Kaon polarizability in the Nambu-Jona-Lasinio model at zero and finite temperature

Details Kaon polarizability in the Nambu-Jona-Lasinio model at zero and finite temperature Kaon polarizability in the Nambu-Jona-Lasinio model at zero and finite temperature

1996-04-24

arxiv.org/abs/hep-ph/9604396v2

Phys.Atom.Nucl.60:796-803,1997; Yad.Fiz.60N5:891-899,1997

Physics

High Energy Physics

High Energy Physics - Phenomenology

14pages in LaTeX+3 uuencode postscript figures

Scientific paper

Using recent data for the decays $f_0 \to \gamma\gamma$, $f_0 \to \pi \pi$, we determine the mixing angle of scalar mesons in a chiral quark $\sigma$-model. This value is employed to analyze of the kaon polarizability. It is shown that pole diagrams from intermediate scalar mesons and their mixing angle significantly affect the electromagnetic polarizability of charged and neutral kaons. Our results are compared with other models and the results of the chiral symmetry limit. The temperature dependence of the kaon polarizabilities is investigated.

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