The treatment of the final state is as in the previous papers: optical potential single particle waves. The initial state is instead obtained by using the G-matrix and shell model treatment of Geurts et al PRC 53 (1996) 2207. In order to implement this model in the Giusti and Pacati formalism the ground state wave function is described as linear combination of two-nucleon center of mass wave function (taken as harmonic oscillator) times the relative motion wave function (see eq. 13 of the paper). The relative wave function is calculated by adding to the harmonic oscillator relative wave a defect function (eq. 15).
This treatment of the initial state allows for an analysis of the emitted partial waves, and in fig. 2 the cross section for various A-2 nuclear final states is analyzed in terms of partial waves.
Fig. 2 and 3 show the role of the delta. Irrrelevant for 0+, it is the main contribution for 1+ and it is important for 2+.
The sensitivity to different SRC is studied in fig.7 and the various structure functions are shown in fig. 9.