Search for the new physics by probing high momentum muons

• Project/Area Number: 23740180
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: Nagoya University
• Principal Investigator: TOMOTO Makoto 名古屋大学, 理学(系)研究科(研究院), 准教授 (80432235)
• Project Period (FY): 2011 – 2013
• Project Status: Completed (Fiscal Year 2013)
• Budget Amount: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000); Fiscal Year 2013: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2012: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2011: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
• Keywords: 素粒子実験 / LHC加速器 / アトラス実験 / μ粒子 / 余剰次元 / LHC-ATLAS実験 / ATLAS実験 / 余剰次元粒子 / 国際研究者交流

Research Abstract

The search for the new physics by probing high momentum muons from proton-proton collision is performed at the LHC-ATLAS experiment which is the highest energy frontier experiment in the world. The achievements of this research are described below.
(1) The installed position of the muon trigger detectors was measured. We figured out that some muon trigger detectors were shifted 5 cm in maximum from the designed position. Our measurement was taken into account in the muon momentum calculation of the muon trigger hardware logic. As a result the resolution of the momentum in the muon trigger was improved.
(2) We looked for the new particles predicted by the minimal universal extra dimension model (mUED), which is the minimal extension of the standard model of the particle physics. The muons with greater than 6GeV momentum were used as a probe of the mUED particles' decay and we excluded the lightest mUED particle mass lighter than 700GeV.

Research Products

• [Journal Article] ATLAS Collaboration, Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC (2012)
  • Author(s): M.Tomoto, et.al
  • Journal Title: Phys. Lett. B Volume: 716 Pages: 1-29
  • Peer Reviewed
• [Journal Article] ATLAS Collaboration, Studies of the performance of the ATLAS detector using cosmic-ray muons (2011)
  • Author(s): M.Tomoto, et.al
  • Journal Title: Eur. Phys. J. C Volume: 71 Issue: 3 Pages: 1593-1593
  • DOI: 10.1140/epjc/s10052-011-1593-6
  • Peer Reviewed
• [Presentation] Inclusive search for squarks and gluinos with the ATLAS detector (2013)
  • Author(s): Ljiljana Morvaj
  • Organizer: 19^<th> International Symposium on Particles, Strings and Cosmology
  • Place of Presentation: 台湾、台北
  • Year and Date: 2013-11-20
  • Invited
• [Presentation] ATLAS 実験におけるトリガー性能向上のためのミューオン検出器の精密アライメント (2013)
  • Author(s): 山内克哉,戸本誠
  • Organizer: 日本物理学会
  • Place of Presentation: 広島大学
  • Year and Date: 2013-09-29
• [Presentation] LHC 8TeV 実験の成果 (2013)
  • Author(s): 戸本誠
  • Organizer: 日本物理学会2013年秋季大会
  • Place of Presentation: 高知大学
  • Year and Date: 2013-09-21
  • Invited
• [Presentation] Search for Minimal Universal Extra Dimension in 8TeV protin-proton collision in the ATLAS detector (2013)
  • Author(s): Ljiljana Morvaj, 戸本誠
  • Place of Presentation: 高知大学
  • Year and Date: 2013-09-21
• [Presentation] Search for supersymmetry with a compressed mass spectrum in events involving soft-lepton, jets and missing transverse momentum at 8TeV with the ATLAS detector (2013)
  • Author(s): Ljiljana Morvaj
  • Organizer: The 2013 European Physical Society Conference on High Energy Physics
  • Place of Presentation: ストックホルム
  • Year and Date: 2013-07-17
• [Presentation] Measurements of the Higgs boson properties with the ATLAS detector (2013)
  • Author(s): 戸本誠
  • Organizer: New Trends in High-Energy Physics
  • Place of Presentation: ウクライナ
  • Invited
• [Presentation] Measurements of the Higgs boson properties with the ATLAS detector (2013)
  • Author(s): Makoto Tomoto
  • Organizer: NEW TRENDS IN HIGH-ENERGY PHYSICS
  • Place of Presentation: ウクライナ、クリミア
  • Invited
• [Presentation] ATLAS実験におけるトリガー性能向上のためのミューオン検出器の精密アライメント (2013)
  • Author(s): 山内 克弥，戸本 誠
  • Organizer: 日本物理学会
  • Place of Presentation: 広島大学
• [Presentation] ATLAS 実験におけるトリガー性能向上のためのミューオン検出器の設置位置測定 (2012)
  • Author(s): 山内克弥、戸本誠
  • Organizer: 日本物理学会
  • Place of Presentation: 京都産業大学
  • Year and Date: 2012-09-14
• [Presentation] 実データに基づいたATLAS レベル1ミューオントリガーシステムのトリガー効率評価 (2012)
  • Author(s): 山内克弥、戸本誠
  • Organizer: 日本物理学会
  • Place of Presentation: 関西学院大学
  • Year and Date: 2012-03-26
• [Presentation] ATLAS実験におけるトリガー性能向上のためのミューオン検出器の設置位置測定 (2012)
  • Author(s): 山内 克弥、戸本 誠
  • Organizer: 日本物理学会
  • Place of Presentation: 京都産業大学
• [Presentation] Inclusive searches for squarks and gluinos with the ATLAS detector
  • Author(s): Ljiljana Morvaj
  • Organizer: 19th Internatinal Symposium on Particles, Strings and Cosmology
  • Place of Presentation: 台湾、台北
  • Invited
• [Presentation] LHC 8 TeV実験の成果
  • Author(s): 戸本 誠
  • Organizer: 日本物理学会2013年秋季大会
  • Place of Presentation: 高知大学
• [Presentation] Search for Minimal Universal Extra Dimensions in 8 TeV proton-proton collisions in the ATLAS detector
  • Author(s): Ljiljana Morvaj
  • Organizer: 日本物理学会2013年秋季大会
  • Place of Presentation: 高知大学
• [Presentation] 実データに基づいたATLASレベル1-ミューオントリガーシステムのトリガー効率評価
  • Author(s): 山内克哉、戸本 誠
  • Organizer: 2012年春の日本物理学会
  • Place of Presentation: 関西学院大学
• [Book] ヒッグス粒子の見つけ方～質量の起源を追う～ (2012)
  • Author(s): 戸本誠, 他
  • Total Pages: 136
  • Publisher: 丸善出版