{"paper":{"title":"Constraining interactions mediated by axion-like particles with ultracold neutrons","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ph"],"primary_cat":"hep-ex","authors_text":"A. Kozela, A. Mtchedlishvili, A. Schnabel, A. Weis, B. Franke, B. Lauss, D. Rebreyend, D. Ries, F. M. Piegsa, G. Ban, G. Bison, G. Pignol, G. Qu\\'em\\'ener, G. Wyszynski J. Zejma, G. Zsigmond, H.-C. Koch, J. Krempel, J. Voigt, J. Zenner, K. Bodek, K. Kirch, M. Burghoff, M. Daum, M. Fertl, M. Kasprzak, N. Severijns, O. Naviliat-Cuncic, P. Knowles, P. N. Prashanth, P. Schmidt-Wellenburg, S. Afach, S. Komposch, S. Roccia, T. Lefort, V. H\\'elaine, Y. Kerma\\\"idic, Y. Lemi\\`ere, Z. D. Gruji\\'c","submitted_at":"2014-12-11T15:27:56Z","abstract_excerpt":"We report a new limit on a possible short range spin-dependent interaction from the precise measurement of the ratio of Larmor precession frequencies of stored ultracold neutrons and $^{199}$Hg atoms confined in the same volume. The measurement was performed in a $\\sim$1$\\mu$ T vertical magnetic holding field with the apparatus searching for a permanent electric dipole moment of the neutron at the Paul Scherrer Institute. A possible coupling between freely precessing polarized neutron spins and unpolarized nucleons of the wall material can be investigated by searching for a tiny change of the "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1412.3679","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":""},"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"}