オクノ ショウジ   Okuno Shoji
  奥野 祥二
   所属   神奈川大学  工学部 情報システム創成学科
   職種   助教
言語種別 日本語
発行・発表の年月 2004/01
形態種別 学術雑誌
査読 査読あり
標題 Measurements of the DsJ Resonance Properties
執筆形態 共著
掲載誌名 Phys. Rev. Lett. 92, 012002 (2004) (6pages)
著者・共著者 Y. Mikami, S. Okuno et al. [The Belle Collaboration]
概要 We report measurements of the properties of the D+sJ(2317) and D+sJ(2457) resonances produced in continuum e+e- annihilation near §qrt{s} = 10.6 GeV. The analysis is based on an 86.9 fb-1 data sample collected with the Belle detector at KEKB. We determine the masses to be M(D+sJ(2317)) = 2317.2±0.5(stat)±0.9(syst) MeV/c2 and M(D+sJ(2457)) = 2456.5±1.3(stat)±1.3(syst) MeV/c2. We observe the radiative decay mode D+sJ(2457) → D+sγ and the dipion decay mode D+sJ(2457) → D+sπ+π- and determine their branching fractions. No corresponding decays are observed for the DsJ(2317) state. These results are consistent with the spin-parity assignments of 0+ for the DsJ(2317) and 1+ for the DsJ(2457).
,BELLE-74.