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Observation of the color-suppressed decay B( 0)-->D(0)pi(0) |
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| Authors: | Abe K Abe K Abe R Adachi I Ahn Byoung Sup Aihara H Akatsu M Asano Y Aso T Aulchenko V Aushev T Bakich A M Banas E Behari S Behera P K Bondar A Bozek A Browder T E Casey B C K Chang P Chao Y Chen K F Cheon B G Chistov R Choi S-K Choi Y Dong L Y Dragic J Drutskoy A Eidelman S Enari Y Fang F Fujii H Fukushima M Gabyshev N Garmash A Gershon T Gordon A Gotow K Guo R Haba J Hamasaki H Handa F Hara K Hara T Hastings N C Hayashii H Hazumi M Heenan E M Higuchi I Higuchi T Hirano H Hojo T Hokuue T Hoshina K Hou S R Hou W-S Hsu S-C Huang H-C Igarashi Y Iijima T Ikeda H Inami K Ishikawa A Ishino H Itoh R |
| Affiliation: | High Energy Accelerator Research Organization (KEK), Tsukuba. |
| Abstract: | We report the first observation of color-suppressed B( 0)-->D(0)pi(0), D(*0)pi(0), D0eta, and D0omega decays, and evidence for B( 0)-->D(*0)eta and D(*0)omega. The branching fractions are B(B( 0)-->D0pi(0)) = (3.1 +/- 0.4 +/- 0.5)x10(-4), B(B( 0) -->D(*0)pi(0)) = (2.7(+0.8+0.5)(-0.7-0.6))x10(-4), B(B( 0) --> D0eta) = (1.4(+0.5)(-0.4) +/- 0.3)x10(-4), B(B( 0) --> D0omega) = (1.8 +/- 0.5(+0.4)(-0.3))x10(-4), and we set 90% confidence level upper limits of B(B( 0) --> D(*0)eta)<4.6 x 10(-4) and B(B( 0)-->D(*0)omega)<7.9 x 10(-4). The analysis is based on a data sample of 21.3 fb(-1) collected at the Upsilon(4S) resonance by the Belle detector at the KEKB e(+)e(-) collider. |
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