literature

Search for Pair Production of Supersymmetric Top Quarks in Dilepton Events from p anti-p Collisions at S**(1/2) = 1.96 TeV

Collaboration
Dec, 2009
8 pages
Published in:
  • Phys.Rev.Lett. 104 (2010) 251801
e-Print:
Report number:
  • FERMILAB-PUB-09-614-E
Experiments:

Citations per year

20102014201820222024051015
Abstract: (arXiv)
We present the results of a search for pair production of the supersymmetric partner of the top quark (the stop quark t~1\tilde{t}_{1}) decaying to a bb-quark and a chargino \chargino with a subsequent \chargino decay into a neutralino \neutralino, lepton \ell, and neutrino ν\nu. Using a data sample corresponding to 2.7 fb1^{-1} of integrated luminosity of ppˉp\bar{p} collisions at s=1.96\sqrt{s} = 1.96 TeV collected by the CDF II detector, we reconstruct the mass of candidate stop events and fit the observed mass spectrum to a combination of standard model processes and stop quark signal. We find no evidence for \pairstop production and set 95% C.L. limits on the masses of the stop quark and the neutralino for several values of the chargino mass and the branching ratio {\cal B}(\chargino\to\neutralino\ell^{\pm}\nu).
Note:
  • Accepted to Phys. Rev. Lett
  • 12.60.Jv
  • 14.80.Ly
  • 14.65.Ha
  • anti-p p: interaction
  • chargino: mass
  • stop: pair production
  • stop: mass
  • neutralino: mass
  • chargino: branching ratio
  • supersymmetry