${{\mathit \chi}_{{{b1}}}{(1P)}}$ Cross-Particle Branching Ratios

B( ${{\mathit \chi}_{{{b1}}}{(1P)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \Upsilon}{(1S)}}$) ${\times }$ B( ${{\mathit \Upsilon}{(3S)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \chi}_{{{b1}}}{(1P)}}$) ${\times }$ B( ${{\mathit \Upsilon}{(1S)}}$ $\rightarrow$ ${{\mathit \ell}^{+}}{{\mathit \ell}^{-}}$)

INSPIRE   PDGID:
M077B02
VALUE ($ 10^{-5} $) EVTS DOCUMENT ID TECN  COMMENT
$\bf{ 1.30 \pm0.34}$ OUR AVERAGE
$1.16$ ${}^{+0.78}_{-0.67}$ ${}^{+0.14}_{-0.16}$ 1
LEES
2014M
BABR ${{\mathit \Upsilon}{(3S)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}{{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$
$1.33$ $\pm0.30$ $\pm0.23$ 50
KORNICER
2011
CLEO ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}{{\mathit \ell}^{+}}{{\mathit \ell}^{-}}$
1  From a sample of ${{\mathit \Upsilon}{(3S)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}{{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$ with converted photons.
References