arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2205.07586hep-ph
收藏

从$Ξ_c^{(',*)}\bar{K}^{(*)}$和$Ξ^{(*)}D^{(*)}$相互作用系统研究类$Ω_c$分子态

Systematical study of $Ω_c$-like molecular states from interactions $Ξ_c^{(',*)}\bar{K}^{(*)}$ and $Ξ^{(*)}D^{(*)}$

Jun-Tao Zhu, Shu-Yi Kong, Lin-Qing Song, Jun He

摘要:

本文利用准势Bethe-Salpeter方程方法系统地研究了类$Ω_c$分子态。相关的相互作用$Ξ_c^{(*,')}\bar{K}^{(*)}$、$Ξ^{(*)}D^{(*)}$和$Ω^{(*)}_c(π/η/ρ/ω)$借助于具有SU(3)对称性、手征对称性和重夸克对称性的有效拉格朗日量,通过轻介子交换来描述。所考虑的相互作用得到的潜在的内核被插入到准潜在的Bethe-Salpeter方程,并进行耦合通道计算,以找到可能的分子状态和它的耦合考虑的通道。结果表明,$Ξ^*_c\bar{K}$与自旋宇称$3/2^-$相互作用可以产生等振荡态,这可能与态$Ω_c(3120)$有关。它的同辐射伙伴预测在PDMATHAMT通道中具有主导衰变。与$1/2^-$的等势线和等矢量状态可以由$Ξ'_c\bar{K}$相互作用产生,其阈值接近于$Ω_c(3050)$和$Ω_c(3065)$的质量。它们与$Ξ_c \bar{K}$通道的偶联非常弱,而等载体与$Ω_cπ$具有强偶联。高精度的测量有助于确认或寻找这些分子状态。目前的结果也建议实验搜索的状态与更高的质量产生的相互作用$Ξ^{(*,')}_c \bar{K}^*$和$Ξ^* D^{(*)}$。

英文摘要:

In this work, the $Ω_c$-like molecular states are systematically investigated in a quasipotential Bethe-Salpeter equation approach. The relevant interactions $Ξ_c^{(*,')}\bar{K}^{(*)}$, $Ξ^{(*)}D^{(*)}$, and $Ω^{(*)}_c(π/η/ρ/ω)$ are described by light meson exchanges with the help of the effective Lagrangians with SU(3), chiral, and heavy quark symmetries. The obtained potential kernels of considered interactions are inserted into the quasipotential Bethe-Salpeter equation, and coupled-channel calculations are performed to find possible molecular states and its couplings to the channels considered. The results suggest that an isoscalar state can be produced from the $Ξ^*_c\bar{K}$ interaction with spin parity $3/2^-$, which can be related to state $Ω_c(3120)$. And its isoscalar partner is predicted with a dominant decay in the $Ω_c^*π$ channel. The isoscalar and isovector states with $1/2^-$ can be produced from the $Ξ'_c\bar{K}$ interaction with a threshold close to the mass of the $Ω_c(3050)$ and $Ω_c(3065)$. Their couplings to the $Ξ_c \bar{K}$ channel are very weak, and the isovector one has strong coupling to $Ω_cπ$. High precision measurement is helpful to confirm or search such molecular states. Experimental search of states with higher masses generated from interactions $Ξ^{(*,')}_c \bar{K}^*$ and $Ξ^* D^{(*)}$ are also suggested by the current results.

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。

↑