σ and ω meson propagation in a dense nuclear medium
نویسندگان
چکیده
منابع مشابه
Spectral change of σ and ω mesons in a dense nuclear medium
Spectral change of σ and ω mesons in a dense nuclear medium 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 ...
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The masses of the scalar (σ) and vector (ω) mesons and their widths 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 scalar meson mass considerably, while the vector meson mass remains near its mean-field value. We compare the QMC results wi...
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We calculate the effective mass m∗ω of the ω-meson in nuclear medium by the σ-ω model with a vector field self-interaction (VFSI). We found that the direct and the indirect effects of the VFSI almost cancel each other and the result is changed only slightly at the normal density. The VFSI makes m∗ω smaller at lower density and makes m ∗ ω larger at higher density. However, both effects are not ...
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The properties of vector mesons in nuclear matter are discussed. Results for the momentum dependence of the ρ-meson self energy in matter due to ρN interactions are presented, and consequences for the production rate of e+e− pairs in hot and dense matter are discussed. I also examine the constraints imposed by elementary processes on the widths of ρ and ω mesons in nuclear matter, and conclude ...
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The properties of vector mesons in nuclear matter are discussed. Results for the momentum dependence of the ρ-meson self energy in matter due to ρN interactions are presented, and consequences for the production rate of e+e− pairs in hot and dense matter are discussed. I also examine the constraints imposed by elementary processes on the widths of ρ and ω mesons in nuclear matter, and conclude ...
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تاریخ انتشار 1998