Search for the supersymmetric partner of the top quark in ppbar collisions at sqrt(s) = 1.96 TeV

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We present a search for the lightest supersymmetric partner of the top quark in proton-antiproton collisions at a center-of-mass energy {radical}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{sup -1} collected by the CDF experiment. No significant evidence of a stop quark signal was found. ... continued below

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17 pages

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Aaltonen, T.; Phys., /Helsinki Inst. of; Alvarez Gonzalez, B.; Phys., /Oviedo U. /Cantabria Inst. of; Amerio, S.; /INFN, Padua et al. September 1, 2010.

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We present a search for the lightest supersymmetric partner of the top quark in proton-antiproton collisions at a center-of-mass energy {radical}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{sup -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{sup 2} are excluded for sneutrino masses around 45 GeV/c{sup 2}, and sneutrino masses up to 116 GeV/c{sup 2} are excluded for stop quark masses around 150 GeV/c{sup 2}.

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17 pages

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  • Journal Name: Phys.Rev.D82:092001,2010; Journal Volume: 82; Journal Issue: 9

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  • Report No.: FERMILAB-PUB-10-347-E
  • Grant Number: AC02-07CH11359
  • DOI: 10.1103/PhysRevD.82.092001 | External Link
  • Office of Scientific & Technical Information Report Number: 986973
  • Archival Resource Key: ark:/67531/metadc1015791

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  • September 1, 2010

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  • Oct. 14, 2017, 8:36 a.m.

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  • Oct. 25, 2017, 4:16 p.m.

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Aaltonen, T.; Phys., /Helsinki Inst. of; Alvarez Gonzalez, B.; Phys., /Oviedo U. /Cantabria Inst. of; Amerio, S.; /INFN, Padua et al. Search for the supersymmetric partner of the top quark in ppbar collisions at sqrt(s) = 1.96 TeV, article, September 1, 2010; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc1015791/: accessed July 16, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.