Two-body Charmed $B$ Meson Decays In Factorization Assisted Topological Amplitude Approach

分类： 物理学 >> 核物理学 提交时间： 2016-09-05

CAI-DIAN LU SI-HONG ZHOU

摘要： We analyze the two-body charmed B meson decays Bu,d,s→D(∗)P(V) in the factorization assisted topological amplitude approach, where P(V) denoting a light pseudoscalar (vector) meson. Different from the conventional topological diagram approach, flavor SU(3) symmetry breaking effects are taken into account. Therefore only four universal nonperturbative parameters are introduced to describe the contribution from non-factorization diagrams for all the decay channels. The number of free parameters and the χ2 per degree of freedom are both significantly reduced comparing with the conventional topological diagram approach. With the 4 fitted parameters, we predict the branching fractions of 120 decay modes induced by both b→c and b→u transitions, which are well consistent with the measured data or to be tested on the future experiments. We also investigated the relative size of different topological diagrams, isospin violation, flavor SU(3) symmetry breaking effects, compared with previous approaches.

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