The limits on time-reversal invariant tensor-type weak currents from nuclear and neutron β decays are evaluated including most recent experimental data. We find that −0.14×10−2<(CT+CT′)/CA<1.4×10−2 and −0.16<(CT−CT′)/CA<0.16 (90% C.L.), while for the case CT=CT′ the limits are ∣CT/CA∣<3.7×10−3. These limits are shown to be more stringent than those from recent measurements of the radiative pion decay. In addition, the sensitivity of future 10−3-level correlation measurements is investigated.
@article{arxiv.1306.2608,
title = {Limits on tensor type weak currents from nuclear and neutron $\beta$~decays},
author = {Frederik Wauters and Alejandro García and Ran Hong},
journal= {arXiv preprint arXiv:1306.2608},
year = {2016}
}