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Asymmetries in inclusive proton-nucleon scattering at 11. 75 GeV/c

Journal Article · · Phys. Rev., D; (United States)
We have measured the left-right asymmetry for the inclusive production of ..pi../sup + -/, K/sup + -/, and protons in proton-proton and proton-deuteron collisions at 11.75 GeV/c. The measurements, utilizing the polarized proton beam at the Argonne zero-gradient synchrotron, cover a wide range of kinematic variables (u between 0.6 and - 1.5 (GeV/c)/sup 2/ and x between 0.1 and 0.9 for meson production, t between - 0.2 and - 2.0 (GeV/c)/sup 2/ and x between - 0.25 and 0.75 for proton production). There is considerable angular structure in the pion-production data but not in the kaon or proton processes. Proton production alone is clearly sensitive to the isotopic spin of the target particle. A simple phenomenological model of baryon-exchange dominance successfully relates the inclusive pion asymmetries to the asymmetries in backward pion-nucleon elastic scattering. A triple-Regge model for the inclusive proton asymmetries is also discussed.
Research Organization:
Department of Physics and T. W. Bonner Nuclear Laboratory, Rice University, Houston, Texas 77005
OSTI ID:
6507055
Journal Information:
Phys. Rev., D; (United States), Journal Name: Phys. Rev., D; (United States) Vol. 18:11; ISSN PRVDA
Country of Publication:
United States
Language:
English