The muon g − 2 and degenerate supersymmetry

Abstract

A degenerate supersymmetric particle spectrum can escape constraints from flavor physics and at the same time evade limits from the direct searches. If such a spectrum is light enough, it can also account for the observed value of the anomalous magnetic moment of the muon. Inspired by this, we consider a scenario where all the soft terms have approximately a common mass scale while allowing for small splittings. We study this scenario considering the constraints from Higgs mass, various B meson decays and the dark matter relic density. We find that, with superpartners ~ 800 – 1000 GeV, it is still possible to escape the present limits from the first run of LHC and flavor physics and can account for muon g − 2 within 2σ.