On the missing-momentum dependence of the colour-transparency effects in (e,e'p) scattering

We explore the missing-momentum dependence of the colour transparency (CT) effects in quasielastic (e, e'p) scattering. We develop the coupled-channel multiple-scattering theory (CCMST) description of final-state interaction including both the coherent and incoherent rescatterings of the ejectile state. We demonstrate that the contribution of the off-diagonal incoherent rescattering does not vanish at low Q(2), which is a novel correction to the conventional Glauber theory evaluation of nuclear transparency. We comment on the nontrivial impact of this correction on the onset of CT. The sensitivity of the onset of CT to the 3q-nucleon reggeon amplitudes is discussed for the first time. We present numerical results for nuclear transparency as a function of the missing momentum for exclusive (e, e'p) reaction in the kinematical region of Q(2) less than or similar to 40 GeV2 and p(m) less than or similar to 250 MeV/c. Our evaluations show that at Q(2) similar to 10 CT effects are substantial only in antiparallel kinematics at p(m,z) similar to -250 MeV/c. The effect is enhanced on light nuclei and could be observed in a high precision experiment.