论文标题
$ d_ {s}^{\ ast}的实验研究的可行性
Feasibility of the experimental study of $D_{s}^{\ast}$ ${\to}$ $ϕπ$ decay
论文作者
论文摘要
$ d_ {s}^{\ ast} $ meson的当前知识非常有限。除了主要的电磁衰变外，$ d_ {s}^{\ ast} $弱衰减是合法的，并提供了探索所需的$ d_ {s}^{\ ast} $ Meson的宝贵机会。在本文中，使用分解方法研究了$ d_ {s}^{\ ast} $ $ {\ to} $ $ $ ϕπ $衰减。发现分支比率$ {\ cal b}（d_ {s}^{\ ast} {\ to} ϕπ）$ $ {\ sim} $ $ {\ sim} $ {\ cal o}（10^{ - 7}）$，与$ e^{+colter的几千次事件相对应SuperKekb，CEPC和FCC-EE，以及在强子对撞机实验中的数百万事件，例如LHCB@HL-LHC。实验研究$ d_ {s}^{\ ast} $ $ {\ to} $ $ ϕπ $弱衰减，甚至考虑识别效率，这是可行的。
The current knowledge on the $D_{s}^{\ast}$ meson are very limited. Besides the dominant electromagnetic decays, the $D_{s}^{\ast}$ weak decays are legal and offer the valuable opportunities to explore the wanted $D_{s}^{\ast}$ meson. In this paper, the $D_{s}^{\ast}$ ${\to}$ $ϕπ$ decay was studied with the factorization approach. It is found that the branching ratio ${\cal B}(D_{s}^{\ast}{\to}ϕπ)$ ${\sim}$ ${\cal O}(10^{-7})$, which corresponds to several thousands of events at the $e^{+}e^{-}$ collider experiments including STCF, SuperKEKB, CEPC and FCC-ee, and several millions of events at the hadron collider experiments, such as LHCb@HL-LHC. It is feasible to experimentally study the $D_{s}^{\ast}$ ${\to}$ $ϕπ$ weak decay in the future, even considering the identification efficiency.
