Evidence for the Onset of Color Transparency in ρ0 Electroproduction off Nuclei

Authors

L. El Fassi
L. Zana
H. Hafidi
M. Holtrop
B. Mustapha
W. K. Brooks
H. Hakobyan
Z. Zheng
K. P. Adhikari
D. Adikaram
M. J. Amaryan, Old Dominion UniversityFollow
H. Baghdasaryan, Old Dominion University
S. Bültmann, Old Dominion UniversityFollow
G. E. Dodge, Old Dominion UniversityFollow
C. E. Hyde, Old Dominion UniversityFollow
A. Klein, Old Dominion University
S. E. Kuhn, Old Dominion UniversityFollow
M. Mayer, Old Dominion University
H. Seraydaryan, Old Dominion University
L. B. Weinstein, Old Dominion UniversityFollow

Document Type

Article

Publication Date

2012

DOI

10.1016/j.physletb.2012.05.019

Publication Title

Physics Letters B

Volume

712

Issue

4-5

Pages

326-330

Abstract

We have measured the nuclear transparency of the incoherent diffractive A( e , e ′ ρ⁰ ) process in ¹²C and ⁵⁶Fe targets relative to ²H using a 5 GeV electron beam. The nuclear transparency, the ratio of the produced ρ⁰ ʼs on a nucleus relative to deuterium, which is sensitive to ρA interaction, was studied as function of the coherence length (lc), a lifetime of the hadronic fluctuation of the virtual photon, and the four-momentum transfer squared (Q²). While the transparency for both ¹²C and ⁵⁶Fe showed no lc dependence, a significant Q² dependence was measured, which is consistent with calculations that included the color transparency effects.

Comments

Open access under CC BY license.

Original Publication Citation

El Fassi, L., Zana, L., Hafidi, K., Holtrop, M., Mustapha, B., Brooks, W. K., . . . Zhao, Z. W. (2012). Evidence for the onset of color transparency in ρ⁰ electroproduction off nuclei. Physics Letters B, 712(4–5), 326-330. doi:https://doi.org/10.1016/j.physletb.2012.05.019

ORCID

0000-0002-5680-1814 (Bueltmann), 0000-0003-1582-2376 (Dodge), 0000-0001-7282-8120 (Hyde), 0000-0003-2243-6836 (Kuhn), 0000-0001-5416-2900 (Weinstein)

Repository Citation

El Fassi, L.; Zana, L.; Hafidi, H.; Holtrop, M.; Mustapha, B.; Brooks, W. K.; Hakobyan, H.; Zheng, Z.; Adhikari, K. P.; Adikaram, D.; Amaryan, M. J.; Baghdasaryan, H.; Bültmann, S.; Dodge, G. E.; Hyde, C. E.; Klein, A.; Kuhn, S. E.; Mayer, M.; Seraydaryan, H.; and Weinstein, L. B., "Evidence for the Onset of Color Transparency in ρ0 Electroproduction off Nuclei" (2012). Physics Faculty Publications. 100.
https://digitalcommons.odu.edu/physics_fac_pubs/100