Observation of a new DsJ meson in B+-->D0D0K+ decays. J Brodzicka , H Palka , I Adachi , H Aihara , V Aulchenko , A M Bakich , E Barberio , A Bay , I Bedny , U Bitenc , A Bondar , M Bracko , T E Browder , M-C Chang , P Chang , A Chen , W T Chen , B G Cheon , C-C Chiang , R Chistov , I-S Cho , S-K Choi , Y Choi , J Dalseno , M Danilov , M Dash , A Drutskoy , S Eidelman , N Gabyshev , A Go , G Gokhroo , B Golob , H Ha , J Haba , T Hara , K Hayasaka , H Hayashii , M Hazumi , D Heffernan , Y Hoshi , W-S Hou , H J Hyun , T Iijima , K Ikado , K Inami , A Ishikawa , H Ishino , R Itoh , M Iwasaki , Y Iwasaki , N J Joshi , D H Kah , J H Kang , H Kawai , T Kawasaki , H Kichimi , H O Kim , S K Kim , Y J Kim , K Kinoshita , S Korpar , P Krokovny , R Kumar , C C Kuo , Y-J Kwon , J S Lange , J S Lee , M J Lee , S E Lee , T Lesiak , A Limosani , D Liventsev , F Mandl , S McOnie , T Medvedeva , W Mitaroff , K Miyabayashi , H Miyake , H Miyata , R Mizuk , T Mori , Y Nagasaka , E Nakano , M Nakao , Z Natkaniec , S Nishida , O Nitoh , S Noguchi , T Nozaki , S Ogawa , T Ohshima , S Okuno , S L Olsen , H Ozaki , P Pakhlov , G Pakhlova , C W Park , H Park , R Pestotnik , L E Piilonen , M Rozanska , Y Sakai , O Schneider , R Seidl , A Sekiya , K Senyo , M E Sevior , M Shapkin , C P Shen , H Shibuya , J-G Shiu , J B Singh , A Sokolov , A Somov , S Stanic , M Staric , T Sumiyoshi , F Takasaki , K Tamai , M Tanaka , G N Taylor , Y Teramoto , I Tikhomirov , S Uehara , K Ueno , T Uglov , Y Unno , S Uno , P Urquijo , G Varner , K Vervink , S Villa , A Vinokurova , C C Wang , C H Wang , M-Z Wang , P Wang , X L Wang , Y Watanabe , R Wedd , E Won , B D Yabsley , A Yamaguchi , Y Yamashita , M Yamauchi , C Z Yuan , Y Yusa , C C Zhang , Z P Zhang , V Zhilich , V Zhulanov , A Zupanc , N Zwahlen Physical review letters（2008）
摘要
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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