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A Search for Dark Matter

Research Project

Project/Area Number 24244025
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Research Field Particle/Nuclear/Cosmic ray/Astro physics
Research InstitutionThe University of Tokyo

Principal Investigator

SUZUKI Yoichiro  東京大学, カブリ数物連携宇宙研究機構, 特任教授 (70144425)

Co-Investigator(Kenkyū-buntansha) MORIYAMA Shigetaka  東京大学, 宇宙線研究所, 准教授 (50313044)
Co-Investigator(Renkei-kenkyūsha) NAKAHATA Masayuki  東京大学, 宇宙線研究所, 教授 (70192672)
KISHIMOTO Yasuhiro  東京大学, 宇宙線研究所, 准教授 (30374911)
YAMASHITA Masaki  東京大学, 宇宙線研究所, 特任准教授 (10504574)
MARTENS Kai  東京大学, 国際高等研究所・カブリ数物連携宇宙研究機構, 特任准教授 (20535025)
TAKEDA Atsushi  東京大学, 宇宙線研究所, 助教 (40401286)
ABE Kou  東京大学, 宇宙線研究所, 助教 (30401285)
SEKIYA Hiroyuki  東京大学, 宇宙線研究所, 助教 (90402768)
OGAWA Hiroshi  東京大学, 宇宙線研究所, 特任助教 (20374910)
KOBAYASHI Kazuyoshi  東京大学, 宇宙線研究所, 特任助教 (70466861)
HIRAIDE Katsuki  東京大学, 宇宙線研究所, 助教 (10584261)
LIU Jing  東京大学, 国際高等研究所・カブリ数物連携宇宙研究機構, 特任研究員 (10573024)
YANG Byeongsu  東京大学, 宇宙線研究所, 特任研究員 (10626055)
NAKAMURA Shogo  横浜国立大学, 工学研究科, 准教授 (50212098)
NISHIJIMA Kyoji  東海大学, 理学部, 教授 (40202238)
ITOW Yoshitaka  名古屋大学, 太陽地球環境研究所, 教授 (50272521)
MASUDA Kimiaki  名古屋大学, 太陽地球環境研究所, 准教授 (40173744)
TAKEUCHI Yasuo  神戸大学, 理学研究科, 教授 (60272522)
MIUCHI Kentaro  神戸大学, 理学研究科, 准教授 (80362440)
FUKUDA Yoshiyuki  宮城教育大学, 教育学部, 教授 (40272520)
TASAKA Shigeki  岐阜大学, 教授 (60155059)
Project Period (FY) 2012-04-01 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥47,970,000 (Direct Cost: ¥36,900,000、Indirect Cost: ¥11,070,000)
Fiscal Year 2014: ¥9,100,000 (Direct Cost: ¥7,000,000、Indirect Cost: ¥2,100,000)
Fiscal Year 2013: ¥8,970,000 (Direct Cost: ¥6,900,000、Indirect Cost: ¥2,070,000)
Fiscal Year 2012: ¥29,900,000 (Direct Cost: ¥23,000,000、Indirect Cost: ¥6,900,000)
Keywordsダークマター / キセノン検出器 / 低バックグラウンド実験 / 原子核反跳 / 温かいダークマター / 2重電子捕獲 / 暗黒物質 / 液体キセノン / 季節変動 / スーパーWIMPs / XMASS / WIMP / アクシオン / 低バックグラウンド / 低温検出器
Outline of Final Research Achievements

We know that there exists unknown matter in the universe called dark matter that amounts 5 to 6 times more than the ordinary matter. However, we do not know what they are. There are varieties of candidates for dark matter. Some interact with the ordinary matter and kick out the nucleus and some emit gamma rays when they hit the target material of the detector. Our detector, using 835 kg of liquid xenon as a target material has a characteristics of having very low energy threshold and the ability to detect e/gamma events as well as nuclear recoils. Therefore we are able to make high sensitive searches for low mass dark matter and a new type of dark matter that emits gamma rays. After the observation lasted more than one year, we could not find dark matter, but set very stringent limits for those candidates. We have also demonstrated that we are able to make the detector bigger and be able to achieve much higher sensitive searches in future.

Report

(4 results)
  • 2014 Annual Research Report   Final Research Report ( PDF )
  • 2013 Annual Research Report
  • 2012 Annual Research Report
  • Research Products

    (17 results)

All 2014 2013 2012 Other

All Journal Article (5 results) (of which Peer Reviewed: 5 results,  Open Access: 2 results,  Acknowledgement Compliant: 2 results) Presentation (10 results) (of which Invited: 3 results) Book (1 results) Remarks (1 results)

  • [Journal Article] Search for inelastic WIMP nucleon scattering on 129Xe in data from the XMASS-I detector2014

    • Author(s)
      H. Uchida et al.
    • Journal Title

      Prg. Theor. Exp. Phys.

