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Title

Search for Pair Production of Supersymmetric Top Quarks in Dilepton Events from pp Collisions at s√=1.96  TeV
CollaborationWith : Clark, Allan Geoffrey / Garcia Navarro, Jose Enrique / Vallecorsa, Sofia / Wu, Xin
Published in Physical Review Letters. 2010, vol. 104, no. 25, p. 251801
Abstract We present the results of a search for pair production of the supersymmetric partner of the top quark (the top squark t1) decaying to a b quark and a chargino χ±1 with a subsequent χ±1 decay into a neutralino χ01, lepton ℓ, and neutrino ν. Using a data sample corresponding to 2.7  fb−1 of integrated luminosity of pp collisions at s√=1.96  TeV collected by the CDF II detector, we reconstruct the mass of top squark candidate events and fit the observed mass spectrum to a combination of standard model processes and t1t1 signal. We find no evidence for t1t1 production and set 95% C.L. limits on the masses of the top squark and the neutralino for several values of the chargino mass and the branching ratio B(χ±1→χ01ℓ±ν).
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Article (Published version) (254 Kb) - public document Free access
Other version: http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.104.251801
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Faculté des sciences / Section de physique / Département de physique nucléaire et corpusculaire
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(ISO format) 		CDF COLLABORATION. Search for Pair Production of Supersymmetric Top Quarks in Dilepton Events from pp Collisions at s√=1.96  TeV. In: Physical Review Letters, 2010, vol. 104, n° 25, p. 251801. https://archive-ouverte.unige.ch/unige:38654

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Deposited on : 2014-07-14

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