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arXiv 2009.08600hep-ph
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单 Cabibbo 压低过程 $Λ_c \to π^0ηp$ 中的 $a_0(980)$

The $a_0(980)$ in the single Cabibbo-suppressed process $Λ_c \to π^0ηp$

Xue-Chao Feng, Le-Le Wei, Man-Yu Duan, En Wang, De-Min Li

AI总结:

本文研究 Cabibbo 压低衰变 $Λ_c \to π^0ηp$,纳入手征幺正方法下动力学产生的 $a_0(980)$,计算不变质量分布并估计分支比,为实验寻找该态提供依据。

摘要:

在本工作中,我们研究了 Cabibbo 压低过程 $Λ_c \to π^0ηp$,并考虑了中间标量态 $a_0(980)$;该态可在手征幺正方法中由 $S$ 波赝标量–赝标量相互作用动力学产生。我们计算了 $π^0η$ 不变质量分布,发现存在与 $a_0(980)$ 相关的显著结构。我们还粗略估计分支比为 $\mathcal{B}(Λ_c \to π^0ηp) \sim 10^{-4}$。我们鼓励实验同行测量该过程,以在此反应中寻找 $a_0(980)$ 态。

英文摘要:

In this work, we have investigated the Cabibbo-suppressed process $Λ_c \to π^0ηp$, by taking into account the intermediate scalar state $a_0(980)$, which could be dynamically generated from the $S$-wave pseudoscalar-pseudoscalar interaction within the chiral unitary approach. We have calculated the $π^0η$ invariant mass distribution, and found that there is a significant structure associated to the $a_0(980)$. We have also roughly estimated the branching fraction $\mathcal{B}(Λ_c \to π^0ηp) \sim 10^{-4}$. We encourage our experimental colleagues to measure the process $Λ_c \to π^0ηp$ for searching for the state $a_0(980)$ in this reaction.

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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