Minimal $Z'$ models for flavor anomalies

Richard H. Benavides; Luis Muñoz; William A. Ponce; Oscar Rodríguez; Eduardo Rojas

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arXiv · 1812.05077

Minimal $Z'$ models for flavor anomalies

Richard H. Benavides·Luis Muñoz·William A. Ponce·Oscar Rodríguez·Eduardo Rojas

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Abstract

By allowing gauge anomaly cancellation between fermions in different families we find a non-universal solution for a $Z'$ family of models with the same content of fermions of the standard model plus three right-handed neutrinos. We also impose constraints from the Yukawa interaction terms in such a way that at the end we obtain a solution with six free parameters. Our solution contains as particular cases well-known models in the literature. As an application, we report a model that evades LHC constraints, flavor changing neutral currents and low energy constraints. Simultaneously, the model is able to explain the flavor anomalies in the Wilson coefficients $C_9(\mu)$ and $C_{10}(\mu)$ without modifying the corresponding Wilson coefficients for the first family. In our approach, this procedure is always possible for $Z'$ masses smaller than $\sim 2.5$~TeV.

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Richard H. Benavides, Luis Muñoz, William A. Ponce, Oscar Rodríguez, Eduardo Rojas. 2018-12-12. Minimal $Z'$ models for flavor anomalies. https://arxiv.org/abs/1812.05077

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