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New limit on time-reversal violation in beta decay

H P Mumm1, T E Chupp, R L Cooper

  • 1National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA.

Physical Review Letters
|October 11, 2011
PubMed
Summary

We precisely measured a key value in neutron beta decay, finding no evidence of time-reversal violation. This result strongly constrains new physics beyond the Standard Model.

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