Abstract
A search for exclusive or quasi-exclusive W+Wproduction induced by photon-photon exchange in pp collisions at sqrt(s)=8 TeV is reported using data corresponding to an integrated luminosity of 19.7/fb. Events are selected by requiring the presence of an electron-muon pair with large transverse momentum pT gt 30 GeV and no associated charged particles detected from the same vertex. The observed yields and kinematic distributions are compatible with the Standard Model prediction for exclusive and quasi-exclusive W+Wproduction. The di-lepton transverse momentum spectrum is studied for deviations from the Standard Model, and the resulting upper limits are compared to predictions assuming anomalous quartic gauge couplings. Presented at EPS-HEP 2015 European Physical Society Conference on High Energy Physics 2015 Exclusive W+W− production measured with the CMS experiment and constraints on Anomalous Quartic Gauge Couplings Manfred Jeitler∗† Institute of High Energy Physics of the Austrian Academy of Sciences, Vienna, Austria E-mail: manfred.jeitler@cern.ch A search for exclusive or quasi-exclusive W+W− production induced by photon-photon exchange in pp collisions at √ s = 8 TeV is reported using data corresponding to an integrated luminosity of 19.7 fb−1. Events are selected by requiring the presence of an electron-muon pair with large transverse momentum pT > 30 GeV and no associated charged particles detected from the same vertex. The observed yields and kinematic distributions are compatible with the Standard Model prediction for exclusive and quasi-exclusive W+W− production. The dilepton transverse momentum spectrum is studied for deviations from the Standard Model, and the resulting upper limits are compared to predictions assuming anomalous quartic gauge couplings. The European Physical Society Conference on High Energy Physics 22-29 July 2015 Vienna, Austria ∗Speaker. †For the CMS Collaboration. c © Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND 4.0). http://pos.sissa.it/ Exclusive W+W− production measured by CMS and constraints on AQGC Manfred Jeitler
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