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Observation of tree-level B decays with s(s)over-bar production from gluon radiation

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Aubert, B., Bona, M., Boutigny, D., Karyotakis, Y., Lees, J. P., Poireau, V., Prudent, X., Tisserand, V., Zghiche, A., Tico, J. Garra et al.
(2008) Observation of tree-level B decays with s(s)over-bar production from gluon radiation. Physical Review Letters, Vol.100 (No.17). doi:10.1103/PhysRevLett.100.171803

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Official URL: http://dx.doi.org/10.1103/PhysRevLett.100.171803

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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 s (s) over bar pair. We present observations of the decays B--> D-s(*)K-+(-) pi(-) and (B) over bar (0) -> (Ds+KS0)pi(-) and evidence for B--> D-s(+) K- K- and set upper limits on the branching fractions for (B) over bar (0) -> (Ds*+KS0) pi(-) and B- -> Ds*+K- K- using 383 x 10(6) gamma(4S)-> B (B) over bar events collected by the BABAR detector at SLAC. We present evidence that the invariant mass distributions of Ds(*)+K- pairs from B- -> D-s(*)K-+(-)pi(-) decays are inconsistent with the phase-space model, suggesting the presence of charm resonances lying below the D-s(*)(+) K- threshold.

Item Type: Journal Article
Subjects: Q Science > QC Physics
Divisions: Faculty of Science > Physics
Journal or Publication Title: Physical Review Letters
Publisher: American Physical Society
ISSN: 0031-9007
Official Date: 2 May 2008
Dates:
DateEvent
2 May 2008UNSPECIFIED
Volume: Vol.100
Number: No.17
Number of Pages: 7
DOI: 10.1103/PhysRevLett.100.171803
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access

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