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  4. Test of Lepton Universality Using B+ -> K(+)l(+)l(-) Decays
 
research article

Test of Lepton Universality Using B+ -> K(+)l(+)l(-) Decays

Aaij, R.
•
Adeva, B.
•
Adinolfi, M.
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2014
Physical Review Letters

A measurement of the ratio of the branching fractions of the B+ -> K+mu(+)mu(-) and B+ -> K(+)e(+)e(-) decays is presented using proton-proton collision data, corresponding to an integrated luminosity of 3.0 fb(-1), recorded with the LHCb experiment at center-of-mass energies of 7 and 8 TeV. The value of the ratio of branching fractions for the dilepton invariant mass squared range 1 < q(2) < 6 GeV2/c(4) is measured to be 0.745(-0.074)(+0.090)(stat) +/- 0.036(syst). This value is the most precise measurement of the ratio of branching fractions to date and is compatible with the standard model prediction within 2.6 standard deviations.

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Type
research article
DOI
10.1103/PhysRevLett.113.151601
Web of Science ID

WOS:000344245600001

Author(s)
Aaij, R.
Adeva, B.
Adinolfi, M.
Affolder, A.
Ajaltouni, Z.
Akar, S.
Albrecht, J.
Alessio, F.
Alexander, M.
Ali, S.
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Corporate authors
LHCb Collaboration
Date Issued

2014

Publisher

Amer Physical Soc

Published in
Physical Review Letters
Volume

113

Issue

15

Article Number

151601

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LPHE  
Available on Infoscience
December 30, 2014
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/109816
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