Search results for " 11.30.Pb"

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Search for rare quark-annihilation decays, B --> Ds(*) Phi

2005

We report on searches for B- --> Ds- Phi and B- --> Ds*- Phi. In the context of the Standard Model, these decays are expected to be highly suppressed since they proceed through annihilation of the b and u-bar quarks in the B- meson. Our results are based on 234 million Upsilon(4S) --> B Bbar decays collected with the BABAR detector at SLAC. We find no evidence for these decays, and we set Bayesian 90% confidence level upper limits on the branching fractions BF(B- --> Ds- Phi) Ds*- Phi)<1.2x10^(-5). These results are consistent with Standard Model expectations.

PhysicsNuclear and High Energy PhysicsParticle physicsAnnihilationMeson010308 nuclear & particles physicsBranching fractionBABARElectron–positron annihilationHadronElementary particleQuarkoniumPARTICLE PHYSICS; PEP2; BABAR01 natural sciencesHEPHigh Energy Physics - Experiment0103 physical sciencesPEP2[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]PARTICLE PHYSICSB mesonHigh Energy Physics::Experiment13.25.Hw 12.60.Jv 11.30.Pb010306 general physics
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