NPDGamma experiment at the SNS completed 2 years of hydrogen-target data collection

Recently the NPDGamma experiment at the SNS completed 2 years of hydrogen-target data collection. Results indicate that:

• Systematic uncertainties are small
• Data analysis is well advanced — Preliminary statistical precision is better than 10 parts per billion.
• The experiment will be complete following 60 days of measurement of parity violation in aluminum for the 20% target-window background subtraction.
• These data will determine the iso-vector component of the hadronic weak interaction with no theoretical uncertainty from nuclear structure.

For more information contact David Bowman, [email protected]