### 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 language | English |
---|---|

Article number | 045002 |

Journal | Journal of Physics G: Nuclear and Particle Physics |

Volume | 39 |

Issue number | 4 |

DOIs | |

Publication status | Published - 2012 Apr 1 |

### Fingerprint

### All Science Journal Classification (ASJC) codes

- Nuclear and High Energy Physics

### Cite this

_{s}→D

_{s}

^{(*)}and their applications to semi-leptonic and non-leptonic decays.

*Journal of Physics G: Nuclear and Particle Physics*,

*39*(4), [045002]. https://doi.org/10.1088/0954-3899/39/4/045002

}

_{s}→D

_{s}

^{(*)}and their applications to semi-leptonic and non-leptonic decays',

*Journal of Physics G: Nuclear and Particle Physics*, vol. 39, no. 4, 045002. https://doi.org/10.1088/0954-3899/39/4/045002

**Estimating form factors of B _{s}→D _{s} ^{(*)} and their applications to semi-leptonic and non-leptonic decays.** / Chen, X. J.; Fu, H. F.; Kim, C. S.; Wang, G. L.

Research output: Contribution to journal › Article

TY - JOUR

T1 - Estimating form factors of B s→D s (*) and their applications to semi-leptonic and non-leptonic decays

AU - Chen, X. J.

AU - Fu, H. F.

AU - Kim, C. S.

AU - Wang, G. L.

PY - 2012/4/1

Y1 - 2012/4/1

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=84863362973&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84863362973&partnerID=8YFLogxK

U2 - 10.1088/0954-3899/39/4/045002

DO - 10.1088/0954-3899/39/4/045002

M3 - Article

AN - SCOPUS:84863362973

VL - 39

JO - Journal of Physics G: Nuclear and Particle Physics

JF - Journal of Physics G: Nuclear and Particle Physics

SN - 0954-3899

IS - 4

M1 - 045002

ER -

_{s}→D

_{s}

^{(*)}and their applications to semi-leptonic and non-leptonic decays. Journal of Physics G: Nuclear and Particle Physics. 2012 Apr 1;39(4). 045002. https://doi.org/10.1088/0954-3899/39/4/045002