Analysis of the $B^{+}_{c} ightarrow D^{+}_{s}decay

Pramana

H MEHRABAN1¹  A ASADI¹ 

[1] Physics Department, Semnan University, P.O. Box 35195-363, Semnan, Iran$$

关键词: QCD factorization;    final-state interaction;    intermediate state;    branching ratio.;   

DOI  :  

学科分类：物理（综合）

来源: Indian Academy of Sciences

【 摘 要 】

We analysed the process of $B^{+}_{c} ightarrow D^{+}_{s} ar{K}^{0ast}$ using QCD factorization (QCDF) and final-state interaction (FSI) effects. First, the $B^{+}_{c} ightarrow D^{+}_{s} ar{K}^{0ast}$ decay is calculated using QCDF method. The value found by using theQCDF method is less than the experimental value. Then we considered FSI effect as a sizable correction wherethe intermediate state $D^{+}^{ast}$ mesons via the exchange of $K^{0}(K^{0}^{ast}$) are produced. To consider the amplitudes ofthis intermediate state, the QCDF approach was used. The experimental branching ratio of $B^{+}_{c} ightarrow D^{+}_{s} ar{K}^{0ast}$ decayis less than $0.4 imes 10^{-6}$ and our results are $(0.21 pm 0.04) imes 10^{7}$ and $(0.37 pm 0.05) imes 10^{6}$ from QCDF and FSI,respectively.

【 授权许可】

Unknown