Search for $B \to π\ell^+\ell^-$ Decays at Belle

Details Search for $B \to π\ell^+\ell^-$ Decays at Belle Search for $B \to π\ell^+\ell^-$ Decays at Belle

2008-04-23

arxiv.org/abs/0804.3656v2

Phys.Rev.D78:011101,2008

Physics

High Energy Physics

High Energy Physics - Experiment

8 pages, 3 figures, accepted by PRD(RC)

Scientific paper

10.1103/PhysRevD.78.011101

We present a search for the B-> pi e^+ e^- and B-> pi \mu^+ \mu^- decays, with a data sample of 657 million BBbar 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 the upper limit on the isospin-averaged branching fraction BF(B -> \pi \ell^+\ell^-) < 6.2x10^-8 at the 90% confidence level.

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