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Search for the supersymmetric partner of the top quark in pp collisions at s√=1.96  TeV

CollaborationWith : Clark, Allan Geoffrey / Garcia Navarro, Jose Enrique / Lister, Alison / Wu, Xin
Published in Physical Review. D. 2010, vol. 82, no. 09, p. 092001
Abstract We present a search for the lightest supersymmetric partner of the top quark in proton-antiproton collisions at a center-of-mass energy s√=1.96  TeV. This search was conducted within the framework of the R parity conserving minimal supersymmetric extension of the standard model, assuming the stop decays dominantly to a lepton, a sneutrino, and a bottom quark. We searched for events with two oppositely-charged leptons, at least one jet, and missing transverse energy in a data sample corresponding to an integrated luminosity of 1  fb−1 collected by the Collider Detector at Fermilab experiment. No significant evidence of a stop quark signal was found. Exclusion limits at 95% confidence level in the stop quark versus sneutrino mass plane are set. Stop quark masses up to 180  GeV/c2 are excluded for sneutrino masses around 45  GeV/c2, and sneutrino masses up to 116  GeV/c2 are excluded for stop quark masses around 150  GeV/c2.
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CDF COLLABORATION. Search for the supersymmetric partner of the top quark in pp collisions at s√=1.96  TeV. In: Physical Review. D, 2010, vol. 82, n° 09, p. 092001. https://archive-ouverte.unige.ch/unige:38667

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Deposited on : 2014-07-15

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