# What consequences does a positive muon anomalous magnetic moment have for astronomy?

On April 7th, 2021, the muon $$(g-2)$$ collaboration published Measurement of the Positive Muon Anomalous Magnetic Moment to 0.46 ppm, a result which made it to standard news, partly under headlines like Farewell to the Standard Model (German source: Abschied vom Standardmodell)

The following quote from phys.org nicely summarizes what it is in general about:

The experiment at Brookhaven indicated that g-2 differed from the theoretical prediction by a few parts per million. This miniscule difference hinted at the existence of unknown interactions between the muon and the magnetic field—interactions that could involve new particles or forces.

I am now wondering if there are theoretical studies which illuminate what concrete effects a $$g-2 > 0$$ would have on astronomy, as e.g. Dominik Stöckinger states (translation by me):

Some variants of supersymmetry, in which so-called superpartner particles also explain dark matter, are no longer tenable by this measurement.

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• cool question! – uhoh Apr 8 at 21:52
• I was not sure how it would be perceived, glad that you like it. – B--rian Apr 9 at 6:41