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

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Article number5
<mark>Journal publication date</mark>5/01/2016
<mark>Journal</mark>European Physical Journal C: Particles and Fields
Issue number1
Volume76
Number of pages28
StatePublished
Original languageEnglish

Abstract

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 √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 bντb¯ντ¯ and tντt¯ντ¯ 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 mLQ1 < 1050 GeV for first-generation leptoquarks, mLQ2 < 1000 GeV for second-generation leptoquarks, mLQ3 < 625 GeV for third-generation leptoquarks in the bντb¯ντ¯ channel, and 200 < mLQ3 < 640 GeV in the tντt¯ντ¯ channel.