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Development of the Trigger System for High Luminosity Environments and Verification of Supersymmetry

Research Project

Project/Area Number 17K14284
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Particle/Nuclear/Cosmic ray/Astro physics
Research InstitutionNagoya University

Principal Investigator

Nakahama Yu  名古屋大学, 素粒子宇宙起源研究所, 准教授 (10786180)

Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2018: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2017: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywordsトリガー / 超対称性粒子 / エネルギーフロンティア / ATLAS実験 / 統合トリガー系 / ミューオントリガー / LHC加速器 / 素粒子実験
Outline of Final Research Achievements

As technical achievements for higher luminosities at future high-energy experiments, we developed the ultimate trigger system that can collect any physics events in interests and operate stably. We verified the system for the data-taking at the LHC-ATLAS experiment.
As physics results, we performed two new SUSY searches (1) inclusive search for gluinos using the full Run-2 dataset (139 fb-1) in the most-sensitive channel (all-hadronic final state) with new machine-learning technique and (2) search for top-squarks whose mass is degenerated from the other SUSY particles and thus was not yet explored. An exclusion limit at the 95% confidence level on the mass of the gluino is set at 2.4 TeV/c2.

Academic Significance and Societal Importance of the Research Achievements

次世代エネルギーフロンティア実験のためのデータ収集系において技術的な貢献した。今後の高エネルギー加速器実験における高輝度・高頻度粒子衝突の環境下においても安定動作し、どのような物理事象をも網羅する究極の統合トリガー系を開発した。最新技術マルチスレッドを導入したトリガーを新たに開発し、持続可能なトリガー・データ処理システムを現行実験で実証した。
現行LHC-ATLAS実験Run-2全データで到達可能な全質量域の超対称性粒子探索に決着をつけ、もって素粒子標準理論を超える新物理を実験的に発見するかあるいは理論モデルに厳密な制限を与えた。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (41 results)

All 2020 2019 2018 Other

All Int'l Joint Research (18 results) Journal Article (9 results) (of which Int'l Joint Research: 8 results,  Open Access: 8 results,  Peer Reviewed: 4 results) Presentation (13 results) (of which Int'l Joint Research: 5 results,  Invited: 5 results) Remarks (1 results)

  • [Int'l Joint Research] CERN(スイス)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] LALオルセー/パリサクレー大学(フランス)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] エジンバラ大学/マンチェスター大学/グラスゴー大学(英国)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] アデレード大学(オーストラリア)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] フライブルグ(ドイツ)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research]

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] CERN(スイス)

    • Related Report
      2018 Research-status Report
  • [Int'l Joint Research] LALオルセー/パリ第11大学(フランス)

    • Related Report
      2018 Research-status Report
  • [Int'l Joint Research] エジンバラ大学/マンチェスター大学/グラスゴー大学(英国)

    • Related Report
      2018 Research-status Report
  • [Int'l Joint Research] アデレード大学(オーストラリア)

    • Related Report
      2018 Research-status Report
  • [Int'l Joint Research] フライブルグ大学(ドイツ)

    • Related Report
      2018 Research-status Report
  • [Int'l Joint Research]

    • Related Report
      2018 Research-status Report
  • [Int'l Joint Research] CERN(スイス)

    • Related Report
      2017 Research-status Report
  • [Int'l Joint Research] LALオルセー/パリ第11大学(フランス)

    • Related Report
      2017 Research-status Report
  • [Int'l Joint Research] エジンバラ大学/マンチェスター大学/グラスゴー大学(英国)

    • Related Report
      2017 Research-status Report
  • [Int'l Joint Research] アデレード大学(オーストラリア)

    • Related Report
      2017 Research-status Report
  • [Int'l Joint Research] フライブルグ大学(ドイツ)

    • Related Report
      2017 Research-status Report
  • [Int'l Joint Research]

    • Related Report
      2017 Research-status Report
  • [Journal Article] Performance of the ATLAS muon triggers in Run 22020

    • Author(s)
      The ATLAS collaboration (including Y. Nakahama)
    • Journal Title

      arXiv:hep-ex (submitted to JINST)

      Volume: 2004.13447 Pages: 58-58

    • Related Report
      2019 Annual Research Report
    • Open Access / Int'l Joint Research
  • [Journal Article] Search for squarks and gluinos in final states with jets and missing transverse momentum using 139 fb-1 of sqrt(s)=13 TeV pp collision data with the ATLAS detector2019

    • Author(s)
      The ATLAS collaboration (including Y. Nakahama)
    • Journal Title

      CERN ATLAS conference note

      Volume: 040 Pages: 47-47

    • Related Report
      2019 Annual Research Report
    • Open Access / Int'l Joint Research
  • [Journal Article] Search for top-squark pair production in final states with one lepton, jets, and missing transverse momentum using 36 /fb of √s=13 TeV pp collision data with the ATLAS detector2018

    • Author(s)
      T. Saito et al., The ATLAS Collaboration
    • Journal Title

      Journal of High Energy Physics

      Volume: 2018 Issue: 6 Pages: 108-108

    • DOI

      10.1007/jhep06(2018)108

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Search for squarks and gluinos in final states with jets and missing transverse momentum using 36 /fb of √s=13 TeV pp collision data with the ATLAS detector2018

