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Hidden-charm molecular pentaquarks and their charm-strange partners · arXivDesk

1601.03233Jan 13, 2016Invited paper for NPA special issue on Recent Progress in Strangeness and Charm Nuclear Physics. 23 pages, 3 figures and 7 tables. The version accepted by NPA

Hidden-charm molecular pentaquarks and their charm-strange partners

Rui Chen, Xiang Liu, Shi-Lin Zhu

Phenomenology Experiment

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Abstract

In the framework of one-pion-exchange (OPE) model, we study the hidden-charm and charm-strange molecular pentaquark systems composed of a heavy baryon $(Σ_c, Σ_c^*)$ and a vector meson $(\bar{K}^*, \bar{D}^*)$

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, where the S-D mixing effect is considered in our calculation. Our result shows that the

Σ_c\bar{D}^*

molecular state with

(I=1/2,J^P=3/2^-)

and the

Σ_c^*\bar{D}^*

molecular state with

(I=1/2,J^P=5/2^-)

exist in the mass range of the observed

P_c(4380)

and

P_c(4450)

, respectively. Moreover, we predict two other hidden-charm molecular pentaquarks with configurations

Σ_c\bar{D}^*

(I=3/2, J^P=1/2^-)

and

Σ_c^*\bar{D}^*

(I=3/2, J^P=1/2^-)

and two charm-strange molecular pentaquarks

P_{cs}(3340)

and

P_{cs}(3400)

corresponding to the

Σ_c\bar{K}^*

configuration with

(I=1/2, J^P=3/2^-)

and the

Σ_c^*\bar{K}^*

configuration with

(I=1/2, J^P=5/2^-)

, respectively. Additionally, we also predict some hidden-bottom

Σ_b^{(*)}B^*

and

B_c

-like

Σ_c^{(*)}B^*/Σ_b^{(*)}\bar{D}^*

pentaquarks.

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