PARTIAL BRANCHING FRACTIONS

B( ${{\mathit B}^{+}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$) $/$ B( ${{\mathit B}^{+}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit e}^{+}}{{\mathit e}^{-}}$) (1.0 $<$ q${}^{2}<$ 6.0 GeV${}^{2}$/c${}^{4}$)

INSPIRE   PDGID:
S041PBP
VALUE DOCUMENT ID TECN  COMMENT
$\bf{ 0.96 \pm0.05}$ OUR AVERAGE
$0.949$ ${}^{+0.042}_{-0.041}$ $\pm0.022$ 1
AAIJ
2023AB
 LHCB ${{\mathit p}}{{\mathit p}}$ at 7, 8, 13 TeV
$1.39$ ${}^{+0.36}_{-0.33}$ $\pm0.02$ 2
CHOUDHURY
2021
BELL ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \Upsilon}{(4S)}}$
• • We do not use the following data for averages, fits, limits, etc. • •
$0.846$ ${}^{+0.042}_{-0.039}$ ${}^{+0.013}_{-0.012}$ 3, 4
AAIJ
2022V
 LHCB ${{\mathit p}}{{\mathit p}}$ at 7, 8, 13 TeV
$0.846$ ${}^{+0.060}_{-0.054}$ ${}^{+0.016}_{-0.014}$ 3, 5
AAIJ
2019S
 LHCB ${{\mathit p}}{{\mathit p}}$ at 7, 8, 13 TeV
$0.745$ ${}^{+0.090}_{-0.074}$ $\pm0.036$ 3
AAIJ
2014AR
 LHCB ${{\mathit p}}{{\mathit p}}$ at 7, 8 TeV
1  Measured for the region 1.1 $<$ q${}^{2}$ $<$ 6.0 GeV${}^{2}$/c${}^{4}$.
2  Measurements in other q${}^{2}$ bins are also reported.
3  The ratio is determined using the relative branching fractions of the decays ${{\mathit B}^{+}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit \ell}^{+}}{{\mathit \ell}^{-}}$ and ${{\mathit B}^{+}}$ $\rightarrow$ ${{\mathit J / \psi}}(\rightarrow$ ${{\mathit \ell}^{+}}{{\mathit \ell}^{-}}$) ${{\mathit K}^{+}}$, with ${{\mathit \ell}}$ = ${{\mathit e}}$, ${{\mathit \mu}}$. Measured for the region 1.1 $<$ q${}^{2}$ $<$ 6.0 GeV${}^{2}$/c${}^{4}$.
4  Superseded by AAIJ 2023AB.
5  Superseded by AAIJ 2022V.
References