Searches for pair-produced scalar leptoquarks are performed using 20 fb$$^-1$$-1 of proton–proton collision data provided by the LHC and recorded by the ATLAS detector at $$sqrts=8$$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 $$b u _ au arbar u _ au $$bντb¯ντ¯ and $$t u _ au artar u _ au $$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 $$m_mathrm LQ1<$$mLQ1< 1050 GeV for first-generation leptoquarks, $$m_mathrm LQ2<$$mLQ2< 1000 GeV for second-generation leptoquarks, $$m_mathrm LQ3<$$mLQ3< 625 GeV for third-generation leptoquarks in the $$b u _ au arbar u _ au $$bντb¯ντ¯ channel, and 200 $$< m_mathrm LQ3< $$< 640 GeV in the $$t u _ au artar u _ au $$tντt¯ντ¯ channel.

ATLAS Collaboration, N., Aad, G., Abbott, B., Abdallah, J., Abdinov, O., Aben, R., et al. (2016). Searches for scalar leptoquarks in pp collisions at √s = 8 TeV with the ATLAS detector. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 76(1), 1-28 [10.1140/epjc/s10052-015-3823-9].

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

ALBERGHI, GIAN LUIGI;BELLAGAMBA, LORENZO;BIONDI, SILVIA;BOSCHERINI, DAVIDE;BRUNI, ALESSIA;BRUNI, GRAZIANO;DE CASTRO, STEFANO;FABBRI, LAURA;FRANCHINI, MATTEO;GABRIELLI, ALESSANDRO;GIACOBBE, BENEDETTO;LASAGNI MANGHI, FEDERICO;MASSA, LORENZO;MENGARELLI, ALBERTO;POLINI, ALESSANDRO;RINALDI, LORENZO;ROMANO, MARINO;SBARRA, CARLA;SEMPRINI CESARI, NICOLA;SIOLI, MAXIMILIANO;SPIGHI, ROBERTO;VALENTINETTI, SARA;VILLA, MAURO;Vivarelli, I.;ZOCCOLI, ANTONIO;
2016

Abstract

Searches for pair-produced scalar leptoquarks are performed using 20 fb$$^-1$$-1 of proton–proton collision data provided by the LHC and recorded by the ATLAS detector at $$sqrts=8$$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 $$b u _ au arbar u _ au $$bντb¯ντ¯ and $$t u _ au artar u _ au $$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 $$m_mathrm LQ1<$$mLQ1< 1050 GeV for first-generation leptoquarks, $$m_mathrm LQ2<$$mLQ2< 1000 GeV for second-generation leptoquarks, $$m_mathrm LQ3<$$mLQ3< 625 GeV for third-generation leptoquarks in the $$b u _ au arbar u _ au $$bντb¯ντ¯ channel, and 200 $$< m_mathrm LQ3< $$< 640 GeV in the $$t u _ au artar u _ au $$tντt¯ντ¯ channel.
2016
ATLAS Collaboration, N., Aad, G., Abbott, B., Abdallah, J., Abdinov, O., Aben, R., et al. (2016). Searches for scalar leptoquarks in pp collisions at √s = 8 TeV with the ATLAS detector. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 76(1), 1-28 [10.1140/epjc/s10052-015-3823-9].
ATLAS Collaboration, Null; Aad, G.; Abbott, B.; Abdallah, J.; Abdinov, O.; Aben, R.; Abolins, M.; Abouzeid, O.S.; Abramowicz, H.; Abreu, H.; Abreu, R....espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/553498
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