Nuclear C(e, e′p) Transparencies in a Relativistic Glauber Model

Abstract

In light of the recent Jefferson Laboratory (JLab) data for the nuclear 12C(e,e′p) transparencies, calculations, obtained in a relativistic multiple scattering Glauber approximation, are discussed. The shell-separated 12C transparencies are shown and it is concluded that the p-shell nucleons are 75% more transparent than the s-shell ones. The presented comparisons between the calculations made here and the current 12C(e,e′p) data show no clear indication for the onset of color transparency when implemented within the color diffusion model with standard parameters.

Searching for an Enhanced Signal of the Onset of Color Transparency in Baryons with D(e,e′p)n Scattering

“…The flat Q 2 -dependence of the recent Hall C CT measurement [9] is in agreement with standard Glauber calculations not including any CT effects. Calculations including CT effects using the color diffusion model [8,35] with standard parameters (∆M 2 = 1 GeV 2 ) overshoot the data by a large amount for the highest Q 2 values [9,51]. It is possible, however, to modify the parameters in the color-diffusion model to see which values would still be compatible with the measured Hall C data.…”

“…In order to map the quantum diffusion model parameter values that would still agree with the recent Hall C data, we perform calculations within the relativistic multiple scattering Glauber approximation (RMSGA) [51][52][53] with modified parameters: we take modified ∆M 2 values, which results in a modified coherence length, and introduce a new modification parameter, α, such that…”