Experimental Signature of Medium Modifications for rho and omega Mesons in the 12 GeV p + A Reactions

M. Naruki, H. Funahashi, Y. Fukao +23

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 omega meson pea…