Pi-pi scattering at low energy: S-wave phase shifts and scattering lengths
High Energy Physics - Phenomenology
2007-05-23 v2
Abstract
It is shown that the linear correlation relates the S-wave phase shifts from the threshold up to dipion mass 900 MeV. By using this correlation at the solution of the Roy equations, the accuracy of determination of S-wave lengths is considerably improved. The obtained result unambiguously witnesses in favor of the standard ChPT version with large quark condensate.
Keywords
Cite
@article{arxiv.hep-ph/0308162,
title = {Pi-pi scattering at low energy: S-wave phase shifts and scattering lengths},
author = {V. N. Maiorov and O. O. Patarakin},
journal= {arXiv preprint arXiv:hep-ph/0308162},
year = {2007}
}
Comments
8 pages, 4 postscript figures, LaTeX; typos corrected, references updated and expanded, added more material in Sect.3