Why $f_0(500)$ Must Be Narrower?
R. Kamiński · Acta Physica Polonica B Proceedings Supplement · 2014
In this paper, we discuss the γp → K 0 Σ + and γn → K 0 Σ 0 reactions, with a peculiar behavior around the K * 0 Λ threshold, due to a 1/2 -resonance around 2035 MeV.Similarly, we discuss a BES experiment, J/ψ → ηK * 0 K * 0 decay, which supports the existence of a new h 1 resonance around 1830 MeV that was predicted from the vector-vector interaction.A short discussion is then made about recent advances in the charm and beauty sectors.