Analyzing power measurement of pp elastic scattering in the Coulomb-nuclear interference region with the 200-GeV/c polarized-proton beam at Fermilab

N. Akchurin, J. Langland, Y. Onel, B. E. Bonner, M. D. Corcoran, J. Cranshaw, F. Nessi-Tedaldi, M. Nessi, C. Nguyen, J. B. Roberts, J. Skeens, J. L. White, A. Bravar, R. Giacomich, A. Penzo, P. Schiavon, A. Zanetti, J. Bystricky, F. Lehar, A. De LesquenL. Van Rossum, J. D. Cossairt, A. L. Read, A. A. Derevschikov, Yu A. Matulenko, A. P. Meschanin, S. B. Nurushev, D. I. Patalakha, V. L. Rykov, V. L. Solovyanov, A. N. Vasiliev, D. P. Grosnick, D. A. Hill, M. Laghai, D. Lopiano, Y. Ohashi, T. Shima, H. Spinka, R. W. Stanek, D. G. Underwood, A. Yokosawa, H. Funahashi, Y. Goto, K. Imai, Y. Itow, S. Makino, A. Masaike, K. Miyake, T. Nagamine, N. Saito, S. Yamashita, K. Iwatani, K. Kuroda, A. Michalowicz, F. C. Luehring, D. H. Miller, T. Maki, G. Pauletta, G. F. Rappazzo, G. Salvato, R. Takashima, F. Takeutchi

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41 Scopus citations

Abstract

The analyzing power AN of proton-proton elastic scattering in the Coulomb-nuclear interference region has been measured using the 200-GeV/c Fermilab polarized proton beam. A theoretically predicted interference between the hadronic non-spin-flip amplitude and the electromagnetic spin-flip amplitude is shown for the first time to be present at high energies in the region of 1.5 × 10-3 to 5.0 × 10-2 (GeV/c)2 four-momentum transfer squared, and our results are analyzed in connection with theoretical calculations. In addition, the role of possible contributions of the hadronic spin-flip amplitude is discussed.

Original languageEnglish
Pages (from-to)3026-3036
Number of pages11
JournalPhysical Review D
Volume48
Issue number7
DOIs
StatePublished - 1993

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