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arXiv · 2204.12122

Resonances in heavy meson - heavy baryon coupled-channel interactions

Zheng-Li Wang·Chao-Wei Shen·Deborah Rönchen·Ulf-G. Meißner·Bing-Song Zou
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Abstract

The interactions of $\bar{D}^{(*)} \Lambda_c - \bar{D}^{(*)}\Sigma_c^{(*)}$ are studied within the framework of a dynamical coupled-channel approach. A series of bound states and resonances with different spin and parity are dynamically generated in the hidden charm sector. Four $S$-wave bound states are found in the mass range of 4.3 to 4.5 GeV, close to the pentaquark states observed by LHCb. Two of the states have a spin parity of $J^P= 1/2^-$ and the other two have $J^P=3/2^-$. In addition, several resonances with different spin and parity in higher partial waves are predicted.

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Zheng-Li Wang, Chao-Wei Shen, Deborah Rönchen, Ulf-G. Meißner, Bing-Song Zou. 2022-04-26. Resonances in heavy meson - heavy baryon coupled-channel interactions. https://doi.org/10.1140/epjc%2Fs10052-022-10462-2

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