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 Li8 β Decay

Ist Teil von

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

Ort / Verlag

United States: American Physical Society (APS)

Erscheinungsjahr

2022

Quelle

Free E-Journal (出版社公開部分のみ）

Beschreibungen/Notizen

• Here, 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 $β-\bar{ν}$ correlation of trapped 8Li ions with the Beta-decay Paul Trap. We find $a_{β\barν}$ = - 0.3325 ± 0.0013stat ± 0.0019syst at 1σ for the case of coupling to right-handed neutrinos (CT = -C$^{'}_{T}$), which is consistent with the standard model prediction.