Search for the supersymmetric partner of the top quark in pp̅ collisions at √s=1.96 TeV
Name
Aaltonen-2010-Search for the super.pdf
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Author(s)
Gomez-Ceballos, Guillelmo
Goncharov, Maxim
Makhoul, Khaldoun
Paus, Christoph M. E.
Bauer, Gerry P
Date Issued
November 2010
Journal
Physical Review D
Publisher
American Physical Society
Citation
Aaltonen, T. et al. “Search for the supersymmetric partner of the top quark in pp[over ¯] collisions at sqrt[s]=1.96 TeV.” Physical Review D 82.9 (2010) : n. pag. © 2010 The American Physical Society
Version
Final published version
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 [square root of 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 [fb superscript -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 [GeV/c superscript 2] are excluded for sneutrino masses around 45 GeV/c2 [GeV/c superscript 2], and sneutrino masses up to 116 GeV/c2 [GeV/c superscript 2] are excluded for stop quark masses around 150 GeV/c2 [GeV/c superscript 2].
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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DOI of Published Version
https://doi.org/10.1103/PhysRevD.82.092001
