Effects of GroundState Correlations on High Energy Scattering off Nuclei the Case of the T.pdf

Effects of Ground-State Correlations on High Energy Scattering off Nuclei: the Case of the Total Neutron-Nucleus Cross Section M. Alvioli, C. Ciofi degli Atti, I. Marchino, and V. Palli Department of Physics, University of Perugia and Istituto Nazionale di Fisica Nucleare, Sezione di Perugia, Via A. Pascoli, I-06123, Italy H. Morita Sapporo Gakuin University, Bunkyo-dai 11, Ebetsu 069, Hokkaido, Japan 8 (Dated: July 5, 2008) 0 With the aim at quantitatively investigating the longstanding problem concerning the effect of 0 short range nucleon-nucleon correlations on scattering processes at high energies, the total neutron- 2 nucleus cross section is calculated within a parameter-free approach which, for the first time, takes l into account, simultaneously, central, spin, isospin and tensor nucleon-nucleon (NN) correlations, u and Glauber elastic and Gribov inelastic shadowing corrections. Nuclei ranging from 4He to 208P b J and incident neutron momenta in the range 3 GeV/c - 300 GeV/c are considered; the commonly 5 used approach which approximates the square of the nuclear wave function by a product of one-body densities is carefully analyzed, showing that NN correlations can play a non-negligible role in high ] h energy scattering off nuclei t - l c Nowadays interpretation of high precision all terms but the first one of the exact expansion