Rho-Like Mesons from Analysis of the Pion-Pion Scattering
High Energy Physics - Phenomenology
2008-06-02 v2
Abstract
Considering analyticity, unitarity and an influence of coupled channels, experimental data on the isovector P-wave of pion-pion scattering was analyzed to study rho-like mesons below 1900 MeV. The analysis indicates evidently that in the energy range 1200--1800 MeV, there are three rho-like mesons: rho(1250), rho(1450) and rho(1600), unlike the PDG tables. The obtained P-wave pion-pion scattering length (a_1^1=33.9+- 2.02 [10^{-3}m_{pi^+}^{-3}]) most matches to the one calculated in the local Nambu--Jona-Lasinio model.
Keywords
Cite
@article{arxiv.0711.4748,
title = {Rho-Like Mesons from Analysis of the Pion-Pion Scattering},
author = {Yu. S. Surovtsev and P. Bydzovsky},
journal= {arXiv preprint arXiv:0711.4748},
year = {2008}
}
Comments
LaTex, 2 figures, 12 pages; presented at the XII Int. Conf. on Hadron Spectroscopy - Hadron07 (8-13 October 2007, Frascati, Italy). Corrected version