${{\mathit \mu}^{-}}$ BRANCHING RATIOS

INSPIRE search

Forbidden by lepton family number conservation.
S004R4
VALUE ($ 10^{-12} $) CL% DOCUMENT ID TECN CHG  COMMENT
$\bf{<1.0}$ 90 1
BELLGARDT
1988
SPEC + SINDRUM
• • • We do not use the following data for averages, fits, limits, etc. • • •
$<36$ 90
BARANOV
1991
SPEC + ARES
$<35$ 90
BOLTON
1988
CBOX + LAMPF
$<2.4$ 90 1
BERTL
1985
SPEC + SINDRUM
$<160$ 90 1
BERTL
1984
SPEC + SINDRUM
$<130$ 90 1
BOLTON
1984
CNTR LAMPF
1  These experiments assume a constant matrix element.
  References:
BARANOV 1991
SJNP 53 802 Search for ${{\mathit \mu}^{+}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{+}}{{\mathit e}^{-}}$ Decay
BELLGARDT 1988
NP B299 1 Search for the Decay ${{\mathit \mu}^{+}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{+}}{{\mathit e}^{-}}$
BOLTON 1988
PR D38 2077 Search for Rare Muon Decays with the Crystal Box Detector
Also
PRL 56 2461 Search for the Decay ${{\mathit \mu}^{+}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit \gamma}}$
Also
PRL 57 3241 Search for the Rare Decay ${{\mathit \mu}^{+}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit \gamma}}{{\mathit \gamma}}$
BERTL 1985
NP B260 1 Search for the Decay ${{\mathit \mu}^{+}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{+}}{{\mathit e}^{-}}$
BERTL 1984
PL 140B 299 New Upper Limit for the Decay ${{\mathit \mu}^{+}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{+}}{{\mathit e}^{-}}$
BOLTON 1984
PRL 53 1415 Search for the Muon Number Nonconserving Decay ${{\mathit \mu}^{-}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{-}}{{\mathit e}^{-}}$