Search for Scalar Bottom Quarks from Gluino Decays in <em>pp</em> Collisions at s√=1.96  TeV

CDF Collaboration

doi:10.1103/PhysRevLett.96.171802

Scientific article

English

Search for Scalar Bottom Quarks from Gluino Decays in pp Collisions at s√=1.96 TeV

Contributors

CDF Collaboration

Collaborators

Campanelli, Mario; Clark, Allan Geoffrey; D'Onofrio, Monica; Donega, Mauro; Lister, Alison; Liu, Yanwen; Vallecorsa, Sofia; Wu, Xin

Published in

Physical review letters, vol. 96, no. 17, 171802

Publication date

2006

Abstract

We searched for scalar bottom quarks in 156 pb−1 of pp collisions at s√=1.96 TeV recorded by the Collider Detector at Fermilab 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.

UNIGE affiliation entities

Faculté des sciences / Section de physique / Département de physique nucléaire et corpusculaire

Citation (ISO format)

CDF Collaboration. Search for Scalar Bottom Quarks from Gluino Decays in pp Collisions at s√=1.96 TeV. In: Physical review letters, 2006, vol. 96, n° 17, p. 171802. doi: 10.1103/PhysRevLett.96.171802

Article (Published version)

Identifiers

PID : unige:38320
DOI : 10.1103/PhysRevLett.96.171802

Additional URL for this publication

http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.96.171802

Journal ISSN

0031-9007

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