${\boldsymbol m}_{{{\boldsymbol \pi}^{+}}}–{\boldsymbol m}_{{{\boldsymbol \mu}^{+}}}$ INSPIRE search

Measurements with an error $>$ $0.05$ MeV have been omitted from this Listing.
VALUE (MeV) EVTS DOCUMENT ID TECN CHG  COMMENT
• • • We do not use the following data for averages, fits, limits, etc. • • •
$33.91157$ $\pm0.00067$ 1
DAUM
1991
SPEC + ${{\mathit \pi}^{+}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \nu}}$
$33.9111$ $\pm0.0011$
ABELA
1984
SPEC See DAUM 1991
$33.925$ $\pm0.025$
BOOTH
1970
CNTR + Magnetic spect.
$33.881$ $\pm0.035$ 145
HYMAN
1967
HEBC + ${{\mathit K}^{-}}{}^{}\mathrm {He}$
1  The DAUM 1991 value assumes that ${\mathit m}_{{{\mathit \nu}_{{\mu}}}}$ = 0 and uses our ${\mathit m}_{{{\mathit \mu}}}$ = $105.658389$ $\pm0.000034$ MeV.
  References:
DAUM 1991
PL B265 425 New Precision Measurement of the Muon Momentum in Pion Decay at Rest
ABELA 1984
PL 146B 431 Precision Measurement of the Muon Momentum in Pion Decay at Rest
BOOTH 1970
PL 32B 723 Mass of the Positive Pion
HYMAN 1967
PL 25B 376 Mass Measurements Using the Range Energy Relation in a Helium Bubble Chamber