Perturbative QCD predictions for the decay B-s(0) -> SS(a(0)(980),f(0)(980),f(0)(500))
Perturbative QCD predictions for the decay B-s(0) -> SS(a(0)(980),f(0)(980),f(0)(500))
复制标题
衰变 B-s(0) -> SS(a(0)(980),f(0)(980),f(0)(500)) 的微扰 QCD 预测
DOI：
10.1103/physrevd.102.116007
复制
发表时间：
2020
影响因子：
5
通讯作者：
Yu Xian-Qiao
中科院分区：
文献类型：
--
作者：
Liang Ze-Rui;Yu Xian-Qiao
在本工作中，我们首次用pQCD方法计算了带电荷和中性a（0）（980）介子的B-s（0）-> a（0）（980）a（0）（980）衰变模的分支比和CP破坏，以及B-s（0）-> f（0）（980）（f（0）（500））f（0）（980）（f（0）（500））.考虑到最近BESIII合作组的观测结果提供了相应的a（0）（980）波函数中的双夸克组分的直接信息，我们将标量介子a（0）（980），f（0）（980）和f（0）（500）作为qq夸克组分，并对这些衰变模进行了预言.当我们考虑混合方案时，我们计算的分支比在10（-4）的数量级，类似于10（-6）。我们还计算了这些衰变模的CP破坏参数。相对较大的分支比使其易于在LHC-b实验中得到验证，有助于我们理解标量介子的内部性质和QCD行为。
In this work, we calculate the branching ratios and CP violations of the B-s(0) -> a(0)(980)a(0)(980) decay modes with both charged and neutral a(0)(980) mesons and B-s(0) -> f(0)(980) (f(0)(500))f(0)(980)(f(0)(500)) for the first time in the pQCD approach. Considering the recent observation of the BESIII collaboration that provide a direct information about the constituent two-quark components in the corresponding a(0)(980) wave functions, we regard the scalar mesons a(0)(980), f(0)(980), and f(0)(500) as the qq quark component in our present work, and then make predictions of these decay modes. The branching ratios of our calculations are at the order of the 10(-4) similar to 10(-6) when we consider the mixing scheme. We also calculate the CP violation parameters of these decay modes. The relatively large branching ratios make it easily to be tested by the running LHC-b experiments, and it can help us to understand both the inner properties and the QCD behavior of the scalar meson.