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arXiv · 1907.01476

Some decay properties of hidden-charm pentaquarks as baryon-meson molecules

M. B. Voloshin
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Abstract

It is pointed out that the previously suggested interpretation of the hidden-charm pentaquarks $P_c(4312)$, $P_c(4440)$ and $P_c(4457)$ as molecular bound states of $Σ_c \bar D$ and $Σ_c \bar D^*$ baryon-meson pairs gives rise to specific relations for their decays. In particular, the heavy quark spin symmetry predicts ratios of rates of decays of each of the molecules to $J/ψp$ and to $η_c p$ as well as of the decays to $Λ_c \bar D$ and to $Λ_c \bar D^*$. Experimental studies of these relations would thus provide an indicative probe of the molecular structure.

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M. B. Voloshin. 2019-07-02. Some decay properties of hidden-charm pentaquarks as baryon-meson molecules. https://doi.org/10.1103/physrevd.100.034020

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