Search for two body muon decay signals
R Bayes, JF Bueno, YI Davydov, P Depommier… - Physical Review D, 2015 - APS
R Bayes, JF Bueno, YI Davydov, P Depommier, W Faszer, MC Fujiwara, CA Gagliardi…
Physical Review D, 2015•APSLepton family number violation is tested by searching for μ+→ e+ X 0 decays among the
5.8× 10 8 positive muon decay events analyzed by the TWIST collaboration. Limits are set
on the production of both massless and massive X 0 bosons. The large angular acceptance
of this experiment allows limits to be placed on anisotropic μ+→ e+ X 0 decays, which can
arise from interactions violating both lepton flavor and parity conservation. Branching ratio
limits of order 10− 5 are obtained for bosons with masses of 13–80 MeV/c 2 and with …
5.8× 10 8 positive muon decay events analyzed by the TWIST collaboration. Limits are set
on the production of both massless and massive X 0 bosons. The large angular acceptance
of this experiment allows limits to be placed on anisotropic μ+→ e+ X 0 decays, which can
arise from interactions violating both lepton flavor and parity conservation. Branching ratio
limits of order 10− 5 are obtained for bosons with masses of 13–80 MeV/c 2 and with …
Lepton family number violation is tested by searching for decays among the positive muon decay events analyzed by the TWIST collaboration. Limits are set on the production of both massless and massive bosons. The large angular acceptance of this experiment allows limits to be placed on anisotropic decays, which can arise from interactions violating both lepton flavor and parity conservation. Branching ratio limits of order are obtained for bosons with masses of and with different decay asymmetries. For bosons with masses less than the asymmetry dependence is much stronger and the 90% limit on the branching ratio varies up to . This is the first study that explicitly evaluates the limits for anisotropic two body muon decays.
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