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Title

Search for direct production of charginos and neutralinos in events with three leptons and missing transverse momentum in √s = 8 TeV pp collisions with the ATLAS detector

CollaborationWith : Alexandre, Gauthier / Barone, Gaetano / Bell, Paul / Bell, William / Benhar Noccioli, Eleonora / Bilbao De Mendizabal, Javier / Bucci, Francesca / Camacho Toro, Reina / Clark, Allan Geoffrey / Delitzsch, Chris Malena / Della Volpe, Domenico / Doglioni, Caterina / Ferrere, Didier / Gadomski, Szymon / Gonzalez Sevilla, Sergio / Goulette, Marc / Gramling, Johanna Léna / Guescini, Francesco / Iacobucci, Giuseppe / Katre, Akshay / La Rosa, Alessandro / Mermod, Philippe / Miucci, Antonio / Mora Herrera, Maria Clemencia Rosario / Muenstermann, Daniel / Nektarijevic, Snezana / Nikolics, Katalin / Pásztor, G. / Picazio, Attilio / Pohl, Martin / Rosbach, Kilian / Vallecorsa, Sofia / Wu, Xin
Published in Journal of High Energy Physics. 2014, vol. 1404, p. 169-215
Collection SCOAP3
Abstract A search for the direct production of charginos and neutralinos in final states with three leptons and missing transverse momentum is presented. The analysis is based on 20.3 fb −1 of √s = 8 TeV proton-proton collision data delivered by the Large Hadron Collider and recorded with the ATLAS detector. Observations are consistent with the Standard Model expectations and limits are set in R -parity-conserving phenomenological Minimal Supersymmetric Standard Models and in simplified supersymmetric models, significantly extending previous results. For simplified supersymmetric models of direct chargino $ \left( {\widetilde{\chi}_1^{\pm }} \right) $ and next-to-lightest neutralino $ \left( {\widetilde{\chi}_2^0} \right) $ production with decays to lightest neutralino $ \left( {\widetilde{\chi}_1^0} \right) $ via either all three generations of sleptons, staus only, gauge bosons, or Higgs bosons, $ \left( {\widetilde{\chi}_1^{\pm }} \right) $ and $ \left( {\widetilde{\chi}_2^0} \right) $ masses are excluded up to 700 GeV, 380 GeV, 345 GeV, or 148 GeV respectively, for a massless $ \left( {\widetilde{\chi}_1^0} \right) $ .
Keywords Hadron-Hadron Scattering
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arXiv: 1402.7029
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ATLAS COLLABORATION. Search for direct production of charginos and neutralinos in events with three leptons and missing transverse momentum in √s = 8 TeV pp collisions with the ATLAS detector. In: Journal of High Energy Physics, 2014, vol. 1404, p. 169-215. https://archive-ouverte.unige.ch/unige:55806

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Deposited on : 2015-04-27

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