Experimental Signature of Medium Modifications forρandωMesons in the 12 GeVp+AReactions

2005/04/30 by M. Naruki, H. Funahashi, Y. Fukao +27 · 13 citations
Physics and Astronomy · #Hadron #High-Energy Particle Collisions Research #Meson #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #nucl-ex

paper · pdf · doi:10.1103/physrevlett.96.092301

published as Phys.Rev.Lett.96:092301,2006 · 4 pages, 3 figures, Version accepted for Physical Review Letter

openalex publication_date 2006/03/10 · arxiv created 2006/03/15 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

The invariant mass spectra of e+e- pairs produced in 12 GeV proton-induced nuclear reactions are measured at the KEK Proton Synchrotron. On the low-mass side of the meson peak, a significant enhancement over the known hadronic sources has been observed. The mass spectra, including the excess, are well reproduced by a model that takes into account the density dependence of the vector meson mass modification, as theoretically predicted.

Cited by

• Electromagnetic Probes
• Medium Modifications of Hadron Properties and Partonic Processes
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• Nuclear effects on the ρ meson produced in the inclusive photonuclear reaction
• Search for Medium Modifications of theρMeson
• Medium modifications of theρmeson in nuclear photoproduction
• In-medium ω meson mass and quark condensate in a Nambu–Jona-Lasinio model constrained by recent experimental data
• Transport-theoretical description of nuclear reactions
• Light vector mesons in the nuclear medium
• The πρ cloud contribution to the ω width in nuclear matter
• In-medium modified energy-momentum tensor form factors of the nucleon within the framework of a π-ρ-ω soliton model
• Nuclear-bound quarkonia and heavy-flavor hadrons
• QCD sum rule for open strange meson K1± in nuclear matter