Search for a doubly charged bound state in inclusive decays and via direct production in collisions at = 10.520, 10.580, and 10.867 GeV

=10.520, 10.580および10.867GeVの電子-陽電子衝突からの直接生成との崩壊における2重荷電束縛状態の探索

Li, Y.*; 谷田聖 ; Belle Collaboration*; 他205名*

Li, Y.*; Tanida, Kiyoshi; Belle Collaboration*; 205 of others*

We report the results of a first search for a doubly-charged bound state, denoted the $R^{++}$ , in and inclusive decays and via direct production in collisions at = 10.520, 10.580, and 10.867 GeV. The search uses data accumulated with the Belle detector at the KEKB asymmetric-energy collider. No significant signals are observed in the $D^{+}D_{s}^{*+}$ invariant-mass spectra of all studied modes. The 90% credibility level upper limits on their product branching fractions in and inclusive decays ( ${cal B}(Upsilon(1S,2S) to R^{++} + {rm anything}) times {cal B}(R^{++} to D^{+} D_{s}^{*+})$ ), and the product values of Born cross section and branching fraction in collisions ( $sigma(e^+e^- to R^{++} + {rm anything}) times {cal B}(R^{++} to D^{+} D_{s}^{*+})$ ) at = 10.520, 10.580, and 10.867 GeV under different assumptions of $R^{++}$ masses varying from 4.13 to 4.17 GeV/, and widths varying from 0 to 5 MeV are obtained.

発表言語	:	English
掲載資料名	:	Physical Review D
巻	:	102
号	:	11
ページ数	:	p.112001_1 - 112001_14
発行年月	:	2020/12
発表会議名	:
開催年月	:
開催都市	:
開催国	:
キーワード	:	Hadron spectroscopy

特許データ	:
PDF	:	AA2021-0363.pdf:1.76MB

論文URL	:	https://doi.org/10.1103/PhysRevD.102.112001
研究データの公開先DOI	:	本成果にかかわる研究データのリンクです。
使用施設	:
広報プレスリリース	:
論文解説 (JAEA R&D Navigator)	:
受委託・共同研究相手機関	:	高エネルギー加速器研究機構

Access	:	- Accesses
Web of Science® Times Cited Count	:	被引用回数：評価・統計等のため最新の被引用回数を確認したい場合は、直接Web of Science®をご確認ください。 http://www.webofknowledge.com/wos
InCites™	:	パーセンタイル：45.41 分野：Astronomy & Astrophysics
Altmetrics	:

登録番号 : AA20210363
抄録集掲載番号 : 50000394
論文投稿番号 : 25145

[CLARIVATE ANALYTICS], [WEB OF SCIENCE], [HIGHLY CITED PAPER & CUP LOGO] and [HOT PAPER & FIRE LOGO] are trademarks of Clarivate Analytics, and/or its affiliated company or companies, and used herein by permission and/or license.