2021年12月15日
Study of e+e− → ϒ(1S, 2S) η and e+e− → ϒ(1S) η′ at sqrt{s} = 10.866 GeV with the Belle detector
Physical Review D
- 巻
- 104
- 号
- 11
- 記述言語
- 英語
- 掲載種別
- 研究論文（学術雑誌）
- DOI
- 10.1103/physrevd.104.112006
- 出版者・発行元
- American Physical Society (APS)
We report the first observation of the processes e(+)e(-) -> Upsilon(1S, 2S)eta at root s = 10.866 GeV, with significance exceeding 10 sigma for both processes. The measured Born cross sections are sigma(e(+)e(-) -> Upsilon(2S)eta) = 2.07 +/- 0.21 +/- 0.19 pb, and sigma(e(+)e(-) -> Upsilon(1S)eta) = 0.42 +/- 0.08 +/- 0.04 pb. We also set the upper limit on the cross section of the process e(+)e(-) -> Upsilon(1S)eta to be sigma(e(+)e(-) -> Upsilon(1S)eta') < 0.037 pb at 90% C.L. The results are obtained with the data sample collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider in the energy range from 10.63 to 11.02 GeV.
- リンク情報
-
- DOI
- https://doi.org/10.1103/physrevd.104.112006
- Web of Science
- https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000738796900003&DestApp=WOS_CPL
- URL
- https://link.aps.org/article/10.1103/PhysRevD.104.112006
- URL
- http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevD.104.112006/fulltext
- ID情報
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- DOI : 10.1103/physrevd.104.112006
- ISSN : 2470-0010
- eISSN : 2470-0029
- Web of Science ID : WOS:000738796900003