Searches for Scalar Leptoquarks in pp Collisions at √s̅ = 8 TeV with the ATLAS Detector


Searches for pair-produced scalar leptoquarks are performed using 20 fb⁻¹ of proton–proton collision data provided by the LHC and recorded by the ATLAS detector at √s̅ = 8 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 bν_τ bν̅_τ and tν_τ tν̅_τ 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 m_{LQ1} < 1050 GeV for first-generation leptoquarks, m_{LQ2} < 1000 GeV for second-generation leptoquarks, m_{LQ3} < 625 GeV for third-generation leptoquarks in the bν_τ bν̅_τ channel, and 200 < m_{LQ3} < 640 GeV in the tν_τ tν̅_τ channel.



Uncertainty, Interval analysis (Mathematics), Transverse momentum, Quarks, Proton-proton interactions


CC BY 4.0 (Attribution), ©2015 CERN, for the ATLAS Collaboration