Measurement of Analyzing Power for Proton-Carbon Elastic Scattering in the Coulomb-Nuclear Interference Region with a 22-GeV/c Polarized Proton Beam
J. Tojo, I. Alekseev, M. Bai, B. Bassalleck, G. Bunce, A. Deshpande, J. Doskow, S. Eilerts, D. E. Fields, Y. Goto, H. Huang, V. Hughes, K. Imai, M. Ishihara, V. Kanavets, K. Kurita, K. Kwiatkowski, B. Lewis, W. Lozowski, Y. Makdisi, H. -O. Meyer, B. V. Morozov, M. Nakamura, B. Przewoski, T. Rinckel, T. Roser, A. Rusek, N. Saito, B. Smith, D. Svirida, M. Syphers, A. Taketani, T. L. Thomas, D. Underwood, D. Wolfe, K. Yamamoto, L. Zhu
Abstract
The analyzing power for proton-carbon elastic scattering in the coulomb-nuclear interference region of momentum transfer, 9.0×10-3<-t<4.1×10-2 (GeV/c)2, was measured with a 21.7 GeV/c polarized proton beam at the Alternating Gradient Synchrotron of Brookhaven National Laboratory. The ratio of hadronic spin-flip to non-flip amplitude, r5, was obtained from the analyzing power to be Re r5=0.088 0.058 and Im r5=-0.161 0.226.
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