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research article
Search for B→πℓ+ℓ- decays at Belle
We present a search for the decays B+→π+ℓ+ℓ- and B0→π0ℓ+ℓ-, where ℓ+ℓ- is either a μ+μ- or e+e- pair, with a data sample of 657×106 BB̄ pairs collected with the Belle detector at the KEKB e+e- collider. Signal events are reconstructed from a charged or a neutral pion candidate and a pair of oppositely charged electrons or muons. No significant signal is observed and we set an upper limit on the isospin-averaged branching fraction B(B→πℓ+ℓ-)<6.2×10-8 at the 90% confidence level. © 2008 The American Physical Society.
Type
research article
Web of Science ID
WOS:000258636400001
Scopus ID
2-s2.0-47149118691
Authors
Wei, J.-T.
•
Chen, K.-F.
•
Adachi, I.
•
Aihara, H.
•
Arinstein, K.
•
Aulchenko, V.
•
Aushev, T.
•
Bakich, A.M.
•
Balagura, V.
•
Belous, K.
Publication date
2008
Volume
78
Issue
1
Article Number
011101
Peer reviewed
REVIEWED
EPFL units
Available on Infoscience
November 5, 2010
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