W mass and Leptonic Z-decays in the NMSSM

Details W mass and Leptonic Z-decays in the NMSSM W mass and Leptonic Z-decays in the NMSSM

2011-01-25

arxiv.org/abs/1101.4758v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

25 pages, 12 figures

Scientific paper

We study a subset of electroweak-precision observables consisting of $M_W$, $\sin^2\theta_{{\tiny eff}}^{\tau}$, $BR(Z\to\tau^+\tau^-)$ and $\Gamma(Z\to\tau^+\tau^-)/\Gamma(Z\to e^+e^-)-1$ (characterizing leptonic $Z$-decays) in the context of the NMSSM. After a brief review of common MSSM-NMSSM effects, e.g. for $\Gamma(Z\to\tau^+\tau^-)/\Gamma(Z\to e^+e^-)-1$, which has been little discussed, even in the MSSM), specific NMSSM scenarios are studied, with the result that the NMSSM, considering existing constraints on its spectrum, is essentially consistent with available measurements, given the current accuracy.

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