Pole trajectories and amplitude lineshapes of a coupled-channel scattering with separable potential
Abstract
Some of the peak structures observed in scattering experiments are not always associated to new hadronic resonance states. If the peak appears close to some two-hadron threshold, the singularity of the scattering amplitude maybe due to the strong coupling of different channels. In this work, we solved the Lippmann-Schwinger equation using a separable potential and investigate the pole trajectories and the resulting shapes of the scattering amplitude. We found that there are cases where increasing the coupling strength of coupled channel interaction can make a weak hadron-hadron interaction strong enough to produce a peak in the scattering region.
Downloads
Published
Issue
Section
License
By submitting their manuscript to the Samahang Pisika ng Pilipinas (SPP) for consideration, the Authors warrant that their work is original, does not infringe on existing copyrights, and is not under active consideration for publication elsewhere.
Upon acceptance of their manuscript, the Authors further agree to grant SPP the non-exclusive, worldwide, and royalty-free rights to record, edit, copy, reproduce, publish, distribute, and use all or part of the manuscript for any purpose, in any media now existing or developed in the future, either individually or as part of a collection.
All other associated economic and moral rights as granted by the Intellectual Property Code of the Philippines are maintained by the Authors.
