2013/10/20 by da Silveira, Gustavo G.
#FOS: Physical sciences #High Energy Physics - Experiment (hep-ex)
paper · doi:10.48550/arxiv.1310.5327
We report the results on the searches of exclusive production of low- and high-mass pairs with the Compact Muon Solenoid (CMS) detector in proton-proton collisions at √(s) = 7 TeV. The analyses comprise the central exclusive γγ production, the exclusive two-photon production of dileptons, e+e- and μ+μ-, and the exclusive two-photon production of W pairs in the asymmetric e±μ∓ decay channel. No diphotons candidates are observed in data and an upper limit on the cross section is set to 1.18 pb with 95% confidence level for ET(γ)> 5.5 GeV and |η(γ)| 5.5 GeV and |η(e)| 11.5 GeV, p_\textrmT(μ)> 4 GeV and |η(μ)| 4 GeV, |η(μ)| 20 GeV. Moreover, the study of the tail of the dilepton transverse momentum distribution resulted in model-independent upper limits for the anomalous quartic gauge couplings, which are of the order of 10-4.