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Search for new physics in events with same-sign dileptons and jets in pp collisions at sqrt(s)=8 TeV

Abstract : A search for new physics is performed based on events with jets and a pair of isolated, same-sign leptons. The results are obtained using a sample of proton-proton collision data collected by the CMS experiment at a centre-of-mass energy of 8 TeV at the LHC, corresponding to an integrated luminosity of 19.5 inverse femtobarns. In order to be sensitive to a wide variety of possible signals beyond the standard model, multiple search regions defined by the missing transverse energy, the hadronic energy, the number of jets and b-quark jets, and the transverse momenta of the leptons in the events are considered. No excess above the standard model background expectation is observed and constraints are set on a number of models for new physics, as well as on the same-sign top-quark pair and quadruple-top-quark production cross sections. Information on event selection efficiencies is also provided, so that the results can be used to confront an even broader class of new physics models.
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http://hal.in2p3.fr/in2p3-00909841
Contributor : Sylvie Flores <>
Submitted on : Wednesday, November 27, 2013 - 7:23:47 AM
Last modification on : Wednesday, November 25, 2020 - 4:10:43 PM

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S. Chatrchyan, S. Baffioni, F. Beaudette, P. Busson, C. Charlot, et al.. Search for new physics in events with same-sign dileptons and jets in pp collisions at sqrt(s)=8 TeV. Journal of High Energy Physics, Springer, 2014, 01(2014), pp.163. ⟨10.1007/JHEP01(2014)163⟩. ⟨in2p3-00909841⟩

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