期刊
CHINESE PHYSICS C
卷 42, 期 2, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1674-1137/42/2/023106
关键词
coupled-channel interactions; heavy meson; heavy baryon; exotic baryons
资金
- DFG [DFG TR110, CRC 110]
- NSFC [CRC 110, NSFC 11621131001]
- NSFC fund [11647601]
- CAS President's International Fellowship Initiative (PIFI) [2017VMA0025]
We use a unitary coupled-channel model to study the (D) over bar Lambda(c)-(D) over bar Sigma(c) interactions. In our calculation, SU(3) flavor symmetry is applied to determine the coupling constants. Several resonant and bound states with different spin and parity are dynamically generated in the mass range of the recently observed pentaquarks. The approach is also extended to the hidden beauty sector to study the B Lambda(b)-B Sigma(b) interactions. As the b-quark mass is heavier than the c-quark mass, there are more resonances observed for the B Lambda(b)-B Sigma(b) interactions and they are more tightly bound.
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