Research and development of a detector for a double-beta decay search with very high sensitivity at KamLAND

• Project/Area Number: 21244025
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: Tohoku University
• Principal Investigator: SHIRAI Junpei 東北大学, ニュートリノ科学研究センター, 准教授 (90171032)
• Co-Investigator(Renkei-kenkyūsha): SUEKANE Fumihiko 東北大学, ニュートリノ科学研究センター, 准教授 (10196678)
• Project Period (FY): 2009 – 2012
• Project Status: Completed (Fiscal Year 2012)
• Budget Amount: ¥44,200,000 (Direct Cost: ¥34,000,000、Indirect Cost: ¥10,200,000); Fiscal Year 2012: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000); Fiscal Year 2011: ¥7,800,000 (Direct Cost: ¥6,000,000、Indirect Cost: ¥1,800,000); Fiscal Year 2010: ¥12,350,000 (Direct Cost: ¥9,500,000、Indirect Cost: ¥2,850,000); Fiscal Year 2009: ¥22,230,000 (Direct Cost: ¥17,100,000、Indirect Cost: ¥5,130,000)
• Keywords: 素粒子実験 / ニュートリノ / カムランド / 2重ベータ崩壊 / 液体シンチレータ / キセノン / ２重ベータ崩壊

Research Abstract

The study made a research and development of a detector for neutrino-less double-beta decays of nuclei which would occur if the neutrino itself is the anti-neutrino of its own. Using the world's largest liquid scintillator detector KamLAND 136Xe-resolved liquid scintillator and a mini-balloon filled with the liquid was developed and installed at the center of the detector. The experiment provided the most stringent limit and strongly disfavored the discovery claim of a 76Ge experiment.

