最低奇宇称$Σ_c$和$Σ_b$重子的观测前景
Prospects for observing the lowest-lying odd-parity $Σ_c$ and $Σ_b$ baryons
摘要：
存在负宇称态$Λ_{c,b}(1/2^-, 3/2^-)$的候选者，其由相对于$c,b$夸克具有一个单位轨道角动量的同位旋零、自旋零的轻双夸克$[ud]$组成。然而，$Σ_c(1/2^+)$和$Σ_c^*(3/2^+)$的轨道激发只有一个候选者，而$Σ_b(1/2^+)$或$Σ_b^*(3/2^+)$的轨道激发没有候选者。我们推广了先前对奇宇称$Λ_{c,b}$态的讨论，并探讨了由轻的非奇异双夸克$(uu,ud,dd)$组成的奇宇称$Σ_{c,b}$重子在相对于自旋为1/2的重夸克$(c,b)$的$L=1$态中的某些模式.
英文摘要：
There exist candidates for the negative-parity states $Λ_{c,b}(1/2^-, 3/2^-)$ consisting of an isospin-zero, spin-zero light diquark $[ud]$ with one unit of orbital angular momentum with respect to a $c,b$ quark. However, there exists only one candidate for the orbital excitations of the $Σ_c(1/2^+)$ and $Σ_c^*(3/2^+)$, and none for the orbital excitations of $Σ_b(1/2^+)$ or $Σ_b^*(3/2^+)$. We extend a previous discussion of odd-parity $Λ_{c,b}$ states and explore some patterns of the odd-parity $Σ_{c,b}$ baryons consisting of a light isospin-one nonstrange diquark $(uu,ud,dd)$ in a state of $L=1$ with respect to the spin-1/2 heavy quark $(c,b)$.
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。
