Selected strong decays of pentaquark State $P_c(4312)$ in a chiral constituent quark model

Abstract

The newly confirmed pentaquark state $P_c(4312)$ has been treated as a weakly bound $({\Sigma }_c\bar{D})$ state by a well-established chiral constituent quark model and by a dynamical calculation on quark degrees of freedom where the quark exchange effect is accounted for. The obtained mass $4308$ MeV agrees with data. In this work, the selected strong decays of the $P_c(4312)$ state are studied with the obtained wave function. It is shown that the width of the ${\Lambda }_c{\bar{D}}^{\ast }$ decay is overwhelmed and the branching ratios of the $p{\eta }_c$ and $pJ/\psi$ decays are both less than 1 percentage.

13 pages, 2 figures, 3 tables

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• $P_c(4312{)}^{+}$, $P_c(4380{)}^{+}$, and $P_c(4457{)}^{+}$ as double triangle cusps
• Production of $P_{cs}(4459)$ from ${\Xi }_b$ decay
• How to reveal the nature of three or more pentaquark states?
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• Experimental constraints on the properties of $P_c$ states
• Hidden-charm pentaquark states through the current algebra: From their productions to decays
• Investigation of hidden-charm double strange pentaquark candidate $P_{css}$ via its mass and strong decays
• Strong decays of $P_{\psi }^N(4312{)}^{+}$ to $J/\psi ({\eta }_c)p$ and ${\bar{D}}^{(\ast )}{\Lambda }_c$ within the Bethe-Salpeter framework
• Investigation of a candidate spin-$\frac{1}{2}$ hidden-charm triple strange pentaquark state $P_{csss}$
• Relations between strong decay widths of the $P_c$ pentaquarks in the SU(4) flavor-spin model
• Towards modeling the short-range interactions of hidden/open charm pentaquark molecular states
• Phase shifts of the light pseudoscalar meson and heavy meson scattering in heavy meson chiral perturbation theory
• Observation of ${\Lambda }_b^0\to {\Lambda }_c^{+}{\bar{D}}^{(\ast )0}{K}^{-}$ and ${\Lambda }_b^0\to {\Lambda }_c^{+}{D}_s^{\ast -}$ decays
• Strong decays of $P_{\psi }^N(4440{)}^{+}$ and $P_{\psi }^N(4457{)}^{+}$ within the Bethe-Salpeter framework
• Structure of Nucleons and Their Interaction in the Concept of Nonperturbative QCD as a Pressing Issue of 21st-Century Physics