Nuclear transparency with the γn → π-p process in 4He

D. Dutta, F. Xiong, L. Y. Zhu, J. Arrington, T. Averett, E. Beise, J. Calarco, T. Chang, J. P. Chen, E. Chudakov, M. Coman, B. Clasie, C. Crawford, Sonja Dieterich, F. Dohrmann, K. Fissum, S. Frullani, H. Gao, R. Gilman, C. GlashausserJ. Gomez, K. Hafidi, J. O. Hansen, D. W. Higinbotham, R. J. Holt, C. W. De Jager, X. Jiang, E. Kinney, K. Kramer, G. Kumbartzki, J. LeRose, N. Liyanage, D. Mack, P. Markowitz, K. McCormick, Z. E. Meziani, R. Michaels, J. Mitchell, S. Nanda, D. Potterveld, R. Ransome, P. E. Reimer, B. Reitz, A. Saha, E. C. Schulte, J. Seely, S. Širca, S. Strauch, V. Sulkosky, B. Vlahovic, L. B. Weinstein, K. Wijesooriya, C. F. Williamson, B. Wojtsekhowski, H. Xiang, W. Xu, J. Zeng, X. Zheng

Research output: Contribution to journalArticle

24 Scopus citations

Abstract

We have measured the nuclear transparency of the fundamental process γn → π-p in 4He. These measurements were performed at Jefferson Lab in the photon energy range of 1.6-4.5 GeV and at θcmπ = 70° and 90°. These measurements are the first of their kind in the study of nuclear transparency in photoreactions. They also provide a benchmark test of Glauber calculations based on traditional models of nuclear physics. The transparency results suggest deviations from the traditional nuclear physics picture. The momentum transfer dependence of the measured nuclear transparency is consistent with Glauber calculations that include the quantum chromodynamics phenomenon of color transparency.

Original languageEnglish (US)
Pages (from-to)210011-210015
Number of pages5
JournalPhysical Review C - Nuclear Physics
Volume68
Issue number2
StatePublished - Aug 2003
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Nuclear and High Energy Physics

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    Dutta, D., Xiong, F., Zhu, L. Y., Arrington, J., Averett, T., Beise, E., Calarco, J., Chang, T., Chen, J. P., Chudakov, E., Coman, M., Clasie, B., Crawford, C., Dieterich, S., Dohrmann, F., Fissum, K., Frullani, S., Gao, H., Gilman, R., ... Zheng, X. (2003). Nuclear transparency with the γn → π-p process in 4He. Physical Review C - Nuclear Physics, 68(2), 210011-210015.