Search for $B^0 \to \ell^{+} \ell^{-}$ at BELLE - INSPIRE

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Search for $B^0 \to \ell^{+} \ell^{-}$ at BELLE

Belle

Collaboration

Sep, 2003

8 pages

Published in:

Phys.Rev.D 68 (2003) 111101

e-Print:

hep-ex/0309069 [hep-ex]

DOI:

10.1103/PhysRevD.68.111101

PDG:

{{\mathit B}^{0}}

\rightarrow

{{\mathit e}^{+}}{{\mathit e}^{-}}

Report number:

BELLE-PREPRINT-2003-12,
KEK-PREPRINT-2003-44

Experiments:

KEK-BF-BELLE

View in:

ADS Abstract Service

reference search65 citations

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Abstract:

We report the results of a search for the decay B^0 -> e^+ e^-, mu^+ mu^- and e^{+-} mu^{-+} based on an analysis of 78 fb^{-1} of data collected by the Belle detector at KEKB. No candidate events have been found. Upper limits on the branching fractions are calculated at the 90% confidence level: B(B^0 -> e^+ e^-) < 1.9 x 10^{-7}, B(B^0 -> mu^+ mu^-) < 1.6 x 10^{-7}, and B(B^0 -> e^{+-} mu^{-+})< 1.7 x 10^{-7}. A limit on the Pati-Salam leptoquark mass M_{LQ}> 46 TeV/c^2 is obtained at the 90% confidence level.

13.20.He
14.40.Nd
electron positron: colliding beams
electron positron: annihilation
Upsilon(10570): electroproduction
B: pair production
B0: leptonic decay
B0: branching ratio
upper limit
leptoquark: mass

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Figures(0)

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