The Tiny (g-2) Muon Wobble from Small-$μ$ Supersymmetry

Kavli Affiliate: Marcela Carena

| First 5 Authors: Sebastian Baum, Marcela Carena, Nausheen R. Shah, Carlos E. M. Wagner,

| Summary:

A new measurement of the muon anomalous magnetic moment has been reported by
the Fermilab Muon g-2 collaboration and shows a $4.2sigma$ departure from the
most precise and reliable calculation of this quantity in the Standard Model.
Assuming that this discrepancy is due to new physics, we concentrate on a
simple supersymmetric model that also provides a dark matter explanation in a
previously unexplored region of supersymmetric parameter space. Such
interesting region can realize a Bino-like dark matter candidate compatible
with all current direct detection constraints for small to moderate values of
the Higgsino mass parameter $|mu|$. This in turn would imply the existence of
light additional Higgs bosons and Higgsino particles within reach of the
high-luminosity LHC and future colliders. We provide benchmark scenarios that
will be tested in the next generation of direct dark matter experiments and at
the LHC.

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