{"paper":{"title":"$\\beta$-nuclear-recoil correlation from $^6$He decay in a laser trap","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-ex","authors_text":"A. Garc\\'ia, A. Knecht, A. Leredde, B. Graner, D.W. Storm, D.W. Zumwalt, F. Wauters, H.E. Swanson, K.G. Bailey, M.G. Sternberg, O. Naviliat-Cuncic, P. M\\\"uller, R. Hong, T.P. O'Connor, X. Fl\\'echard, Y. Bagdasarova","submitted_at":"2022-06-01T20:05:10Z","abstract_excerpt":"We report the first precise measurement of a $\\beta$-recoil correlation from a radioactive noble gas ($^6{\\rm He}$) confined via a magneto-optical trap. The measurement is motivated by the search for exotic tensor-type contributions to the charged weak current. Interpreted as tensor currents with right-handed neutrinos, the measurements yield: $|C_T/C_A|^2\\le 0.022$ (90\\% C.L.). On the other hand, for left-handed neutrinos the limits are $0.007< C_T/C_A <0.111$~(90\\%\\ C.L.). The sensitivity of the present measurement is mainly limited by experimental uncertainties in determining the time respo"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2206.00742","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/2206.00742/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"}