{"paper":{"title":"Implications of effective axial-vector coupling of gluon for $t\\bar{t}$ spin polarizations at the LHC","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"hep-ph","authors_text":"A. Racioppi, E. Gabrielli, H. Veermae, M. Raidal","submitted_at":"2012-12-13T19:10:44Z","abstract_excerpt":"We analyze the impact of effective axial-vector coupling of the gluon on spin polarization observables in $t\\bar{t}$ pair production at the LHC. Working at leading order in QCD, we compute the $t\\bar{t}$ spin-correlation and left-right spin asymmetry coefficients in the helicity basis in the laboratory frame as functions of the new physics scale $\\Lambda$ associated with this coupling. We found that the $t\\bar{t}$ invariant mass dependent asymmetries are more sensitive to the scale $\\Lambda$ than the corresponding inclusive ones, in particular when suitable cuts selecting high $t\\bar{t}$ invar"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1212.3272","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"}