Dibaryons: Molecular versus compact hexaquarks  

作　　者：H.Clement T.Skorodko 

机构地区：[1]Physikalisches Institut der Universität Tübingen and Kepler Center for Astro and Particle Physics,University of Tübingen,Auf der Morgenstelle 14,D-72076 Tübingen,Germany

出　　处：《Chinese Physics C》2021年第2期23-38,共16页中国物理C（英文版）

基　　金：This work has been supported by DFG(CL 214/3-3);H.Cl.appreciates the support by the Munich Institute for Astro-and Particle Physics(MIAPP)which is funded by the Deutsche Forschungsgemeinschaft(DFG,German Research Foundation)under Germany's Excellence Strategy-EXC-2094-390783311。

摘　　要：Hexaquarks constitute a natural extension of complex quark systems,just as tetra-and pentaquarks do.To this end,the current status of d^(*)(2380)in both experiment and theory is reviewed.Recent high-precision meas-urements in the nucleon-nucleon channel and analyses thereof have established d^(*)(2380)as an indisputable reson-ance in the long-sought dibaryon channel.Important features of this I(J^(P))=0(3^(+))state are its narrow width and deep binding relative to the 0(1232)0(1232)threshold.Its decay branchings favor theoretical calculations predict-ing a compact hexaquark nature of this state.We review the current status of experimental and theoretical studies on d^(*)(2380)as well as new physics aspects it may bring in future.In addition,we review the situation at the 0(1232)N and N^(*)(1440)N thresholds,where evidence for a number of resonances of presumably molecular nature has been found-similar to the situation in charmed and beauty sectors.Finally,we briefly discuss the situation of dibaryon searches in the flavored quark sectors.

关 键 词：DIBARYON hexaquark MOLECULE 

分 类 号：O572.33[理学—粒子物理与原子核物理]