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Evidence for the onset of color transparency in rho(0) electroproduction off nuclei

El Fassi, L.
; 
Hafidi, K.
; 
Mustapha, B.
; 
Griffioen, K. A.
; 
Jawalkar, S. S.
; 
Zhao, B.
Abstract
We have measured the nuclear transparency of the incoherent diffractive A(e,e' rho(0)) process in C-12 and Fe-56 targets relative to H-2 using a 5 GeV electron beam. The nuclear transparency, the ratio of the produced rho(0,)s on a nucleus relative to deuterium, which is sensitive to rho A interaction, was studied as function of the coherence length (l(c)), a lifetime of the hadronic fluctuation of the virtual photon, and the four-momentum transfer squared (Q(2)). While the transparency for both C-12 and Fe-56 showed no lc dependence, a significant Q(2) dependence was measured, which is consistent with calculations that included the color transparency effects. (C) 2012 Elsevier B.V. All rights reserved.
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2012-01-01
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Physics
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Physics
DOI
https://doi.org/10.1016/j.physletb.2012.05.019
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https://scholarworks.wm.edu/handle/internal/697
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