Charmed particle analysis with one million neutrino interactions

对一百万个中微子相互作用进行迷人粒子分析

• 批准号: 19540281
• 负责人: SATO Osamu
• 金额: $ 1.5万
• 依托单位: Nagoya University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2007
• 资助国家: 日本
• 起止时间: 2007 至 2009
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-19540281/
• 关键词: チャーム粒子生成; チャームペンタクォーク; 素粒子実験; ニュートリノ; チャーム粒子; ハイパー核

The CHORUS experiment stored one million neutrino interactions in nuclear emulsion target. While the past analysis for neutrino oscillation and charm analysis such for short life time particle detection was just based only 0.2 million events. The limitation of the analyzed event comes from limitation of scanning power and inefficiency due to target tracker prediction accuracy tail.Then the aim of this study is locating of 1 million neutrino events by faster scanning machine and deal about 20,000 charmed particle associated events.The R&D of improving track finding efficiency and reducing background tracks in the large area scanning like level of 10cmx10cm was done.And the parameters of track goodness are tuned to keep signal background level and track finding efficiency and the track pick up for event location was done.All neutrino event location in the CHORUS detector and neutrino events with charmed particle will be followed.

CHORUS实验在核乳胶靶中储存了一百万个中微子相互作用。而过去对中微子振荡的分析和对短寿命粒子探测的粲分析仅基于20万个事件。分析事件的局限性来自于扫描功率的限制和目标跟踪器预测精度尾部导致的效率低下。因此，本研究的目标是用更快的扫描机器定位100万个中微子事件，处理约20个，000魅力粒子相关事件。R&在10cm × 10cm水平的大面积扫描中，对提高航迹搜索效率和减少背景航迹进行了研究，并对航迹优度参数进行了调整，在保持信号本底水平和寻轨效率的前提下，完成了事件定位的径迹提取，跟踪了CHORUS探测器中所有中微子事件的位置和带有粲粒子的中微子事件。

项目成果

Leading order analysis of neutrino induced dimuon events in the CHORUS experiment

• DOI: 10.1016/j.nuclphysb.2008.02.013
• 发表时间: 2008-04
• 期刊: Nuclear Physics
• 作者: The Chorus Collaboration

Emulsion sheet doublets as interface trackers for the OPERA experiment

• DOI: 10.1088/1748-0221/3/07/p07005
• 发表时间: 2008-07-01
• 期刊: JOURNAL OF INSTRUMENTATION
• 影响因子: 1.3
• 作者: Anokhina, A.;Aoki, S.;Zimmermannn, R.
• 通讯作者: Zimmermannn, R.

Final results on nu(mu)-nu(tau) oscillation from the CHORUS experiment

CHORUS 实验中 nu(mu)-nu(tau) 振荡的最终结果

• 发表时间: 2008
• 期刊: Nucl. Phys B793
• 作者: Masako Asano;Mitsuhiro Kato;E. Eskut et.al.
• 通讯作者: E. Eskut et.al.

ニュートリノ振動実験OPERAのタウニュートリノ反応探索

中微子振荡实验 OPERA 中的 Tau 中微子反应搜索

• 发表时间: 2010
• 作者: T.Aaltonen;S.H.Kim;T.Yoshida;他603名;佐藤修
• 通讯作者: 佐藤修

The analysis of interface emulsion detector for the OPERA experiment in JAPAN scanning facility.

日本扫描设备OPERA实验界面乳液检测器分析。

• DOI: 10.1088/1748-0221/5/04/p04009
• 发表时间: 2010
• 期刊: JINST
• 作者: T.Shimoda;他;永井雄也;石渡 聡;松本浩典;Hiroshige Shiga;山崎高幸;T. Fukuda et.al .
• 通讯作者: T. Fukuda et.al .