Estimating form factors of B s→D s (*) and their applications to semi-leptonic and non-leptonic decays

X. J. Chen, H. F. Fu, C. S. Kim, G. L. Wang

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Abstract

B s 0→D s - and B s 0→D s* - weak transition form factors are estimated for the whole physical region with a method based on an instantaneous approximated Mandelstam formulation of transition matrix elements and the instantaneous BetheSalpeter equation. We apply the estimated form factors to branching ratios, CP asymmetries and polarization fractions of non-leptonic decays within the factorization approximation. We study the non-factorizable effects and annihilation contributions with the perturbative QCD approach. The branching ratios of semi-leptonic B s 0→D s (*)l + l decays are also evaluated. We show that the calculated decay rates agree well with the available experimental data. The longitudinal polarization fractions of B s D s * V(A) decays are ∼0.8 when V(A) denotes a light meson and are ∼0.5 when V(A) denotes a D q (q = d, s) meson.

Original languageEnglish
Article number045002
JournalJournal of Physics G: Nuclear and Particle Physics
Volume39
Issue number4
DOIs
Publication statusPublished - 2012 Apr 1

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All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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