{"paper":{"title":"The Top Forward Backward Asymmetry with general Z ' couplings","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"hep-ph","authors_text":"Ahmed Rashed, Alakabha Datta, Murugeswaran Duraisamy","submitted_at":"2011-06-29T15:54:21Z","abstract_excerpt":"The measurement of the top forward-backward asymmetry in $\\ttbar$ production measured at the Tevatron shows deviation from the Standard Model prediction. A $ u \\to t$ transition via a flavor changing $Z^{\\prime}$ can explain the data. We show that left handed $t_Lu_LZ^{\\prime}$ couplings can be constrained from $B_{d,s}$ mixing while the constrains on the right handed couplings $t_R u_R Z^{\\prime}$ vanish in the limit of $m_u \\to 0$. We then consider the most general form of the $t uZ^{\\prime}$ interaction which includes vector-axial vector as well as tensor type couplings and study how these "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1106.5982","kind":"arxiv","version":3},"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"}