Title: A short review on QCD sum rule studies of P-wave single heavy baryons Show Chinese title

Title: P波单重夸克重子的QCD求和规则研究简要综述

Abstract: Over the past few decades, the study of singly heavy baryons has entered a golden era, with numerous excited states observed by experimental collaborations. Various theoretical approaches have been developed to investigate their properties, with the QCD sum rule method being one of the most widely applied. This paper provides a review of these QCD sum rule studies. Over the last ten years, we have systematically studied $P$-wave singly heavy baryons using QCD sum rules and light-cone sum rules within the framework of heavy quark effective theory. These $P$-wave singly heavy baryons can explain many excited heavy baryons, including the $\Lambda_c(2595)^+$, $\Lambda_c(2625)^+$, $\Xi_c(2790)^{0/+}$, $\Xi_c(2815)^{0/+}$, $\Sigma_c(2800)^0$, $\Xi_c(2882)^0$, $\Xi_c(2923)^0$, $\Xi_c(2939)^0$, $\Xi_c(2965)^0$, $\Omega_c(3000)^0$, $\Omega_c(3066)^0$, $\Omega_c(3090)^0$, $\Omega_c(3050)^0$, $\Omega_c(3119)^0$, $\Lambda_b(5912)^0$, $\Lambda_b(5920)^0$, $\Xi_b(6087)^0$, $\Xi_b(6095)^0/\Xi_b(6100)^-$, $\Sigma_b(6097)^\pm$, $\Xi_b(6227)^-$, $\Omega_b(6316)^-$, $\Omega_b(6330)^-$, $\Omega_b(6340)^-$, and $\Omega_b(6350)^-$, etc. Furthermore, we predict additional $P$-wave singly heavy baryons, including two $\Lambda_b$ states, two $\Xi_b$ states, three $\Sigma_b$ states, three $\Xi_b^\prime$ states, two $\Omega_b$ states, two $\Lambda_c$ states, two $\Xi_c$ states, three $\Sigma_c$ states, and one $\Omega_c$ state, all with relatively narrow decay widths, making them viable candidates for experimental observation. The study of singly heavy baryons is closely related to two meaningful questions:"What is the shortest possible lifetime of an observable particle?" and "How can one generally describe approximate (flavor) symmetries?". Show Chinese abstract

Abstract: 在过去几十年中，单重夸克重子的研究进入了黄金时代，实验合作组观察到了许多激发态。 各种理论方法已被开发出来研究它们的性质，其中QCD求和规则方法是最广泛使用的方法之一。 本文对这些QCD求和规则研究进行了综述。 在过去的十年中，我们系统地研究了框架内的$P$波单重夸克重子，使用了QCD求和规则和光锥求和规则。 这些$P$-波重夸克重子可以解释许多激发的重夸克重子，包括$\Lambda_c(2595)^+$，$\Lambda_c(2625)^+$，$\Xi_c(2790)^{0/+}$，$\Xi_c(2815)^{0/+}$，$\Sigma_c(2800)^0$，$\Xi_c(2882)^0$，$\Xi_c(2923)^0$，$\Xi_c(2939)^0$，$\Xi_c(2965)^0$，$\Omega_c(3000)^0$，$\Omega_c(3066)^0$，$\Omega_c(3090)^0$，$\Omega_c(3050)^0$，$\Omega_c(3119)^0$，$\Lambda_b(5912)^0$，$\Lambda_b(5920)^0$，$\Xi_b(6087)^0$，$\Xi_b(6095)^0/\Xi_b(6100)^-$，$\Sigma_b(6097)^\pm$，$\Xi_b(6227)^-$，$\Omega_b(6316)^-$，$\Omega_b(6330)^-$，$\Omega_b(6340)^-$和$\Omega_b(6350)^-$等。 此外，我们预测了额外的$P$-波单重重重子，包括两个$\Lambda_b$状态，两个$\Xi_b$状态，三个$\Sigma_b$状态，三个$\Xi_b^\prime$状态，两个$\Omega_b$状态，两个$\Lambda_c$状态，两个$\Xi_c$状态，三个$\Sigma_c$状态，以及一个$\Omega_c$状态，所有状态都有相对较窄的衰变宽度，使其成为实验观测的可行候选。 对单重重重子的研究与两个有意义的问题密切相关：“可观测粒子的最短可能寿命是什么？”以及“如何一般地描述近似的（味）对称性？”。