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| 題名: | Study of e(+)e(-) -> pi(+)pi(-) J/psi and Observation of a Charged Charmoniumlike State at Belle |
| 作者: | 陳鎰鋒;Yuan, C. Z.;Adachi, I.;Aihara, H.;Asner, D. M.;Aushev, T.;Bakich, A. M.;Bala, A.;Bhardwaj, V.;Bondar, A.;Bonvicini, G.;Bračko, M.;Chang, P.;Cho, K.;Chobanova, V.;Choi, S.-K.;Choi, Y.;Doležal, Z.;Feindt, M.;Ferber, T.;Ganguly, S.;Gillard, R.;Haba, J.;Hayasaka, K.;Hayashii, H.;Hoshi, Y.;Hsiung, Y. B.;Iijima, T.;Joffe, D.;Kah, D. H.;Kang, J. H.;Kawasaki, T.;Kiesling, C.;Kim, J. B.;Kim, K. T.;Kinoshita, K.;Klucar, J.;Ko, B. R.;Križan, P.;Krokovny, P.;Lange, J. S.;Lee, S.-H.;Li, J.;Liu, C.;Lukin, P.;Matvienko, D.;Miyata, H.;Mohanty, G. B.;Nakano, E.;Nakazawa, H.;Natkaniec, Z.;Nayak, M.;Nisar, N. K.;Okuno, S.;Olsen, S. L.;Ostrowicz, W.;Pakhlov, P.;Pedlar, T. K.;Pestotnik, R.;Piilonen, L. E.;Ritter, M.;Röhrken, M.;Rostomyan, A.;Saito, T.;Sandilya, S.;Sanuki, T.;Savinov, V.;Schneider, O.;Seidl, R.;Semmler, D.;Senyo, K.;Seon, O.;Sevior, M. E.;Shiu, J.-G.;Simon, F.;Sokolov, A.;Solovieva, E.;Sumihama, M.;Tamponi, U.;Tatishvili, G.;Teramoto, Y.;Trabelsi, K.;Uchida, M.;Uehara, S.;Uno, S.;Vahsen, S. E.;Van Hulse, C.;Varvell, K. E.;Vorobyev, V.;Wagner, M. N.;Wang, C. H.;Wang, M.-Z.;Wang, X. L.;Watanabe, M.;Watanabe, Y.;Yamaoka, J.;Yook, Y.;Yusa, Y.;Zhang, Z. P.;Zhilich, V.;Zupanc, A. |
| 貢獻者: | 理學院物理學系 |
| 日期: | 2013-06-17 |
| 上傳時間: | 2026-04-23 14:29:47 (UTC+8) |
| 出版者: | American Physical Society;United States: American Physical Society |
| 摘要: | 摘要： The cross section for ee+ e- → π+ π- J/ψ between 3.8 and 5.5 GeV is measured with a 967 fb(-1) data sample collected by the Belle detector at or near the Υ(nS) (n = 1,2,…,5) resonances. The Y(4260) state is observed, and its resonance parameters are determined. In addition, an excess of π+ π- J/ψ production around 4 GeV is observed. This feature can be described by a Breit-Wigner parametrization with properties that are consistent with the Y(4008) state that was previously reported by Belle. In a study of Y(4260) → π+ π- J/ψ decays, a structure is observed in the M(π(±)J/ψ) mass spectrum with 5.2σ significance, with mass M = (3894.5 ± 6.6 ± 4.5) MeV/c2 and width Γ = (63 ± 24 ± 26) MeV/c2, where the errors are statistical and systematic, respectively. This structure can be interpreted as a new charged charmoniumlike state.
其他題名： Phys Rev Lett
出版者： United States: American Physical Society
出版日期： 2013-06-21
出處： Physical review letters, 2013-06, Vol.110 (25), p.252002, Article 252002
資源來源： American Physical Society (APS)
識別號： ISSN: 0031-9007
識別號： ISSN: 1079-7114
識別號： EISSN: 1079-7114
識別號： DOI: 10.1103/PhysRevLett.110.252002
識別號： PMID: 23829730 |
| 顯示於類別: | [物理學系] 期刊論文
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