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Has the running of the electron mass ever been measured? Is it possible at the LHC?

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QED predicts that the electron mass slightly changes with energy: it "runs" with energy.

Has this effect ever been measured for the electron? Can this effect be measured at the LHC?

Google Scholar does not seem to yield any publication.

(The running has been measured for the top quark mass: https://cms.cern/news/watching-top-quark-mass-run )

asked Apr 27 in Open problems by Benoît [ revision history ]
edited Apr 30

Please give a reference for the claimed effect.

commented Apr 28 by Arnold Neumaier (15,787 points) [ no revision ]

Arnold, is this a trick question? Feynman talks about the renormalization and the running of mass in his book "QED", in the chapter called "Loose ends".

commented Apr 29 by Benoît [ no revision ]

No. But your question was very unprecise; in QED, the electron mass is a constant defining (together with the electron charge) the theory. So you are asking abot whether the dependence of the running electron mass (which is a different thing, depending on the choice of the renormalization scale) on the energy has been measured.

I don't know the answer.

commented Apr 29 by Arnold Neumaier (15,787 points) [ revision history ]

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