{"paper":{"title":"The electric dipole moment of the neutron from $N_f=2+1+1$ twisted mass fermions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-lat","authors_text":"Andreas Athenodorou, Constantia Alexandrou, Giannis Koutsou, Karl Jansen, Konstantin Ottnad, Kyriakos Hadjiyiannakou, Marcus Petschlies, Martha Constantinou","submitted_at":"2015-11-16T13:01:12Z","abstract_excerpt":"We extract the neutron electric dipole moment (nEDM) $ \\vert \\vec{d}_n \\vert $ on configurations produced with $N_f=2+1+1$ twisted mass fermions with lattice spacing of $a \\simeq 0.082$ fm and a light quark mass that corresponds to $M_{\\pi} \\simeq 373$ MeV. We do so by evaluating the $CP$-odd form factor $F_3$ for small values of the $CP$-violation parameter $\\theta$ in the limit of zero momentum transfer. This limit is extracted using the usual parametrization but in addition position space methods. The topological charge is computed via cooling and gradient flow using the Wilson, Symanzik tr"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1511.04942","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"}