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)${}^2$.

20 pages, 5 figures. Accepted for publication in Nuclear Physics A