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hep-ph2026
A quark-diquark model for parity doublet structure of baryons
Bikai Gao, Masayasu Harada
The chiral invariant mass of baryons is a phenomenological input of parity doublet models, and its microscopic origin remains an open question. We propose that the chiral invariant…
hep-ph2025
Origin of hadron mass from gravitational D-form factor and neutron star measurements
Mamiya Kawaguchi, Masayasu Harada, Yong-Liang Ma
Clarifying the origin of hadron mass is one of the fundamental problems in particle physics, relevant from hadronic scales to astrophysical observations. At low energies, this issu…
hep-ph2024
Parity doublet model for baryon octets: ground states saturated by good diquarks and the role of bad diquarks for excited states
Bikai Gao, Toru Kojo, Masayasu Harada
Parity doublet model is an effective chiral model that includes the chiral variant and invariant masses of baryons. The chiral invariant mass has large impacts on the density depen…