We present a search for the lightest supersymmetric partner of the top quark in proton-antiproton collisions at a center-of-mass energy s**(1/2) = 1.96 TeV. This search was conducted within the framework of the R-parity conserving minimal supersymmetric extensions 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 CDF 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.

Aaltonen, T., Alvarez Gonzalezv, B., Amerio, S., Amidei, D., Anastassov, A., Annovi, A., et al. (2010). Search for Supersymmetric Partner of the Top Quark in p anti-p Collisions at s**(1/2)=1.96 TeV. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 82, 092001-1-092001-16 [10.1103/PhysRevD.82.092001].

Search for Supersymmetric Partner of the Top Quark in p anti-p Collisions at s**(1/2)=1.96 TeV

CASTRO, ANDREA;DENINNO, MARIA MADDALENA;A. DI CANTO;MARGAROLI, FABRIZIO;MAZZANTI, PAOLO;MOGGI, NICCOLO';MUSSINI, MANUEL;RIMONDI, FRANCO;ZUCCHELLI, STEFANO
2010

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**(1/2) = 1.96 TeV. This search was conducted within the framework of the R-parity conserving minimal supersymmetric extensions 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 CDF 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.
2010
Aaltonen, T., Alvarez Gonzalezv, B., Amerio, S., Amidei, D., Anastassov, A., Annovi, A., et al. (2010). Search for Supersymmetric Partner of the Top Quark in p anti-p Collisions at s**(1/2)=1.96 TeV. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 82, 092001-1-092001-16 [10.1103/PhysRevD.82.092001].
Aaltonen, T.; Alvarez Gonzalezv, B.; Amerio, S.; Amidei, D.; Anastassov, A.; Annovi, A.; Antos, J.; Apollinari, G.; Appel, J. A.; Apresyan, A.; Arisaw...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/98011
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