Parity nonconservation in proton-nucleus scattering at 6 GeV/c
- 1. Department of Physics, Ohio State University, Columbus, Ohio 43210
Description
A parity-nonconserving asymmetry in the total cross section for 6-GeV/c polarized protons on a water target has been measured. The experiment used two independent detector systems to measure the helicity dependence of the transmission through the target. Special attention was paid to possible sources of systematic errors. The result is A/sub L/ = (2.65 +- 0.60 +- 0.36) x 10 -6 where A/sub L/ = (sigma/sub +/-sigma/sub -/)/(sigma/sub +/+sigma -) is the fractional difference of the total cross sections for positive- and negative-helicity protons on an unpolarized target. The first error is statistical and the second is an estimate of systematic uncertainties. This result is much larger than predictions based on meson-exchange calculations but consistent with a recent QCD calculation
Additional details
Publishing Information
- Journal Title
- Phys. Rev., D
- Journal Volume
- 30
- Journal Issue
- 5
- Series
- Phys. Rev., D.
- Journal Page Range
- 860-871
- ISSN
- 0556-2821
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 16032986
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Resource subtype / Literary indicator
- Numerical Data
- Descriptors DEI
- ASYMMETRY; EXPERIMENTAL DATA; GEV RANGE 01-10; HELICITY; P INVARIANCE; POLARIZED BEAMS; PROTON REACTIONS; QUANTUM CHROMODYNAMICS; STATISTICAL MECHANICS; TOTAL CROSS SECTIONS; WATER
- Descriptors DEC
- BARYON REACTIONS; BEAMS; CROSS SECTIONS; DATA; ENERGY RANGE; FIELD THEORIES; GEV RANGE; HADRON REACTIONS; HYDROGEN COMPOUNDS; INFORMATION; INVARIANCE PRINCIPLES; MECHANICS; NUCLEAR REACTIONS; NUCLEON REACTIONS; NUMERICAL DATA; OXYGEN COMPOUNDS; PARTICLE PROPERTIES; QUANTUM FIELD THEORY