A typographical error exists in Eq. (9). The factor 4 should appear in the denominator instead of the numerator. Thus Eq. (9) should be read asPHYSICAL REVIEW D 76, 099902(E) (2007) 1550-7998= 2007=76(9)=099902(1) 099902-1

We study the hadronic decay modes B 0 ! f 0 980K 0 , involving a scalar and a pseudoscalar meson in the final state. These decay modes are dominated by the loop induced b ! s qqq s; u; d penguins along with a small b ! u tree level transition (for B ! f 0 K ) and annihilation diagrams. Therefore, the standard model expectation of direct CP violation is negligibly small and the mixinginduced CP violation parameter in the mode B 0 ! f 0 K S is expected to give the same value of sin2, as extracted from B 0 ! J= K S but with opposite sign. Using the generalized factorization approach we find the direct CP violation in the decay mode B ! f 0 K to be of the order of few percent. We then study the effect of the R-parity violating supersymmetric model and show that the direct CP violating asymmetry in B ! f 0 980K could be as large as 80% and the mixing-induced CP asymmetry in B 0 ! f 0 K S (i.e., ÿS f 0 K S ) could deviate significantly from that of sin2 J= K S .

No abstract

The rare semileptonic [Formula: see text] and [Formula: see text] decay modes mediated by the [Formula: see text] transition are studied in this paper. We analyze observables such as the differential branching ratio, lepton polarization asymmetry and forward–backward asymmetry within the standard model in the low [Formula: see text] region. We then perform an analysis of the same modes within the 331 or [Formula: see text] model in which a new heavy [Formula: see text] boson contributes. The effects of the [Formula: see text]-mediated flavor-changing neutral current (FCNC) transitions on these modes are investigated by varying the mass [Formula: see text] and the model parameter [Formula: see text]. The new [Formula: see text] couplings are constrained by flavor observables of [Formula: see text] mixing and branching ratio of [Formula: see text]. We find that for some values of these couplings, the observables are quite sensitive to [Formula: see text] effects and deviations from Standard Model can be large.

We study the rare semileptonic [Formula: see text] and [Formula: see text] decay modes mediated by the quark level [Formula: see text] transition in this paper. We analyze observables such as the differential branching ratio, lepton polarization asymmetry and forward–backward asymmetry within the standard model in the large hadronic recoil region. We then analyze these observables within the 331 or [Formula: see text] model in which a new heavy [Formula: see text] boson contributes. The effects of the [Formula: see text]-mediated flavor changing neutral current (FCNC) transitions on these modes are examined by varying the mass [Formula: see text] and the model parameter [Formula: see text]. The new [Formula: see text] couplings are constrained by flavor observables of [Formula: see text] mixing. For the obtained parameter space, we observe [Formula: see text] sensitivities of our observables of interest and deviations from standard model can range from moderate to large depending on the [Formula: see text] value.