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Search for long-lived gluino with the ATLAS detector

Research Project

Project/Area Number 15K17653
Research Category

Grant-in-Aid for Young Scientists (B)

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

Principal Investigator

Otono Hidetoshi  九州大学, 先端素粒子物理研究センター, 助教 (20648034)

Project Period (FY) 2015-04-01 – 2017-03-31
Project Status Completed (Fiscal Year 2016)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2016: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2015: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywords長寿命グルイーノ / 半導体検出器
Outline of Final Research Achievements

The LHC restarted operation in 2015 at a new centre-of-mass energy of 13 TeV. A target of this research is to discover long-lived gluinos with the ATLAS detector, which are predicted from the Supersymmetric Standard Model incorporating the Higgs boson with a mass of 125 GeV. The SemiConductor Tracker plays an essential role for this search, then we achieved to exploit the potential in 2015 as well as 2016. We also developped dedicated algorithms for long-lived gluinos. As a result, no events are observed in the signal region, and a gluino mass below approximately 2000 GeV is excluded at 95% confidence level for a lifetime from 0.01 ns to 10 ns.

Report

(3 results)
  • 2016 Annual Research Report   Final Research Report ( PDF )
  • 2015 Research-status Report
  • Research Products

    (11 results)

All 2017 2016 2015

All Journal Article (6 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 6 results,  Open Access: 5 results,  Acknowledgement Compliant: 1 results) Presentation (5 results) (of which Int'l Joint Research: 2 results)

  • [Journal Article] Cornering Compressed Gluino at the LHC2017

    • Author(s)
      Natsumi Nagata, Hidetoshi Otono, Satoshi Shirai
    • Journal Title

      JHEP

      Volume: 1703 Issue: 3

    • DOI

      10.1007/jhep03(2017)025

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Searches for New Physics in Unconventional Signatures at ATLAS2017

    • Author(s)
      H. Otono on be half of the ATLAS collaboration
    • Journal Title

      Proceedings of the 51st Rencontres de Moriond on QCD and High Energy Interactions

      Volume: -

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Probing Bino-Gluino Coannihilation at the LHC2015

    • Author(s)
      N. Nagata, H. Otono, S. Shirai
    • Journal Title

      Phys. Lett. B

      Volume: 748 Pages: 24-29

    • DOI

      10.1016/j.physletb.2015.06.044

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Probing Bino-Gluino Coannihilation at the LHC2015

    • Author(s)
      N. Nagata, H. Otono, S. Shirai
    • Journal Title

      JHEP

      Volume: 1510 Issue: 10 Pages: 086-086

    • DOI

      10.1007/jhep10(2015)086

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] New probes for bino dark matter with coannihilation at the LHC2015

    • Author(s)
      H. Otono
    • Journal Title

      Proceeding of Science

      Volume: EPS-HEP2015 Pages: 1-6

    • Related Report
      2015 Research-status Report
    • Peer Reviewed
  • [Journal Article] Search for massive, long-lived particles using multitrack displaced vertices or displaced lepton pairs in pp collisions at sqrt(s) = 8 TeV with the ATLAS detector2015

    • Author(s)
      G. Aad et al. [ATLAS Collaboration]
    • Journal Title

      Phys. Rev. D

      Volume: 92 Issue: 7 Pages: 072004-072004

    • DOI

      10.1103/physrevd.92.072004

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] LHCにおけるSUSYダークマターの新しい探索提案2016

    • Author(s)
      音野瑛俊
    • Organizer
      日本物理学会2016年秋季大会
    • Place of Presentation
      宮崎大学
    • Year and Date
      2016-09-21
    • Related Report
      2016 Annual Research Report
  • [Presentation] Searches for New Physics in Unconventional Signatures at ATLAS2016

    • Author(s)
      H. Otono
    • Organizer
      51st Rencontres de Moriond on QCD and High Energy Interactions
    • Place of Presentation
      La Thuile (Italy)
    • Year and Date
      2016-03-12
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research
  • [Presentation] LHC/ATLAS現状2015

    • Author(s)
      音野瑛俊
    • Organizer
      新学術領域研究会 テラスケール2015 先端加速器LHCが切り拓くテ ラスケールの素粒子物理学
    • Place of Presentation
      東京(日本)
    • Year and Date
      2015-12-21
    • Related Report
      2015 Research-status Report
  • [Presentation] LHC における SUSY ダークマターの 新しい探索提案2015

    • Author(s)
      音野瑛俊
    • Organizer
      日本物理学会 2015年秋季大会
    • Place of Presentation
      大阪(日本)
    • Year and Date
      2015-09-25
    • Related Report
      2015 Research-status Report
  • [Presentation] New probes for bino dark matter with coannihilation at the LHC2015

    • Author(s)
      H. Otono
    • Organizer
      The European Physical Society Conference on High Energy Physics 2015 (EPS-HEP)
    • Place of Presentation
      ウィーン(オーストリア)
    • Year and Date
      2015-07-22
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research

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Published: 2015-04-16   Modified: 2018-03-22  

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