2012/05/31 by S. Chatrchyan, CMS Collaboration, V. Khachatryan +98
Physics and Astronomy · #Cosmology and Gravitation Theories #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #hep-ex
paper · pdf · doi:10.1103/physrevlett.109.071803
published as Phys. Rev. Lett. 109, 071803 (2012) · Published in Physical Review Letters
openalex publication_date 2012/08/16 · arxiv created 2013/01/25 · arxiv updated 2013/01/28 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/04
A search for new physics is performed in events with two same-sign isolated leptons, hadronic jets, and missing transverse energy in the final state. The analysis is based on a data sample corresponding to an integrated luminosity of 4.98 fb(-1) produced in pp collisions at a center-of-mass energy of 7 TeV collected by the CMS experiment at the LHC. This constitutes a factor of 140 increase in integrated luminosity over previously published results. The observed yields agree with the standard model predictions and thus no evidence for new physics is found. The observations are used to set upper limits on possible new physics contributions and to constrain supersymmetric models. To facilitate the interpretation of the data in a broader range of new physics scenarios, information on the event selection, detector response, and efficiencies is provided.