Search For New Physics In Events With Same Sign Dileptons And B Jets In Pp Collisions At Sqrt S

Phenomena Beyond the Standard Model: What Do We Expect for New Physics to Look Like?

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Search for New Physics in Events with Same-sign Dileptons and $b$ Jets in $pp$ Collisions at $\sqrt{s}

Search for New Physics in Events with Same-sign Dileptons and Jets in Pp Collisions at $\sqrt{s}$

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. As a result, 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.