Energy Dependence of Spin Effects inp↑+p↑→p+p

Autor: A. M. T. Lin, T. S. Bhatia, R. S. Raymond, D. Peaslee, R. R. Raylman, I. Gialas, Kent M. Terwilliger, Thomas Roser, J. R. O'Fallon, L. C. Northcliffe, G. R. Court, M. Simonius, L. G. Ratner, D. G. Crabb, Kevin Brown, P. Cameron, A. D. Krisch, F. Z. Khiari
Rok vydání: 1986
Předmět:
Zdroj: Physical Review Letters. 57:507-510
ISSN: 0031-9007
DOI: 10.1103/physrevlett.57.507
Popis: We measured the analyzing power A and the spin-spin correlation parameter A/sub n//sub n/, in large-P/sub perpendicular//sup 2/ proton-proton elastic scattering, using a polarized-proton target and the polarized-proton beam at the Brookhaven Alternating-Gradient Synchrotron. We also used our polarimeter to measure A at small P/sub perpendicular//sup 2/ at 13 GeV with good precision and found some deviation from the expected 1/P/sub lab/ behavior. At 18.5 GeV/c we found A/sub n//sub n/ = (-2 +- 16)% at P/sub perpendicular//sup 2/ = 4.7 (GeV/c)/sup 2/. Comparison with lower-energy data from the Argonne Zero-Gradient Synchrotron shows a sharp and surprising energy dependence for A/sub n//sub n/ at large P/sub perpendicular//sup 2/.
Databáze: OpenAIRE