The Role of the Coherence Length in Exclusive Electroproduction of Vector Mesons off Nuclei
J. Huefner, B. Kopeliovich, J. Nemchik
Abstract
The variation of the coherence length lc=2ν/(Q2+mV2) in virtual photoproduction of vector mesons off nuclei as a function of the photon energy ν or virtuality Q2 results in dramatic changes in the values of the nuclear transparency. Color transparency effects can be easily mixed up with the effects of the coherence length in incoherent photoproduction on nuclei.
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