论文标题
研究$ b^{0} _ {（s）} $衰减成$ ϕ $和标量或矢量梅森
Study $B^{0}_{(s)}$ decays into $ϕ$ and a scalar or vector meson
论文作者
论文摘要
在目前的工作中，我们调查了$ b^{0} _ {s} \ rightArrow ϕπ^{+}π^{ - } $和$ b^{0} \ rightArrow ϕπ^{+}π^{+}π^{ - } $与最终状态互动基于chiral norital norital nortary files。在$π^+π^ - $与其耦合通道的最终状态相互作用中，我们研究了$η$通道在两体相互作用中对$ f_ {0}（980）$状态复制的影响。我们对衰减$π^+π^ - $不变的质量分布的结果，$ b^{0} _ {s} \ rightArrow ϕπ^{+}π^{ - } $描述了最高1 GEV的实验数据，并以$ f_ {0}（0}（980）$和$ρ的共鸣贡献。对于$ b^{0} \ rightArrow ϕπ^{+}π^{ - } $衰减的预测不变质量分布，我们发现$ f_ {0}（500）$的贡献是重要的，除了$ f_ {0}（980）$的$ f_ {0}（500）$。通过一些实验性分支比为确定生产顶点因子的输入，我们在$ b^0 _ {（s）} $衰减中对其他最终衰减通道的分支比（包括矢量介子）做出了一些预测，其中一些在不认真的情况下与实验性相符。
In the present work, we investigate the decays of $B^{0}_{s} \rightarrow ϕπ^{+}π^{-}$ and $B^{0} \rightarrow ϕπ^{+}π^{-}$ with the final state interactions based on the chiral unitary approach. In the final state interactions of the $π^+π^-$ with its coupled channels, we study the effects of the $ηη$ channel in the two-body interactions for the reproduction of the $f_{0}(980)$ state. Our results for the $π^+π^-$ invariant mass distributions of the decay $B^{0}_{s} \rightarrow ϕπ^{+}π^{-}$ describe the experimental data up to 1 GeV well, with the resonance contributions from the $f_{0}(980)$ and $ρ$. For the predicted invariant mass distributions of the $B^{0} \rightarrow ϕπ^{+}π^{-}$ decay, we found that the contributions from the $f_{0}(500)$ are significant except for the ones from the $f_{0}(980)$ state. With some experimental branching ratios as input to determine the production vertex factors, we make some predictions for the branching ratios of the other final decay channels, including the vector mesons, in the $B^0_{(s)}$ decays, where some of them are consistent with the experimental ones within the uncertainties.
