Q2 DEPENDENCE OF NUCLEAR TRANSPARENCY FOR INCOHERENT r0 ELECTROPRODUCTION

摘要

Measurements of exclusive incoherent electroproduction of face="symbol">r0(770)meson from 2H, 12C, and 63Cu targets up to Q2= 4 GeV 2 are proposed using the CLAS detector at Jefferson Lab. The objectiveof these measurements is to determine the Q2 dependence of the nucleartransparency ratio for the two nuclear targets: 12C and 63Cu atfixed coherence length of quark-antiquark fluctuations of the virtual photon. A sizeablerise of the nuclear transparency is predicted and can be measured in this experiment. Arelatively large increase of the nuclear transparency can be considered as a signature ofthe onset of color transparency.