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Stopped Muon Decay Lifetime Shifts due to Condensed Matter

A. Widom·Y. Srivastava·J. Swain
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Abstract

Up to second order in alpha, vacuum electro-magnetic corrections to weak interaction induced charged particle lifetimes have been previously studied. In the laboratory, stopped muon lifetimes are measured in a condensed matter medium whose radiation impedance differs from that of the vacuum. The resulting condensed matter corrections to first order in $α$ dominate those vacuum radiative corrections (two photon loops) which are second order in alpha.

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A. Widom, Y. Srivastava, J. Swain. 1999-07-09. Stopped Muon Decay Lifetime Shifts due to Condensed Matter. https://arxiv.org/abs/hep-ph/9907289

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