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Measurement of the ${{\mathrm{W} }^{+} }\mathrm{W}^{-} $ cross section in pp collisions at $\sqrt{s} =$ 8 TeV and limits on anomalous gauge couplings

2016-07-15Journal article Open access
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dc.contributor.authorCMS collaboration (2315 authors)
dc.contributor.authorHollar, Jonathan
dc.contributor.authorCalpas, Betty
dc.contributor.authorNayak, Aruna
dc.contributor.authorBargassa, Pedrame
dc.contributor.authorBeirão Da Cruz E Silva, Cristóvão
dc.contributor.authorDi Francesco, Agostino
dc.contributor.authorFaccioli, Pietro
dc.contributor.authorFerreira Parracho, Pedro Guilherme
dc.contributor.authorGallinaro, Michele
dc.contributor.authorLeonardo, Nuno
dc.contributor.authorLloret Iglesias, Lara
dc.contributor.authorNguyen, Federico
dc.contributor.authorRodrigues Antunes, Joao
dc.contributor.authorSeixas, Joao
dc.contributor.authorToldaiev, Oleksii
dc.contributor.authorVadruccio, Daniele
dc.contributor.authorVarela, Joao
dc.contributor.authorVischia, Pietro
dc.contributor.authorDavid Tinoco Mendes, Andre
dc.contributor.authorSilva, Pedro
dc.contributor.authorMusella, Pasquale
dc.contributor.authorPela, Joao
dc.date.accessioned2019-02-04T07:23:39Z
dc.date.available2019-02-04T07:23:39Z
dc.date.issued2016-07-15
dc.date.updated2019-02-04T07:23:39Z
dc.description.abstractA measurement of the W boson pair production cross section in proton-proton collisions at $\sqrt{s} = 8$  TeV is presented. The data collected with the CMS detector at the LHC correspond to an integrated luminosity of 19.4 $\,\text {fb}^\text {-1}$ . The ${{\mathrm{W} }^{+} }\mathrm{W}^{-} $ candidates are selected from events with two charged leptons, electrons or muons, and large missing transverse energy. The measured ${{\mathrm{W} }^{+} }\mathrm{W}^{-} $ cross section is $60.1\pm 0.9\,\text {(stat)} \pm 3.2\,\text {(exp)} \pm 3.1\,\text {(theo)} \pm 1.6\,\text {(lumi)} \text {\,pb} = 60.1\pm 4.8\text {\,pb} $ , consistent with the standard model prediction. The ${{\mathrm{W} }^{+} }\mathrm{W}^{-} $ cross sections are also measured in two different fiducial phase space regions. The normalized differential cross section is measured as a function of kinematic variables of the final-state charged leptons and compared with several perturbative QCD predictions. Limits on anomalous gauge couplings associated with dimension-six operators are also given in the framework of an effective field theory. The corresponding 95 % confidence level intervals are $-5.7< c_{\mathrm {WWW}}/\Lambda ^2 < 5.9\,\mathrm{TeV}^{-2}$ , $-11.4< c_{\mathrm {W}}/\Lambda ^2 < 5.4\,\mathrm{TeV}^{-2}$ , $-29.2< c_{\mathrm {B}}/\Lambda ^2 < 23.9\,\mathrm{TeV}^{-2}$ , in the HISZ basis.
dc.description.versionPeer Reviewed
dc.identifierEur.Phys.J. C76 (2016) 401; DOI 10.1140/epjc/s10052-016-4219-1
dc.identifier.urihttp://dx.doi.org/10.1140/epjc/s10052-016-4219-1
dc.identifier.urihttp://hdl.handle.net/10400.26/26882
dc.language.isoeng
dc.titleMeasurement of the ${{\mathrm{W} }^{+} }\mathrm{W}^{-} $ cross section in pp collisions at $\sqrt{s} =$ 8 TeV and limits on anomalous gauge couplings
dc.typejournal article
dspace.entity.typePublication
rcaap.rightsopenAccesspt
rcaap.typearticle

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