Parity-Violating Interaction Effects I: the Longitudinal Asymmetry in pp Elastic Scattering
J. Carlson, R. Schiavilla, V. R. Brown, B. F. Gibson
Abstract
The proton-proton parity-violating longitudinal asymmetry is calculated in the lab-energy range 0--350 MeV, using a number of different, latest-generation strong-interaction potentials--Argonne V18, Bonn-2000, and Nijmegen-I--in combination with a weak-interaction potential consisting of rho- and omega-meson exchanges--the model known as DDH. The complete scattering problem in the presence of parity-conserving, including Coulomb, and parity-violating potentials is solved in both configuration- and momentum-space. The predicted parity-violating asymmetries are found to be only weakly dependent upon the input strong-interaction potential adopted in the calculation. Values for the rho- and omega-meson weak coupling constants hppρ and hppω are determined by reproducing the measured asymmetries at 13.6 MeV, 45 MeV, and 221 MeV.
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