A Search for Scalar Bottom Quarks from Gluino Decays in Anti-p P Collisions at S**1/2

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  • A Search for Scalar Bottom Quarks from Gluino Decays in Anti-p P Collisions at S**1/2 Book Detail

  • Author :
  • Release Date : 2005
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  • Pages : 7
  • ISBN 13 :
  • File Size : 23,23 MB
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A Search for Scalar Bottom Quarks from Gluino Decays in Anti-p P Collisions at S**1/2 by PDF Summary

Book Description: We searched for scalar bottom quarks in 156 pb−1 of {bar p}p collisions at √s = 1.96 TeV recorded by the CDF II experiment at the Tevatron. Scalar bottom quarks can be produced from gluino decays in R-parity conserving models of supersymmetry when the mass of the gluino exceeds that of the scalar bottom quark. Then, a scalar bottom quark can decay into a bottom quark and a neutralino. To search for this scenario, we investigated events with large missing transverse energy and at least three jets, two or more of which were identified as containing a secondary vertex from the hadronization of b quarks. We found four candidate events, where 2.6 ± 0.7 are expected from standard model processes, and placed 95% confidence level lower limits on gluino and scalar bottom quark masses of up to 280 and 240 GeV/c2 , respectively.

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