arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2502.04099hep-ph
收藏

夸克模型中Ξ_c的Cabibbofavored强子弱衰变

The Cabibbo-favored hadronic weak decays of the $Ξ_c$ in the quark model

Peng-Yu Niu, Qian Wang, Qiang Zhao

AI总结:

本文在非相对论组分夸克模型中研究Ξ_c的Cabibbofavored强子弱衰变,指出极点项对理解跃迁动力学不可或缺,并预言了可测量的不对称参数以确定衰变机制。

摘要:

在非相对论组分夸克模型中研究了Ξ_c^+→Ξ^0π^+、Ξ_c^0→Ξ^-π^+、Ξ_c^0→Ξ^0π^0、Ξ_c^0→Ξ^0η^{(')}和Ξ_c^0→Ξ^+K^-的Cabibbofavored强子弱衰变。通过在夸克层面分析其衰变机制,我们表明,除了粲重子强子弱衰变中通常考虑的直接介子发射过程和颜色压低过程之外,极点项对于理解跃迁动力学至关重要。为了进一步确定衰变机制,还预言了实验上可测量的不对称参数。

英文摘要:

The Cabibbo-favored hadronic weak decay of the $Ξ_c^+\to Ξ^0π^+$, $Ξ_c^0\to Ξ^-π^+$, $Ξ_c^0\to Ξ^0π^0$, $Ξ_c^0\to Ξ^0η^{(')}$ and $Ξ_c^0\to Ξ^+K^-$ are studied in the non-relativistic constituent quark model. By analyzing their decay mechanisms at the quark level we show that the pole terms are essential for understanding the transition dynamics in addition to the usually considered direct meson emission process and color suppressed process in the charmed baryon hadronic weak decays. The experimentally measurable asymmetry parameters are also predicted in order to further pin down the decay mechanism.

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。

↑