LIMIT ON ${{\mathit \mu}^{-}}$ $\rightarrow$ ${{\mathit e}^{-}}$ CONVERSION

Forbidden by lepton family number conservation.

${\mathit \sigma (}$ ${{\mathit \mu}^{-}}$ ${}^{32}\mathrm {S}$ $\rightarrow$ ${{\mathit e}^{-}}{}^{32}\mathrm {S}{)}$ / ${\mathit \sigma (}$ ${{\mathit \mu}^{-}}$ ${}^{32}\mathrm {S}$ $\rightarrow$ ${{\mathit \nu}_{{\mu}}}{}^{32}\mathrm {P}^{*}{)}$

INSPIRE  
VALUE CL% DOCUMENT ID TECN  COMMENT
$\bf{<7 \times 10^{-11}}$ 90
BADERTSCHER
1980
STRC SIN
• • We do not use the following data for averages, fits, limits, etc. • •
$<4 \times 10^{-10}$ 90
BADERTSCHER
1977
STRC SIN
Conservation Laws:
LEPTON FAMILY NUMBER
References:
BADERTSCHER 1980
LNC 28 401 New Upper Limits for Muon-Electron Conversion in Sulfur
Also
NP A377 406 A Search for muon-electron and muon-positron Conversion in Sulfur
BADERTSCHER 1977
PRL 39 1385 Upper Limit for Muon-Electron Conversion in Sulfur