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Search for supersymmetric particles in big data at LHC-ATLAS experiment

Research Project

Project/Area Number 17K14268
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Particle/Nuclear/Cosmic ray/Astro physics
Research InstitutionThe University of Tokyo

Principal Investigator

Saito Tomoyuki  東京大学, 素粒子物理国際研究センター, 助教 (50749629)

Project Period (FY) 2017-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2017: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywords素粒子標準模型 / 超対称性 / LHC加速器 / ATLAS実験 / データ収集システム / エレクトロニクス / FPGA / DAQ / 素粒子 / 陽子陽子衝突 / トリガーシステム / 宇宙の始まり / LHC / ATLAS / トリガ / 素粒子実験 / 加速器
Outline of Final Research Achievements

In this grant, we worked to search supersymmetric particles in proton-proton collisions using a large dataset at Large Hadron Collider (LHC) by development of an advanced data aquisition system, where many different detectors were complementarily integrated. We developed the new data aquisition system to suppress huge background particles in real time process so that the system bandwidth is able to be used efficiently for data of interest. We searched the gluinos and electroweak gauginos with masses of O(100-1000) GeV in the large dataset using new techniques and got new understandings of the supersymmetric particles. These results brings important information to the supersymmetric models and to next step for searchs on new physics beyond the Standard Model.

Academic Significance and Societal Importance of the Research Achievements

本研究の成果として、最新のエレクトロニクスの技術を駆使し先進的なトリガーシステムの構築に成功した。高速データ通信技術と大規模回路実装技術を組み合わせることで、リアルタイムの大規模データ処理を実現した。これは将来の加速器実験の大規模データ収集システム系の基礎となる重要な成果である。
また未開拓であった100 GeVからTeVスケールの質量を持つ超対称性粒子の理解を大きく進めることができた。この新たに得た知見は素粒子標準模型を超える新しい物理理論の今後の研究指針となる重要な成果であり、学術的意義は大きい。

Report

(6 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (54 results)

All 2021 2020 2019 2018 2017 Other

All Int'l Joint Research (25 results) Journal Article (18 results) (of which Int'l Joint Research: 17 results,  Peer Reviewed: 17 results,  Open Access: 18 results,  Acknowledgement Compliant: 1 results) Presentation (5 results) (of which Int'l Joint Research: 5 results,  Invited: 3 results) Remarks (6 results)

  • [Int'l Joint Research] CERN(スイス)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] Harvard University/University of Massachusetts(米国)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] National Institute for Nuclear Physics(イタリア)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] Weizmann Institute of Science(イスラエル)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] Juiz de Fora UF(ブラジル)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] Harvard University/University of Massachusetts(米国)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] INFN(イタリア)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] CERN(スイス)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] Juiz de Fora UF(ブラジル)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] Weizmann Institute of Science(イスラエル)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] Harvard University/University of Massachusetts(米国)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] Weizmann Institute of Science(イスラエル)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] National Institute for Nuclear Physics(イタリア)

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

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] Juiz de Fora UF(ブラジル)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] University of Illinois Urbana-Champaign/Harvard University/University of Massachusetts(米国)

    • Related Report
      2018 Research-status Report
  • [Int'l Joint Research] Weizmann Institute of Science(イスラエル)

    • Related Report
      2018 Research-status Report
  • [Int'l Joint Research] National Institute for Nuclear Physics(イタリア)

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

    • Related Report
      2018 Research-status Report
  • [Int'l Joint Research] Juiz de Fora UF(ブラジル)

    • Related Report
      2018 Research-status Report
  • [Int'l Joint Research] イリノイ大学/ハーバード大学/カリフォルニア大学(米国)

    • Related Report
      2017 Research-status Report
  • [Int'l Joint Research] Weizmann Institute of Science(イスラエル)

    • Related Report
      2017 Research-status Report
  • [Int'l Joint Research] ミュンヘン大学(ドイツ)

    • Related Report
      2017 Research-status Report
  • [Int'l Joint Research] CERN(スイス)

    • Related Report
      2017 Research-status Report
  • [Int'l Joint Research] オックスフォード大学(英国)

    • Related Report
      2017 Research-status Report
  • [Journal Article] Search for charginos and neutralinos in final states with two boosted hadronically decaying bosons and missing transverse momentum in pp collisions at s = √13 TeV with the ATLAS detector2021

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

      Physical Review D

      Volume: 104 Issue: 11 Pages: 112010-112010

    • DOI

      10.1103/physrevd.104.112010

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Search for chargino-neutralino pair production in final states with three leptons and missing transverse momentum in √s = 13 TeV pp collisions with the ATLAS detector2021

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

      The European Physical Journal C

      Volume: 81 Issue: 12 Pages: 1118-1118

    • DOI

      10.1140/epjc/s10052-021-09749-7

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Search for supersymmetry in events with four or more charged leptons in 139 fb-1 of √s = 13 TeV pp collisions with the ATLAS detector2021

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

      Journal of High Energy Physics

      Volume: 2021 Issue: 7 Pages: 167-167

    • DOI

      10.1007/jhep07(2021)167

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Search for R-parity-violating supersymmetry in a final state containing leptons and many jets with the ATLAS experiment using √s = 13 TeV proton-proton collision data2021

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

      The European Physical Journal C

      Volume: 81 Issue: 11 Pages: 1023-1023

    • DOI

      10.1140/epjc/s10052-021-09761-x

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Search for squarks and gluinos in final states with one isolated lepton, jets, and missing transverse momentum at √s =13 TeV with the ATLAS detector2021

