Observation of B0→π0π0

We report the observation of the decay B0→π0π0, using a 253fb-1 data sample collected at the Υ(4S) resonance with the Belle detector at the KEKB e+e- collider. The measured branching fraction is B(B0→π0π0)= (2.3-0.5-0.3+0.4+0.2)×10-6, with a significance of 5.8 standard deviations including systematic uncertainties. We also make a measurement of the direct CP violating asymmetry in this mode. © 2005 The American Physical Society.


Published in:
Physical Review Letters, 94, 18, null
Year:
2005
Other identifiers:
Scopus: 2-s2.0-27144446815
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 Record created 2010-11-05, last modified 2018-01-28


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