Muon g-2 and Muonic hydrogen anomalies

[petergreat]

What's the dominating opinion about the issue that muon g-2 deviates from the standard model? Is this generally considered as experimental inaccuracy, incompetent theoretical calculation, or genuinely beyond the standard model?

On a related front, I'd like to ask about the experimental aspects of the notorious "proton charge radius" anomaly from muonic hydrogen spectroscopy. Is any other group trying to reproduce the measurement? When can we expect any further experimental results of this sort, e.g. from muonic helium?

 

[mathman]

Re muon g-2: The calculation of this parameter is extremely difficult. After the experiments indicated an anomaly, further refinements in the calculation seem to have closed the gap. You can get a better picture of the current status from Google "muon g-2".