  Color transparency occurs if a small-sized wave packet, formed in a high
momentum transfer process, escapes the nucleus before expanding. The time
required for the expansion depends on the masses of the baryonic components of
the wave packet. Measured proton diffractive dissociation and electron deep
inelastic scattering cross sections are used to examine and severely constrain
the relevant masses. These constraints allow significant color transparency
effects to occur at experimentally accessible momentum transfers.
