Octet and decuplet baryon self-energies in relativistic SU(3) chiral effective theory
arXiv:2012.07767 · doi:10.1103/PhysRevD.103.094019
Abstract
The self-energies of the full set of flavor SU(3) octet and decuplet baryons are computed within a relativistic chiral effective theory framework. The leading nonanalytic chiral behavior is derived for the octet and decuplet masses, and a finite-range regularization consistent with Lorentz and gauge invariance is applied to account for the finite size of the baryons. Using a four-dimensional dipole form factor, the relative importance of various meson-baryon loop contributions to the self-energies is studied numerically as a function of the dipole range parameter and meson mass, and comparison is made between the relativistic results and earlier approximations within the heavy baryon limit.
42 pages, 7 figures
References in corpus (5)
- Ab-initio Determination of Light Hadron Masses
- The lowest-lying baryon masses in covariant SU(3)-flavor chiral perturbation theory
- Octet-baryon axial-vector charges and SU(3)-breaking effects in the semileptonic hyperon decays
- Pion momentum distributions in the nucleon in chiral effective theory
- Strange quark asymmetry in the proton in chiral effective theory