Leptoquark and vectorlike quark extended models as the explanation of the muon $g-2$ anomaly

He, Shi-Ping

doi:10.22323/1.414.0137

Abstract

In minimal leptoquark (LQ) models, the

$R_2$ and

$S_1$ can be the solution to the

$(g-2)_{\mu}$ anomaly because of the chiral enhancements. Here, we study the LQ and vectorlike quark (VLQ) extended models. In the one LQ and one VLQ extended models, the

$(g-2)_{\mu}$ can receive the contributions from top and top partner

$T$ because of the

$t-T$ mixing. Besides the traditional

$R_2$ and

$S_1$ representations, we find that the

$S_3$ LQ can also explain the anomaly when including the

$(X,T,B)_{L,R}$ triplet at the same time. Moreover, we find that the LQ has the new decay channel

$T\mu$ in these models.