The rare decays Bs^0(B^-0 s)→D^±π^-+ can occur only via annihilation-type diagrams in the standard model. In this paper, we calculate branching ratios of these decays in perturbative QCD approach ignoring so...The rare decays Bs^0(B^-0 s)→D^±π^-+ can occur only via annihilation-type diagrams in the standard model. In this paper, we calculate branching ratios of these decays in perturbative QCD approach ignoring soft final state interaction. From our calculation, we find that their branching ratios are at O(10^-6) with large CP asymmetry, which may be measured in LHC-b experiment in the future.展开更多
We study the rare radiative dileptonlc decays B^0(Bs)→γe^+e^- (e = e, μ) in the standard model By using the B meson wave function constrained by non-leptonic decays, the branching ratios turn out to be of the ...We study the rare radiative dileptonlc decays B^0(Bs)→γe^+e^- (e = e, μ) in the standard model By using the B meson wave function constrained by non-leptonic decays, the branching ratios turn out to be of the order of 10^-9 for Bs→γe^+e^-, γe^+e^-, and 10^-10 for Bs→γe^+e^-, γe^+e^-. Based on the study, these decays are accessible at the near future LHC-b experiment, which are useful to determine the B(B,) wave function.展开更多
基金The project partly supported by National Natural Science Foundation of China
文摘The rare decays Bs^0(B^-0 s)→D^±π^-+ can occur only via annihilation-type diagrams in the standard model. In this paper, we calculate branching ratios of these decays in perturbative QCD approach ignoring soft final state interaction. From our calculation, we find that their branching ratios are at O(10^-6) with large CP asymmetry, which may be measured in LHC-b experiment in the future.
基金The project supported by National Natural Science Foundation of China under Grant No. 10475085 and the Natural Science Foundation of Hebei Province of China under Grant No. A2005000535
文摘We study the rare radiative dileptonlc decays B^0(Bs)→γe^+e^- (e = e, μ) in the standard model By using the B meson wave function constrained by non-leptonic decays, the branching ratios turn out to be of the order of 10^-9 for Bs→γe^+e^-, γe^+e^-, and 10^-10 for Bs→γe^+e^-, γe^+e^-. Based on the study, these decays are accessible at the near future LHC-b experiment, which are useful to determine the B(B,) wave function.