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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
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Abstract

The analyzing power for proton-carbon elastic scattering in the coulomb-nuclear interference region of momentum transfer, $9.0\times10^{-3}<-t<4.1\times10^{-2}$ (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, $r_5$, was obtained from the analyzing power to be $\text{Re} r_5=0.088\pm 0.058$ and $\text{Im} r_5=-0.161\pm 0.226$.

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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. 2002-06-22. Measurement of Analyzing Power for Proton-Carbon Elastic Scattering in the Coulomb-Nuclear Interference Region with a 22-GeV/c Polarized Proton Beam. https://doi.org/10.1103/physrevlett.89.052302

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