Right-handed current contributions in B -> K pi decays

Abstract

We reexamine the right-handed current effects in $b\to s$ transitions in nonmanifest left-right models. Using the effective Hamiltonian approach including all possible low-energy operators, we obtain especially the B \to K \pi decay amplitudes including annihilation contributions, and investigate the right-handed current contributions to CP asymmetries in $B\to K\pi$ decays. Taking into account the constraints from global analysis of muon decay measurements, |V_{ub}| measurements in inclusive and exclusive B decays, and $B_s^0-\overline{B_s^0}$ mixing measurements, we find the allowed regions of new physics parameters satisfying the current experimental data.

Comments: 9 pages, 4 figures, Numerical results changed with updated experimental data, journal version