Probing hidden-charm decay properties of $P_c$ states in a molecular scenario

Abstract

The $P_c(4312)$, $P_c(4440)$, and $P_c(4457)$ observed by the LHCb Collaboration are very likely to be $S$-wave ${\Sigma }_c{\bar{D}}^{(\ast )}$ molecular candidates due to their near-threshold character. In this work, we study the hidden-charm decay modes of these $P_c$ states, $P_c\to J/\psi p({\eta }_{c}p)$, using a quark interchange model. The decay mechanism for the $P_c\to J/\psi p({\eta }_{c}p)$ processes arises from the quark-quark interactions, where all parameters are determined by the mass spectra of mesons. We present our results in two scenarios. In scenario I, we perform the dynamical calculations and treat the $P_c$ states as pure ${\Sigma }_c{\bar{D}}^{(\ast )}$ molecules. In scenario II, after considering the coupled channel effect between different flavor configurations ${\Sigma }_c^{(\ast )}{\bar{D}}^{(\ast )}$, we calculate these partial decay widths again. The decay patterns in these two scenarios can help us to explore the molecular assignment and the inner flavor configurations for the $P_c$ states. In particular, the decay widths of $\Gamma (P_c(4312)\to {\eta }_{c}p)$ are comparable to the $J/\psi p$ decay widths in both of these two scenarios. Future experiments like LHCb may confirm the existence of the $P_c(4312)$ in the ${\eta }_{c}p$ channel.

arXiv comment13 pages, 7 figures, version published in PRD

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Cited by in corpus (30)

• Chiral perturbation theory for heavy hadrons and chiral effective field theory for heavy hadronic molecules
• Revisiting the nature of the $P_c$ pentaquarks
• Hadronic molecules in B decays
• Coupled-channel effects of the ${\Sigma }_c^{(\ast )}{\bar{D}}^{(\ast )}$-${\Lambda }_c(2595)\bar{D}$ system and molecular nature of the $P_c$ pentaquark states from one-boson exchange model
• Magnetic dipole moments of the hidden-charm pentaquark states: $P_c(4440)$, $P_c(4457)$ and $P_{cs}(4459)$
• $P_c(4312{)}^{+}$, $P_c(4380{)}^{+}$, and $P_c(4457{)}^{+}$ as double triangle cusps
• Mass spectrum and strong decays of tetraquark $\bar{c}\bar{s}qq$ states
• Strong decays of the newly $P_{cs}(4459)$ as a strange hidden-charm ${\Xi }_c{\bar{D}}^{\ast }$ molecule
• How to reveal the nature of three or more pentaquark states?
• Hidden-charm pentaquarks with triple strangeness due to the ${\Omega }_c^{(\ast )}{\bar{D}}_s^{(\ast )}$ interactions
• Charmed-strange tetraquarks and their decays in a potential quark model
• Newly observed $X(4630)$: a new charmoniumlike molecule
• Spectrum of the molecular pentaquarks
• Hidden-charm pentaquark states through the current algebra: From their productions to decays
• Decay behaviors of the fully-bottom and fully-charm tetraquark states
• Probing the electromagnetic properties of the ${\Sigma }_c^{(\ast )}{D}^{(\ast )}$-type doubly charmed molecular pentaquarks
• Hidden-charm pentaquark states in a mass splitting model
• Triply charmed dibaryons in the one boson exchange model
• Prompt production of the hidden charm pentaquarks in the LHC
• Exploring the spectrum of the hidden charm strange pentaquark in an SU(4) flavor-spin model
• Unravelling Pentaquarks with Born--Oppenheimer effective theory
• Doubly charmed hexaquarks in the diquark picture
• Relations between strong decay widths of the $P_c$ pentaquarks in the SU(4) flavor-spin model
• First observation of the decay ${\Lambda }_b^0\to {\eta }_c(1S)p{K}^{-}$
• Strong decays of $P_{\psi }^N(4440{)}^{+}$ and $P_{\psi }^N(4457{)}^{+}$ within the Bethe-Salpeter framework
• Strong decays of the $P_c(4312)$ and its isospin cousin via the QCD sum rules
• Hadronic molecules and multiquark states
• $P_c(4312{)}^{+}$ and $P_c(4337{)}^{+}$ as interfering ${\Sigma }_c\bar{D}$ and ${\Lambda }_c{\bar{D}}^{\ast }$ threshold cusps
• Molecular pentaquarks composed of a ground-state octet baryon and a $P-$wave anticharmed meson
• Systematic exploration of triply heavy tetraquarks: spectroscopic and decay characteristics