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L . El Fassi , K. Hafidi et al ., Phys.Lett . B 712 , 326 (2012) .

CLAS E02-110 experiment: Evidence for the onset of Color Transparency (CT) in ρ 0 electroproduction off nuclei. Diffractive electroproduction of the vector meson ρ 0 o ff nuclei offers a tool of choice to study CT The small size pre-hadron ρ 0 is directly produced from

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L . El Fassi , K. Hafidi et al ., Phys.Lett . B 712 , 326 (2012) .

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  1. CLAS E02-110 experiment: Evidence for the onset of Color Transparency (CT) in ρ0 electroproduction off nuclei • 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 L. El Fassi, K. Hafidiet al., Phys.Lett. B 712, 326 (2012).

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