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

      The European Physical Journal C

      Volume: 81 Issue: 7 Pages: 600-600

    • DOI

      10.1140/epjc/s10052-021-09344-w

    • Related Report
      2021 Annual Research 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 139 /fb of √s = 13 TeV pp collision data with the ATLAS detector2021

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

      Journal of High Energy Physics

      Volume: 2021 Issue: 2 Pages: 1-63

    • DOI

      10.1007/jhep02(2021)143

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Searches for electroweak production of supersymmetric particles with compressed mass spectra in √s=13 TeV pp collisions with the ATLAS detector2020

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

      Physical Review D

      Volume: 101 Issue: 5 Pages: 1-46

    • DOI

      10.1103/physrevd.101.052005

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Constraints on mediator-based dark matter and scalar dark energy models using √s = 13 TeV pp collision data collected by the ATLAS detector2019

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

      Journal of High Energy Physics

      Volume: 2019 Issue: 5

    • DOI

      10.1007/jhep05(2019)142

    • Related Report
      2019 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] 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 electroweak production of supersymmetric states in scenarios with compressed mass spectra at √s=13 TeV with the ATLAS detector2018

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

      Physical Review D

      Volume: 97 Issue: 5 Pages: 1-35

    • DOI

      10.1103/physrevd.97.052010

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Simulation of the ATLAS New Small Wheel Trigger2018

    • Author(s)
      Tomoyuki Saito, on behalf of The ATLAS Collaboration
    • Journal Title

      Proceedings of Science

      Volume: 印刷中

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Search for squarks and gluinos in events with an isolated lepton, jets, and missing transverse momentum at √ s = 13 TeV with the ATLAS detector2017

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

      Physical Review D

      Volume: 96 Issue: 11 Pages: 112010-112010

    • DOI

      10.1103/physrevd.96.112010

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] LHC ATLAS実験の最新状況2017

    • Author(s)
      音野暎俊、齋藤智之
    • Journal Title

      高エネルギーニュース

      Volume: 36 Pages: 1-8

    • Related Report
      2017 Research-status Report
    • Open Access
  • [Journal Article] Search for new phenomena with large jet multiplicities and missing transverse momentum using large-radius jets and flavour-tagging at ATLAS in 13 TeV pp collisions2017

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

      Journal of High Energy Physics

      Volume: 12 Issue: 12 Pages: 1-50

    • DOI

      10.1007/jhep12(2017)034

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Search for supersymmetry in events with b-tagged jets and missing transverse momentum in pp collisions at √s = 13 TeV with the ATLAS detector2017

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

      Journal of High Energy Physics

      Volume: 11 Issue: 11

    • DOI

      10.1007/jhep11(2017)195

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Search for supersymmetry in final states with two same-sign or three leptons and jets using 36 fb-1 of √13 TeV pp collision data with the ATLAS detector2017

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

      Journal of High Energy Physics

      Volume: 09 Issue: 9

    • DOI

      10.1007/jhep09(2017)084

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Search for new phenomena in events containing a same-flavour opposite-sign dilepton pair,jets,and large missing transverse momentum in sqrt(s)=13 TeV pp collisions with the ATLAS detector2017

    • Author(s)
      M.Aaboud,S.Asai,J.Tanaka,O.Jinnouchi,et al.
    • Journal Title

      Eur. Phys. J. C

      Volume: 77 Issue: 3 Pages: 144-144

    • DOI

      10.1140/epjc/s10052-017-4700-5

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Presentation] Searches for supersymmetry with the ATLAS detector2021

    • Author(s)
      Tomoyuki Saito, on behalf of the ATLAS Collaboration
    • Organizer
      Lomonosov conference on elementary particle physics
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Dark Matter Search at ATLAS2019

    • Author(s)
      Tomoyuki Saito
    • Organizer
      KUBEC International Workshop on Dark Matter Searches 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] LHC-ATLAS Run2 data analysis2019

    • Author(s)
      Tomoyuki Saito
    • Organizer
      Joint Kavli IPMU - ICEPP Workshop on Future Directions for HEP
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Simulation of the ATLAS New Small Wheel Trigger2017

    • Author(s)
      Tomoyuki Saito
    • Organizer
      Topical Workshop on Electronics for Particle Physics (TWEPP)
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] SUSY strong production in leptonic final state with ATLAS2017

    • Author(s)
      Tomoyuki Saito
    • Organizer
      5th Conference on Large Hadron Collider Physics (LHCP)
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Remarks] AGAINST COVID-19 コロナ禍を経て、研究は新天地へ

    • URL

      https://www.icepp.s.u-tokyo.ac.jp/what/focus/06.html

    • Related Report
      2021 Annual Research Report
  • [Remarks] researchmap: 齋藤智之

    • URL

      https://researchmap.jp/tomoyuki.saito

    • Related Report
      2021 Annual Research Report
  • [Remarks] 東京大学素粒子物理国際研究センター・研究成果

    • URL

      https://www.icepp.s.u-tokyo.ac.jp/research/paper.html

    • Related Report
      2019 Research-status Report
  • [Remarks] Search for gluinos using 139 fb/1 with the ATLAS

    • URL

      https://cds.cern.ch/record/2686254

    • Related Report
      2019 Research-status Report
  • [Remarks] 2018 ATLAS Outstanding Achievement Awards

    • URL

      https://atlas.cern/updates/atlas-news/outstanding-achievement-awards-2018

    • Related Report
      2018 Research-status Report
  • [Remarks] 「ATLAS Outstanding Achievement Award 2018」を受賞

    • URL

      https://www.icepp.s.u-tokyo.ac.jp/information/20181012.html

    • Related Report
      2018 Research-status Report

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Published: 2017-04-28   Modified: 2023-01-30  

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