Smuon contribution to muon g-2 in Grand Unified supersymmetric theories
W Li, H Qiao, K Wang, J Zhu - arXiv preprint arXiv:2312.17523, 2023 - arxiv.org
W Li, H Qiao, K Wang, J Zhu
arXiv preprint arXiv:2312.17523, 2023•arxiv.orgIn GUT-scale constrained (GUTc) supersymmetric (SUSY) models, the mass of smuon $\tilde
{\mu} _1 $ is typically heavier than that of stau $\tilde {\tau} _1 $, and stau co-annihilation is a
typical annihilation mechanism of dark matter. However, light smuon is more favored by the
muon $ g-2$ anomaly, thus smuon-neutralino loop contribution to muon $ g-2$ is usually
smaller than that of sneutrino-chargino. Inspired by the latest muon $ g-2$ results, we take
the GUTc-Next-to-Minimal Supersymmetric Model (NMSSM) as an example, where the …
{\mu} _1 $ is typically heavier than that of stau $\tilde {\tau} _1 $, and stau co-annihilation is a
typical annihilation mechanism of dark matter. However, light smuon is more favored by the
muon $ g-2$ anomaly, thus smuon-neutralino loop contribution to muon $ g-2$ is usually
smaller than that of sneutrino-chargino. Inspired by the latest muon $ g-2$ results, we take
the GUTc-Next-to-Minimal Supersymmetric Model (NMSSM) as an example, where the …
In GUT-scale constrained (GUTc) supersymmetric (SUSY) models, the mass of smuon is typically heavier than that of stau , and stau co-annihilation is a typical annihilation mechanism of dark matter. However, light smuon is more favored by the muon anomaly, thus smuon-neutralino loop contribution to muon is usually smaller than that of sneutrino-chargino. Inspired by the latest muon results, we take the GUTc- Next-to-Minimal Supersymmetric Model (NMSSM) as an example, where the gaugino (Higgs) masses are not unified to the usual parameter (), exploring its possibility of light smuon and its contribution to muon . After complicated calculations and discussions, we conclude that in GUTc-NMSSM the smuon can be lighter than stau. In this light-smuon scenario, the contribution of smuon-neutralino loop to the muon can be larger than that of the sneutrino-chargino loop. The annihilation mechanisms of dark matter are dominated by multiple slepton or chargino co-annihilation. In our calculations, we consider also other latest related constraints like Higgs data, SUSY searches, dark matter relic density and direct detections, etc.
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