Evidence for a scalar kappa(900) resonance in pi-K scattering
High Energy Physics - Phenomenology
2008-11-26 v1 Nuclear Theory
Abstract
Motivated by the expansion, we study a simple model in which the pi-K scattering amplitude is the sum of a current-algebra contact term and resonance pole exchanges. This phenomenological model is crossing symmetric and, when a putative light strange scalar meson, kappa, is included, satisfies the unitarity bounds to well above 1 GeV. The model also features chiral dynamics, vector meson dominance and appropriate interference between the established scalar K*(1430) resonance and its predicted background. We briefly discuss the physical significance of the results and directions for further work.
Cite
@article{arxiv.hep-ph/9804273,
title = {Evidence for a scalar kappa(900) resonance in pi-K scattering},
author = {D. Black and A. H. Fariborz and F. Sannino and J. Schechter},
journal= {arXiv preprint arXiv:hep-ph/9804273},
year = {2008}
}
Comments
28 pages, 17 figures