Measurement of nuclear transparency for the A(e,e'pi+) reaction.


Journal Article

We have measured the nuclear transparency of the A(e,e'pi+) process in 2H, 12C, 27Al, 63Cu, and 197Au targets. These measurements were performed at the Jefferson Laboratory over a four momentum transfer squared range Q2=1.1 to 4.7 (GeV/c)2. The nuclear transparency was extracted as the super-ratio of (sigmaA/sigmaH) from data to a model of pion-electroproduction from nuclei without pi-N final-state interactions. The Q2 and atomic number dependence of the nuclear transparency both show deviations from traditional nuclear physics expectations and are consistent with calculations that include the quantum chromodynamical phenomenon of color transparency.

Full Text

Duke Authors

Cited Authors

  • Clasie, B; Qian, X; Arrington, J; Asaturyan, R; Benmokhtar, F; Boeglin, W; Bosted, P; Bruell, A; Christy, ME; Chudakov, E; Cosyn, W; Dalton, MM; Daniel, A; Day, D; Dutta, D; El Fassi, L; Ent, R; Fenker, HC; Ferrer, J; Fomin, N; Gao, H; Garrow, K; Gaskell, D; Gray, C; Horn, T; Huber, GM; Jones, MK; Kalantarians, N; Keppel, CE; Kramer, K; Larson, A; Li, Y; Liang, Y; Lung, AF; Malace, S; Markowitz, P; Matsumura, A; Meekins, DG; Mertens, T; Miller, GA; Miyoshi, T; Mkrtchyan, H; Monson, R; Navasardyan, T; Niculescu, G; Niculescu, I; Okayasu, Y; Opper, AK; Perdrisat, C; Punjabi, V; Rauf, AW; Rodriquez, VM; Rohe, D; Ryckebusch, J; Seely, J; Segbefia, E; Smith, GR; Strikman, M; Sumihama, M; Tadevosyan, V; Tang, L; Tvaskis, V; Villano, A; Vulcan, WF; Wesselmann, FR; Wood, SA; Yuan, L; Zheng, XC

Published Date

  • December 14, 2007

Published In

Volume / Issue

  • 99 / 24

Start / End Page

  • 242502 -

PubMed ID

  • 18233444

Pubmed Central ID

  • 18233444

Electronic International Standard Serial Number (EISSN)

  • 1079-7114

International Standard Serial Number (ISSN)

  • 0031-9007

Digital Object Identifier (DOI)

  • 10.1103/physrevlett.99.242502


  • eng