Observation of $B^0 \to \pi^0 \pi^0$ - INSPIRE

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Observation of $B^0 \to \pi^0 \pi^0$

Belle

Collaboration

Aug, 2004

9 pages

Published in:

Phys.Rev.Lett. 94 (2005) 181803

e-Print:

hep-ex/0408101 [hep-ex]

DOI:

10.1103/PhysRevLett.94.181803

PDG:

{{\mathit B}^{0}}

\rightarrow

{{\mathit \pi}^{0}}{{\mathit \pi}^{0}}

Experiments:

KEK-BF-BELLE

View in:

ADS Abstract Service

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Abstract:

We report the first observation of the decay B0->pi0pi0, using a 253/fb data sample collected at the Upsilon(4S) resonance with the Belle detector at the KEKB e+e- collider. The measured branching fraction is BF(B0->pi0pi0) = {2.32 +0.4-0.5(stat) +0.2-0.3(syst)} x 10^-6, with a significance of 5.8 standard deviations including systematic uncertainties. We also make the first measurement of the direct CP violating asymmetry in this mode.

11.30.Er
14.40.Nd
12.15.Hh
13.25.Hw
B mesons
meson hadronic decay
CP invariance
electron positron: colliding beams
electron positron: annihilation
Upsilon(10570): electroproduction

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Figures(0)

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