Search for the Supersymmetric Partner of the Top Quark in $p\bar{p}$ Collisions at $\sqrt{s}$ = 1.96 TeV - INSPIRE

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Search for the Supersymmetric Partner of the Top Quark in $p\bar{p}$ Collisions at $\sqrt{s}$ = 1.96 TeV

CDF

Collaboration

Sep, 2010

17 pages

Published in:

Phys.Rev.D 82 (2010) 092001

e-Print:

1009.0266 [hep-ex]

DOI:

10.1103/PhysRevD.82.092001

Report number:

FERMILAB-PUB-10-347-E

Experiments:

FNAL-E-0830

View in:

reference search37 citations

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Abstract: (arXiv)

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 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 1fb^-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/c^2 are excluded for sneutrino masses around 45 GeV/c^2, and sneutrino masses up to 116 GeV/c^2 are excluded for stop quark masses around 150 GeV/c^2.

Note:

17 pages, 11 figures. Revised with better quality of figures, minor change to references, To be published in Phys. Rev. D

13.85.Rm
12.60.Jv
14.80.Ly
sneutrino: mass
stop: mass
stop: decay
supersymmetry: minimal
transverse energy: missing-energy
R parity: invariance
CDF

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Figures(38)

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