%0 Electronic Article
%A Bagnaschi, E.
%A Chakraborti, M.
%A Heinemeyer, S.
%A Saha, I.
%A Weiglein, G.
%T Interdependence of the new 'MUON G-2' Result and the W-Boson Mass
%N DESY-22-041
%M PUBDB-2022-01418
%M DESY-22-041
%M arXiv:2203.15710
%M CERN-TH-2022-034
%M IFT-UAM/CSIC-22-029
%D 2022
%Z 26 pages, 7 figures
%X The electroweak (EW) sector of the Minimal Supersymmetric extension of the Standard Model (MSSM), assuming the lightest neutralino as Dark Matter (DM) candidate, can account for a variety of experimental results. In particular it can account for the discrepancy between the experimental result for the anomalous magnetic moment of the muon, (g−2)<sub>μ</sub>, and its Standard Model (SM) prediction. The new 'MUON G-2' result, combined with the older BNL result on (g−2)<sub>μ</sub>, yields a deviation from the SM prediction of ∆a<sub>μ</sub> = (25.1 ±5.9) ×10<sup>−10</sup>, corresponding to 4.2 σ. Using this updated bound, together with the other constraints, we calculate the MSSM prediction for the mass of the W boson, M<sub>W</sub>. We assume contributions only from the EW sector, with the colored sector of the MSSM taken to be heavy. We investigate five scenarios, distinguished by the mechanisms which yield a relic DM density in agreement with the latest Planck bounds. We find that with the new (g−2)<sub>μ</sub> result taken into account and depending on the scenario, values up to M<sub>W</sub><sup>MSSM</sup>  <~80.376 GeV are reached. The largest values are obtained for wino DM and in the case of slepton co-annihilation, where points well within the 1 σ range of the experimental world average of M<sub>W</sub><sup>exp</sup> = 80.379 ± 0.012 GeV are reached, whereas the SM predicts a too small value of M<sub>W</sub><sup>SM</sup> = 80.353 GeV. We analyze the dependence of M<sub>W</sub><sup>MSSM</sup> on the relevant masses of the EW superpartners and demonstrate that future M<sub>W</sub> measurements, e.g. at the ILC, could distinguish between various MSSM realizations. Sizable contributions to M<sub>W</sub><sup>MSSM</sup> are associated with a relatively light ~χ<sup>0</sup><sub>1</sub>, accompanied by either a light chargino or a light smuon, setting interesting targets for future collider searches.
%K muon, magnetic moment (INSPIRE)
%K dark matter, density (INSPIRE)
%K minimal supersymmetric standard model (INSPIRE)
%K GeV (INSPIRE)
%K experimental results (INSPIRE)
%K sparticle (INSPIRE)
%K neutralino (INSPIRE)
%K slepton (INSPIRE)
%K electroweak interaction (INSPIRE)
%K Planck (INSPIRE)
%K ILC Coll (INSPIRE)
%K chargino (INSPIRE)
%K smuon (INSPIRE)
%K Brookhaven Lab (INSPIRE)
%F PUB:(DE-HGF)25
%9 Preprint
%R 10.3204/PUBDB-2022-01418
%U https://bib-pubdb1.desy.de/record/475674