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

Authors

S. Chatrchyan, Yerevan Physics Institute
Ekaterina Avdeeva, University of Nebraska-LincolnFollow
Kenneth A. Bloom, University of Nebraska - LincolnFollow
S. Bose, University of Nebraska-LincolnFollow
Daniel R. Claes, University of Nebraska-LincolnFollow
Aaron Dominguez, University of Nebraska-LincolnFollow
Rebeca Gonzalez Suarez, University of Nebraska-LincolnFollow
J. Keller, University of Nebraska-LincolnFollow
Ilya Kravchenko, University of Nebraska-LincolnFollow
J. Lazo-Flores, University of Nebraska-LincolnFollow
S. Malik, University of Nebraska-LincolnFollow
F. Meier, University of Nebraska-LincolnFollow
Gregory R. Snow, University of Nebraska-LincolnFollow
CMS collaboration, CMS collaboration

Date of this Version

1-29-2014

Citation

JHEP01(2014)163; doi:10.1007/JHEP01(2014)163

Comments

Copyright © 2014 CERN, issued under CC license; published by Springer.

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 8TeV at the LHC, corresponding to an integrated luminosity of 19.5 fb⁻¹. 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 bquark 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.