Pion, muon decays and weak interaction symmetries
Abstract
We review the recent measurements of the rare pion decays: Pi+ -> Pi0 e+ Nu [pion beta, Pi(e3), or Pibeta decay], radiative decay Pi+ -> e+ Nu Gamma [Pi(e2Gamma) or RPD], and Pi+ -> e+ Nu [Pi(e2)] decay, as well as the radiative muon decay, Mu -> e Nu Nu-bar Gamma, their theoretical implications, and prospects for further improvement.
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