Scalars in the hadron world: the Higgs sector of the strong interaction

Details Scalars in the hadron world: the Higgs sector of the strong interaction Scalars in the hadron world: the Higgs sector of the strong interaction

2005-09-23

arxiv.org/abs/hep-ph/0509265v1

Int.J.Mod.Phys. A21 (2006) 747-756

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, 4 figures. Invited talk at the International Conference on QCD and Hadronic Physics, Beijing, June 2005. A shortened

Scientific paper

10.1142/S0217751X06031983

Scalar mesons are a key expression of the strong physics regime of QCD and the role condensates, particularly $$, play in breaking chiral symmetry. What new insights have been provided by recent experiments on $D, D_s$ and $J/\psi$ decays to light hadrons is discussed. We need to establish whether all the claimed scalars $\sigma$, $\kappa$, $f_0(1370)$, etc., really exist and with what parameters before we can meaningfully speculate further about which is transiently ${\bar q}q$, ${\bar{qq}} qq$, multi-meson molecule or largely glue.

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