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

Abstract

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.

Erice 2007 Proceedings

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Cited by in corpus (16)

• Hadron properties in the nuclear medium
• Effective QCD and transport description of dilepton and photon production in heavy-ion collisions and elementary processes
• Phi decay: a relevant source for K- production at SIS energies?
• Dilepton production and off-shell transport dynamics at SIS energies
• Interaction of vector mesons with baryons and nuclei
• Dilepton production in nucleus-nucleus collisions at top SPS energy within the Parton-Hadron-String Dynamics (PHSD) transport approach
• Relativistic Mean-Field Models with Scaled Hadron Masses and Couplings: Hyperons and Maximum Neutron Star Mass
• Measurement of charged pions in 12C + 12C collisions at 1A GeV and 2A GeV with HADES
• Relativistic Mean-Field Model with Scaled Hadron Masses and Couplings
• Charged $\rho$-meson condensation in neutron stars
• The rho meson in a scenario of pure chiral restoration
• The width of the omega meson in the nuclear medium
• On the background in the $\gamma p\to \omega ({\pi }^0\gamma )p$ reaction and mixed event simulation
• Meson and di-electron production with HADES
• Hadrons in Medium -- Theory meets Experiment
• Selected topics on Hadrons in Nuclei