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Observation of the decay B0-->lambda+cp |
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| Authors: | Gabyshev N Kichimi H Abe K Abe K Abe R Abe T Adachi I Aihara H Akatsu M Asano Y Aso T Aulchenko V Aushev T Bakich A M Ban Y Banas E Bay A Bedny I Bizjak I Bondar A Bozek A Bracko M Brodzicka J Browder T E Casey B C K Chang M-C Chang P Chao Y Chen K-F Cheon B G Chistov R Choi S-K Choi Y Choi Y K Danilov M Dong L Y Dragic J Drutskoy A Eidelman S Eiges V Enari Y Fang F Fukunaga C Garmash A Gershon T Golob B Haba J Hagner C Handa F Hara T Hasuko K Hayashii H Hazumi M Higuchi I Hinz L Hojo T Hokuue T Hoshi Y Hou W-S Hsiung Y B Huang H-C Igaki T Igarashi Y Iijima T Inami K Ishikawa A Itoh R |
| Affiliation: | High Energy Accelerator Research Organization (KEK), Tsukuba. |
| Abstract: | We report the measurement of the charmed baryonic decay B(0)-->Lambda(+)(c)p with a branching fraction of (2.19(+0.56)(-0.49)+/-0.32+/-0.57)x10(-5) and a statistical significance of 5.8 sigma. The errors are statistical, systematic, and the error of the Lambda(+)(c)-->pK(-)pi(+) decay branching fraction. This is the first observation of a two-body baryonic B decay. The analysis is based on 78.2 fb(-1) of data accumulated at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric e(+)e(-) collider. |
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