IMPROVED LIMITS ON TIME-REVERSAL-VIOLATING, TENSOR WEAK COUPLINGS

Improved upper limits are derived on the possible existence of the T-v iolating (time-reversal) part of the tensor weak coupling constants, C (T) and C(T)'. The previous measurements of the electron-neutrino dire ctional correlation in the nuclear beta decay of He-6 are analyzed for sensitivity to T-violating couplings. The results of the analysis are presented in the context of previous beta decay limits on T-violating tensor couplings and compared to somewhat similar limits from precisi on electric dipole moment experiments.