期刊
INTERNATIONAL JOURNAL OF MODERN PHYSICS A
卷 28, 期 29, 页码 -出版社
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S0217751X13300457
关键词
Exotic hadrons; hadron structure; compositeness; elementariness; resonances
资金
- MEXT
- JSPS [24105702, 24740152]
- Grants-in-Aid for Scientific Research [24740152, 24105702] Funding Source: KAKEN
The structure of the hadron resonances attracts much attention, in association with the recent observations of various exotic hadrons which do not fit well in the conventional picture. These findings urge us to consider various new configurations such as the multiquark states and the hadronic molecules. However, it is a subtle problem to define a proper classification scheme for the hadron structure, and the nonzero decay width of the hadron resonances makes the analysis complicated. In this paper, we summarize the recent developments in the studies of the structure of the hadron resonances, focusing on the notion of the compositeness in terms of the hadronic degrees of freedom.
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