# ${{\boldsymbol \gamma}}$ ENERGY IN ${{\boldsymbol \Upsilon}{(3S)}}$ DECAY INSPIRE search

VALUE (MeV) EVTS DOCUMENT ID TECN  COMMENT
$\bf{ 99.26 \pm0.22}$ OUR EVALUATION  Treating systematic errors as correlated
$\bf{ 99.53 \pm0.23}$ OUR AVERAGE  Error includes scale factor of 1.3.
$99.15$ $\pm0.07$ $\pm0.25$
 2005
CLEO ${{\mathit \Upsilon}{(3S)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit X}}$
$99$ $\pm1$ 169
 1992 B
CLE2 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \ell}^{+}}{{\mathit \ell}^{-}}{{\mathit \gamma}}{{\mathit \gamma}}$
$100.1$ $\pm0.4$ 11147 1
 1992
CSB2 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \gamma}}$ X
$100.2$ $\pm0.5$ 223 2
 1992
CSB2 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \ell}^{+}}{{\mathit \ell}^{-}}{{\mathit \gamma}}{{\mathit \gamma}}$
$99.5$ $\pm0.1$ $\pm0.5$ 25759
 1991
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 .

${{\mathit \gamma}}$ energy in ${{\mathit \Upsilon}{(3S)}}$ decay (MeV)
References:
 ARTUSO 2005
PRL 94 032001 Photon Transitions in ${{\mathit \Upsilon}{(2S)}}$ and ${{\mathit \Upsilon}{(3S)}}$ Decays
 CRAWFORD 1992B
PL B294 139 Exclusive ${{\mathit \chi}{(2P)}}$ Production in ${{\mathit \Upsilon}{(3S)}}$ Decay
 HEINTZ 1992
PR D46 1928 ${\mathit {\mathit b}}{\mathit {\overline{\mathit b}}}$ Spectroscopy from the ${{\mathit \Upsilon}{(3S)}}$ State
 MORRISON 1991
PRL 67 1696 Inclusive ${{\mathit \chi}{(2P)}}$ Production in ${{\mathit \Upsilon}{(3S)}}$ Decay