New limit on time-reversal violation in beta decay

Authors

H. P. Mumm
T. E. Chupp
R. L. Cooper
K. P. Coulter
S. J. Freedman
B. K. Fujikawa
A. Garcia
Gordon L. Jones, Hamilton CollegeFollow
J. S. Nico
A. K. Thompson
C. A. Trull
J. F. Wilderson
F. E. Wietfeldt

Type of Work

Article

Date

9-1-2011

Journal Title

Physical Review Letters

Journal ISSN

0031-9007

Journal Volume

107

Journal Issue

10

First Page

102301

DOI

10.1103/PhysRevLett.107.102301

Abstract

We report the results of an improved determination of the triple correlation DP . (p(e) x p(v)) that can be used to limit possible time-reversal invariance in the beta decay of polarized neutrons and constrain extensions to the standard model. Our result is D = [-0.96 +/- 1.89(stat) +/- 1.01(sys)] x 10(-4). The corresponding phase between g(A) and g(V) is phi(AV) = 180.013 degrees +/- 0.028 degrees (68% confidence level). This result represents the most sensitive measurement of D in nuclear beta decay.

Citation Information

Mumm, H. P.; Chupp, T. E.; Cooper, R. L.; Coulter, K. P.; Freedman, S. J.; Fujikawa, B. K.; Garcia, A.; Jones, Gordon L.; Nico, J. S.; Thompson, A. K.; Trull, C. A.; Wilderson, J. F.; and Wietfeldt, F. E., "New limit on time-reversal violation in beta decay" (2011). Hamilton Digital Commons.
https://digitalcommons.hamilton.edu/articles/22

Notes

This document is the publisher's version of an article published in:

Physical Review Letters, vol. 107, no. 10 (2011): 102301. doi: 10.1103/PhysRevLett.107.102301.

Hamilton Areas of Study

Physics