Nuclear Physics Seminars

ics Nuclear
Tuesday, January 26, 2010
3:30 PM
Physics Building, Room 204
Nadia Fomin [Host: Donal Day]
University of Tennessee
"The NPDGamma experiment - Probing the hadronic weak interaction through a measurement of parity violation in polarized cold neutron capture"
ABSTRACT:
The NPDGamma experiment aims to measure the correlation between the neutron spin and the direction of the emitted photon in neutron-proton capture. A parity violating asymmetry from this process can be directly related to the strength of the hadronic weak interaction between nucleons. The first phase of the experiment was completed in 2006 at LANSCE. The methodology will be discussed and preliminary results will be presented. The next run will start in early 2010 at the SNS at ORNL with several improvements, which will be discussed. The upcoming run will yield a measurement with a projected statistical error 1x10 -8 . This will allow the results to be compared meaningfully with theoretical predictions

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