# ${\boldsymbol m}_{{{\boldsymbol \Sigma}^{0}}}–{\boldsymbol m}_{{{\boldsymbol \Lambda}}}$ INSPIRE search

VALUE (MeV) EVTS DOCUMENT ID TECN  COMMENT
$\bf{ 76.959 \pm0.023}$ OUR FIT
$76.966$ $\pm0.020$ $\pm0.013$ 3327
 1997
SPEC ${{\mathit \Sigma}^{0}}$ $\rightarrow$ ${{\mathit \Lambda}}{{\mathit \gamma}}$ $\rightarrow$ ( ${{\mathit p}}{{\mathit \pi}^{-}}$) ( ${{\mathit e}^{+}}{{\mathit e}^{-}}$)
• • • We do not use the following data for averages, fits, limits, etc. • • •
$76.23$ $\pm0.55$ 109
 1975
HLBC ${{\mathit \Sigma}^{0}}$ $\rightarrow$ ${{\mathit \Lambda}}{{\mathit \gamma}}$
$76.63$ $\pm0.28$ 208
 1965
HBC See note with ${{\mathit \Lambda}}$ mass
References:
 WANG 1997
PR D56 2544 A Precise Measurement of the ${{\mathit \Sigma}^{0}}$ Mass
 COLAS 1975
NP B91 253 Search for Electromagnetic Decays of Neutral Hyperons in the $1210 - 1500$ MeV Mass Range and of Neutral Mesons in the $150 - 600$ MeV Mass Range
 SCHMIDT 1965
PR 140 B1328 Precise Hyperon Masses