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Observation of a new DsJ meson in B+-->D0D0K+ decays |
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| Authors: | Brodzicka J Palka H Adachi I Aihara H Aulchenko V Bakich A M Barberio E Bay A Bedny I Bitenc U Bondar A Bracko M Browder T E Chang M-C Chang P Chen A Chen W T Cheon B G Chiang C-C Chistov R Cho I-S Choi S-K Choi Y Dalseno J Danilov M Dash M Drutskoy A Eidelman S Gabyshev N Go A Gokhroo G Golob B Ha H Haba J Hara T Hayasaka K Hayashii H Hazumi M Heffernan D Hoshi Y Hou W-S Hyun H J Iijima T Ikado K Inami K Ishikawa A Ishino H Itoh R Iwasaki M Iwasaki Y Joshi N J Kah D H Kang J H Kawai H Kawasaki T Kichimi H Kim H O Kim S K Kim Y J Kinoshita K Korpar S Krokovny P Kumar R Kuo C C Kwon Y-J |
| Institution: | High Energy Accelerator Research Organization (KEK), Tsukuba. |
| Abstract: | We report the observation of a new DsJ meson produced in B+-->D0DsJ-->D0D0K+. This state has a mass of M=2708+/-9(-10)(+11) MeV/c2, a width Gamma=108+/-23(-31)(+36) MeV/c2 and a 1- spin-parity. The statistical significance of this observation is 8.4 sigma. The results are based on an analysis of 449 x 10(6) BB events collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. |
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