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http://hdl.handle.net/2445/138443
Title: | Observation of Tree-Level B Decays with s¯s Production from Gluon Radiation |
Author: | Garra Ticó, Jordi Graugés Pous, Eugeni BABAR Collaboration |
Keywords: | Física de partícules Experiments Particle physics Experiments |
Issue Date: | 2-May-2008 |
Publisher: | American Physical Society |
Abstract: | We report on our search for decays proceeding via a tree-level b → c quark transition in which a gluon radiates into an s ¯ s pair. We present observations of the decays B − → D ( * ) + s K − π − and ¯¯¯ B 0 → D + s K 0 S π − and evidence for B − → D + s K − K − and set upper limits on the branching fractions for ¯¯¯ B 0 → D * + s K 0 S π − and B − → D * + s K − K − using 383 × 10 6 Υ ( 4 S ) → B ¯¯¯ B events collected by the BABAR detector at SLAC. We present evidence that the invariant mass distributions of D ( * ) + s K − pairs from B − → D ( * ) + s K − π − decays are inconsistent with the phase-space model, suggesting the presence of charm resonances lying below the D ( * ) + s K − threshold. |
Note: | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevLett.100.171803 |
It is part of: | Physical Review Letters, 2008, vol. 100, num. 17, p. 171803 |
URI: | http://hdl.handle.net/2445/138443 |
Related resource: | https://doi.org/10.1103/PhysRevLett.100.171803 |
ISSN: | 0031-9007 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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