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\section{Introduction}
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\label{sec:intro}
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This note describes a preliminary extension of the CMS~\cite{JINST} search
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for new physics described in Ref.~\cite{Chatrchyan:2012qka}.
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The main difference between this analysis and that of
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Ref.~\cite{Chatrchyan:2012qka} is the center-of-mass
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energy (8 TeV here and 7 TeV in Ref.~\cite{Chatrchyan:2012qka})
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and the integrated luminosity (xx fb$^{-1}$ vs. 4.98 fb$^{-1}$).
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Briefly, the analysis consists in selecting events with two
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isolated, high transverse momentum ($P_T$), same-sign leptons
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($e$ or $\mu$), and at least two b-tagged jets. The event counts
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in a number of ``signal regions'' defined in terms of additional
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requirements on missing transverse energy (\MET), the number of
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b-tagged jets, and the scalar sum of jet $P_T$ ($H_T$), is compared
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with expectations from the standard model (SM). Having found
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no evidence for a beyond the SM contribution to the event count,
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we set limits on the number of events from new physics in the
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event sample. These limits are then used to bound the parameters
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of interesting new physics models. Finally, we also provide
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additional information on the event selection efficiencies to
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allow our results to be reinterpreted in other models of new physics. |
