The low-mass sigma-meson: Is it an eyewitness of confinement?
High Energy Physics - Phenomenology
2007-05-23 v1
Abstract
In the framework of the dispersion relation N/D-method we restore the low-energy pi-pi (IJ^{PC}=00^{++})-wave amplitude sewing it with the previously obtained K-matrix solution for the region 450--1900 MeV [V.V. Anisovich, Yu.D. Prokoshkin and A.V. Sarantsev, Phys. Lett. B389, 388 (1996)]. The restored N/D-amplitude has a pole on the second sheet of the complex-s plane, near the pi-pi threshold. We discuss the hypothesis that this low-mass pole, or the low-mass sigma-meson, corresponds to the dynamical state related to the confinement forces, that is the eyewitness of confinement.
Keywords
Cite
@article{arxiv.hep-ph/9911512,
title = {The low-mass sigma-meson: Is it an eyewitness of confinement?},
author = {V. V. Anisovich and V. A. Nikonov},
journal= {arXiv preprint arXiv:hep-ph/9911512},
year = {2007}
}
Comments
9 pages, LaTeX, 7 EPS figures, epsfig.sty