Correlation of top asymmetries: loop versus tree origins
arXiv:1405.5313 · doi:10.1103/PhysRevD.90.034007
Abstract
We study the correlation of top asymmetries that are sensitive to the different origin of (a new contribution to) the total asymmetry: loop- or tree-level origins. We find that both the size and sign of the correlation between total and inclusive asymmetries are inherently different depending on the origin. We demonstrate the correlation by using the color-singlet and the pure axigluon taken as representative models of loop- and tree-induced total asymmetries. We calculate the next-to-leading order QCD corrections to the and perform Monte-Carlo event generation. The correlation is understood in the QCD eikonal approximation using its color structure.
arXiv comment10 pages, 7 figures; v2: layout is improved and abstract is revised, v3: published version with slight revisions
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