# Searches for scalar leptoquarks in $pp$ collisions at $\sqrt{s}$ = 8 TeV with the ATLAS detector

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 $\sqrt{s}=8$ 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 $b\nu_{\tau}\bar{b}\bar{\nu_{\tau}}$ and $t\nu_{\tau}\bar{t}\bar{\nu_{\tau}}$ 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 $m_{\mathrm{LQ1}}$ < 1050 GeV for first-generation leptoquarks, $m_{\mathrm{LQ2}}$ < 1000 GeV for second-generation leptoquarks, $m_{\mathrm{LQ3}} <$ 625 GeV for third-generation leptoquarks in the $b\nu_{\tau}\bar{b}\bar{\nu_{\tau}}$ channel, and 200 $< m_{\mathrm{LQ3}} <$ 640 GeV in the $t\nu_{\tau}\bar{t}\bar{\nu_{\tau}}$ channel.
Document type :
Journal articles

http://hal.in2p3.fr/in2p3-01185532
Contributor : Claudine Bombar <>
Submitted on : Thursday, August 20, 2015 - 3:18:41 PM
Last modification on : Tuesday, November 5, 2019 - 4:32:43 PM

### Citation

G. Aad, Z. Barnovska, N. Berger, M. Delmastro, L. Di Ciaccio, et al.. Searches for scalar leptoquarks in $pp$ collisions at $\sqrt{s}$ = 8 TeV with the ATLAS detector. European Physical Journal C: Particles and Fields, Springer Verlag (Germany), 2016, 76, pp.5. ⟨10.1140/epjc/s10052-015-3823-9⟩. ⟨in2p3-01185532⟩

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