| B_q~*→D_qV和P_qD~*非轻弱衰变的研究 |
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| 作者单位： | ;1.新乡学院物理与电子工程学院;2.河南师范大学物理与电子工程学院 |
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| 摘 要： | 基于强子、电子对撞机LHC和Belle-Ⅱ上的重味物理实验,详细研究了B~*→DD~*、Dρ~-、DK~(*-)、πD~*和KD~*等非轻衰变.采用简单因子化方法计算了这些过程的衰变振幅,并利用BSW模型计算了和这些过程相关的形状因子,进而给出了这些衰变过程的分支比和极化分数.从数值结果来看,B_q~*→D_qD_s~(*-)和D_qρ~-衰变有比较大的分支比,数量级高达10~(-8).因此,这两个过程将有望较早地被LHC和Belle-Ⅱ实验所观测到.
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| 关 键 词： | B*介子 弱衰变 因子化 |
Study of Nonleptonic B_q~*→D_qV and P_qD~* Weak Decays |
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| Institution: | ,College of Physics and Electronic Engineering,Xinxiang University,College of Physics and Electronic Engineering,Henan Normal University |
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| Abstract: | Motivated by the experiments of heavy flavor physics at running LHC and upgrading Belle-Ⅱ in the future,the nonleptonic B~*→DD~*,Dρ,DK~*,πD~* and KD~* weak decays were studied in details.With the amplitudes calculated with factorization approach and the form factors of B~* ransition into pseudoscalar meson evaluated with the BSW model,the branching fractions and the polarization fractions were firstly presented.Numerically,the B_q~*→D_qD_s~* and D_qρ decays had the large branching fractions,10~8,which should be sought for with priority and firstly observed by LHC and Belle-Ⅱ experiments. |
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| Keywords: | B_(u d s)~* meson weak decay factorization |
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