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${{\mathit \gamma}}$ ENERGY IN ${{\mathit \Upsilon}{(3S)}}$ DECAY

VALUE (MeV)

EVTS

DOCUMENT ID

TECN

COMMENT

$\bf{ 86.19 \pm0.22}$

OUR EVALUATION Treating systematic errors as correlated

$\bf{ 86.40 \pm0.18}$

OUR AVERAGE

$86.04$ $\pm0.06$ $\pm0.27$

CLEO

${{\mathit \Upsilon}{(3S)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit X}}$

$86$ $\pm1$

101

CLE2

${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \ell}^{+}}{{\mathit \ell}^{-}}{{\mathit \gamma}}{{\mathit \gamma}}$

$86.7$ $\pm0.4$

10319

CSB2

${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \gamma}}$ X

$86.9$ $\pm0.4$

157

CSB2

${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \ell}^{+}}{{\mathit \ell}^{-}}{{\mathit \gamma}}{{\mathit \gamma}}$

$86.4$ $\pm0.1$ $\pm0.4$

30741

CLE2

${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \gamma}}$ X

¹	A systematic uncertainty on the energy scale of 0.9$\%$ not included. Supersedes NARAIN 1991 .

²	A systematic uncertainty on the energy scale of 0.9$\%$ not included. Supersedes HEINTZ 1991 .

References:

PRL 94 032001

Photon Transitions in ${{\mathit \Upsilon}{(2S)}}$ and ${{\mathit \Upsilon}{(3S)}}$ Decays

PL B294 139

Exclusive ${{\mathit \chi}{(2P)}}$ Production in ${{\mathit \Upsilon}{(3S)}}$ Decay

PR D46 1928

${\mathit {\mathit b}}{\mathit {\overline{\mathit b}}}$ Spectroscopy from the ${{\mathit \Upsilon}{(3S)}}$ State

PRL 67 1696

Inclusive ${{\mathit \chi}{(2P)}}$ Production in ${{\mathit \Upsilon}{(3S)}}$ Decay

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