“…Distortions of the line shape of ρ 0 have also been observed at RHIC in p + p and peripheral Au+Au collisions [12]. Dynamical interactions with the surrounding matter [7,8,13], interference between various scattering channels [14], phase-space distortions [7,8,13,[15][16][17][18][19][20], and Bose-Einstein correlations [7,8,15,[18][19][20] are possible explanations for the apparent modification of resonance properties.…”