Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2002-05-17
Physics
Nuclear Physics
Nuclear Theory
12 pages revtex4, 4 figures
Scientific paper
We establish the extent to which photons and dileptons are penetrating probes of hot hadronic matter by computing mean free paths. Absorption is indeed negligible for real photons as mean free paths are roughly tenths of \AAngstr\"oms. However, vector dominance effects, which provide rich structure in virtual photon mass spectra, introduce nonnegligible reabsorption and rehadronization resulting in mean free paths of the order of tens of femtometers. Consequences are illustrated by considering the net dilepton yield near the rho peak via thermal \pi\pi annihilation from a short-lived hadronic fireball. Results suggest that disappearance of the rho in heavy-ion collisions can be due in part to reabsorption/rehadronization rather than solely due to collective effects.
No associations
LandOfFree
On the Penetrating Nature of Electromagnetic Probes does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with On the Penetrating Nature of Electromagnetic Probes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On the Penetrating Nature of Electromagnetic Probes will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-599035