{"paper":{"title":"New constraints on Lorentz invariance violation from the neutron electric dipole moment","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-ex","authors_text":"A. Knecht, A. Kozela, A. Mtchedlishvili, B. Franke, B. Lauss, C. A. Baker, D. Rebreyend, D. Shiers, E. Pierre, F. Kuchler, F. M. Piegsa, G. Ban, G. Petzoldt, G. Pignol, G. Qu\\'em\\'ener, G. Zsigmond, I. Altarev, J. M. Pendlebury, J. Zejma, J. Zenner, K. Bodek, K. F. Smith, K. Green, K. Kirch, M. Daum, M. Fertl, M. G. D. van der Grinten, M. Horras, N. Khomutov, N. Severijns, O. Naviliat-Cuncic, P. Fierlinger, P. Geltenbort, P. G. Harris, P. Iaydjiev, P. Schmidt-Wellenburg, R. Henneck, S. Kistryn, S. N. Ivanov, S. Roccia, T. Lefort, Y. Lemi\\`ere, Yu. Sobolev","submitted_at":"2010-06-25T11:56:10Z","abstract_excerpt":"We propose an original test of Lorentz invariance in the interaction between a particle spin and an electromagnetic field and report on a first measurement using ultracold neutrons. We used a high sensitivity neutron electric dipole moment (nEDM) spectrometer and searched for a direction dependence of a nEDM signal leading to a modulation of its magnitude at periods of 12 and 24 hours. We constrain such a modulation to $d_{12} < 15 \\times 10^{-25} \\ e\\,{\\rm cm}$ and $d_{24} < 10 \\times 10^{-25} \\ e\\,{\\rm cm}$ at 95~\\% C.L. The result translates into a limit on the energy scale for this type of"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1006.4967","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"}