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arXiv · 2401.14767

Magnetic moments and axial charges of the octet hidden-charm molecular pentaquark family

Hao-Song Li·Fei Guo·Ya-Ding Lei·Feng Gao
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Abstract

In this work, we calculate the magnetic moment and axial charge of the octet hidden-charm molecular pentaquark family in quark model. The Coleman-Glashow sum-rule for the magnetic moments of pentaquark family is always fulfilled independently of SU(3) symmetry breaking. In the $ 8_{2f} $ flavor representation, the magnetic moments of hidden-charm molecular pentaquark states with spin configuration $J^{P}=\frac{1}{2}^{-}(\frac{1}{2}^{+}\otimes0^{-})$ are all equal to $\mu_{c}=0.38\mu_{N}$. The axial charges of octet hidden-charm molecular pentaquark states are quite small compared to the axial charge of nucleon. The axial charges of the pentaquark states with the spin configuration $J^{P}=\frac{1}{2}^{-}(\frac{1}{2}^{+}\otimes0^{-})$ in $8_{2f}$ flavor representation are all zero.

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Hao-Song Li, Fei Guo, Ya-Ding Lei, Feng Gao. 2024-01-26. Magnetic moments and axial charges of the octet hidden-charm molecular pentaquark family. https://arxiv.org/abs/2401.14767

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