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

M T Burkey^{1

2

3}, G Savard^{2

3}, A T Gallant¹, N D Scielzo¹, J A Clark^{3

4}, T Y Hirsh^{3

4

5}, L Varriano^{2

3}, G H Sargsyan⁶, K D Launey⁶, M Brodeur⁷, D P Burdette^{3

7}, E Heckmaier^{1

8}, K Joerres⁶, J W Klimes³, K Kolos¹, A Laminack⁶, K G Leach⁹, A F Levand³, B Longfellow¹, B Maaß^{3

10}, S T Marley⁶, G E Morgan⁶, P Mueller³, R Orford^{3

11}, S W Padgett¹, A Pérez Galván³, J R Pierce^{2

3}, D Ray^{3

4}, R Segel¹², K Siegl⁷, K S Sharma⁴, B S Wang¹

Affiliations

¹ Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
² Department of Physics, University of Chicago, Chicago, Illinois 60637, USA.
³ Physics Division, Argonne National Laboratory, Lemont, Illinois 60439, USA.
⁴ Department of Physics and Astronomy, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada.
⁵ Soreq Nuclear Research Center, Yavne 81800, Israel.
⁶ Department of Physics and Astronomy, Louisiana State University, Baton Rouge, Louisiana 70803, USA.
⁷ Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556, USA.
⁸ Department of Physics and Astronomy, University of California Irvine, Irvine, California 92697, USA.
⁹ Department of Physics, Colorado School of Mines, Golden, Colorado, 80401 USA.
¹⁰ Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany.
¹¹ Department of Physics, McGill University, Montréal, Québec H3A 2T8, Canada.
¹² Department of Physics and Astronomy, Northwestern University, Evanston, Illinois 60208, USA.

PMID: 35657880
DOI: 10.1103/PhysRevLett.128.202502

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

M T Burkey et al. Phys Rev Lett. 2022.

. 2022 May 20;128(20):202502.

doi: 10.1103/PhysRevLett.128.202502.

Authors

Affiliations

¹ Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
² Department of Physics, University of Chicago, Chicago, Illinois 60637, USA.
³ Physics Division, Argonne National Laboratory, Lemont, Illinois 60439, USA.
⁴ Department of Physics and Astronomy, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada.
⁵ Soreq Nuclear Research Center, Yavne 81800, Israel.
⁶ Department of Physics and Astronomy, Louisiana State University, Baton Rouge, Louisiana 70803, USA.
⁷ Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556, USA.
⁸ Department of Physics and Astronomy, University of California Irvine, Irvine, California 92697, USA.
⁹ Department of Physics, Colorado School of Mines, Golden, Colorado, 80401 USA.
¹⁰ Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany.
¹¹ Department of Physics, McGill University, Montréal, Québec H3A 2T8, Canada.
¹² Department of Physics and Astronomy, Northwestern University, Evanston, Illinois 60208, USA.

PMID: 35657880
DOI: 10.1103/PhysRevLett.128.202502

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[over ¯] correlation of trapped ^{8}Li ions with the Beta-decay Paul Trap. We find a_{βν}=-0.3325±0.0013_{stat}±0.0019_{syst} at 1σ for the case of coupling to right-handed neutrinos (C_{T}=-C_{T}^{'}), which is consistent with the standard model prediction.

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

Affiliations

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

Authors

Affiliations

Abstract

LinkOut - more resources

Full Text Sources

Research Materials