Review of Scalar Mesons
High Energy Physics - Phenomenology
2008-11-26 v1
Abstract
The formulae needed to parametrise sigma, kappa, a0(980) and f0(980) are reviewed. For sigma and kappa, the Adler zero due to Chiral Symmetry Breaking plays a crucial role. The f0(980) and a0(980) are locked to the KK threshold by a cusp mechanism which leads to a sharp peak in attraction at the threshold. This mechanism may play a wider role. A novel suggestion is that the confinement potential involves a cooperative effect between QCD effects (coloured quarks and gluons) and conventional meson exchanges.
Keywords
Cite
@article{arxiv.0804.3450,
title = {Review of Scalar Mesons},
author = {D. V. Bugg},
journal= {arXiv preprint arXiv:0804.3450},
year = {2008}
}
Comments
10 pages. Proc. Lisbon meeting on Scalar Mesons, Feb 10-16