E. Oset, J. A. Oller, J. R. Pelaez, A. Ramos, H. C. Chiang, F. Guerrero, S. Hirenzaki, T. S. H. Lee, E. Marco, J. C. Nacher, Y. Okumura, A. Parreno, H. Toki, M. Vicente-Vacas
Published 1999-02-01Version 1
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. Results for the extension of these ideas to the meson baryon sector are discussed, together with applications to kaons in a nuclear medium and $K^-$ atoms.
Comments: Contribution to the KEK Tanashi Symposium on Physics of Hadrons and Nuclei, Tokyo, December 1998, 10 pages, 3 postscript figures. To be published as a special issue of Nuclear Physics A
Journal: Nucl.Phys.A670:111-118,2000
$N^*(1920)(1/2^+)$ state in the $NK\bar{K}$ system
Origin of resonances in the chiral unitary approach
Scalar Lambda N and Lambda Lambda interaction in a chiral unitary approach
