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Im just a beginner in particle physics. As I have understand, electrons are considered as a point particle whose spin has nothing to do with original rotation around own axis but an intrinsic quantum number.

But muon can be considered as a heavy electron that decays into electron.can we say muon actually rotates around itself in external magnetic field? Or it is also a point like particle? How can I know?

Qmechanic
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dark_knight
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  • Possible duplicates: https://physics.stackexchange.com/q/1/2451 and links therein. – Qmechanic Apr 08 '21 at 05:02
  • As far as we know, muons are point particles just like electrons. You are confusing a spinning charged particle’s spin precession in a magnetic field with the spin itself. It has spin (intrinsic angular momentum), and in a magnetic field that spin can precess so that it doesn’t point in a constant direction. – G. Smith Apr 08 '21 at 05:46

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