Abstract
Motivated by pion productions in high-energy heavy-ion collisions, we study the $p$-wave pion absorption in highly excited nuclear matter. The basic absorption mechanism is the two-nucleon model with both pion and rho-meson rescattering. The excited nuclear matter is modeled by a finite temperature Fermi gas. We deduce that for a given pion kinetic energy, the mean free path for pion absorption depends weakly on the temperature of the nuclear matter, but strongly on the density. Its relevance to high-energy heavy-ion collisions is discussed.NUCLEAR REACTIONS intermediate energy: high-energy heavy-ion collisions, pion production and absorption, highly excited nuclear matter.
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