Analysis of the \(\boldsymbol {B}_{\boldsymbol {c}}^{\boldsymbol {+}} {\boldsymbol \to } {\boldsymbol {D}}_{\boldsymbol {s}}^{\boldsymbol {+}} \overline {K}^{\mathbf {0}^{\ast }}\)

详细信息    查看全文

• 作者：A ASADI ; H MEHRABAN
• 关键词：QCD factorization ; final ; state interaction ; intermediate state ; branching ratio
• 刊名：Pramana
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：88
• 期：1
• 全文大小：
• 刊物类别：Physics and Astronomy
• 刊物主题：Physics, general; Astronomy, Observations and Techniques; Astrophysics and Astroparticles;
• 出版者：Springer India
• ISSN：0973-7111
• 卷排序：88

文摘

We analysed the process of \(B_{c}^{+}{\to } D_{s}^{+}\overline {K}^{0^{\ast } }\) using QCD factorization (QCDF) and final-state interaction (FSI) effects. First, the \(B_{c}^{+}{\to } D_{s}^{+}\overline {K}^{0^{\ast } }\) decay is calculated using QCDF method. The value found by using the QCDF method is less than the experimental value. Then we considered FSI effect as a sizable correction where the intermediate state \(D^{+^{\ast } }\pi ^{0}\) mesons via the exchange of \(K^{0}(K^{0^{\ast } })\) are produced. To consider the amplitudes of this intermediate state, the QCDF approach was used. The experimental branching ratio of \(B_{c}^{+}{\to } D_{s}^{+}\overline {K}^{0^{\ast } }\) decay is less than 0.4×10−6 and our results are (0.21±0.04)×10−7 and (0.37±0.05)×10−6 from QCDF and FSI, respectively.