Search for new physics in events with same-sign dileptons and b-tagged jets in pp collisions at sqrt(s) = 7 TeV

TL;DR

This paper reports a search for new physics in proton-proton collisions at 7 TeV, focusing on events with same-sign dileptons and b-tagged jets, setting limits on non-standard-model contributions.

Contribution

The study provides the first constraints on new physics models using same-sign dileptons with b-jets at 7 TeV, including detailed acceptance and efficiency data.

Findings

No excess above standard model background observed

Upper limits set on non-standard-model event rates

Constraints provided for various new physics models

Abstract

A search for new physics is performed using isolated same-sign dileptons with at least two b-quark jets in the final state. Results are based on a 4.98 inverse femtobarn sample of proton-proton collisions at a centre-of-mass energy of 7 TeV collected by the CMS detector. No excess above the standard model background is observed. Upper limits at 95% confidence level are set on the number of events from non-standard-model sources. These limits are used to set constraints on a number of new physics models. Information on acceptance and efficiencies are also provided so that the results can be used to confront additional models in an approximate way.