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arXiv 1502.05280hep-ph
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协变夸克模型中B-S跃迁的形状因子

Form factors of the B-S-transitions in the covariant quark model

Aidos Issadykov, Mikhail A. Ivanov, Sayabek K. Sakhiyev

摘要:

在探索了由于中间标量$K^\ast_0$介子的存在而引起的$B\to Kπ+μ^+μ^-$全角分布的不确定性之后,我们在协变夸克模型中对$B(B_s)\to S$(S是标量介子)跃迁的全运动学区域的形状因子进行了直接计算.我们用低于1 GeV的标量介子:$a_0(980), f_0(500), f_0(980), K^\ast_0(800)$来限制自己。作为所得结果的应用,我们计算了半轻子和稀有衰变$B(B_s)\to S\ell\barν$,$B(B_s)\to S\ell\bar\ell$和$B(B_s)\to Sν\barν$的宽度.我们比较我们的结果与其他方法中获得的结果。

英文摘要:

In the wake of exploring uncertainty in the full angular distribution of the $B\to Kπ+μ^+μ^-$ caused by the presence of the intermediate scalar $K^\ast_0$ meson, we perform the straightforward calculation of the $B(B_s)\to S$ (S is a scalar meson) transition form factors in the full kinematical region within the covariant quark model. We restrict ourselves by the scalar mesons below 1 GeV: $a_0(980), f_0(500), f_0(980), K^\ast_0(800)$. As an application of the obtained results we calculate the widths of the semileptonic and rare decays $B(B_s)\to S\ell\barν$, $B(B_s)\to S\ell\bar\ell$ and $B(B_s)\to Sν\barν$. We compare our results with those obtained in other approaches.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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