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Atomic Physics Seminars
| Special Colloquium
Monday, March 26, 2007
Physics Building, Room 204
Note special time.
[Host: Blaine Norum]
"Parity Violation and the Neutron"
Parity violation, discovered in 1957 in nuclear beta decay, is unique to the
weak interaction. This property makes it possible to isolate weak
contributions from the residual strong force, which dominates hadronic
interactions by 7 orders of magnitude. The NPDGamma experiment is being
carried out at Los Alamos National Laboratory to extract the weak pion-nucleon
coupling by measuring the parity violating asymmetry in radiative
neutron-proton capture with polarized neutrons to an accuarcy of 5x10-9. I
will describe this experiment and give some prelimary results.
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