Measurements of the S-wave fraction in $B^{0}\rightarrow K^{+}\pi^{-}\mu^{+}\mu^{-}$ decays and the $B^{0}\rightarrow K^{\ast}(892)^{0}\mu^{+}\mu^{-}$ differential branching fraction

Aaij, Roel; Adeva, Bernardo; Adinolfi, Marco; Ajaltouni, Ziad; Akar, Simon; Albrecht, Johannes; Alessio, Federico; Alexander, Michael; Ali, Suvayu; Alkhazov, Georgy

doi:10.1007/JHEP11(2016)047

Measurements of the S-wave fraction in $B^{0}\rightarrow K^{+}\pi^{-}\mu^{+}\mu^{-}$ decays and the $B^{0}\rightarrow K^{\ast}(892)^{0}\mu^{+}\mu^{-}$ differential branching fraction

LHCb

Collaboration

Jun 15, 2016

33 pages

Published in:

JHEP 11 (2016) 047,
JHEP 04 (2017) 142 (erratum)

Published: Nov 8, 2016

e-Print:

1606.04731 [hep-ex]

DOI:

10.1007/JHEP11(2016)047,
10.1007/JHEP04(2017)142 (erratum)

PDG:

{{\mathit B}^{0}}

\rightarrow

{{\mathit K}^{*}{(892)}^{0}}{{\mathit \mu}^{+}}{{\mathit \mu}^{-}}

Report number:

CERN-EP-2016-141,
LHCB-PAPER-2016-012

Experiments:

CERN-LHC-LHCb

View in:

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reference search348 citations

Citations per year

Abstract: (Springer)

A measurement of the differential branching fraction of the decay B

^{0}

→ K

^{∗}

(892)

^{0}

μ

^{+}

μ

^{−}

is presented together with a determination of the S-wave fraction of the K

^{+}

π

^{−}

system in the decay B

^{0}

→ K

^{+}

π

^{−}

μ

^{+}

μ

^{−}

. The analysis is based on pp-collision data corresponding to an integrated luminosity of 3 fb

^{−1}

collected with the LHCb experiment. The measurements are made in bins of the invariant mass squared of the dimuon system, q

^{2}

. Precise theoretical predictions for the differential branching fraction of B

^{0}

→ K

^{∗}

(892)

^{0}

μ

^{+}

μ

^{−}

decays are available for the q

^{2}

region 1.1 < q

^{2}

< 6.0 GeV

^{2}

/c

^{4}

. In this q

^{2}

region, for the K

^{+}

π

^{−}

invariant mass range 796 < m

_{Kπ}

< 996 MeV/c

^{2}

, the S-wave fraction of the K

^{+}

π

^{−}

system in B

^{0}

→ K

^{+}

π

^{−}

μ

^{+}

μ

^{−}

decays is found to be

{F}_{\mathrm{S}}=0.101\pm 0.017\left(\mathrm{stat}\right)\pm 0.009\left(\mathrm{syst}\right),

and the differential branching fraction of B

^{0}

→ K

^{∗}

(892)

^{0}

μ

^{+}

μ

^{−}

decays is determined to be

\mathrm{d}\mathrm{\mathcal{B}}/\mathrm{d}{q}^2=\left(0.{392}_{-0.019}^{+0.020}\left(\mathrm{stat}\right)\pm 0.010\left(\mathrm{syst}\right)\pm 0.027\left(\mathrm{norm}\right)\right)\times 1{0}^{-7}{c}^4/{\mathrm{GeV}}^2.

Note:

All figures and tables, along with any supplementary material and additional information, are available at https://lhcbproject.web.cern.ch/lhcbproject/Publications/LHCbProjectPublic/LHCb-PAPER-2016-012.html ; corrected numerical results

B physics
Hadron-Hadron scattering (experiments)
Rare decay
p p: scattering
p p: colliding beams
B0: semileptonic decay
B0: branching ratio
muon: pair production
mass spectrum: (K+ pi-)
mass dependence

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Measurements of the S-wave fraction in B0→K+π−μ+μ−B^{0}\rightarrow K^{+}\pi^{-}\mu^{+}\mu^{-}B0→K+π−μ+μ− decays and the B0→K∗(892)0μ+μ−B^{0}\rightarrow K^{\ast}(892)^{0}\mu^{+}\mu^{-}B0→K∗(892)0μ+μ− differential branching fraction

Citations per year

Measurements of the S-wave fraction in $B^{0}\rightarrow K^{+}\pi^{-}\mu^{+}\mu^{-}$ decays and the $B^{0}\rightarrow K^{\ast}(892)^{0}\mu^{+}\mu^{-}$ differential branching fraction