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Chiral Symmetry and Hyperfine Quark-Antiquark Splittings

Felipe J. Llanes-Estrada·Stephen R. Cotanch·Adam P. Szczepaniak·Eric S. Swanson
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Abstract

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 $η_c(2S)$ is in agreement with the measurements of the BELLE and most recently BABAR collaborations.

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Felipe J. Llanes-Estrada, Stephen R. Cotanch, Adam P. Szczepaniak, Eric S. Swanson. 2004-02-24. Chiral Symmetry and Hyperfine Quark-Antiquark Splittings. https://doi.org/10.1140/epjcd%2Fs2003-03-510-9

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