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

Authors

L. El Fassi
K. Hafidi
B. Mustapha
K. A. Griffioen, William & MaryFollow
S. S. Jawalkar, William & Mary
B. Zhao, William & Mary

Document Type

Article

Department/Program

Physics

Journal Title

Physics Letters B

Pub Date

2012

Volume

712

Issue

5-Apr

First Page

326

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.

Recommended Citation

El Fassi, L.; Hafidi, K.; Mustapha, B.; Griffioen, K. A.; Jawalkar, S. S.; and Zhao, B., Evidence for the onset of color transparency in rho(0) electroproduction off nuclei (2012). Physics Letters B, 712(5-Apr), 326-330.
10.1016/j.physletb.2012.05.019

DOI

10.1016/j.physletb.2012.05.019