Five-lepton modes for the decay of μ and τ mesons
Arbuzov A. B. , Kuraev E. A. , Merenkov N. P. , Makhaldiani N. V.
Differential widths with respect to the fraction of the energy carried by the charged leptons are calculated for μ, τ-»3/· 2v decays. The case in which a "soft" pair is produced is singled out for special study. One-particle distributions are analyzed. The background for a search for the neutrinoless decay μ -> Ъе and for the muonium-antimuonium transition μ+£~— μ~β+ is estimated. The results are used to generate estimates of the spectra of five-lepton decays of the τ meson in the doubly logarithmic approximation.
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![](/ps/1202/article_18154_800_head.png "<b>Differential widths with respect to the fraction of the energy carried by the charged leptons are calculated for μ, τ-»3/· 2v decays. The case in which a "soft" pair is produced is singled out for special study. One-particle distributions are analyzed. The background for a search for the neutrinoless decay </b><i>μ -> Ъе </i><b>and for the muonium-antimuonium transition μ<sup>+</sup>£~— </b><i>μ</i><b><i>~β<sup>+</sup> </i></b><b>is estimated. The results are used to generate estimates of the spectra of five-lepton decays of the τ meson in the doubly logarithmic approximation.</b>")