4-11 July 2012
Melbourne Convention and Exhibition Centre
Australia/Melbourne timezone
ICHEP2012 - 36th International Conference for High Energy Physics

CDF results on the search for rare Bd, Bs --> mu+ mu- and X_s mu+ mu- decays

6 Jul 2012, 15:30
Room 217 (Melbourne Convention and Exhibition Centre)

Room 217

Melbourne Convention and Exhibition Centre

Melbourne Australia
Parallel Sessions Track 7. CP Violation, CKM, Rare Decays, Meson Spectroscopy Room 217 - Heavy Ion Collisions / B-Physics / CP Violation - TR5/7/9


Dr Hideki Miyake (KEK (JP))


Results of a CDF search for B->mumu decays and the angular analysis of B --> X_s mu+mu- decay sare presented using the complete 10/fb dataset collected by the CDF experiment. The B-> mu+mu-analysis is unchanged with respect to the last iteration and 30% more data allow to reach 95% expected upper limits for the branching ratio of4.2x10^-9 in the Bd decay and 1.3x10^-8 in the Bs decay. The results show no evidence for the Bd decay and an indication for a moderate excess of signal-like events over background in the Bs channel, compatible with standard model expectations and other experimental results. The b->s mu mu results include updated measurements of branching fractions, polarization, and muon forward-backward asymmetry in B-->K(*) mu mu and Lambda_b --> Lambda mu mu decays.

Primary author

Dr Hideki Miyake (KEK (JP))

Presentation materials