{"paper":{"title":"Probing the CP properties of top Yukawa coupling at an $e^+e^-$ collider","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Hiroshi Yokoya, Kaoru Hagiwara, Ya-Juan Zheng","submitted_at":"2017-12-28T17:56:57Z","abstract_excerpt":"We study consequences of CP violation in the $ht\\bar{t}$ Yukawa coupling through the process $e^+e^- \\to$ $h(125)t\\bar{t}$. The helicity amplitudes are calculated in the $t\\bar{t}$ rest frame, where the initial $e^+e^-$ current and the final Higgs boson have the same three-momentum. CP-violating asymmetries appear not only in the azimuthal angle between the $e^+e^-$ plane and the $t\\bar{t}$ plane about the Higgs momentum direction, but also in the correlated decay angular distributions of $t$ and $\\bar{t}$. Complete description of the production and decay angular distributions are obtained ana"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1712.09953","kind":"arxiv","version":2},"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"}