Top asymmetry and the search for a light hadronic resonance in association with single top

Abstract

The exchange of a light $t$-channel flavor-changing gauge boson, $\text{Vp}$, with mass $\sim m_{top}$ remains a leading explanation for the anomalous forward backward asymmetry in top quark production at the Tevatron. Unlike other ideas, including heavier $t$-channel mediators, the light $\text{Vp}$ model is not easily seen in the $\text{mtt}$ distribution. We advocate a more promising strategy. While current analyses at hadron colliders may not be sensitive, we propose searching for a $jj$ resonance in association with single top that may allow discovery in existing data. Deviations in the lepton charge asymmetry in this sample should also be present.

Comments: 5 pages, 2 figure