> 4 GeV, |η(ℓ)| 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 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 aW0,C/Λ2, which are of the order of 10-4.