    • Author(s)
      T. Saito et al., The ATLAS Collaboration
    • Journal Title

      Physical Review D

      Volume: 97 Issue: 11 Pages: 112001-112001

    • DOI

      10.1103/physrevd.97.112001

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] LHC ATLAS実験 最新の物理結果2018

    • Author(s)
      中浜 優
    • Journal Title

      高エネルギーニュース

      Volume: 37 Pages: 1-1

    • Related Report
      2018 Research-status Report
    • Open Access
  • [Journal Article] Trigger Menu in 20172018

    • Author(s)
      The ATLAS Collaboration
    • Journal Title

      CERN public note

      Volume: ATL-DAQ-PUB-2018-002 Pages: 1-1

    • Related Report
      2018 Research-status Report
    • Open Access / Int'l Joint Research
  • [Journal Article] Search for squarks and gluinos in final states with jets and missing transverse momentum using 36 fb-1 of sqrt(s) = 13 TeV pp collision data with the ATLAS detector2018

    • Author(s)
      The ATLAS collaboration
    • Journal Title

      Physical Review D

      Volume: 印刷中

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Search for top-squark pair production in final states with one lepton, jets, and missing transverse momentum using 36 fb-1 of sqrt(s) = 13 TeV pp collision data with the ATLAS detector2018

    • Author(s)
      The ATLAS collaboration
    • Journal Title

      Journal of High Energy Physics

      Volume: 印刷中

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Reinterpretation of searches for supersymmetry in models with variable R-parity-violating coupling strength and long-lived R-hadrons2018

    • Author(s)
      The ATLAS collaboration
    • Journal Title

      ATLAS CONF NOTE

      Volume: 003 Pages: 1-28

    • Related Report
      2017 Research-status Report
    • Open Access / Int'l Joint Research
  • [Presentation] LHC-ATLAS実験Run-3に向けたマルチスレッド対応ミューオントリガーの性能評価2020

    • Author(s)
      脇田萌、中浜優
    • Organizer
      日本物理学会2020年年次大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] LHC-ATLAS実験Run2における0レプトン終状態のグルイーノ探索結果2019

    • Author(s)
      中浜優
    • Organizer
      日本物理学会2019年秋季大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Innovations from Basic Research - High Energy Physics2019

    • Author(s)
      中浜優
    • Organizer
      Tsukuba Conference 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Status and prospect of physics at LHC2019

    • Author(s)
      Yu Nakahama
    • Organizer
      4th KMI International Symposium (KMI 2019)
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] LHC-ATLAS実験Run-3に向けた新しいマルチスレッド対応ミューオントリガー系の性能評価2019

    • Author(s)
      林田翔太, 中浜優 他ATLAS日本トリガーグループ
    • Organizer
      日本物理学会第74回年次大会
    • Related Report
      2018 Research-status Report
  • [Presentation] LHC-ATLAS実験Run-3に向けた細分化カロリメータ情報を用いたレベル1タウ粒子トリガーの性能評価2019

    • Author(s)
      江角悠, 中浜優 他ATLAS日本トリガーグループ
    • Organizer
      日本物理学会第74回年次大会
    • Related Report
      2018 Research-status Report
  • [Presentation] Searches for direct production of 3rd generation squarks2018

    • Author(s)
      Yu Nakahama for the ATLAS and CMS Collaborations
    • Organizer
      The Sixth Annual Conference on Large Hadron Collider Physics (LHCP2018)
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] ATLAS SUSY search using machine learning and sophisticated statistical fit2018

    • Author(s)
      Yu Nakahama
    • Organizer
      2018 Joint workshop of TYL/FJPPL and FKPPL
    • Related Report
      2018 Research-status Report 2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] LHC-ATLAS実験Run-3に向けたマルチスレッディング技術のミューオントリガーメニューへの実装2018

    • Author(s)
      林田翔太, 中浜優 他ATLAS日本トリガーグループ
    • Organizer
      日本物理学会2018年秋季大会
    • Related Report
      2018 Research-status Report
  • [Presentation] LHC-ATLAS実験Run-3に向けた細分化カロリメータ情報を用いたレベル1タウトリガーアルゴリズムの開発2018

    • Author(s)
      江角悠, 中浜優 他ATLAS日本トリガーグループ
    • Organizer
      日本物理学会2018年秋季大会
    • Related Report
      2018 Research-status Report
  • [Presentation] 高輝度LHC-ATLAS実験におけるグルイーノとスクォークの探索感度推定2018

    • Author(s)
      脇田萌, 中浜優 他ATLAS SUSY Upgrade Group
    • Organizer
      日本物理学会2018年秋季大会
    • Related Report
      2018 Research-status Report
  • [Presentation] Searches for direct production of 3rd generation squarks2018

    • Author(s)
      Yu Nakahama for the ATLAS and CMS Collaborations
    • Organizer
      The Sixth Annual Conference on Large Hadron Collider Physics
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] LHC-ATLAS実験Run-3に向けたマルチスレッディング実装フレームワークでのハイレベルミューオントリガー開発2018

    • Author(s)
      林田翔太, 中浜優
    • Organizer
      日本物理学会
    • Related Report
      2017 Research-status Report
  • [Remarks] 名古屋大学高エネルギー素粒子物理学研究室 webページ

    • URL

      https://www.hepl.phys.nagoya-u.ac.jp

    • Related Report
      2019 Annual Research Report

URL: 

Published: 2017-04-28   Modified: 2022-02-22  

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