# A-dependence of nuclear transparency in quasielastic A(e,e'p) at high Q^2

## TL;DR

This study investigates how nuclear transparency in quasielastic electron scattering varies with atomic number and momentum transfer, finding no significant increase in transparency at high Q^2, challenging some predictions of Color Transparency.

## Contribution

It provides experimental measurements of nuclear transparency across different nuclei and high momentum transfers, testing predictions of Color Transparency.

## Key findings

- No significant increase in nuclear transparency with Q^2 observed.
- Experimental data contradicts some theoretical predictions of Color Transparency.
- Transparency varies with nuclear size but not with Q^2 at high energies.

## Abstract

The A-dependence of the quasielastic A(e,e'p) reaction has been studied at SLAC with H-2, C, Fe, and Au nuclei at momentum transfers Q^2 = 1, 3, 5, and 6.8 (GeV/c)^2. We extract the nuclear transparency T(A,Q^2), a measure of the average probability that the struck proton escapes from the nucleus A without interaction. Several calculations predict a significant increase in T with momentum transfer, a phenomenon known as Color Transparency. No significant rise within errors is seen for any of the nuclei studied.