Study of $P_c(4457)$, $P_c(4440)$, and $P_c(4312)$ in a quasipotential Bethe-Salpeter equation approach

Abstract

Very recently, the LHCb Collaboration reported their new results about the pentaquarks at charm energy region. Based on the new experimental results, we recalculate the molecular states composed of a ${\Sigma }_c^{(\ast )}$ baryon and a ${\bar{D}}^{(\ast )}$ meson in a quasipotential Bethe-Salpeter equation approach. The two-peak structure around 4450 MeV can be interpreted as two ${\Sigma }_c{\bar{D}}^{\ast }$ bound states with spin parities $1/2^{-}$ and $3/2^{-}$. The newly observed pentaquark $P_c(4312)$ can be assigned as a ${\Sigma }_c\bar{D}$ bound state with spin parity $1/2^{-}$. The experimental determination of spin parities will be very helpful to understand the internal structure of these pentaquarks.

arXiv comment4 pages. Version to be published on EPJC

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Cited by in corpus (136)

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• Exploring the molecular scenario of $P_c(4312)$, $P_c(4440)$, and $P_c(4457)$
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• Hidden-charm pentaquarks and $P_c$ states
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• Analysis of the $P_c(4312)$, $P_c(4440)$, $P_c(4457)$ and related hidden-charm pentaquark states with QCD sum rules
• Spectrum of the strange hidden charm molecular pentaquarks in chiral effective field theory
• Strong decays of the latest LHCb pentaquark candidates in hadronic molecule pictures
• Molecular Interpretation of the $P_c(4440)$ and $P_c(4457)$ States
• $P_c(4457{)}^{+}$, $P_c(4440{)}^{+}$, and $P_c(4312{)}^{+}$: molecules or compact pentaquarks?
• Hidden-charm and hidden-bottom molecular pentaquarks in chiral perturbation theory
• Heavy hadronic molecules with pion exchange and quark core couplings: a guide for practitioners
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• New LHCb pentaquarks as hadrocharmonium states
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