Medium Modifcations of Mesons in Elementary Reactions and Heavy-Ion Collisions

Details Medium Modifcations of Mesons in Elementary Reactions and Heavy-Ion Collisions Medium Modifcations of Mesons in Elementary Reactions and Heavy-Ion Collisions

2007-11-29

arxiv.org/abs/0711.4709v3

Prog.Part.Nucl.Phys.61:245-252,2008

Physics

Nuclear Physics

Nuclear Experiment

Erice 2007 Proceedings

Scientific paper

10.1016/j.ppnp.2007.12.041

Experimental searches for modifications of vector mesons in the nuclear medium are reviewed. Data on $\rho,\omega$ and $\Phi$ mesons are presented. The results have been obtained in elementary reactions with proton and photon beams as well as in heavy-ion collisions. Compared to the free particle properties, the $\omega$ and $\Phi$ meson are found to drop in mass at normal nuclear matter density by 9-14% and 3.5% whereas their widths are reported to increase by factors of about 16 and 3.6, respectively. For the $\rho$ meson, conflicting results on in-medium mass shifts and broadening have been published. The experimental data are compared to recent model calculations.

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