Review of Scalar Mesons

Details Review of Scalar Mesons Review of Scalar Mesons

2008-04-22

arxiv.org/abs/0804.3450v1

AIPConf.Proc.1030:3-12,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages. Proc. Lisbon meeting on Scalar Mesons, Feb 10-16

Scientific paper

10.1063/1.2973538

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.

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