${{\mathit \gamma}}$ ENERGY IN ${{\mathit \Upsilon}{(2S)}}$ DECAY

INSPIRE   PDGID:
M078DM
VALUE (MeV) DOCUMENT ID TECN  COMMENT
$\bf{ 110.44 \pm0.29}$ OUR AVERAGE  Error includes scale factor of 1.1.
$110.58$ $\pm0.08$ $\pm0.30$
ARTUSO
2005
CLEO ${{\mathit \Upsilon}{(2S)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit X}}$
$110.8$ $\pm0.3$ $\pm0.6$
EDWARDS
1999
CLE2 ${{\mathit \Upsilon}{(2S)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \chi}{(1P)}}$
$107.0$ $\pm1.1$ $\pm1.3$
WALK
1986
CBAL ${{\mathit \Upsilon}{(2S)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}{{\mathit \ell}^{+}}{{\mathit \ell}^{-}}$
$110.6$ $\pm0.3$ $\pm0.9$
ALBRECHT
1985E
ARG ${{\mathit \Upsilon}{(2S)}}$ $\rightarrow$ conv. ${{\mathit \gamma}}$ X
$110.4$ $\pm0.8$ $\pm2.2$
NERNST
1985
CBAL ${{\mathit \Upsilon}{(2S)}}$ $\rightarrow$ ${{\mathit \gamma}}$ X
$109.5$ $\pm0.7$ $\pm1.0$
HAAS
1984
CLEO ${{\mathit \Upsilon}{(2S)}}$ $\rightarrow$ conv. ${{\mathit \gamma}}$ X
$108.2$ $\pm0.3$ $\pm2.0$
KLOPFENSTEIN
1983
CUSB ${{\mathit \Upsilon}{(2S)}}$ $\rightarrow$ ${{\mathit \gamma}}$ X
$108.8$ $\pm4.0$
PAUSS
1983
CUSB ${{\mathit \Upsilon}{(2S)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}{{\mathit \ell}^{+}}{{\mathit \ell}^{-}}$
References