Chiral Symmetry and Hyperfine Quark-Antiquark Splittings

Details Chiral Symmetry and Hyperfine Quark-Antiquark Splittings Chiral Symmetry and Hyperfine Quark-Antiquark Splittings

2003-11-20

arxiv.org/abs/hep-ph/0311246v2

Eur.Phys.J. C33 (2004) S521-S523

Physics

High Energy Physics

High Energy Physics - Phenomenology

European HEP conference proceedings (Aachen, July 2003). A few typographical errors corrected

Scientific paper

10.1140/epjcd/s2003-03-510-9

We briefly review theoretical calculations for the pseudoscalar-vector meson hyperfine splitting with no open flavor and also report a many body field theoretical effort to assess the impact of chiral symmetry in the choice of effective potentials for relativistic quark models. Our calculations predict the missing eta_b meson to have mass near 9400 $MeV$. The radial excitation $\eta_c(2S)$ is in agreement with the measurements of the BELLE and most recently BABAR collaborations.

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