Search for anomalous production of events with same-sign dileptons and b-jets in 14.3 fb-1 of pp collisions at sqrt(s)=8 TeV with the ATLAS detector

Description
A search is presented for exotic processes that result in final states containing jets including at least one b-jet, sizable missing transverse momentum, and a pair of leptons with the same electric charge. There are several models that predict an enhanced rate of production of such events beyond the expectations of the Standard Model (SM); the ones considered are pair production of chiral b' quarks, pair production of vector-like quarks, enhanced four top quark production and production of two positively-charged top quarks. There will be illustrated the techniques used to analyze the 14.3 fb-1 of pp collisions data, collected at sqrt(s)=8 TeV with the ATLAS detector. No significant excess of events over the background expectation is observed, and limits are set at the 95% confidence level on the different signal hypothesis.
Material: Slides
Organised by Alessia Tricomi and Salvatore Costa