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Large-P/sub perpendicular//sup 2/ spin effects in p+p. -->. p+p

Journal Article · · Phys. Rev. Lett.; (United States)
The analyzing power A in 28-GeV/c proton-proton elastic scattering was measured with use of a polarized proton target and a high-intensity unpolarized proton beam at the Brookhaven National Laboratory alternating gradient synchrotron. The P/sub perpendicular//sup 2/ range of 2.85 to 5.95 (GeV/c)/sup 2/ was covered with good precision. A small dip of about -3.5% was found near P/sub perpendicular//sup 2/ = 3.5 (GeV/c)/sup 2/ where a 24-GeV/c CERN experiment had reported a deep dip of about -16% with large errors. In the previously unexplored large-P/sub perpendicular//sup 2/ region near 6 (GeV/c)/sup 2/ these new large error points suggest the A may be rising.
Research Organization:
Department of Physics and Astronomy, University of Maryland, College Park, Maryland 20742
OSTI ID:
5092167
Journal Information:
Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 51:26; ISSN PRLTA
Country of Publication:
United States
Language:
English