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New measurement of theπ→μνγdecay

Authors
Journal
Nuclear Physics B
0550-3213
Publisher
Elsevier
Publication Date
Volume
513
Issue
3
Identifiers
DOI: 10.1016/s0550-3213(97)00734-7
Keywords
  • Particle Physics

Abstract

Abstract We have measured the branching ratio of the radiative decay π → μνγ. The energies of the gamma-ray and of the muon were both measured and the Dalitz-plot distribution of the decay was obtained. The data agree well with the theoretical prediction (QED internal bremsstrahlung) down to a γ-ray energy of 1 MeV. The discrepancy reported in a previous experiment is not confirmed.

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