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Search for new physics in same-sign dilepton events in proton–proton collisions at $\sqrt{s} = 13\,\text {TeV} $

2016-08-05Journal article Open access
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dc.contributor.authorCMS collaboration (2258 authors)
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.authorHollar, Jonathan
dc.contributor.authorLeonardo, Nuno
dc.contributor.authorLloret Iglesias, Lara
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.accessioned2019-02-04T09:55:56Z
dc.date.available2019-02-04T09:55:56Z
dc.date.issued2016-08-05
dc.date.updated2019-02-04T09:55:56Z
dc.description.abstractA search for new physics is performed using events with two isolated same-sign leptons, two or more jets, and missing transverse momentum. The results are based on a sample of proton–proton collisions at a center-of-mass energy of 13 $\,\text {TeV}$ recorded with the CMS detector at the LHC, corresponding to an integrated luminosity of 2.3  $\mathrm{fb}^{1}$ . Multiple search regions are defined by classifying events in terms of missing transverse momentum, the scalar sum of jet transverse momenta, the transverse mass associated with a $\mathrm {W}$ boson candidate, the number of jets, the number of $\mathrm{b} $ quark jets, and the transverse momenta of the leptons in the event. The analysis is sensitive to a wide variety of possible signals beyond the standard model. No excess above the standard model background expectation is observed. Constraints are set on various supersymmetric models, with gluinos and bottom squarks excluded for masses up to 1300 and 680 $\,\text {GeV}$ , respectively, at the 95 % confidence level. Upper limits on the cross sections for the production of two top quark-antiquark pairs (119 $\,\text {fb}$ ) and two same-sign top quarks (1.7 $\,\text {pb}$ ) are also obtained. Selection efficiencies and model independent limits are provided to allow further interpretations of the results.
dc.description.versionPeer Reviewed
dc.identifierEur.Phys.J. C76 (2016) 439; DOI 10.1140/epjc/s10052-016-4261-z
dc.identifier.urihttp://dx.doi.org/10.1140/epjc/s10052-016-4261-z
dc.identifier.urihttp://hdl.handle.net/10400.26/27083
dc.language.isoeng
dc.titleSearch for new physics in same-sign dilepton events in proton–proton collisions at $\sqrt{s} = 13\,\text {TeV} $
dc.typejournal article
dspace.entity.typePublication
rcaap.rightsopenAccesspt
rcaap.typearticle

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