Photo-and electro-production of narrow exotic states:From light quarks to charm and up to bottom  

作　　者：Xu Cao 

机构地区：[1]Institute of Modern Physics,Chinese Academy of Sciences,Lanzhou 730000 China [2]University of Chinese Academy of Sciences,Beijing 100049,China [3]Research Center for Hadron and CSR Physics,Lanzhou University and Institute of Modern Physics of CAS,Lanzhou 730000,China

出　　处：《Frontiers of physics》2023年第4期71-94,共24页物理学前沿（英文版）

摘　　要：Accessing a full image of the inner content of hadrons represents a central endeavour of modern particle physics,with the main scientific motivation to investigate the strong interaction binding the visible matter.On the one hand,the structure of known exotic candidates is a fundamental open issue addressed widely by scientists.On the other hand,looking for new states of exotic nature is a central component for theoretical and experimental efforts from electron-positron machine and electron accelerator with fixed target to heavy ion and electron-ion colliders.In this article we present a succinct short overview of the attempt to search for exotic narrow N∗and Z states containing light quarks only or also charm,and its connotation for bottom regions(the latter two are also known as Pc(Zc)and Pb(Zb)states,respectively in the literature).We address the effort of searching for exotic narrow N∗and Z states in light quark sector.We focus on recent progress in searching for signal of Pc and Zc states photoproduction and its implication into the Pb and Zb photoproduction and their decay properties.We also discuss future perspectives for the field in electron-ion colliders,a good place to disentangle the nature of some of these states and investigate some other enlightening topics including QCD trace anomaly and quarkonium-nucleon scattering length.

关 键 词：exotic states photo-and electro-production electron-ion colliders HADRON 

分 类 号：O572.33[理学—粒子物理与原子核物理]