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The exchange of a light -channel flavor-changing gauge boson, , with mass remains a leading explanation for the anomalous forward backward asymmetry in top quark production at the Tevatron. Unlike other ideas, including heavier -channel mediators, the light model is not easily seen in the distribution. We advocate a more promising strategy. While current analyses at hadron colliders may not be sensitive, we propose searching for a 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.

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