Question

What is the smallest distance measured that the muon is considered pointlike?

Answer 1

What is the smallest distance measured that the muon is considered pointlike. I know for the electron it is clost to 0.001 of a femtometer. It seems to be assumed that this is the same for the muon. However, I can't find this stat for the muon in a Google search. My thinking on this is that if their is a muon radius, obviously suggesting substructure that is in the ball park of 0.04 femtometeres, could this affect the lambshift and possible explain the discrepancy in the recent measurements of the proton radius and possibly the anamolous muon magnetic moment?

Answer 2

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