{"paper":{"title":"Improved Limit on Tensor Currents in the Weak Interaction from $^8$Li $\\beta$ Decay","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ph","nucl-th"],"primary_cat":"nucl-ex","authors_text":"A. F. Levand, A. Laminack, A. P\\'erez Galv\\'an, A. T. Gallant, B. Longfellow, B. Maa{\\ss}, B. S. Wang, D. P. Burdette, D. Ray, E. Heckmaier, G. E. Morgan, G. H. Sargsyan, G. Savard, J. R. Pierce, J. W. Klimes, K. D. Launey, K. G. Leach, K. Joerres, K. Kolos, K. Siegl, K. S. Sharma, L. Varriano, M. Brodeur, M. T. Burkey, N. D. Scielzo, P. Mueller, R. Orford, R. Segel, S. T. Marley, S. W. Padgett, T. Y. Hirsh","submitted_at":"2022-05-04T02:43:43Z","abstract_excerpt":"The electroweak interaction in the Standard Model (SM) is described by a pure vector-axial-vector structure, though any Lorentz-invariant component could contribute. In this work, we present the most precise measurement of tensor currents in the low-energy regime by examining the $\\beta$-$\\bar{\\nu}$ correlation of trapped $^{8}$Li ions with the Beta-decay Paul Trap. We find $a_{\\beta\\nu} = -0.3325 \\pm 0.0013_{stat} \\pm 0.0019_{syst}$ at $1\\sigma$ for the case of coupling to right-handed neutrinos $(C_T=-C_T')$, which is consistent with the SM prediction."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2205.01865","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2205.01865/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}