Effects of two-particle-two-hole correlations on the longitudinal quasielastic response in 12C

• DOI: 10.1016/0370-2693(87)91001-x
• Publication Date: 2002-11-12T12:23:30Z
• Authors: S. Drożdż; G. Co'; J. Wambach; J. Speth
• Keywords: Momentum (technical analysis); Momentum transfer; Particle (ecology); Quasielastic scattering; Quasielastic neutron scattering

Abstract In an extended RPA theory which includes 1p1h as well as 2p2h excitations we have calculated the quasielastic charge response in 12C for momentum transfers of 200, 250 and 300 MeV c . Using a realistic G-matrix interaction in local density approximation we find reasonable agreement with the (e, e) data for 200 and 250 MeV c while at 300 MeV c , as a result of shell truncations, the agreement starts to degrade.