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Observation of B0-->pi0pi0 |
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| Authors: | Chao Y Chang P Abe K Abe K Aihara H Akai K Akatsu M Akemoto M Asano Y Aushev T Bahinipati S Bakich A M Bay A Bedny I Bitenc U Bizjak I Bondar A Bozek A Bracko M Brodzicka J Browder T E Chen A Chen K-F Chen W T Cheon B G Chistov R Choi S-K Choi Y Chuvikov A Dalseno J Danilov M Dash M Dragic J Drutskoy A Eidelman S Eiges V Enari Y Fang F Flanagan J Fratina S Furukawa K Gabyshev N Garmash A Gershon T Gokhroo G Golob B Haba J Hastings N C Hayasaka K Hayashii H Hazumi M Hinz L Hokuue T Hoshi Y Hou S Hou W-S Hsiung Y B Iijima T Ikeda H Imoto A Inami K Ishikawa A Itoh R Iwasaki M Iwasaki Y Kang J H |
| Affiliation: | Department of Physics, National Taiwan University, Taipei. |
| Abstract: | We report the observation of the decay B0-->pi(0)pi(0), using a 253 fb(-1) data sample collected at the Upsilon(4S) resonance with the Belle detector at the KEKB e(+)e(-) collider. The measured branching fraction is B(B0-->pi(0)pi(0))=(2.3(+0.4+0.2)(-0.5-0.3))x10(-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. |
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