Comparing the Broken U3xU3 Linear Sigma Model with Experiment. U3xU3
High Energy Physics - Phenomenology
2008-11-26 v2
Abstract
The linear sigma model with broken U3xU3 is compared with data on the lightest scalar and pseudoscalar mesons. When 5 of the 6 parameters are fixed by the pseudoscalar masses and decay constants one finds that, already at the tree level, a reasonable description for the 4 scalar masses, mixing and up to 8 tri-linear couplings of lightest scalars, taken as a0(980), f0(980), sigma(500) and K*0(1430). This clearly indicates that these scalars are the chiral partners of the pi, eta, eta', K and strongly suggests that they like the latter are (unitarized) quark-antiquark states.
Keywords
Cite
@article{arxiv.hep-ph/9905282,
title = {Comparing the Broken U3xU3 Linear Sigma Model with Experiment. U3xU3},
author = {Nils A. Tornqvist},
journal= {arXiv preprint arXiv:hep-ph/9905282},
year = {2008}
}
Comments
12 pages revtex, 1 figure, 2 tables, minor corrections, To appear in Eur. Phys. Journal C