First observation of the decay $B^{+} \rightarrow \pi^{+} \mu^{+} \mu^{-}$

Aaij, R; Abellan Beteta, C; Adametz, A; Adeva, B; Adinolfi, M; Adrover, C; Affolder, A; Ajaltouni, Z; Albrecht, J; Alessio, F

doi:10.1007/JHEP12(2012)125

First observation of the decay $B^{+} \rightarrow \pi^{+} \mu^{+} \mu^{-}$

LHCb

Collaboration

Oct, 2012

20 pages

Published in:

JHEP 12 (2012) 125

e-Print:

1210.2645 [hep-ex]

DOI:

10.1007/JHEP12(2012)125

PDG:

{{\mathit B}^{+}}

\rightarrow

{{\mathit K}^{+}}{{\mathit \mu}^{+}}{{\mathit \mu}^{-}}

Report number:

LHCB-PAPER-2012-020,
CERN-PH-EP-2012-284

Experiments:

CERN-LHC-LHCb

View in:

pdf

reference search107 citations

Citations per year

Abstract:

A discovery of the rare decay

B^{+} \rightarrow \pi^{+} \mu^{+} \mu^{-}

is presented. This decay is observed for the first time, with 5.2

\sigma

significance. The observation is made using

pp

collision data, corresponding to an integrated luminosity of 1.0 fb

^{-1}

, collected with the LHCb detector. The measured branching fraction is (2.3

\pm

0.6 (stat.)

\pm

0.1 (syst.))

\times 10^{-8}

, and the ratio of the

B^{+} \rightarrow \pi^{+} \mu^{+} \mu^{-}

and B^{+} \rightarrow \K^{+} \mu^{+} \mu^{-} branching fractions is measured to be 0.053

\pm

0.014 (stat.)

\pm

0.001 (syst.).

B+: rare decay
B: branching ratio: measured
p p: scattering
LHC-B
dimuon: mass spectrum
branching ratio: ratio
CKM matrix
experimental results
CERN LHC Coll
B+ --> pi+ muon+ muon-

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First observation of the decay B+→π+μ+μ−B^{+} \rightarrow \pi^{+} \mu^{+} \mu^{-}B+→π+μ+μ−

Citations per year

First observation of the decay $B^{+} \rightarrow \pi^{+} \mu^{+} \mu^{-}$