Experimental results from Fermilab and Brookhaven National Laboratory give a value of the anomalous magnetic dipole moment of the muon that is different from the one predicted by the Standard Model. This market will resolve YES if this ever becomes a 5-sigma difference, and there is consensus among physicists that it is the result of something beyond the Standard Model, even if it isn't known precisely what.

It resolves NO if the discrepancy disappears in further experiments or is shown to be caused by some factor other than new physics (e.g. a flaw in the experiment or in theoretical calculations).