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Searches for direct pair production of supersymmetric top and supersymmetric bottom quarks in p(p)over-tilde collisions at root s=1.96 TeV

Aaltonen T.
•
Abulencia A.
•
Adelman J.
altro
Zucchelli S.
2007
  • journal article

Periodico
PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY
Abstract
We search for direct pair production of supersymmetric top quarks and supersymmetric bottom quarks in proton-antiproton collisions at root s=1.96 TeV, using 295 pb(-1) of data recorded by the Collider Detector at Fermilab (CDF II) experiment. The supersymmetric top (supersymmetric bottom) quarks are selected by reconstructing their decay into a charm (bottom) quark and a neutralino, which is assumed to be the lightest supersymmetric particle. The signature of such processes is two energetic heavy-flavor jets and missing transverse energy. The number of events that pass our selection for each search process is consistent with the expected standard model background. By comparing our results to the theoretical production cross sections of the supersymmetric top and supersymmetric bottom quarks in the minimal supersymmetric standard model, we exclude, at a 95% confidence level in the frame of that model, a supersymmetric top quark mass up to 132 GeV/c(2) for a neutralino mass of 48 GeV/c(2), and a supersymmetric bottom quark mass up to 193 GeV/c(2) for a neutralino mass of 40 GeV/c(2).
DOI
10.1103/PhysRevD.76.072010
WOS
WOS:000250621200015
Archivio
http://hdl.handle.net/11390/884378
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-35548967881
Diritti
metadata only access
Web of Science© citazioni
32
Data di acquisizione
Mar 25, 2024
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