Neural-network quantum states applied to HAL QCD meson-nucleon potentials predict bound states for phi at A>=2, J/psi at A>=4, and eta_c at A>=6, with binding energies from tens of MeV to sub-MeV scales.
Aliet al.[The GlueX Collaboration], Phys
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The M1 radiative decay width Pc(4457)(3/2-) → Pc(4312)(1/2-)γ is computed as 6.7 keV (range 2-9 keV) via 19 triangle loops with photon coupling to molecular components.
The u-channel Lambda_c exchange enhances rescattering via Dbar(*) Sigma_c states in the piN to J/psiN reaction, producing clear peaks for Pc(4312) (1/2^-) and Pc(4457) (3/2^-) at microbarn cross sections while suppressing other states.
Hidden-charm pentaquarks do not appear in J/ψ photoproduction because rescattering from ar{D}^{(*)}Σ_c intermediate states is suppressed relative to ar{D}^{(*)}Λ_c by a factor of roughly five in the relevant couplings.
Near-threshold J/psi photoproduction data are compatible with the OPE energy dependence, but cannot distinguish target-mass-corrected from uncorrected predictions or locate the transition to high-energy diffraction.
Calculations of excitation functions, momentum spectra, and transparency ratios for χ_c1(1P) on 12C and 184W nuclei demonstrate sensitivity to different absorption cross-section scenarios, proposed for extraction via future CEBAF data.
A hadronic approach based on dispersion relations and meson dominance achieves a successful description of lattice QCD data for gravitational form factors of pions and nucleons.
The EIC Yellow Report specifies the science goals, required detector capabilities, and technology concepts needed to realize a high-luminosity electron-ion collider program.
citing papers explorer
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Meson-Nucleus Bound States with Neural-Network Quantum States
Neural-network quantum states applied to HAL QCD meson-nucleon potentials predict bound states for phi at A>=2, J/psi at A>=4, and eta_c at A>=6, with binding energies from tens of MeV to sub-MeV scales.
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Radiative decays of dynamically generated pentaquarks in the chiral unitary approach: the $P_c(4457)\to P_c(4312)\,\gamma$ transition
The M1 radiative decay width Pc(4457)(3/2-) → Pc(4312)(1/2-)γ is computed as 6.7 keV (range 2-9 keV) via 19 triangle loops with photon coupling to molecular components.
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Probing hidden-charm pentaquarks from the $\pi N\rightarrow J/\psi N$ reaction
The u-channel Lambda_c exchange enhances rescattering via Dbar(*) Sigma_c states in the piN to J/psiN reaction, producing clear peaks for Pc(4312) (1/2^-) and Pc(4457) (3/2^-) at microbarn cross sections while suppressing other states.
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Nonexistence of hidden-charm pentaquarks in $J/\psi$ photoproduction
Hidden-charm pentaquarks do not appear in J/ψ photoproduction because rescattering from ar{D}^{(*)}Σ_c intermediate states is suppressed relative to ar{D}^{(*)}Λ_c by a factor of roughly five in the relevant couplings.
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Near-Threshold OPE Constraints and High-Energy Diffractive Dynamics in J/psi Photoproduction
Near-threshold J/psi photoproduction data are compatible with the OPE energy dependence, but cannot distinguish target-mass-corrected from uncorrected predictions or locate the transition to high-energy diffraction.
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Absorption of 1$P$-wave heavy charmonium $\chi_{c1}(1P)$ in nuclei
Calculations of excitation functions, momentum spectra, and transparency ratios for χ_c1(1P) on 12C and 184W nuclei demonstrate sensitivity to different absorption cross-section scenarios, proposed for extraction via future CEBAF data.
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Particle seismology: mechanical and gravitational properties from parton-hadron duality
A hadronic approach based on dispersion relations and meson dominance achieves a successful description of lattice QCD data for gravitational form factors of pions and nucleons.
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Science Requirements and Detector Concepts for the Electron-Ion Collider: EIC Yellow Report
The EIC Yellow Report specifies the science goals, required detector capabilities, and technology concepts needed to realize a high-luminosity electron-ion collider program.