Details

Autor(en) / Beteiligte

• Burkey, M T
• Savard, G
• Gallant, A T
• Scielzo, N D
• Clark, J A
• Hirsh, T Y
• Varriano, L
• Sargsyan, G H
• Launey, K D
• Brodeur, M
• Burdette, D P
• Heckmaier, E
• Joerres, K
• Klimes, J W
• Kolos, K
• Laminack, A
• Leach, K G
• Levand, A F
• Longfellow, B
• Maaß, B
• Marley, S T
• Morgan, G E
• Mueller, P
• Orford, R
• Padgett, S W
• Pérez Galván, A
• Pierce, J R
• Ray, D
• Segel, R
• Siegl, K
• Sharma, K S
• Wang, B S

Titel

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

Ist Teil von

• Physical review letters, 2022-05, Vol.128 (20), p.202502-202502

Ort / Verlag

United States

Erscheinungsjahr

2022

Quelle

Free E-Journal (出版社公開部分のみ）

Beschreibungen/Notizen

• 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.