Improved Limit on Tensor Currents in the Weak Interaction from Li 8 β Decay

Authors

M. T. Burkey, Lawrence Livermore National Laboratory
G. Savard, The University of Chicago
A. T. Gallant, Lawrence Livermore National Laboratory
N. D. Scielzo, Lawrence Livermore National Laboratory
J. A. Clark, Argonne National Laboratory
T. Y. Hirsh, Argonne National Laboratory
L. Varriano, The University of Chicago
G. H. Sargsyan, Louisiana State University
K. D. Launey, Louisiana State University
M. Brodeur, University of Notre Dame
D. P. Burdette, Argonne National Laboratory
E. Heckmaier, Lawrence Livermore National Laboratory
K. Joerres, Louisiana State University
J. W. Klimes, Argonne National Laboratory
K. Kolos, Lawrence Livermore National Laboratory
A. Laminack, Louisiana State University
K. G. Leach, Colorado School of Mines
A. F. Levand, Argonne National Laboratory
B. Longfellow, Lawrence Livermore National Laboratory
B. Maaß, Argonne National Laboratory
S. T. Marley, Louisiana State University
G. E. Morgan, Louisiana State University
P. Mueller, Argonne National Laboratory
R. Orford, Argonne National Laboratory
S. W. Padgett, Lawrence Livermore National Laboratory
A. Pérez Galván, Argonne National Laboratory
J. R. Pierce, The University of Chicago
D. Ray, Argonne National Laboratory
R. Segel, Northwestern University
K. Siegl, University of Notre Dame
K. S. Sharma, University of Manitoba
B. S. Wang, Lawrence Livermore National Laboratory

Document Type

Article

Publication Date

5-20-2022

Abstract

The electroweak interaction in the standard model is described by a pure vector-axial-vector structure, though any Lorentz-invariant component could contribute. In this Letter, we present the most precise measurement of tensor currents in the low-energy regime by examining the β-ν¯ correlation of trapped Li8 ions with the Beta-decay Paul Trap. We find aβν=-0.3325±0.0013stat±0.0019syst at 1σ for the case of coupling to right-handed neutrinos (CT=-CT′), which is consistent with the standard model prediction.

Publication Source (Journal or Book title)

Physical Review Letters

Recommended Citation

Burkey, M., Savard, G., Gallant, A., Scielzo, N., Clark, J., Hirsh, T., Varriano, L., Sargsyan, G., Launey, K., Brodeur, M., Burdette, D., Heckmaier, E., Joerres, K., Klimes, J., Kolos, K., Laminack, A., Leach, K., Levand, A., Longfellow, B., Maaß, B., Marley, S., Morgan, G., Mueller, P., Orford, R., Padgett, S., Pérez Galván, A., Pierce, J., Ray, D., Segel, R., Siegl, K., Sharma, K., & Wang, B. (2022). Improved Limit on Tensor Currents in the Weak Interaction from Li 8 β Decay. Physical Review Letters, 128 (20) https://doi.org/10.1103/PhysRevLett.128.202502