High sensitive search for majorana neutrino

• Project/Area Number: 25707014
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Partial Multi-year Fund
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: Tohoku University
• Principal Investigator: Ishidoshiro Koji 東北大学, ニュートリノ科学研究センター, 助教 (20634504)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥24,570,000 (Direct Cost: ¥18,900,000、Indirect Cost: ¥5,670,000); Fiscal Year 2015: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000); Fiscal Year 2014: ¥8,970,000 (Direct Cost: ¥6,900,000、Indirect Cost: ¥2,070,000); Fiscal Year 2013: ¥11,050,000 (Direct Cost: ¥8,500,000、Indirect Cost: ¥2,550,000)
• Keywords: ニュートリノ / マヨラナ / ２重ベータ崩壊 / マヨラナ性 / カムランド / マヨナラ性

Outline of Final Research Achievements

Majorana neutrinos could play the central role in explaining the origin of our matter-dominated universe and light neutrino mass. Neutrinoless-double-beta decay is only unique scheme to study Majorana neutrino. We have developed several scheme to improve KamLAND-Zen sentivity. KamLAND-Zen is one of the experiments to search for neutrinoless-double-beta decay. We experimentally demonstrated two unique ideas to reduce backgrounds; scintillating balloon and imaging camera.

Research Products

• [Journal Article] Search for double-beta decay of 136Xe to excited states of 136Ba with the KamLAND-Zen experiment (2016)
  • Author(s): K. Asakura, A. Gando, Y. Gando, T. Hachiya, S. Hayashida, H. Ikeda, K. Inoue, K. Ishidoshiro, T. Ishikawa, S. Ishio, M. Koga, S. Matsuda, T. Mitsui, D. Motoki, K. Nakamura, S. Obara, M. Otani, T. Oura, I. Shimizu, Y. Shirahata, et al.
  • Journal Title: Nuclear Physics A Volume: 946 Pages: 171-181
  • DOI: 10.1016/j.nuclphysa.2015.11.011
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] KamLAND Sensitivity to Neutrinos from Pre-Supernova Stars (2016)
  • Author(s): K. Asakura, A. Gando, Y. Gando, T. Hachiya, S. Hayashida, H. Ikeda, K. Inoue, K. Ishidoshiro, T. Ishikawa, S. Ishio, M. Koga, S. Matsuda, T. Mitsui, D. Motoki, K. Nakamura, S. Obara, T. Oura, I. Shimizu, Y. Shirahata, J. Shirai,K. et al.
  • Journal Title: The Astrophysical Journal Volume: 818 Issue: 1 Pages: 91-91
  • DOI: 10.3847/0004-637x/818/1/91
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Study of electron anti-neutrinos associated with gamma-ray bursts using KamLAND (2015)
  • Author(s): K. Asakura, A. Gando, Y. Gando, T. Hachiya, S. Hayashida, H. Ikeda, K. Inoue, K. Ishidoshiro, T. Ishikawa, S. Ishio, M. Koga, S. Matsuda, T. Mitsui, D. Motoki, K. Nakamura, S. Obara, Y. Oki, T. Oura, I. Shimizu, Y. Shirahata, et al.
  • Journal Title: The Astrophysical Journal Volume: 806 Issue: 1 Pages: 87-87
  • DOI: 10.1088/0004-637x/806/1/87
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Pre-supernova Neutrino Emissions from ONe Cores in the Progenitors of Core-collapse Supernovae: Are They Distinguishable from Those of Fe Cores? (2015)
  • Author(s): Kato, Chinami; Delfan Azari, Milad; Yamada, Shoichi; Takahashi, Koh; Umeda, Hideyuki; Yoshida, Takashi; Ishidoshiro, Koji
  • Journal Title: The Astrophysical Journal Volume: 808 Issue: 2 Pages: 168-168
  • DOI: 10.1088/0004-637x/808/2/168
