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Parity Violation in Proton-Proton Scattering at 221 MeV

A. R. Berdoz·TRIUMF E497 Collaboration
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Abstract

The parity-violating longitudinal analyzing power, Az, has been measured in pp elastic scattering at an incident proton energy of 221 MeV. The result obtained is Az =(0.84 +/- 0.29 (stat.) +/- 0.17 (syst.)) x 10^{-7}. This experiment is unique in that it selects a single parity violating transition amplitude, 3P2-1D2, and consequently directly constrains the weak meson-nucleon coupling constant h^pp_rho When this result is taken together with the existing pp parity violation data, the weak meson-nucleon coupling constants h^pp_rho and h^pp_omega can, for the first time, both be determined.

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A. R. Berdoz, TRIUMF E497 Collaboration. 2001-09-28. Parity Violation in Proton-Proton Scattering at 221 MeV. https://doi.org/10.1103/physrevlett.87.272301

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