Muon g − 2 vs LHC Run 2 in supersymmetric models
Motoi Endo, Koichi Hamaguchi, Sho Iwamoto, Teppei Kitahara
Abstract
A bstract 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 $$ {m}_{{\tilde{\mu}}_{\mathrm{L}}}\underset{\sim }{>}{m}_{{\tilde{\chi}}_1^{\pm }} $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msub> <mml:mi>m</mml:mi> <mml:msub> <mml:mover> <mml:mi>μ</mml:mi> <mml:mo>˜</mml:mo> </mml:mover> <mml:mi>L</mml:mi> </mml:msub> </mml:msub> <mml:munder> <mml:mo>></mml:mo> <mml:mo>~</mml:mo> </mml:munder> <mml:msub> <mml:mi>m</mml:mi> <mml:msubsup> <mml:mover> <mml:mi>χ</mml:mi> <mml:mo>˜</mml:mo> </mml:mover> <mml:mn>1</mml:mn> <mml:mo>±</mml:mo> </mml:msubsup> </mml:msub> </mml:math> are still widely allowed, where the lighter chargino dominantly decays into a W -boson and a neutralino.