Time reversal in polarized neutron decay: The emiT experiment

G. L. Jones, J. M. Adams, J. M. Anaya, T. J. Bowles, T. E. Chupp, K. P. Coulter, M. S. Dewey, S. J. Freedman, B. K. Fujikawa, A. Garcia, G. L. Greene, S. R. Hwang, L. J. Lising, H. P. Mumm, J. S. Nico, R. G.H. Robertson, T. D. Steiger, W. A. Teasdale, A. K. Thompson, E. G. WassermanF. E. Wietfeldt, J. F. Wilkerson

Research output: Contribution to journalConference articlepeer-review

3 Scopus citations


The standard electro-weak model predicts negligible violation of time-reversal invariance in light quark processes. We report on an experimental test of time-reversal invariance in the beta decay of polarized neutrons as a search for physics beyond the standard model. The emiT collaboration has measured the time-reversal-violating triple-correlation in neutron beta decay between the neutron spin, electron momentum, and neutrino momentum often referred to as the D coefficient. The first run of the experiment produced 14 million events which are currently being analyzed. However, a second run with improved detectors should provide greater statistical precision and reduced systematic uncertainties.

Original languageEnglish (US)
Pages (from-to)648-652
Number of pages5
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Issue number3
StatePublished - Jun 2000
Externally publishedYes
EventThe International Workshop on 'Particle Physics with Slow Neutrons' - Grenoble, France
Duration: Oct 22 1998Oct 24 1998

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Instrumentation


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