Search for lepton-number violating processes in B+ -> h- l+ l+ decays
J. P. Lees
(1)
,
V. Poireau
(1)
,
V. Tisserand
(1)
,
D. Bernard
(2)
,
M. Verderi
(2)
,
S. Emery
(3)
,
G. Hamel de Monchenault
(3)
,
G. Vasseur
(3)
,
Ch. Yèche
(3)
,
N. Arnaud
(4)
,
M. Davier
(4)
,
D. Derkach
(4)
,
G. Grosdidier
(4)
,
F. Le Diberder
(4)
,
A.M. Lutz
(4)
,
B. Malaescu
(4)
,
P. Roudeau
(4)
,
M.H. Schune
(4)
,
A. Stocchi
(4)
,
G. Wormser
(4)
G. Vasseur
- Function : Author
- PersonId : 745439
- IdHAL : georges-vasseur
N. Arnaud
- Function : Author
- PersonId : 16841
- IdHAL : nicolas-arnaud
- ORCID : 0000-0001-6589-8673
Abstract
We have searched for the lepton-number violating processes B+ -> h- l+ l+ with h- = K-/pi- and l+ = e+/mu+, using a sample of 471+/-3 million BBbar events collected with the BaBar detector at the PEP-II e+e- collider at the SLAC National Accelerator Laboratory. We find no evidence for these decays and place 90% confidence level upper limits on their branching fractions Br(B+ -> pi- e+ e+) < 2.3 x 10^{-8}, Br(B+ -> K- e+ e+) < 3.0 x 10^{-8}, Br(B+ -> pi- mu+ mu+) < 10.7 x 10^{-8}, and Br(B+ -> K- mu+ mu+) < 6.7 x 10^{-8}.