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Title: Measurement of spin effects in p/sub up-arrow/+p/sub up-arrow/. -->. p+p at 18. 5 GeVc

Journal Article · · Phys. Rev. Lett.; (United States)

We measured the analyzing power A and the spin-spin correlation parameter A/sub n//sub n/ in medium-P/sub perpendicular//sup 2/ proton-proton elastic scattering, using a polarized-proton target and the 18.5-GeVc Brookhaven Alternating-Gradient Synchrotron polarized-proton beam. We found sharp dips in both A and A/sub n//sub n/, which occur at different P/sub perpendicular//sup 2/ values. The unexpected sharp structure in the spin-spin force occurs near P/sub perpendicular//sup 2/ = 2.3 (GeVc)/sup 2/ where the elastic cross section has no apparent structure.

Research Organization:
Randall Laboratory of Physics, The University of Michigan, Ann Arbor, Michigan 48109
OSTI ID:
5160593
Journal Information:
Phys. Rev. Lett.; (United States), Vol. 60:23
Country of Publication:
United States
Language:
English