Rescattering mechanism of weak decays of double-charm baryons Supported by the National Natural Science Foundation of China (11775117, U1732101, 11975112), and National Key Research and Development Program of China (2020YFA0406400),Chinese Physics C

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Rescattering mechanism of weak decays of double-charm baryons Supported by the National Natural Science Foundation of China (11775117, U1732101, 11975112), and National Key Research and Development Program of China (2020YFA0406400)
Chinese Physics C ( IF 3.6 ) Pub Date : 2021-04-22 , DOI: 10.1088/1674-1137/abec68
Jia-Jie Han _{1,

2} , Hua-Yu Jiang _{1,

3} , Wei Liu ₁ , Zhen-Jun Xiao ₂ , Fu-Sheng Yu _{1,

4,

5,

6}

Affiliation

The doubly charmed baryon $\Xi_{cc}^{++}$ was recently observed by LHCb via the decay processes of $\Xi_{cc}^{++}\to \Lambda_c^+ K^-\pi^+\pi^+$ and $\Xi_c^+\pi^+$ . These discovery channels were successfully predicted in a framework in which the short-distance contributions are calculated under the factorization hypothesis and the long-distance contributions are estimated using the rescattering mechanism for the final-state-interaction effects. In this paper, we illustrate the above framework in detail by systematic studies on the two-body baryonic decays ${\cal{B}}_{cc}\to{\cal{B}}_{c}P$ involving the doubly charmed baryons ${\cal{B}}_{cc} = (\Xi_{cc}^{++} , \Xi_{cc}^+,\Omega_{cc}^+)$ , the singly charmed baryons ${\cal{B}}_{c} = ({\cal{B}}_{\bar{3}}, {\cal{B}}_{6})$ and the light pseudoscalar mesons $P = (\pi,K,\eta_{1,8})$ .

中文翻译：

国家自然科学基金(11775117,U1732101,11975112)和国家重点研发计划(2020YFA0406400)资助的双鲲重子弱衰变的再散射机制

$\Xi_{cc}^{++}$ LHCb 最近通过和的衰变过程观察到了 $\Xi_{cc}^{++}\to \Lambda_c^+ K^-\pi^+\pi^+$ 双魅重子 $\Xi_c^+\pi^+$ 。这些发现通道是在一个框架中成功预测的，其中在分解假设下计算短距离贡献，并使用最终状态交互效应的再散射机制估计长距离贡献。在本文中，我们通过系统研究 ${\cal{B}}_{cc}\to{\cal{B}}_{c}P$ 双粲重子 ${\cal{B}}_{cc} = (\Xi_{cc}^{++} , \Xi_{cc}^+,\Omega_{cc}^+)$ 、单粲重子 ${\cal{B}}_{c} = ({\cal{B}}_{\bar{3}}, {\cal{B}}_{6})$ 和轻赝标量介子的二体重子衰变，详细说明了上述框架 $P = (\pi,K,\eta_{1,8})$ 。

更新日期：2021-04-22

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