A model for nuclear transparency in high-energy quasi-elastic scatterings

The nuclear transparency is studied in a quantum-mechanical model for the internal structure of the proton. Only the breathing mode is considered for the internal motion and is described by the dynamical variation of the size parameter, b. The propagation of the dynamical proton in nuclear matter is calculated with its attenuation rate proportional to b2. The internal dynamics is found to enhance the transparency and gives rise to its monotonically increasing energy dependence. ((orig.))