Searches for scalar leptoquarks in pp collisions at s√s√ = 8 TeV with the ATLAS detector

Abstract

Ajuts: We thank CERN for the very successful operation of the LHC, as well as the support staff from our institutions without whom ATLAS could not be operated efficiently. We acknowledge the support of MINECO, Spain and EPLANET, ERC, ERDF, FP7, Horizon 2020 and Marie Skłodowska-Curie Actions, European Union. Funded by SCOAP3. ; Searches for pair-produced scalar leptoquarks are performed using 20 fb of proton-proton collision data provided by the LHC and recorded by the ATLAS detector at TeV. Events with two electrons (muons) and two or more jets in the final state are used to search for first (second)-generation leptoquarks. The results from two previously published ATLAS analyses are interpreted in terms of third-generation leptoquarks decaying to and final states. No statistically significant excess above the Standard Model expectation is observed in any channel and scalar leptoquarks are excluded at 95 % CL with masses up to 1050 GeV for first-generation leptoquarks, 1000 GeV for second-generation leptoquarks, 625 GeV for third-generation leptoquarks in the channel, and 200 640 GeV in the channel.