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

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M076DM

VALUE (MeV) DOCUMENT ID TECN  COMMENT $\bf{ 162.5 \pm0.4}$ OUR AVERAGE $162.56$ $\pm0.19$ $\pm0.42$ ARTUSO 2005 CLEO ${{\mathit \Upsilon}{(2S)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit X}}$ $162.0$ $\pm0.8$ $\pm1.2$ EDWARDS 1999 CLE2 ${{\mathit \Upsilon}{(2S)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \chi}{(1P)}}$ $162.1$ $\pm0.5$ $\pm1.4$ ALBRECHT 1985 E ARG ${{\mathit \Upsilon}{(2S)}}$ $\rightarrow$ conv. ${{\mathit \gamma}}$ X $163.8$ $\pm1.6$ $\pm2.7$ NERNST 1985 CBAL ${{\mathit \Upsilon}{(2S)}}$ $\rightarrow$ ${{\mathit \gamma}}$ X $158.0$ $\pm7$ $\pm1$ HAAS 1984 CLEO ${{\mathit \Upsilon}{(2S)}}$ $\rightarrow$ conv. ${{\mathit \gamma}}$ X • • We do not use the following data for averages, fits, limits, etc. • • $149.4$ $\pm0.7$ $\pm5.0$ KLOPFENSTEIN 1983 CUSB ${{\mathit \Upsilon}{(2S)}}$ $\rightarrow$ ${{\mathit \gamma}}$ X

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