Abstract
The highest-energy measurement of and the first ever measurement of , the differences between proton-proton and antiproton-proton total cross sections for pure longitudinal spin states, are described. Data were taken using 200-GeV/ polarized beams incident on a polarized-proton target. The results are measured to be μb and μb. Many tests of systematic effects were investigated and are described, and a comparison to theoretical predictions is also given. Measurements of parity nonconservation at GeV/ in proton scattering and the first ever of antiproton scattering have also been derived from these data. The values are consistent with zero at the level.
- Received 3 May 1996
DOI:https://doi.org/10.1103/PhysRevD.55.1159
©1997 American Physical Society