Upper limit onTnonconserving tensor couplings in nuclear beta decay

1 June 1985

journal article
research article
Published by American Physical Society (APS) in Physical Review C

Vol. 31 (6) , 2218-2221
https://doi.org/10.1103/physrevc.31.2218

Abstract

Upper limits are derived for the first time on charged, tensor coupling constants that violate time reversal invariance (T). Various previous measurements of beta polarization from nuclear decays are analyzed. The best limit is Im(

C_{T}

C_{A}^{’ *}

C_{T}^{’}

C_{A}^{*}

) =-0.063±0.052, a factor of 5 more precise than the present limit on analogously-defined, scalar T-violating terms. Finally, the relation of tensor couplings to searches for scalar couplings is discussed. No T violations are inferred.

Keywords

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