Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9851372 | Nuclear Physics A | 2005 | 30 Pages |
Abstract
We use the unitarized coupled channel approach to also investigate all the other possible values of strangeness and isospin. We find two bound states in the SU(3) limit corresponding to the octet and decuplet representations. These are found to split into eight different trajectories in the complex plane when the SU(3) symmetry is broken gradually. Finally, we are able to provide a reasonable description for a good number of 4-star 32â resonances listed by the Particle Data Group. In particular, the Î(1820), the Î(1520) and the Σ(1670) states are well reproduced. We predict a few other resonances and also evaluate the couplings of the observed resonances to the various channels from the residues at the poles of the scattering matrix from where partial decay widths into different channels can be evaluated.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
Sourav Sarkar, E. Oset, M.J. Vicente Vacas,