dc.contributor.author | CMS Collaboration | |
dc.date.accessioned | 2017-10-04T20:37:26Z | |
dc.date.available | 2017-10-04T20:37:26Z | |
dc.date.issued | 2016-08-22 | |
dc.identifier.citation | The CMS collaboration, Khachatryan, V., Sirunyan, A.M. et al. J. High Energ. Phys. (2016) 2016: 119. https://doi.org/10.1007/JHEP08(2016)119 | en_US |
dc.identifier.uri | http://hdl.handle.net/1808/25068 | |
dc.description.abstract | A search for exclusive or quasi-exclusive γγ → W+W− production, via pp → p(*)W+W−p(*) → p(*)μ±e∓p(*) 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(μ±e∓) > 30 GeV, and no associated charged particles detected from the same vertex. The 8 TeV results are combined with the previous 7 TeV results (obtained for 5.05 fb−1 of data). In the signal region, 13 (2) events are observed over an expected background of 3.9 ± 0.6 (0.84 ± 0.15) events for 8 (7) TeV, resulting in a combined excess of 3.4σ over the background-only hypothesis. The observed yields and kinematic distributions are compatible with the standard model prediction for exclusive and quasi-exclusive γγ → W+W− production. Upper limits on the anomalous quartic gauge coupling operators a0,CW (dimension-6) and fM0,1,2,3 (dimension-8), the most stringent to date, are derived from the measured dilepton transverse momentum spectrum. | en_US |
dc.publisher | Springer Verlag | en_US |
dc.rights | This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited. | en_US |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | en_US |
dc.title | Evidence for exclusive γγ → W+W− production and constraints on anomalous quartic gauge couplings in pp collisions at s√=7 and 8 TeV | en_US |
dc.type | Article | en_US |
dc.identifier.doi | 10.1007/JHEP08(2016)119 | en_US |
kusw.oaversion | Scholarly/refereed, publisher version | en_US |
kusw.oapolicy | This item meets KU Open Access policy criteria. | en_US |
dc.rights.accessrights | openAccess | |