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Search for Scalar Bottom Quarks from Gluino Decays in pp Collisions at s√=1.96  TeV

CollaborationWith : Campanelli, Mario / Clark, Allan Geoffrey / D'Onofrio, Monica / Donega, Mauro / Lister, Alison / Liu, Yanwen / Vallecorsa, Sofia / Wu, Xin
Published in Physical Review Letters. 2006, vol. 96, no. 17, p. 171802
Abstract We searched for scalar bottom quarks in 156  pb−1 of pp collisions at s√=1.96  TeV recorded by the Collider Detector at Fermilab II experiment at the Tevatron. Scalar bottom quarks can be produced from gluino decays in R-parity conserving models of supersymmetry when the mass of the gluino exceeds that of the scalar bottom quark. Then, a scalar bottom quark can decay into a bottom quark and a neutralino. To search for this scenario, we investigated events with large missing transverse energy and at least three jets, two or more of which were identified as containing a secondary vertex from the hadronization of b quarks. We found four candidate events, where 2.6±0.7 are expected from standard model processes, and placed 95% confidence level lower limits on gluino and scalar bottom quark masses of up to 280 and 240  GeV/c2, respectively.
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CDF COLLABORATION. Search for Scalar Bottom Quarks from Gluino Decays in pp Collisions at s√=1.96  TeV. In: Physical Review Letters, 2006, vol. 96, n° 17, p. 171802. doi: 10.1103/PhysRevLett.96.171802 https://archive-ouverte.unige.ch/unige:38320

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Deposited on : 2014-06-30

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