Final state interactions in $^{4}$He(e,e$^\prime$p)$^{3}$H at large proton energy

Abstract

At large proton energy, the final state interactions of the knocked out nucleon in $\eep$ reactions off nuclear targets can be described within the eikonal approximation, treating the spectator particles as a collection of fixed scattering centers. We use a generalization of this approach, suitable to take into account the possible occurrence of color transparency, to carry out an accurate calculation of the missing momentum distribution of the process $^{4}He(e,e^\prime p)^{3}H$. The pattern of final state interaction effect is analyzed for different kinematical setups in the domain corresponding to $2 \le Q^2 \le 20$ (GeV/c)$^2$.