S-wave meson scattering up to 2 GeV and its spectroscopy
Abstract
We have performed a thorough study of the meson-meson S-waves with isospin (I) 0 and 1/2, up to sqrt(s) ~ 2 GeV. This is the first study that includes 13 channels that have their threshold below that energy. All the resonances below 2 GeV, namely the f_0(600) or sigma, f_0(980), f_0(1370), f_0(1500), f_0(1710) and f_0(1790) for I=0, and the K*_0(800) or kappa, K*_0(1430) and K*_0(1950) for I=1/2, are generated. We can then extract a clear picture of the spectroscopy, finding that the f_0(1710), together with an important contribution to the f_0(1500), are glueballs. Another pole, which corresponds mainly to the f_0(1370), is a pure octet I=0 state, and does not mix with the glueball.
Keywords
Cite
@article{arxiv.0804.2341,
title = {S-wave meson scattering up to 2 GeV and its spectroscopy},
author = {M. Albaladejo and J. A. Oller and C. Piqueras},
journal= {arXiv preprint arXiv:0804.2341},
year = {2009}
}
Comments
5 pages, 1 figure. Talk given at SCADRON 70 (Workshop on Scalar Mesons and Related Topics, Lisbon, 11-16 February 2008)