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|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|
|Pages:||pp. 1 - 5|
|Keywords:||baryon asymmetry, neutron decay, symmetries, time-reversal|
|Research Areas:||Neutron Physics|