2014年12月16日
Evidence of (1S) →j /ψ+χc1 and search for double-charmonium production in (1S) and (2S) decays
Physical Review D - Particles, Fields, Gravitation and Cosmology
- 巻
- 90
- 号
- 11
- 開始ページ
- 112008-1
- 終了ページ
- 112008-9
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1103/PhysRevD.90.112008
© 2014 American Physical Society. Using data samples of 102×106 (1S) and 158×106 (2S) events collected with the Belle detector, a first experimental search has been made for double-charmonium production in the exclusive decays (1S,2S)→J/ψ(ψ′)+X, where X=ηc, χcJ(J=0,1,2), ηc(2S), X(3940), and X(4160). No significant signal is observed in the spectra of the mass recoiling against the reconstructed J/ψ or ψ′ except for the evidence of χc1 production with a significance of 4.6σ for (1S)→J/ψ+χc1. The measured branching fraction B((1S)→J/ψ+χc1) is [3.90±1.21(stat)±0.23(syst)]×10-6. The 90% C.L. upper limits on the branching fractions of the other modes having a significance of less than 3σ are determined. These results are consistent with theoretical calculations using the nonrelativistic QCD factorization approach.
- リンク情報
-
- DOI
- https://doi.org/10.1103/PhysRevD.90.112008
- Scopus
- https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84919459145&origin=inward 本文へのリンクあり
- Scopus Citedby
- https://www.scopus.com/inward/citedby.uri?partnerID=HzOxMe3b&scp=84919459145&origin=inward
- URL
- https://link.aps.org/doi/10.1103/PhysRevD.90.112008
- ID情報
-
- DOI : 10.1103/PhysRevD.90.112008
- ISSN : 1550-7998
- eISSN : 1550-2368
- SCOPUS ID : 84919459145