Post on 20-Jan-2016
description
CLAS E02-110 experiment: Evidence for the onset of Color Transparency (CT) in ρ0
electroproduction off nuclei
L. El Fassi, K. Hafidi et al., Phys.Lett. B 712, 326 (2012).
Diffractive electroproduction of the vector meson ρ0 off nuclei offers a tool of choice to study CT
The small size pre-hadron ρ0 is directly produced from the virtual photon since both are vector particles
The highest the space-time resolution (Q2) of the virtual photon is, the smallest is the size of the produced pre-hadron
We observe that the nuclear medium becomes more transparent to the produced ρ0 when Q2 increases in agreement with CT effects