${{\boldsymbol \mu}}$ ELECTRIC DIPOLE MOMENT (d) INSPIRE search

A nonzero value is forbidden by both $\mathit T$ invariance and $\mathit P$ invariance.
VALUE ($ 10^{-19} $ $\mathit e~$cm) CL% DOCUMENT ID TECN CHG  COMMENT
$\bf{<1.8}$ 95 1
BENNETT
2009
MUG2 $\pm{}$ Storage ring
• • • We do not use the following data for averages, fits, limits, etc. • • •
$-0.1$ $\pm1.0$ 2
BENNETT
2009
MUG2 + Storage ring
$-0.1$ $\pm0.7$ 3
BENNETT
2009
MUG2 - Storage ring
$-3.7$ $\pm3.4$ 4
BAILEY
1978
CNTR $\pm{}$ Storage ring
$8.6$ $\pm4.5$
BAILEY
1978
CNTR + Storage ring
$0.8$ $\pm4.3$
BAILEY
1978
CNTR - Storage ring
1  This is the combination of the two BENNETT 2009 measurements quoted here separately for ${{\mathit \mu}^{+}}$ and ${{\mathit \mu}^{-}}$. The result is also presented as a measurement of ($0.0$ $\pm0.9$) $ \times 10^{-19}\mathit e$ cm.
2  Also reported as the limit of $\vert $d(${{\mathit \mu}^{+}})\vert $ $<$ $2.1 \times 10^{-19}$ $\mathit e$ cm at 95$\%$ CL.
3  Also reported as the limit of $\vert $d(${{\mathit \mu}^{-}})\vert $ $<$ $1.5 \times 10^{-19}$ $\mathit e$ cm at 95$\%$ CL.
4  This is the combination of the two BAILEY 1978 results quoted here separately for ${{\mathit \mu}^{+}}$ and ${{\mathit \mu}^{-}}$. BAILEY 1978 uses the convention d = 1/2 $\cdot{}$ (d$_{{{\mathit \mu}^{+}}}−$ d$_{{{\mathit \mu}^{-}}}$) and reports $3.7$ $\pm3.4$. We convert their result to use the same convention as BENNETT 2009 .
  Conservation Laws:
TIME REVERSAL ($\mathit T$) INVARIANCE PARITY ($\mathit P$) INVARIANCE
  References:
BENNETT 2009
PR D80 052008 Improved Limit on the Muon Electric Dipole Moment
BAILEY 1978
JP G4 345 New Limits on the Electric Dipole Moment of Positive and Negative Muons