Abstract
The mu nu mathrm {SSM} is a highly predictive alternative model to the MSSM. In particular, the electroweak sector of the model can explain the longstanding discrepancy between the experimental result for the anomalous magnetic moment of the muon, (g-2)_mu , and its Standard Model prediction, while being in agreement with all other theoretical and experimental constraints. The recently published MUON G-2 result is within {0.8},sigma in agreement with the older BNL result on (g-2)_mu . The combined result was announced as a_mu ^{mathrm{exp}} = (11 659 {206.1}pm {4.1}) times 10^{-10}, yielding a new deviation from the Standard Model prediction of Delta a_mu = ({25.1}pm {5.9}) times 10^{-10}, corresponding to {4.2},sigma . Using this improved bound we update the analysis in the mu nu mathrm {SSM} as presented in Kpatcha et al. (Eur Phys J C 81(2):154. arXiv:1912.04163 [hep-ph], 2021) and set new limits on the allowed parameters space of the electroweak sector of the model. We conclude that significant regions of the model can explain the new (g-2)_mu data.
Highlights
The experimental result for the anomalous magnetic moment of the muon, aμ := (g −2)μ, was so far aμexp−BNL = (11659209.1 ± 6.3) × 10−10, (1)combining statistical and systematic uncertainties
The EW sector of the μνSSM can account for a variety of experimental data, most importantly it can account for the long-standing discrepancy of aμ, while being in agreement with current searches at the LHC
The new result for the Run 1 data of the MUON G-2 experiment confirmed the deviation from the Standard Model (SM) prediction found previously at BNL
Summary
[1], some of us performed an analysis of the ( current) deviation of aμ[5,6], taking into account all relevant data for the electroweak (EW) sector of the ‘μ from ν’ Supersymmetric Standard Model (μνSSM) [33] We analyze the combination of the FNAL Run 1 data with the previous BNL result [26,27]. Using this improved bound we update the results presented in Ref. A recent general analysis of the impact of the new FNAL result in the MSSM can be found in Ref. A recent general analysis of the impact of the new FNAL result in the MSSM can be found in Ref. [50]
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