Dynamical Polarizabilities of SU(3) Octet of Baryons

Abstract

We present calculations and an analysis of the spin-independent dipole electric and magnetic dynamical polarizabilities for the lowest in mass SU(3) octet of baryons. These extensive calculations are made possible by the recent implementation of semi-automatized calculations in Chiral Perturbation Theory which allows evaluating dynamical spin-independent electromagnetic polarizabilities from Compton scattering up to next-to-the-leading order. Our results are in good agreement with calculations performed for nucleons found in the literature. The dependencies for the range of photon energies up to 1 GeV, covering the majority of the meson photo production channels, are analyzed. The separate contributions into polarizabilities from the various baryon meson clouds are studied.

arXiv comment10 pages, 7 figures, extended analysis of hyperon polarizabilities

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Cited by in corpus (8)

• Using effective field theory to analyse low-energy Compton scattering data from protons and light nuclei
• Nucleon Polarizabilities: from Compton Scattering to Hydrogen Atom
• Dispersive estimate of the electromagnetic charge symmetry violation in the octet baryon masses
• First extraction of the scalar proton dynamical polarizabilities from real Compton scattering data
• Octet Baryons in Large Magnetic Fields
• Hadron Structure in Chiral Perturbation Theory
• Hyperon forward spin polarizabilty gamma0
• Magnetic Polarisability of Octet Baryons via Lattice QCD