Cross-section measurement of charged-pion photoproduction from hydrogen and deuterium

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, D. Dutta, K. Fissum, S. Frullani, H. Gao, R. Gilman, C. Glashausser, J. GomezK. 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, D. Meekins, 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, F. Xiong, W. Xu, J. Zeng, X. Zheng

Research output: Contribution to journalArticlepeer-review

46 Scopus citations


The differential cross section dσ/dt for the photoproduction processes of γn→π-p and γp→π+n at θc.m.=90° with photon energies from 1.1 to 5.5 GeV was measured. The data with Eγ≳3.3GeV exhibited a global scaling behavior in both processes, consistent with the constituent counting rule. Furthermore, the scaled cross section data showed an enhancement at a center-of-mass energy near 2.2 GeV and the exact nature of such a structure requires further investigation.

Original languageEnglish (US)
JournalPhysical Review Letters
Issue number2
StatePublished - Jul 11 2003
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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