Chiral symmetry in electromagnetically induced resonant two hadron production

Details Chiral symmetry in electromagnetically induced resonant two hadron production Chiral symmetry in electromagnetically induced resonant two hadron production

1999-07-26

arxiv.org/abs/nucl-th/9907102v1

Physics

Nuclear Physics

Nuclear Theory

10 pages, 2 ps figures. Talk given at the IVth Workshop on "Electromagnetically Induced Two Hadron Emission", Granada (Spain),

Scientific paper

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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