pdgLive

⁴	Uses B( $B^{+}$ $\to$ $J / ψ (1 S) K^{+}$ ) = ( $0.998$ $\pm 0.014$ $\pm 0.040$ ) $\times 10^{- 3}$ for normalization and $μ^{+} μ^{-}$ for leptons. Measured for 1.1 $<$ q $^{2} <$ 6.0 GeV $^{2}$ /c $^{4}$ .

⁵

Measured by taking the ratio of the branching fraction from

B^{+}

\to

K^{+} e^{+} e^{-}

and

B^{+}

\to

J / ψ

(

e^{+} e^{-}

)

K^{+}

decays and multiplying it by the measured value of

B^{+}

K^{+}

and

J / ψ

\to

e^{+} e^{-}

as in PDG 2012.The branching fraction of

B^{+}

\to

K^{+} e^{+} e^{-}

is determined in the region 1

<

^{2}

<

6 GeV

^{2}

^{4}

B^{+}

\to

K^{+} ℓ^{+} ℓ^{-}

) (1.0

<

^{2} <

6.0 GeV

^{2}

^{4}

) (

10^{- 7}

)

References

CHOUDHURY

2021

JHEP 2103 105

Test of lepton flavor universality and search for lepton flavor violation in

B \to K ℓ ℓ

decays

AAIJ

2019S

PRL 122 191801

Search for lepton-universality violation in

B^{+} \to K^{+} ℓ^{+} ℓ^{-}

decays

AAIJ

2014AR

PRL 113 151601

Test of Lepton Universality using Decays

AAIJ

2014M

JHEP 1406 133

Differential Branching Fractions and Isospin Asymmetries of

B

\to

K^{(*)} μ^{+} μ^{-}

Decays

AAIJ

2013H

JHEP 1302 105

Differential Branching Fraction and Angular Analysis of the

B^{+}

\to

K^{+} μ^{+} μ^{-}

Decay

AALTONEN

2011AI

PRL 107 201802

Observation of the Baryonic Flavor-Changing Neutral Current Decay

Λ_{b}^{0}

\to

Λ μ^{+} μ^{-}

Except where otherwise noted, content of the 2024 Review of Particle Physics is licensed under a Creative Commons Attribution 4.0 International (CC BY 4.0) license. The publication of the Review of Particle Physics is supported by US DOE, MEXT (Japan), INFN (Italy) and CERN. Individual collaborators receive support for their PDG activities from their respective institutes or funding agencies. © 2024. See LBNL disclaimers.

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