| Issue |
EPJ Web of Conferences
Volume 71, 2014
2nd International Conference on New Frontiers in Physics
|
|
|---|---|---|
| Article Number | 00032 | |
| Number of page(s) | 8 | |
| DOI | https://doi.org/10.1051/epjconf/20147100032 | |
| Published online | 29 April 2014 | |
https://doi.org/10.1051/epjconf/20147100032
Exclusive production of W pairs in CMS
Centre for Cosmology, Particle Physics and Phenomenology (CP3), Université Catholique de Louvain UCL, Belgium
a e-mail: gustavo.silveira@cern.ch
Published online: 29 April 2014
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 → pW+ W− p → p νe± νµ∓ p. Two events are observed in data for pT(ℓ) > 4 GeV, |η(ℓ)| < 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 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 W quartic gauge couplings aW0,C/Λ2, which are of the order of 10−4.
© Owned by the authors, published by EDP Sciences, 2014
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