Time reversal in polarized neutron decay: The emiT experiment
Type of Work
Nuclear Instruments & Methods in Physics Research Section A-Accelerators Spectrometers Detectors and Associated Equipment
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. (C) 2000 Elsevier Science B.V. All rights reserved.
Jones, Gordon L.; Adams, J. M.; Anaya, J. M.; Bowles, T. J.; Chupp, T. E.; Coulter, K. P.; Dewey, M. S.; Freedman, S. J.; Fujikawa, B. K.; Garcia, A.; Greene, G. L.; Hwang, S.-R.; Lising, L. J.; Mumm, H. P.; Nico, J. S.; Robertson, R. G. H.; Steiger, T. D.; Teasdale, W. A.; Thompson, A. K.; Wasserman, E. G.; Wietfeldt, F. E.; and Wilkerson, J. F., "Time reversal in polarized neutron decay: The emiT experiment" (2000). Hamilton Digital Commons.
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