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arXiv · 1308.3712

Tracking Down the Top Quark Forward-Backward Asymmetry with Monotops

Abhishek Kumar·John N. Ng·Andrew Spray·Peter T. Winslow
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Abstract

We revisit the possibility that the top quark forward-backward asymmetry arises from the on-shell production and decay of scalar top partners to top-antitop pairs with missing transverse energy. Although the asymmetry is produced by t-channel exchange of a light mediator, the model remains unconstrained by low energy atomic parity violation tests. An interesting connection to the active neutrino sector through a Type-I seesaw operator helps to evade stringent monojet constraints and opens up a richer collider phenomenology. After performing a global fit to top data from both the Tevatron and the LHC, we obtain a viable region of parameter space consistent with all phenomenological and collider constraints. We also discuss the discovery potential of a predicted monotop signal and related lepton charge asymmetry at the LHC.

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Abhishek Kumar, John N. Ng, Andrew Spray, Peter T. Winslow. 2013-11-20. Tracking Down the Top Quark Forward-Backward Asymmetry with Monotops. https://doi.org/10.1103/physrevd.88.075012

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