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

INSPIRE   PDGID:
M171U2S
VALUE (MeV) EVTS DOCUMENT ID TECN  COMMENT
$609.3$ ${}^{+4.6}_{-4.5}$ $\pm1.9$ $13$ $\pm5$k 1
AUBERT
2009AQ
BABR ${{\mathit \Upsilon}{(2S)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit X}}$
1  Assuming ${\Gamma}_{{\mathit \eta}_{{{b}}}{(1S)}}$ = 10 MeV. Not independent of the corresponding mass or mass difference measurements.
References