dc.contributor.author |
CMS Collaboration |
en_US |
dc.contributor.author |
Khachatryan, V. |
en_US |
dc.contributor.author |
CHAUHAN, S. |
en_US |
dc.contributor.author |
DUBE, SOURABH |
en_US |
dc.contributor.author |
KAPOOR, A. |
en_US |
dc.contributor.author |
KOTHEKAR, K. |
en_US |
dc.contributor.author |
RANE, A. |
en_US |
dc.contributor.author |
SHARMA, SEEMA et al. |
en_US |
dc.date.accessioned |
2019-04-29T10:18:23Z |
|
dc.date.available |
2019-04-29T10:18:23Z |
|
dc.date.issued |
2016-08 |
en_US |
dc.identifier.citation |
Journal of High Energy Physics, 2016(119). |
en_US |
dc.identifier.issn |
1126-6708 |
en_US |
dc.identifier.issn |
1029-8479 |
en_US |
dc.identifier.uri |
http://dr.iiserpune.ac.in:8080/xmlui/handle/123456789/2790 |
|
dc.identifier.uri |
https://doi.org/10.1007/JHEP08(2016)119 |
en_US |
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 p T(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 a W0,C (dimension-6) and f M0,1,2,3 (dimension-8), the most stringent to date, are derived from the measured dilepton transverse momentum spectrum. |
en_US |
dc.language.iso |
en |
en_US |
dc.publisher |
Springer Nature |
en_US |
dc.subject |
Evidence for exclusive |
en_US |
dc.subject |
Constraints on anomalous |
en_US |
dc.subject |
Quartic gauge couplings |
en_US |
dc.subject |
Forward physics |
en_US |
dc.subject |
Hadron-Hadron scattering |
en_US |
dc.subject |
Experiments |
en_US |
dc.subject |
2016 |
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.contributor.department |
Dept. of Physics |
en_US |
dc.identifier.sourcetitle |
Journal of High Energy Physics |
en_US |
dc.publication.originofpublisher |
Foreign |
en_US |