      Volume: 2014 Issue: 6 Pages: 63C01-0

    • DOI

      10.1093/ptep/ptu064

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Search for Bosonic Super-WIMPs with the XMASS-I Detetor2014

    • Author(s)
      K. Abe et al.
    • Journal Title

      Phys. Rev. Lett.

      Volume: 113 Issue: 12 Pages: 121301-121301

    • DOI

      10.1103/physrevlett.113.121301

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] XMASS detector, Nuclear Instruments and Methods2013

    • Author(s)
      K.Abe, (14 名), A.Takeda
    • Journal Title

      Physics Research Section A

      Volume: 716 Pages: 78-85

    • DOI

      10.1016/j.nima.2013.03.059

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Search for solar axions in XMASS, a large liquid-xenon detector2013

    • Author(s)
      K. Abe et al.
    • Journal Title

      Physics Letters B

      Volume: 724 Issue: 1-3 Pages: 46-50

    • DOI

      10.1016/j.physletb.2013.05.060

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Low mass WIMP search with XMASS2013

    • Author(s)
      K.Abe, …(14 名 ), A.Takeda
    • Journal Title

      Physics Letters B

      Volume: 719 Issue: 1-3 Pages: 78-82

    • DOI

      10.1016/j.physletb.2013.01.001

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Presentation] 改修XMASS実験装置と暗黒物質探索2014

    • Author(s)
      鈴木 洋一郎
    • Organizer
      日本物理学会
    • Place of Presentation
      東海大学湘南校舎
    • Related Report
      2013 Annual Research Report
  • [Presentation] XMASS実験:次世代XMASS1.52014

    • Author(s)
      森山 茂栄
    • Organizer
      日本物理学会
    • Place of Presentation
      東海大学湘南校舎
    • Related Report
      2013 Annual Research Report
  • [Presentation] XMASS, present and future development2014

    • Author(s)
      森山 茂栄
    • Organizer
      DM2014
    • Place of Presentation
      Los Angels, USA.
    • Related Report
      2013 Annual Research Report
    • Invited
  • [Presentation] 暗黒物質の直接観測の現状2013

    • Author(s)
      森山 茂栄
    • Organizer
      日本物理学会シンポジウム
    • Place of Presentation
      高知大学
    • Related Report
      2013 Annual Research Report
    • Invited
  • [Presentation] XMASS2013

    • Author(s)
      森山 茂栄
    • Organizer
      TAUP2014
    • Place of Presentation
      Asilomar, California, USA
    • Related Report
      2013 Annual Research Report
  • [Presentation] XMASS experiment2013

    • Author(s)
      鈴木 洋一郎
    • Organizer
      Windows of the Universe
    • Place of Presentation
      Quy Nhon, Vietnam
    • Related Report
      2013 Annual Research Report
    • Invited
  • [Presentation] 太陽アクシオン及びBosonic Super-WIMPs探索2013

    • Author(s)
      森山茂栄
    • Organizer
      日本物理学会
    • Place of Presentation
      広島大学(東広島市)
    • Related Report
      2012 Annual Research Report
  • [Presentation] Direct dark matter experiments and XMASS2012

    • Author(s)
      S. Moriyama
    • Organizer
      The 4th International Symposium on Neutrinos and Dark Matter in Nuclear Physics (NDM2012)
    • Place of Presentation
      Nara, Japan
    • Related Report
      2012 Annual Research Report
  • [Presentation] XMASS experiment2012

    • Author(s)
      Y. Suzuki
    • Organizer
      9th International Conference: Identification of Dark Matter (IDM2012)
    • Place of Presentation
      Chicago, USA
    • Related Report
      2012 Annual Research Report
  • [Presentation] XMASS実験:現状2012

    • Author(s)
      森山茂栄
    • Organizer
      日本物理学会
    • Place of Presentation
      京都産業大学(京都市)
    • Related Report
      2012 Annual Research Report
  • [Book] 暗黒物質とはなにか2013

    • Author(s)
      鈴木 洋一郎
    • Total Pages
      201
    • Publisher
      冬幻舎
    • Related Report
      2013 Annual Research Report
  • [Remarks] XMASS, Dark Matter Search Experiment

    • URL

      http://www-sk.icrr.u-tokyo.ac.jp/xmass/index.html

    • Related Report
      2013 Annual Research Report

URL: 

Published: 2013-05-15   Modified: 2019-07-29  

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