Scattering of High-Energy Positive and Negative Muons on Electrons

Abstract
The elastic interaction of 10.1-GeV/c positive and 14.5-GeV/c negative muons with electrons in nuclear emulsion has been studied. Energies of the knock-on electrons calculated from scattering measurements were comparable with those obtained from their ejection angles. In the case of both positive and negative muon-electron elastic scattering we did not observe any departure of the muon from a Dirac-type particle with transferred energies up to 1.4 and 3 GeV, respectively. This is in contradiction with some of the previous results.

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