TY  - JOUR
AU  - CDF Collaboration (Aaltonen, T. et al
AU  - Cabrera, S.
PY  - 2011
DA  - 2011//
TI  - Measurement of the Forward-Backward Asymmetry in the B -> K-(*) mu(+)mu(-) Decay and First Observation of the B-s(0) -> phi mu(+)mu(-) Decay
T2  - Phys. Rev. Lett.
JO  - Physical Review Letters
SP  - 161801
EP  - 7pp
VL  - 106
IS  - 16
PB  - Amer Physical Soc
AB  - We reconstruct the rare decays B+ -> K+ mu(+)mu(-), B-0 -> K*(892)(0) mu(+)mu(-), and B-s(0) -> phi(1020) mu(+)mu(-) in a data sample corresponding to 4.4 fb(-1) collected in p (p) over bar collisions at root s = 1.96 TeV by the CDF II detector at the Tevatron Collider. Using 121 +/- 16 B+ -> K+ mu(+)mu(-) and 101 +/- 12 B-0 -> K-*0 mu(+)mu(-) decays we report the branching ratios. In addition, we report the differential branching ratio and the muon forwardbackward asymmetry in the B+ and B-0 decay modes, and the K-*0 longitudinal polarization fraction in the B-0 decay mode with respect to the squared dimuon mass. These are consistent with the predictions, and most recent determinations from other experiments and of comparable accuracy. We also report the first observation of the B-s(0) -> phi mu(+)mu(-) decay and measure its branching ratio BR(B-s(0) -> phi mu(+)mu(-)) = [1.44 +/- 0.33 +/- 0.46] x 10(-6) using 27 +/- 6 signal events. This is currently the most rare B-s(0) decay observed.
SN  - 0031-9007
UR  - http://arXiv.org/abs/arXiv:1101.1028
UR  - https://doi.org/10.1103/PhysRevLett.106.161801
DO  - 10.1103/PhysRevLett.106.161801
LA  - English
N1  - ISI:000290095300005
ID  - CDFCollaborationAaltonen+Cabrera2011
ER  -