Chiral symmetry in electromagnetically induced resonant two hadron production

E. Oset; A. Ramos; E. Marco; J. C. Nacher; H. Toki

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Chiral symmetry in electromagnetically induced resonant two hadron production

E. Oset·A. Ramos·E. Marco·J. C. Nacher·H. Toki

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Abstract

We report on recent progress on the chiral unitary approach, analogous to the effective range expansion in Quantum Mechanics, which is shown to have a much larger convergence radius than ordinary chiral perturbation theory, allowing one to reproduce data for meson meson interaction up to 1.2 GeV. Applications to physical processes so far unsuited for a standard chiral perturbative approach are presented, in which two hadrons, either two mesons or a meson and a baryon, in a resonant state are produced in photoproduction processes.

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E. Oset, A. Ramos, E. Marco, J. C. Nacher, H. Toki. 1999-07-26. Chiral symmetry in electromagnetically induced resonant two hadron production. https://arxiv.org/abs/nucl-th/9907102

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