Scalar leptoquark and vector-like quark extended models as the explanation of the muon g-2 anomaly: bottom partner chiral enhancement case

Leptoquark (LQ) models are well motivated solutions to the (g - 2)(mu) anomaly. In the minimal LQ models, only specific representations can lead to chiral enhancements. For the scalar LQs, R-2 and S-1 can lead to the top quark chiral enhancement. For the vector LQs, V-2 and U-1 can lead to the bottom quark chiral enhancement. When we consider the LQ and vector-like quark (VLQ) simultaneously, there can be more scenarios. In our previous study, we considered the scalar LQ and VLQ extended models with up-type quark chiral enhancement. Here, we study the scalar LQ and VLQ extended models with down-type quark chiral enhancement. We find two new models with B quark chiral enhancements, which originate from the bottom and bottom partner mixing. Then, we propose new LQ and VLQ search channels under the constraints of (g - 2)(mu).

Automated summary

Leptoquark (LQ) models are proposed as reasonable solutions to the (g - 2)(mu) anomaly. In the minimal LQ models, only specific representations can lead to chiral enhancements, either for top quarks or bottom quarks. Additionally, when considering LQ and vector-like quark (VLQ) simultaneously, more scenarios can arise. This study focuses on the scalar LQ and VLQ extended models with down-type quark chiral enhancement, identifying new models with B quark chiral enhancements originating from bottom and bottom partner mixing. New LQ and VLQ search channels are proposed under the constraints of (g - 2)(mu).