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Resonances in heavy meson - heavy baryon coupled-channel interactions

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arxiv 2204.12122 v1 pith:3PFZTADG submitted 2022-04-26 hep-ph

Resonances in heavy meson - heavy baryon coupled-channel interactions

classification hep-ph
keywords statesparityresonancesspinboundcoupled-channeldifferentheavy
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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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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