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1998•Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fieldsOpen access

Aspects of quenched chiral perturbation theory for matter fields

Chi-Keung Chow

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Abstract

Three topics about the application of quenched chiral perturbation theory to matter fields are studied. It is proved that the hairpin axial vector current couplings in quenched chiral perturbation theories do not contribute to the quenched chiral singularities for one-chiral-loop renormalization of matter field properties. The modification of mass corrections in the chiral limit due to nonzero mass splittings are studied, and selection rules for hadron decays in quenched QCD are obtained.

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Three topics about the application of quenched chiral perturbation theory to matter fields are studied. It is proved that the hairpin axial vector current couplings in quenched chiral perturbation theories do not contribute to the quenched chiral singularities for one-chiral-loop renormalization of matter field properties. The modification of mass corrections in the chiral limit due to nonzero mass splittings are studied, and selection rules for hadron decays in quenched QCD are obtained.

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Available abstract

Three topics about the application of quenched chiral perturbation theory to matter fields are studied. It is proved that the hairpin axial vector current couplings in quenched chiral perturbation theories do not contribute to the quenched chiral singularities for one-chiral-loop renormalization of matter field properties. The modification of mass corrections in the chiral limit due to nonzero mass splittings are studied, and selection rules for hadron decays in quenched QCD are obtained.

Key concepts: Chiral perturbation theory, Physics, Chiral anomaly, Quantum chromodynamics, Renormalization, Particle physics, Effective field theory, Gravitational singularity

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