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

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    Searches for pair-produced scalar leptoquarks are performed using 20 fb1^{-1} of proton-proton collision data provided by the LHC and recorded by the ATLAS detector at s=8\sqrt{s}=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 bντbˉντˉb\nu_{\tau}\bar{b}\bar{\nu_{\tau}} and tντtˉντˉt\nu_{\tau}\bar{t}\bar{\nu_{\tau}} 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 mLQ1m_{\mathrm{LQ1}} < 1050 GeV for first-generation leptoquarks, mLQ2m_{\mathrm{LQ2}} < 1000 GeV for second-generation leptoquarks, mLQ3<m_{\mathrm{LQ3}} < 625 GeV for third-generation leptoquarks in the bντbˉντˉb\nu_{\tau}\bar{b}\bar{\nu_{\tau}} channel, and 200 <mLQ3<< m_{\mathrm{LQ3}} < 640 GeV in the tντtˉντˉt\nu_{\tau}\bar{t}\bar{\nu_{\tau}} channel.Comment: 25 pages plus author list + cover pages (42 pages total), 6 figures, 8 tables, submitted to EPJC, All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/EXOT-2014-03
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