We searched for scalar bottom quarks in 156 pb(-1) of (P) over barp collisions at root 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/c(2), respectively.

A., A., D., A., J., A., T., A., T., A., M. G., A., et al. (2006). Search for scalar bottom quarks from gluino decays in (p)over-barp collisions at root s=1.96 TeV. PHYSICAL REVIEW LETTERS, 96(17) [10.1103/PhysRevLett.96.171802].

Search for scalar bottom quarks from gluino decays in (p)over-barp collisions at root s=1.96 TeV

PAOLETTI, RICCARDO;
2006-01-01

Abstract

We searched for scalar bottom quarks in 156 pb(-1) of (P) over barp collisions at root 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/c(2), respectively.
2006
A., A., D., A., J., A., T., A., T., A., M. G., A., et al. (2006). Search for scalar bottom quarks from gluino decays in (p)over-barp collisions at root s=1.96 TeV. PHYSICAL REVIEW LETTERS, 96(17) [10.1103/PhysRevLett.96.171802].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11365/39186
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