Recent progress on the chiral unitary approach to meson meson and meson baryon interactions
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.
Oset Báguena, Eulogio Oller Berber, José Antonio Peláez Sagredo, José Ramón Ramos, A. Chiang, H.C. Guerrero Cortina, Francisco Hirenzaki, Satoru Lee, Tsung-Shung Harry Marco Rubio, Eugenio Nácher Díez, José Carlos Okumura, Yasuyuki Parreño García, Assumpta Toki, Hiroshi Vicente Vacas, Manuel José 2000 Recent progress on the chiral unitary approach to meson meson and meson baryon interactions Nuclear Physics A 670 111 118