期刊
JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS
卷 47, 期 5, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1361-6471/ab72b0
关键词
hadronic molecule; X(3872); pion; tensor force; quark core
资金
- Special Postdoctoral Researcher Program (SPDR) of RIKEN
- JSPS KAKENHI [JP16K05361, JP17K05441, 18H05407]
We discuss selected and important features of hadronic molecules as one of several promising forms of exotic hadrons near thresholds. Using examples of X(3872) and Z(c), emphasis is put on the roles of the one pion exchange interaction between them and their coupling to intrinsic quark states. Thus hadronic molecules emerge as admixtures of the dominant long-range hadron structure and short-range quark structure. For the pion exchange interaction, properties of the tensor force are analyzed in detail. More coupled channels supply more attractions, and heavier constituents suppress kinetic energies, providing more chances to form hadronic molecules of heavy hadrons. Throughout this article, we show details of basic ideas and methods.
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