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Spectral change of sigma and omega mesons in a dense nuclear medium

K. Saito·K. Tsushima·A. W. Thomas
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Abstract

The spectra of the scalar ($σ$) and vector ($ω$) mesons in nuclear matter are studied in detail using the quark-meson coupling (QMC) model. It is shown that above normal nuclear matter density the effects of $σ$-$ω$ mixing and the decay of the $σ$ into $2π$ change the spectra of $σ$ and $ω$ mesons considerably. As in Quantum Hadrodynamics we find a remarkable spectral change in the $σ$ meson and the longitudinal mode of the $ω$ meson, namely a two-peak structure.

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K. Saito, K. Tsushima, A. W. Thomas. 1999-06-25. Spectral change of sigma and omega mesons in a dense nuclear medium. https://doi.org/10.1016/s0370-2693(99)00775-3

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