Is the pentaquark doublet a hadronic molecule?

被引：0
|
作者：
A. Mironov
A. Morozov
机构：
[1] Lebedev Physical Institute,Kharkevich Institute for Information Transmission Problems
[2] Alikhanov Institute for Theoretical and Experimental Physics,undefined
[3] National Research Nuclear University MEPhI,undefined
[4] Russian Academy of Sciences,undefined
来源：
JETP Letters | 2015年 / 102卷
关键词：
JETP Letter; Heavy Quark; Color Singlet; Doublet Structure; Multiquark State;
D O I：
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中图分类号：
学科分类号：
摘要：
A recently announced discovery by LHCb of a doublet of overlapping pentaquark resonances poses a question of what can be the origin of this doublet structure. We attract attention to the fact that such degeneracy could naturally arise if constituent “baryon” and “meson” were in the colored, rather than colorless states. This is an appealing possibility, also because in such a case the pentaquark state would be no less “elementary” than the other hadrons, and would provide a chance for essentially new non-Abelian chemistry.
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页码：271 / 273
页数：2
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