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arXiv · 1911.09250

Hidden charm pentaquark states and $\Sigma_c^{(*)}\bar{D}^{(*)}$ interaction in chiral perturbation theory

Lu Meng·Bo Wang·Guang-Juan Wang·Shi-Lin Zhu
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Abstract

We adopt the chiral perturbation theory to calculate the $\Sigma_{c}^{(*)}\bar{D}^{(*)}$ interaction to the next-to-leading order (NLO) and include the couple-channel effect in the loop diagrams. We reproduce the three $P_c$ states in the molecular picture after including the $\Lambda_{c}\bar{D}^{(*)}$ intermediate states. We also discuss some novel observations arising from the loop diagrams.

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Lu Meng, Bo Wang, Guang-Juan Wang, Shi-Lin Zhu. 2019-11-21. Hidden charm pentaquark states and $\Sigma_c^{(*)}\bar{D}^{(*)}$ interaction in chiral perturbation theory. https://arxiv.org/abs/1911.09250

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