Research Products

• [Journal Article] Limit on Neutrinoless ββ Decay of ^<136>Xe from the First Phase of KamLAND-Zen and Comparison with the Positive Claim in ^<76>Ge (2013)
  • Author(s): A. Gando, et al. (The KamLAND-Zen Collaboration)
  • Journal Title: Physicsl Review Letters Volume: 110 Issue: 6 Pages: 62502-62502
  • DOI: 10.1103/physrevlett.110.062502
  • Peer Reviewed
• [Journal Article] カムランド禅実験によるXe^^<136>核のニュートリノレス二重ベータ崩壊の探索:第1フェーズの結果と今 (2013)
  • Author(s): 白井淳平、山田悟
  • Journal Title: 原子核研究 Volume: 第50巻2号 Pages: 50-66
  • Peer Reviewed
• [Journal Article] Limits on Majoron-emitting double-β decays of ^<136>Xe in the KamLAND-Zen experiment (2012)
  • Author(s): A. Gando, et al. (The KamLAND-Zen Collaboration)
  • Journal Title: Physical Review C Volume: 86 Issue: 2 Pages: 1-4
  • DOI: 10.1103/physrevc.86.021601
  • Peer Reviewed
• [Journal Article] Measurement of the Double-Beta Decay Half-life of ^<136>Xe in KamLAND-Zen (2012)
  • Author(s): A.Gando, et al
  • Journal Title: Physical Review C Volume: (受理済み) Issue: 4 Pages: 45504-45504
  • DOI: 10.1103/physrevc.85.045504
  • Peer Reviewed
• [Journal Article] Search for extraterrestrial anti neutrino sources with KamLAND detector (2012)
  • Author(s): A.Gando, et al
  • Journal Title: Astrophysical Journal Volume: 745 Issue: 2 Pages: 193-200
  • DOI: 10.1088/0004-637x/745/2/193
  • Peer Reviewed
• [Journal Article] Partial radiogenic heat model for Earth revealed by geoneutrino measurement (2011)
  • Author(s): A.Gando, et al
  • Journal Title: Nature Geoscience Volume: 4 Issue: 9 Pages: 647-651
  • DOI: 10.1038/ngeo1205
  • Peer Reviewed
• [Journal Article] Measurement of the ^8B Solar Neutrino Flux with the KamLAND Liquid Scintillator Detector (2011)
  • Author(s): S.Abe, et.al., The KamLAND Collaboration
  • Journal Title: Phys.Rev.C Volume: 84 Issue: 3 Pages: 35804-35804
  • DOI: 10.1103/physrevc.84.035804
  • Peer Reviewed
• [Journal Article] Constraints on $￥theta_{13}$ from a three-flavor oscillation analysis of reactor antineutrinos at KamLAND (2011)
  • Author(s): A.Gando, et al
  • Journal Title: Physical Review D Volume: 83 Issue: 5
  • DOI: 10.1103/physrevd.83.052002
  • Peer Reviewed
• [Journal Article] Measurement of the 8B solar neutrino flux with the KamLAND liquid scintillator detector (2011)
  • Author(s): S.Abe, et al., The KamLAND Collaboration
  • Journal Title: Physical Review C Volume: 84 Issue: 2
  • DOI: 10.1103/physrevc.81.025807
  • Peer Reviewed
• [Journal Article] Measurement of the 8B solar neutrino flux with the KamLAND liquid scintillator detector (2011)
  • Author(s): The KamLAND Collaboration (S.Abe, et al)
  • Journal Title: Physical Review C Volume: 84
  • Peer Reviewed
• [Journal Article] Constraints on $\theta_{13}$ from A Three-Flavor Oscillation Analysis of Reactor Antineutrinos at KamLAND. (2011)
  • Author(s): A.Gando, et al., KamLAND Collaboration
  • Journal Title: Physical Review D Volume: 83
  • Peer Reviewed
• [Journal Article] Production of Radioactive Isotopes through Cosmic Muon Spallation in KamLAND. (2010)
  • Author(s): S.Abe, et al., KamLAND Collaboration
  • Journal Title: Physical Review C Volume: 81
  • Peer Reviewed
• [Journal Article] Production of Radioactive Isotopes through Cosmic Muon Spallation in KamLAND (2010)
  • Author(s): S.Abe, et.al., KamLAND Collaboration
  • Journal Title: Physical Review C 81
  • Peer Reviewed
• [Presentation] KamLAND-Zen: Status and Future (2012)
  • Author(s): 白井淳平
  • Organizer: Neutrino Oscillation Workshop 2012
  • Place of Presentation: Otranto, Italy
  • Year and Date: 2012-09-10
• [Presentation] KamLAND-Zen (2011)
  • Author(s): 白井淳平
  • Organizer: KEK現象論研究会(KEK-PH2012)
  • Place of Presentation: 高エネルギー加速器研究機構、つくば市
  • Year and Date: 2011-02-28
• [Presentation] KamLAND-Zen (2011)
  • Author(s): 白井淳平
  • Organizer: KEK現象論研究会(KEK-PH2012)
  • Place of Presentation: 高エネルギー加速器研究機構
  • Year and Date: 2011-02-28
• [Presentation] KamLAND-Zen (2010)
  • Author(s): 白井淳平
  • Organizer: 二重ベータ崩壊研究懇談会
  • Place of Presentation: 岩沼市
  • Year and Date: 2010-12-17
• [Presentation] KamLAND-Zen for the Neutrino-less Double Beta Decay of Xe^^<136> (2010)
  • Author(s): 白井淳平
  • Organizer: the 3rd GCOE International Symposium "Weaving Science Web beyond Particle- Matter Hierarchy"
  • Place of Presentation: 東北大学
  • Year and Date: 2010-02-17
• [Presentation] KamLAND-Zen for the Neutrino-less Double Beta Decay of 1367Xe (2010)
  • Author(s): 白井淳平
  • Organizer: the 3rd GCOE International Symposium "Weaving Science Web beyond Particle-Matter Hierarchy"
  • Place of Presentation: 東北大学
  • Year and Date: 2010-02-17
• [Presentation] Reactor, Geo and Solar Neutrinos. (2009)
  • Author(s): 白井淳平
  • Organizer: the 21st Rencontres de Blois
  • Place of Presentation: ブロワ市、フランス
  • Year and Date: 2009-06-25
• [Presentation] Reactor, Geo and Solar neutrinos (2009)
  • Author(s): 白井淳平
  • Organizer: XXIst Recontres de Blois, Windows on the Univers
  • Place of Presentation: Chateau de Blois, sVallee de la Loire, France.
• [Presentation] KamLAND-Zen: Status and Future
  • Author(s): 白井淳平
  • Organizer: Neutrino Oscillation Workshop 2012
  • Place of Presentation: オトラント（イタリア）
• [Book] (2011)
  • Author(s): 末包文彦、白井淳平、湯田春雄、共立出版
  • Total Pages: 398
  • Publisher: 素粒子・原子核物理学の基礎-実験から統一理論まで-
• [Book] 素粒子・原子核物理学の基礎～実験から統一理論まで～ (2011)
  • Author(s): 末包文彦, 白井淳平, 湯田春雄(共訳)
  • Publisher: 共立出版株式会社
• [Remarks]
  • URL: http://www.awa.tohoku.ac.jp/kamland/
• [Remarks]
  • URL: http://www.awa.tohoku.ac.p/kamland/