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オクノ ショウジ
Okuno Shoji 奥野 祥二 所属 神奈川大学 情報学部 システム数理学科 職種 助教 |
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| 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. |
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