4 research outputs found
Evidence for B-s(0)-\u3ephi phi decay and measurements of branching ratio and A(CP) for B+-\u3ephi K+
We present the first evidence of charmless decays of the B-s(0) meson, the decay B-s(0)-\u3ephi phi, and a measurement of the branching ratio BR(B-s(0)-\u3ephi phi) using 180 pb(-1) of data collected by the CDF II experiment at the Fermilab Tevatron collider. In addition, the BR and direct CP asymmetry for the B+-\u3ephi K+ decay are measured. We obtain BR(B-s(0)-\u3ephi phi)=[14(-5)(+6)(stat)+/- 6(syst)]x10(-6), BR(B+-\u3ephi K+)=[7.6 +/- 1.3(stat)+/- 0.6(syst)]x10(-6), and A(CP)(B+-\u3ephi K+)=-0.07 +/- 0.17(stat)(-0.02)(+0.03)(syst). Both decays are governed in the standard model by second order (penguin) b -\u3e s(s) over bar s amplitudes
Evidence for B-s(0)->phi phi decay and measurements of branching ratio and A(CP) for B+->phi K+
We present the first evidence of charmless decays of the meson, the
decay \phiphi, and a measurement of the Branching Ratio \BR(\phiphi) using
of data collected by the \cdfii experiment at the Fermilab
Tevatron collider. In addition, the BR and direct CP asymmetry for the \phik\
decay are measured. We obtain: \BR (\phiphi) = (14 \ase{6}{5}(stat.) \pm
6(syst.)) \times 10^{-6}, \BR (\phik) = (7.6 \pm 1.3(stat.) \pm 0.6(syst.))
\times 10^{-6}, and \ACP(\phik) = -0.07 \pm 0.17 (stat.) \ase{0.03}{0.02}
(syst.). Both decays are governed in the Standard Model by second order
(penguin) b \myto s\bar{s}s amplitudes.Comment: Submitted to Physical Review Letters Fixed few typos plus additional
comments to introduction suggested by referee'