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arXiv · 1205.1898

Collider-independent t tbar forward-backward asymmetries

J. A. Aguilar-Saavedra·A. Juste
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Abstract

We introduce the forward-backward asymmetries A_u, A_d corresponding to u ubar, d dbar -> t tbar production, respectively, at hadron colliders. These are collider- and center-of-mass-independent observables, directly related to the forward-backward and charge asymmetries measured at the Tevatron and the LHC, respectively. We discuss how to extract these asymmetries from data. Because these asymmetries are collider-independent, their measurement at these two colliders could elucidate the nature of the anomalous forward-backward asymmetry measured at the Tevatron. Our framework also shows in a model-independent fashion that a positive Tevatron asymmetry exceeding the standard model expectation is compatible with the small asymmetry measured at the LHC.

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J. A. Aguilar-Saavedra, A. Juste. 2012-05-09. Collider-independent t tbar forward-backward asymmetries. https://doi.org/10.1103/physrevlett.109.211804

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