Search for the Rare Decays B^+ -> mu^+ mu^- K^+, B^0 -> mu^+ mu^- K^*0(892), and B^0_s -> mu^+ mu^- phi at CDF

Abstract

We search for b to sμ^+μ^- transitions in B meson (B^+, B^0, or B^0_s) decays with 924pb^{-1} of p pbar collisions at sqrt(s)=1.96 TeV collected with the CDF II detector at the Fermilab Tevatron. We find excesses with significances of 4.5, 2.9, and 2.4 standard deviations in the B^+ to μ^+μ^-K^+, B^0 to μ^+μ^-K^*(892)^0, and B_s^0 to μ^+μ^-ϕdecay modes, respectively. Using B to J/psi h (h = K^+, K^*(892)^0, phi) decays as normalization channels, we report branching fractions for the previously observed B^+ and B^0 decays, BR(B^+ to μ^+μ^-K^+)=(0.59\pm0.15\pm0.04) x 10^{-6}, and BR(B^0 to μ^+μ^-K^*(892)^0)=(0.81\pm0.30\pm0.10) x 10^{-6}, where the first uncertainty is statistical, and the second is systematic. These measurements are consistent with the world average results, and are competitive with the best available measurements. We set an upper limit on the relative branching fraction BR(B_s^0 to μ^+μ^-ϕ)/BR(B_s^0 to J/ψϕ) <2.6(2.3)\times10^{-3} at the 95(90)% confidence level, which is the most stringent to date.

Submitted to Phys. Rev. D

References in corpus (1)

• Search for the Rare Decay B0_s -> phi mu^+ mu- with the D0 Detector

Cited by in corpus (18)

• Symmetries and Asymmetries of B -> K* mu+ mu- Decays in the Standard Model and Beyond
• Observation of the Baryonic Flavor-Changing Neutral Current Decay Lambda_b -> Lambda mu+ mu-
• Measurement of the Forward-Backward Asymmetry in the B -> K(*) mu+ mu- Decay and First Observation of the Bs -> phi mu+ mu- Decay
• Rare dileptonic decays of Λ_b in a quark model
• Analysis of $B\to K_J^{\ast }(\to K\pi ){\mu }^{+}{\mu }^{-}$ in the higher kaon resonance region
• Search for flavor changing neutral currents in decays of top quarks
• Branching ratios, forward-backward asymmetries and angular distributions of $B\to K_2^{\ast }{l}^{+}{l}^{-}$ in the standard model and new physics scenarios
• Rare semileptonic decays of B and B_c mesons in the relativistic quark model
• Measurement of the production fraction times branching fraction f(b --> Λ_b)B(Λ_b --> J/ψΛ)
• Radiative and Semileptonic B Decays Involving Higher K-Resonances in the Final States
• Angular distribution of the FCNC process $B_c\to D_s^{\ast }(\to D_s\pi ){\ell }^{+}{\ell }^{-}$
• Complementarity of Semileptonic $B$ to $K_2^{\ast }(1430)$ and $K^{\ast }(892)$ Decays in the Standard Model with Fourth Generation
• Renormalization of heavy-light currents in moving NRQCD
• Exploring New Physics in transition $b\to s{\ell }^{+}{\ell }^{-}$ through different $B_c\to D_s^{(\ast )}{\ell }^{+}{\ell }^{-}$ observables
• Review of Physics Results from the Tevatron: Heavy Flavor Physics
• Exclusive b \to s (d) ll Decays
• Phenomenology of the exclusive rare semileptonic decay B -> K pi l^+ l^-
• B physics at CDF - the Beauty of hadron collisions