Muon $g$-2 vs LHC Run 2 in Supersymmetric Models

Supersymmetric models with sub-TeV charginos and sleptons have been a candidate for the origin of the long-standing discrepancy in the muon anomalous magnetic moment (g − 2). By gathering all the available LHC Run 2 results, we investigate the latest LHC constraints on models that explain the anomaly by their chargino contribution to the muon g − 2. It is shown that the parameter regions where sleptons are lighter than charginos are strongly disfavored. In contrast, we find that the models with $ {m}_{{\tilde{\mu}}_{\mathrm{L}}}\underset{\sim }{>}{m}_{{\tilde{\chi}}_1^{\pm }} $ are still widely allowed, where the lighter chargino dominantly decays into a W-boson and a neutralino.