{"paper":{"title":"New color-octet axial vector boson revisited","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Bo Xiao, Hao Wang, Shou-hua Zhu, You-kai Wang","submitted_at":"2011-07-28T17:00:55Z","abstract_excerpt":"In this paper we re-examine how to utilize the previous proposed color-octet axial-vector boson $Z_{\\rm C}$ to explain the $3.4\\sigma$ anomaly of $t\\bar t$ forward-backward (FB) asymmetry $A_{\\rm FB}$ for $m_{t\\bar t}> 450$GeV observed by CDF. Our numerical results indicate that the best-fit parameters are $g_A^q=0.07$, $g_A^Q=3$, and $M_{\\rm C}=440\\text{GeV}$, which are obtained by fitting the mass dependent $A_{\\rm FB}$ and total cross section data provided by a recent CDF measurement. Here $g_A^q (g_A^Q)$ and $M_{\\rm C}$ are the axial couplings among $Z_{\\rm C}$ with the first two (the thir"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1107.5769","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"}