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

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Abstract

It is pointed out that the previously suggested interpretation of the hidden-charm pentaquarks Pc(4312), Pc(4440), and Pc(4457) as molecular bound states of ςcD and ςcD∗ 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 ηcp as well as of the decays to ΛcD and to ΛcD∗. Experimental studies of these relations would thus provide an indicative probe of the molecular structure.

Original languageEnglish (US)
Article number034020
JournalPhysical Review D
Volume100
Issue number3
DOIs
StatePublished - Aug 22 2019

Bibliographical note

Funding Information:
I thank A. Bondar for illuminating discussions. This work is supported in part by U.S. Department of Energy Grant No. DE-SC0011842.

Publisher Copyright:
© 2019 authors. Published by the American Physical Society.

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