Search for the supersymmetric partner of the top quark inpp¯collisions ats=1.96 TeV

Citations Over TimeTop 10% of 2010 papers

Abstract

We present a search for the lightest supersymmetric partner of the top quark in proton-antiproton collisions at a center-of-mass energy $\sqrt{s}=1.96\text{ }\text{ }\mathrm{TeV}$. 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 $1\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ 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 $180\text{ }\text{ }\mathrm{GeV}/{c}^{2}$ are excluded for sneutrino masses around $45\text{ }\text{ }\mathrm{GeV}/{c}^{2}$, and sneutrino masses up to $116\text{ }\text{ }\mathrm{GeV}/{c}^{2}$ are excluded for stop quark masses around $150\text{ }\text{ }\mathrm{GeV}/{c}^{2}$.

Related Papers

• → Top Quark Mass Measurements at CDF(2006)2 cited
• A search for supersymmetry via chargino-neutralino production in low-transverse momentum dimuon channel with the Collider Detector at Fermilab(2007)
• → A search for chargino-neutralino production at the Fermilab Tevatron Collider(1997)