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arXiv · 0810.3598

Fourth Generation Leptons and Muon $g-2$

George Wei-Shu Hou·Fei-Fan Lee·Chien-Yi Ma
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Abstract

We consider the contributions to $g_μ-2$ from fourth generation neutral and charged leptons, $N$ and $E$, at the one-loop level. Diagramatically, there are two types of contributions: boson-boson-$N$, and $E$-$E$-boson in the loop diagram. In general, the effect from $N$ is suppressed by off-diagonal PMNS matrix element $V_{Nμ}$, from the Standard Model to the Two-Higgs Doublet Models. With contribution from $E$, we consider flavor changing neutral couplings.

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George Wei-Shu Hou, Fei-Fan Lee, Chien-Yi Ma. 2008-11-04. Fourth Generation Leptons and Muon $g-2$. https://arxiv.org/abs/0810.3598

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