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<font color="#000099"><b><font color="#3333ff">Physics Seminar<br>
Thursday, January 21, 2010<br>
11:00AM<br>
CEBAF Center F113<br>
Cookies & Coffee at 10:45AM<br>
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<b>"Probing the Hadronic Weak Interaction Through a Measurement of
Parity Violation in Polarized Cold Neutron Capture"
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Nadia Fomin for the NPDGamma Collaboration
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University of Tennessee</b></font>
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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 finally allow the result to be compared with theoretical
predictions.
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