# ${{\boldsymbol \Upsilon}{(1S)}}$ MASS INSPIRE search

VALUE (MeV) DOCUMENT ID TECN  COMMENT
$\bf{ 9460.30 \pm0.26}$ OUR AVERAGE  Error includes scale factor of 3.3.
$9460.51$ $\pm0.09$ $\pm0.05$ 1
 2000
MD1 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ hadrons
$9459.97$ $\pm0.11$ $\pm0.07$
 1984
REDE ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ hadrons
• • • We do not use the following data for averages, fits, limits, etc. • • •
$9460.60$ $\pm0.09$ $\pm0.05$ 2, 3
 1992 B
REDE ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ hadrons
$9460.59$ $\pm0.12$
 1986
REDE ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ hadrons
$9460.6$ $\pm0.4$ 4, 3
 1984
REDE ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ hadrons
1  Reanalysis of BARU 1992B and ARTAMONOV 1984 using new electron mass (COHEN 1987 ).
2  Superseding BARU 1986 .
3  Superseded by ARTAMONOV 2000 .
4  Value includes data of ARTAMONOV 1982 .
References:
 ARTAMONOV 2000
PL B474 427 High Precision Mass Measurements in ${{\mathit \psi}}$ and ${{\mathit \Upsilon}}$ Families Revisited
 BARU 1992B
ZPHY C56 547 Determination of the ${{\mathit \Upsilon}{(1S)}}$ Leptonic Width
 BARU 1986
ZPHY C30 551 New Measurement of the ${{\mathit \Upsilon}}$ Meson Mass
 ARTAMONOV 1984
PL 137B 272 A High Precision Measurement of the ${{\mathit \Upsilon}}$, ${{\mathit \Upsilon}^{\,'}}$ and ${{\mathit \Upsilon}^{"}}$ Meson Masses
 MACKAY 1984
PR D29 2483 Measurement of the ${{\mathit \Upsilon}}$ Mass