Is pentaquark doublet a hadronic molecule?
A. Mironov+*×°, A. Morozov*×°
+Lebedev Physics Institute, 119991 Moscow, Russia
*likhanov Institute for Theoretical and Experimental Physics, 117218 Moscow, Russia
×National Research Nuclear University "MEPhI", 115409 Moscow, Russia
°Kharkevich Institute for Information Transmission Problems of the RAS, 127994 Moscow, Russia
A recently announced discovery by LHCb of a doublet of overlapping
pentaquark resonances poses a question of what can be the origin of this
We attract attention to the fact that such degeneracy could naturally arise
if constituent "baryon" and "meson" were in the colored, rather than
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.