Weak Interaction Studies with 6He
A. Knecht, Z. T. Alexander, Y. Bagdasarova, T. M. Cope, B. G., Delbridge, X. Flechard, A. Garcia, R. Hong, E. Lienard, P. Mueller, O., Naviliat-Cuncic, A. S. C. Palmer, R. G. H. Robertson, D. W. Storm, H. E., Swanson, S. Utsuno, F. Wauters, W. Williams, C. Wrede, D. W. Zumwalt
TL;DR
This paper reports the development of a high-intensity 6He source and high-precision measurements of its decay properties to investigate weak interactions and search for physics beyond the Standard Model.
Contribution
The authors built a high-intensity 6He source and performed precise half-life measurements, enabling new tests of the weak interaction and potential new physics in beta decay.
Findings
High-precision 6He half-life measurement completed
Development of a 10^10 atoms/s 6He source
Preparation for beta-neutrino angular correlation measurement
Abstract
The 6He nucleus is an ideal candidate to study the weak interaction. To this end we have built a high-intensity source of 6He delivering ~10^10 atoms/s to experiments. Taking full advantage of that available intensity we have performed a high-precision measurement of the 6He half-life that directly probes the axial part of the nuclear Hamiltonian. Currently, we are preparing a measurement of the beta-neutrino angular correlation in 6He beta decay that will allow to search for new physics beyond the Standard Model in the form of tensor currents.
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