Density dependence of resonance broadening and shadowing effects in nuclear photoabsorption

Boffi, S.; Golubeva, Ye.; Kondratyuk, L. A.; Krivoruchenko, M. I.; Perazzi, E.

Density dependence of resonance broadening and shadowing effects in nuclear photoabsorption

Authors

Description

Medium effects as a function of the mass number $A$ are studied in the total photonuclear cross section from the $Δ$-resonance region up to the region where shadowing effects are known to exist. A consistent picture is obtained by simply assuming a density dependence of the different mechanisms of resonance broadening and shadowing. The $Δ$-mass shift is found to increase with $A$.
7 pages, LaTeX, 2 figures available from the authors