1China Center of Advanced Science and Technology (World Laboratory), P. O. Box 8730, Beijing 100080
2Institute of Nuclear Research, Chinese Academy of Sciences, Shanghai 201800 (mailing address)
3INFN Sezion and Dipartimento di Fisica, 57 Corso Italia, 95129 Catania, Italy
In-Medium Nucleon-Nucleon Cross Section
CAI Yan-huang1,2;SONG Hong-qiu1,2;U. Lombardo3
1China Center of Advanced Science and Technology (World Laboratory), P. O. Box 8730, Beijing 100080
2Institute of Nuclear Research, Chinese Academy of Sciences, Shanghai 201800 (mailing address)
3INFN Sezion and Dipartimento di Fisica, 57 Corso Italia, 95129 Catania, Italy
Abstract： Within the framework of Brueckner-Hartree-Fock method, the in-medium nucleonnucleon (NN) cross section is calculated. We base our investigation on a separable Paris potential for the NN interaction and a continuous choice for the single particle spectrum. It is found that the in-medium cross section is strongly modified by medium effect. In particular, with increasing of nuclear density, the cross sections decrease. This indicates a proper treatment of the density dependence of the in-medium NN cross sections is important.
1996, Vol. 13 
