Chiral symmetry amplitudes in the S-wave isoscalar and isovector channels and the sigma, f_0(980), a_0(980) scalar mesons (HADRON'97)
| dc.creator | Oller, J. A. | |
| dc.creator | Oset, E. | |
| dc.date | 1997-10-31 | |
| dc.date.accessioned | 2026-07-07T04:02:46Z | |
| dc.date.available | 2026-07-07T04:02:46Z | |
| dc.description | We use a non-perturbative approach which combines coupled channel Lippmann-Schwinger equations with meson-meson potentials provided by the lowest order chiral Lagrangian. By means of one parameter, a cut off in the momentum of the loop integrals, which results of the order of 1 GeV, we obtain singularities in the S-wave amplitudes corresponding to the sigma, f_0 and a_0 resonances. The ππ--> ππ, ππ--> K bar(K) phase shifts and inelasticities in the T=0 scalar channel are well reproduced as well as the π^0 eta and K bar(K) mass distributions in the T=1 channel. Furthermore, the total and partial strong decay widths of the f_0 and a_0 resonances are properly reproduced. | |
| dc.description | 4 pages, Latex, macros aipproc.sty,aipproc.cls | |
| dc.identifier | https://arxiv.org/abs/hep-ph/9710554 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/9710554 | |
| dc.identifier | Contribution to the Proceedings of HADRON'97, 25-30 August 1997, Brookhaven National Laboratory, NY | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/47372 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Chiral symmetry amplitudes in the S-wave isoscalar and isovector channels and the sigma, f_0(980), a_0(980) scalar mesons (HADRON'97) | |
| dc.type | text |