Lattice QCD study of hadron scattering based on CLQCD ensembles

摘要：Lattice QCD studies of hadron scattering and resonance properties are essential for understanding strong interactions from first principles. Over the past few years, the CLQCD Collaboration has generated a series of gauge ensembles covering a wide range of lattice spacings, volumes, and quark masses, enabling precision calculations with systematically controlled uncertainties. In this talk, I will present recent progress in studies of hadron scattering using these ensembles.

The talk is organized into four parts. First, for meson-meson scattering, I will report precise determinations of the masses and widths of the ρ and K* resonances, and discuss the pion-mass dependence of the D*(2300). Second, in the meson–baryon sector, I will present studies of the scattering of doubly charmed baryons with light pseudoscalar mesons. These calculations aim to investigate the spectrum of doubly charmed baryons and explore the possible existence of doubly charmed pentaquark states. Third, I will discuss baryon–baryon scattering, with a focus on the nucleon–nucleon system. Finally, I will present studies of three-body scattering, including the isoscalar three-pion channel associated with the ω(782)resonance and the isovector three-pion channel relevant to the π(1300). Together, these studies illustrate the expanding reach of lattice QCD in determining multihadron dynamics and resonance properties directly from the underlying theory of strong interactions.

个人简介：刘柳明，中国科学院近代物理研究所研究员。2002 年本科毕业于武汉大学， 2005年硕士毕业于北京大学，2010年于美国威廉玛丽学院获得博士学位。2010年—2017年先后在爱尔兰都柏林圣三一学院和德国波恩大学从事博士后研究工作。2017 年 12 月开始在中国科学院近代物理研究所任研究员。研究领域为格点量子色动力学，研究工作主要集中在用格点量子色动力学的方法研究强子谱与强子结构。