pdgLive

${{\mathit \Upsilon}{(1S)}}$ MASS

VALUE (MeV)

DOCUMENT ID

TECN

COMMENT

$9460.40$ $\pm0.09$ $\pm0.04$

RVUE

${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ hadrons

• • We do not use the following data for averages, fits, limits, etc. • •

$9460.11$ $\pm0.11$ $\pm0.07$

RVUE

${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ hadrons

$9460.51$ $\pm0.09$ $\pm0.05$

MD1

${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ hadrons

$9460.60$ $\pm0.09$ $\pm0.05$

MD1

${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ hadrons

$9460.59$ $\pm0.12$

MD1

${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ hadrons

$9460.6$ $\pm0.4$

MD1

${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ hadrons

$9459.97$ $\pm0.11$ $\pm0.07$

CUSB

${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ hadrons

¹	Reanalysis of MD1 data using the electron mass from COHEN 1987 , the radiative corrections from KURAEV 1985 and interference effects.

²	Obtained by reanalysing CUSB data (MACKAY 1984 ), but not authored by the CUSB collaboration.

³	Reanalysis of BARU 1992B and ARTAMONOV 1984 using new electron mass (COHEN 1987 ).

⁴	Superseded by SHAMOV 2023 .

⁵	Supersedes BARU 1986 .

⁶	Superseded by ARTAMONOV 2000 .

⁷	Value includes data of ARTAMONOV 1982 .

⁸	Reanalysed by SHAMOV 2023 .

References:

PL B839 137766

Revision of results on ?(1S), ?(2S), and ?(3S) masses

PL B474 427

High Precision Mass Measurements in ${{\mathit \psi}}$ and ${{\mathit \Upsilon}}$ Families Revisited

ZPHY C56 547

Determination of the ${{\mathit \Upsilon}{(1S)}}$ Leptonic Width

ZPHY C30 551

New Measurement of the ${{\mathit \Upsilon}}$ Meson Mass

PL 137B 272

A High Precision Measurement of the ${{\mathit \Upsilon}}$, ${{\mathit \Upsilon}^{\,'}}$ and ${{\mathit \Upsilon}^{"}}$ Meson Masses

PR D29 2483

Measurement of the ${{\mathit \Upsilon}}$ Mass

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