Interpretation of the LHCb Pc(4312) Signal

Abstract

We study the nature of the new signal reported by LHCb in the J/psi p spectrum. Based on the S-matrix principles, we perform a minimum-bias analysis of the underlying reaction amplitude, focusing on the analytic properties that can be related to the microscopic origin of the Pc(4312) peak. By exploring several amplitude parametrizations, we find evidence for the attractive effect of the Sigma_c+ D0bar channel, which is not strong enough, however, to form a bound state.

arXiv comment6 pages + Supplemental material. Version accepted for publication in Physical Review Letters

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• A Review on Partial-wave Dynamics with Chiral Effective Field Theory and Dispersion Relation
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• Can discovery of hidden charm strange pentaquark states help determine the spins of $P_c(4440)$ and $P_c(4457)$?
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• Analysis of the strong decays of the $P_c(4312)$ as a pentaquark molecular state with QCD sum rules
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• Axial meson exchange and the $Z_c(3900)$ and $Z_{cs}(3985)$ resonances as heavy hadron molecules
• Pion-induced production of hidden-charm pentaquarks $P_c(4312),P_c(4440)$, and $P_c(4457)$
• Heavy Flavour Physics and CP Violation at LHCb: a Ten-Year Review
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• Spin-parities of the $P_c(4440)$ and $P_c(4457)$ in the One-Boson-Exchange Model
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• Decay properties of $P_c$ states through the Fierz rearrangement
• $P_c$ Resonances in the Compact Pentaquark Picture
• Triply charmed dibaryons in the one boson exchange model
• Systematic study on production of hidden-bottom pentaquark via $\gamma p$ and ${\pi }^{-}p$ scatterings
• Three-body molecules $\bar{D}{\bar{D}}^{\ast }{\Sigma }_c$- understanding the nature of $T_{cc}$, $P_c(4312)$, $P_c(4440)$ and $P_c(4457)$
• Hidden-bottom molecular states from ${\Sigma }_b^{(\ast )}{B}^{(\ast )}-{\Lambda }_b{B}^{(\ast )}$ interaction
• Identify the hidden charm pentaquark signal from non-resonant background in electron-proton scattering
• Study on possible molecular states composed of ${\Lambda }_c\bar{D}$ (${\Lambda }_{b}B$) and ${\Sigma }_c\bar{D}$ (${\Sigma }_{b}B$) within the Bethe-Salpeter framework
• Exotic pentaquark states with the $qqQQ\bar{Q}$ configuration
• Exploring the spectrum of the hidden charm strange pentaquark in an SU(4) flavor-spin model
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• Substructure of Multiquark Hadrons (Snowmass 2021 White Paper)
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• Production of vector mesons in pentaquark states resonance channel in $p$-$A$ ultraperipheral collisions
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• Towards modeling the short-range interactions of hidden/open charm pentaquark molecular states
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• $N^{\ast }$ states with hidden charm and a three-body nature
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