APEC Seminar (Astronomy - Particle Physics - Experimental Physics - Cosmology)

Speaker: Kazuki Sakurai (U Warsaw )
Title: SUSY solution to the muon (g-2) anomaly with and without stable neutralino
Date (JST): Fri, Feb 18, 2022, 13:00 - 14:00
Place: Zoom
Related File: 2772.pdf
Abstract: Supersymmetry is an attractive new physics candidate that may explain the observed anomaly in the muon g-2. MSSM can give large enough contribution to the muon g-2 only if there is (a) a large higgsino-gaugino mixing, or (b) a large L-R mixing in the Bino-like LSP scenario. Both cases are strongly constrained by thee dark matter constraint. For example, the former case is severely constrained by the direct detection measurements, while the latter case suffers from overproduction of the Bino-like neutralino. We will first show how those constrains restrict the parameter space favoured by the muon g-2. In the second part of the talk, we study two scenarios where the neutralino is not the dark matter; (1) RPV and (2) GMSB with the gravitino LSP. We study the collider constraints on these scenarios and show how they open up (or close down) the muon g-2 parameter regions compared to the MSSM scenario with a stable neutralino.