D-term of nuclei exhibits kinks at magic neutron numbers, showing strong sensitivity of mechanical properties to shell structure.
J/ψnear threshold in holographic QCD: A and D gravitational form factors
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abstract
The diffractive photoproduction of $J/\Psi$ on a nucleon, is mostly due to gluonic exchanges at all $\sqrt{s}$. In holographic QCD (large number of colors and strong $^\prime$t Hooft coupling), these exchanges are captured by gravitons near threshold, and their Reggeized Pomeron form asymptotically. We revisit our holographic analysis of the A and D gravitational form factors in light of the new lattice data, and use them to refine our predictions for the photoproduction of $J/\Psi$ near threshold, and the comparison to the GlueX data. We use these results to estimate the scalar and mass radii of the nucleon, and describe the gravitational pressure and shear across a nucleon.
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σ-pole residues in gluon D-form factors for π, N, ρ and Δ are consistent with dilaton effective theory predictions within large uncertainties.
The scalar gluonic trace form factor G_N(t) is expressed as G_{s,g}(t) + G_{s,q}(t) - σ(t)/M, linking the QCD trace anomaly to DVCS and J/ψ observables.
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.
citing papers explorer
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Mass radius and D-term of atomic nuclei in relativistic mean field theory
D-term of nuclei exhibits kinks at magic neutron numbers, showing strong sensitivity of mechanical properties to shell structure.
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Gluon Gravitational $ D$-Form Factor: The $\sigma$-Meson as a Dilaton Confronted with Lattice Data II
σ-pole residues in gluon D-form factors for π, N, ρ and Δ are consistent with dilaton effective theory predictions within large uncertainties.
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Experimental access to the gluonic origin of the proton mass
The scalar gluonic trace form factor G_N(t) is expressed as G_{s,g}(t) + G_{s,q}(t) - σ(t)/M, linking the QCD trace anomaly to DVCS and J/ψ observables.
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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.