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Observation of Tree-Level B Decays with ss¯ Production from Gluon Radiation

Aubert, B. et al. (2008) Observation of Tree-Level B Decays with ss¯ Production from Gluon Radiation. Physical Review Letters, 100 (17). p. 171803. ISSN 0031-9007

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Abstract

We report on our search for decays proceeding via a tree-level b→c quark transition in which a gluon radiates into an ss̅ pair. We present observations of the decays B-→Ds(*)+K-π- and B̅ 0→Ds+KS0π- and evidence for B-→Ds+K-K- and set upper limits on the branching fractions for B̅ 0→Ds*+KS0π- and B-→Ds*+K-K- using 383×106 Υ(4S)→BB̅ events collected by the BABAR detector at SLAC. We present evidence that the invariant mass distributions of Ds(*)+K- pairs from B-→Ds(*)+K-π- decays are inconsistent with the phase-space model, suggesting the presence of charm resonances lying below the Ds(*)+K- threshold.

Item Type: Article
Subjects: Q Science > QC Physics
Schools: School of Applied Sciences
Depositing User: Sharon Beastall
Date Deposited: 01 Apr 2011 11:07
Last Modified: 01 Apr 2011 11:07
URI: http://eprints.hud.ac.uk/id/eprint/10006

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