Fourth Generation Leptons and Muon $g-2$

Details Fourth Generation Leptons and Muon $g-2$ Fourth Generation Leptons and Muon $g-2$

2008-10-20

arxiv.org/abs/0810.3598v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

Poster write-up at ICHEP08, Philadelphia, USA, July 2008. 3 pages, LaTeX, 1 eps figure

Scientific paper

We consider the contributions to $g_\mu-2$ 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 $V_{N\mu}$, from the Standard Model to the Two-Higgs Doublet Models. With contribution from $E$, we consider flavor changing neutral couplings.

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