Experimental Study of Hyperon-Hyperon Interaction by Doubly Strange Nuclei

双奇异核超子-超子相互作用的实验研究

基本信息

批准号：
14340069
负责人：
NAKAZAWA Kazuma
金额：
$ 8.9万
依托单位：
Gifu University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2002
资助国家：
日本
起止时间：
2002 至 2004
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-14340069/
关键词：
Doubly Strange Nuclei Double Hypernuclei Emulsion NAGARA event Weak Decay Automated speedy scanning system Brookhaven National Lab.J-PARC ダブルストレンジネス KEK-E373 エマルションハイブリッド実験全自動探索システム

项目摘要

For these three years, all the scanning was finished, and the scanning speed arrived at it than former 4times. As a result, an event to show an sequential decay topology of candidate double hypernucleus reached 7 examples and we succeeded in raising statistics for the past dozens of years to several times. Although it was unfortunate that the events which would be interpreted uniquely couldn't be found besides NAGARA event, it was an big result that we could know the useful information for theoretical calculation even by such events which would present multiple interpretations.On the other hand, we succeeded in discovery of the event which probably showed the emission and decay of a Σ^-hyperon from Ξ^-absorption point at a last stage of the scanning. The emission of Σ^-hyperon provides information for the mixing of ΞN⇔ΛΛ⇔ΣΣ and also gives us knowledge relating to H-dibaryon staying at the key position of the mixing. In addition, that is the first information about the weak interaction with double-strangeness, e. g. ΞN→ΣN, ΛΛ→ΣN. We are doing detailed analysis, now, and going to announce its result in the 2nd meeting by physics societies of Japan and USA held in September, this year.Furthermore, the proposed experiment giving us high statistics to Brookhaven Natl. Lab. (BNL) was accepted in the program advisory committee by speedup of the scanning. It would be proved that the successful improvement of scanning technology by this research was admitted. It was a big result we could suggest new experiments which would be available in near future in many domestic and foreign meetings based on that acceptance. These results were known by 12 articles in academic journals and 14 oral presentations in workshop (including 12 Int'l conferences).

在这三年中，所有的扫描都完成了，扫描速度比以前的4Times达到了扫描速度。结果，一个显示候选人双颈椎的顺序衰减拓扑的事件达到了7个例子，我们成功地提高了数十年的统计数据，数十年。 Although it was unfortunate that the events which would be interpreted uniquely could't be found besides NAGARA event, it was an big result that we could know the useful information for theoretical calculation even by such events which would present multiple interpretations.On the other hand, we succeeded in discovery of the event which probably showed the emission and decay of a Σ^-hyperon from Ξ^-absorption point at a last stage of the scanning. σ^-Hyperon的排放提供了ξn⇔λλ⇔σς的混合的信息，还为我们提供了与H-Dibaryon保持在混合关键位置的知识。此外，这是关于与双重纠纷相互作用的第一个信息，例如ξn→σn，λλ→σn。我们现在正在进行详细的分析，并将在9月举行的日本物理学会和美国举行的第二次会议上宣布其结果。Furthermore，拟议的实验为我们提供了对Brookhaven Natl的高度统计数据。实验室。（BNL）在计划咨询委员会中被扫描的加速委员会接受。可以证明，这项研究成功地改善了扫描技术。这是一个很大的结果，我们可以提出新的实验，这些实验将在许多家庭和国外会议上根据该接受。这些结果通过学术期刊的12篇文章和研讨会中的14篇口头演示而得知（包括12个国际会议）。