This article is cited in 71 papers

FIELDS, PARTICLES, AND NUCLEI

Is pentaquark doublet a hadronic molecule?

A. Mironov^abcd, A. Morozov<sup>adc

a</sup> Alikhanov Institute for Theoretical and Experimental Physics, 117218 Moscow, Russia
^b Lebedev Physics Institute, 119991 Moscow, Russia
^c Kharkevich Institute for Information Transmission Problems of the RAS, 127994 Moscow, Russia
^d National Research Nuclear University “MEPhI”, 115409 Moscow, Russia

Abstract: 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.

Received: 23.07.2015

Language: English

DOI: 10.7868/S0370274X15170038

 English version: Journal of Experimental and Theoretical Physics Letters, 2015, 102:5, 271–273

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