We searched for scalar bottom quarks in 156pb-1 of p̄p collisions at s=1.96TeV 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 240GeV/c2, respectively. © 2006 The American Physical Society.
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1103/PhysRevLett.96.171802|
|Codice identificativo ISI:||WOS:000237321500009|
|Codice identificativo Scopus:||2-s2.0-33646409558|
|Titolo:||Search for scalar bottom quarks from gluino decays in p̄p collisions at √s=1.96TeV|
|Appare nelle tipologie:||1.1 Articolo in rivista|