| Author(s): |
Hans P. Mumm; T E. Chupp; K P. Coulter; R L. Cooper; S J. Freedman; B. K. Fujikawa; A. Garcia; G L. Jones; Jeffrey S. Nico; Alan K. Thompson; C A. Trull; J. F. Wilkerson; F. E. Wiefeldt; |
| Title: |
A New Limit on Time-Reversal Violation in Beta Decay |
| Published: |
September 02, 2012 |
| Abstract: |
We report the results of an improved determination of the triple correlation DP • (p_e × 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)) × 10e-4. The corresponding phase between g_A and g_V is 180.013 ± 0.028 degrees (68% confidence level). This result represents the most sensitive measurement of D in nuclear beta decay. |
| Citation: |
Physical Review Letters |
| Volume: |
107 |
| Pages: |
pp. 1 - 5 |
| Keywords: |
baryon asymmetry; neutron decay; symmetries, time-reversal |
| Research Areas: |
Neutron Physics |
