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Title

Search for a Supersymmetric Partner to the Top Quark in Final States with Jets and Missing Transverse Momentum at √s=7  TeV with the ATLAS Detector

CollaborationWith : Abdelalim Aly, Ahmed Aly / Alexandre, Gauthier / Backes, Moritz / Barone, Gaetano / Bell, Paul / Bell, William / Benhar Noccioli, Eleonora / Blondel, Alain / Bucci, Francesca / Clark, Allan Geoffrey / Dao, Valerio / Doglioni, Caterina / Ferrere, Didier / Gadomski, Szymon / Gonzalez Sevilla, Sergio / Goulette, Marc / Iacobucci, Giuseppe / La Rosa, Alessandro / Lister, Alison / Martin Dit Latour, Bertrand / Mermod, Philippe / Mora Herrera, Maria Clemencia Rosario / Nektarijevic, Snezana / Nikolics, Katalin / Pasztor, Arpad / Picazio, Attilio / Pohl, Martin / Rosbach, Kilian / Rosselet, Laurent / Wu, Xin
Published in Physical Review Letters. 2012, vol. 109, no. 21, p. 211802
Abstract A search for direct pair production of supersymmetric top squarks (t˜1) is presented, assuming the t˜1 decays into a top quark and the lightest supersymmetric particle, χ˜01, and that both top quarks decay to purely hadronic final states. A total of 16 (4) events are observed compared to a predicted standard model background of 13.5+3.7−3.6(4.4+1.7−1.3) events in two signal regions based on ∫Ldt=4.7  fb−1 of pp collision data taken at s√=7  TeV with the ATLAS detector at the LHC. An exclusion region in the t˜1 versus χ˜01 mass plane is evaluated: 370<mt˜1<465  GeV is excluded for mχ˜01∼0  GeV while mt˜1=445  GeV is excluded for mχ˜01≤50  GeV.
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ATLAS COLLABORATION. Search for a Supersymmetric Partner to the Top Quark in Final States with Jets and Missing Transverse Momentum at √s=7  TeV with the ATLAS Detector. In: Physical Review Letters, 2012, vol. 109, n° 21, p. 211802. https://archive-ouverte.unige.ch/unige:39983

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Deposited on : 2014-09-05

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