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] 7Be solar neutrino measurement with KamLAND (2015)
  • Author(s): A. Gando, Y. Gando, H. Hanakago, H. Ikeda, K. Inoue, K. Ishidoshiro, H. Ishikawa, Y. Kishimoto, M. Koga, R. Matsuda, S. Matsuda, T. Mitsui, D. Motoki, K. Nakajima, K. Nakamura, A. Obata, A. Oki, Y. Oki, M. Otani, I. Shimizu, et al.
  • Journal Title: Physical Review C Volume: 92 Issue: 5 Pages: 055808-055808
  • DOI: 10.1103/physrevc.92.055808
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Search for the proton decay mode p→nubar K+ with KamLAND (2015)
  • Author(s): K. Asakura, A. Gando, Y. Gando, T. Hachiya, S. Hayashida, H. Ikeda, K. Inoue, K. Ishidoshiro, T. Ishikawa, S. Ishio, M. Koga, R. Matsuda, S. Matsuda, T. Mitsui, D. Motoki, K. Nakamura, S. Obara1, Y. Oki, T. Oura, I. Shimizu, et al.
  • Journal Title: Physical Review D Volume: 92 Issue: 5 Pages: 0520006-0520006
  • DOI: 10.1103/physrevd.92.052006
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Reactor on-off antineutrino measurement with KamLAND (2013)
  • Author(s): A. Gando, H. Yoshida, et al. (The KamLAND Collaboration, 44名省略)
  • Journal Title: Physical Review D Volume: 88 Issue: 3 Pages: 33001-33001
  • DOI: 10.1103/physrevd.88.033001
  • Peer Reviewed
• [Presentation] イメージング検出器を用いた液体シンチレータ中の粒子識別へ向けた研究 (2016)
  • Author(s): 高井貴行
  • Organizer: 日本物理学会 第71回年次大会
  • Place of Presentation: 東北学院大学(宮城県仙台市)
  • Year and Date: 2016-03-20
• [Presentation] 大型液体シンチレータ検出器による超新星ニュートリノ研究の可能性 (2016)
  • Author(s): 石徹白晃治
  • Organizer: 日本天文学会2016年春季年会
  • Place of Presentation: 首都大学東京(東京都八王子市)
  • Year and Date: 2016-03-16
• [Presentation] Revealing the history of the universe with underground particle and nuclear research (2015)
  • Author(s): K. Ishidoshiro
  • Organizer: 新学術領域研究「ニュートリノフロンティア」研究会2015
  • Place of Presentation: ニューウェルシティ湯河原(静岡県熱海市)
  • Year and Date: 2015-12-03
  • Invited
• [Presentation] Future Supernova neutrino experiments (2015)
  • Author(s): K. Ishidoshiro
  • Organizer: 10th International Workshop on Neutrino-Nucleus Interactions in the Few-GeV Region
  • Place of Presentation: 大阪大学(大阪府大阪市)
  • Year and Date: 2015-11-20
  • Int'l Joint Research / Invited
• [Presentation] 天体活動と超新星ニュートリノ (2015)
  • Author(s): 石徹白晃治
  • Organizer: 重力波天体・地下素核研究・中性子星核物質, 新学術３領域合同シンポジウム「多面的アプローチで解きあかす宇宙と天体」
  • Place of Presentation: 東北大学(宮城県仙台市)
  • Year and Date: 2015-07-25
• [Presentation] Low-energy Neutrino Astrophysics in KamLAND (2015)
  • Author(s): 石徹白晃治
  • Organizer: KEK physics seminar
  • Place of Presentation: KEK(茨城県つくば市)
  • Year and Date: 2015-06-30
• [Presentation] 天体活動と重元素生成の解明へ向けた超新星ニュートリノ観測システムの高度化 (2015)
  • Author(s): 石徹白晃治
  • Organizer: 新学術領域「地下素核研究」第2回 領域研究会
  • Place of Presentation: 神戸大学(兵庫県神戸市)
  • Year and Date: 2015-05-15
• [Presentation] KamLAND-Zen将来計画へ向けた発光性バルーンフィルムの開発研究 (2015)
  • Author(s): 小原脩平
  • Organizer: 新学術領域「地下素核研究」第2回 領域研究会
  • Place of Presentation: 神戸大学(兵庫県神戸市)
  • Year and Date: 2015-05-15
• [Presentation] KamLand-Zenバックグラウンド除去に向けたイメージング検出器開発 (2015)
  • Author(s): 高井貴行
  • Organizer: 新学術領域「地下素核研究」第2回 領域研究会
  • Place of Presentation: 神戸大学(兵庫県神戸市)
  • Year and Date: 2015-05-15
• [Presentation] 液シン型検出器による超新星ニュートリノ研究の現状と展望 (2015)
  • Author(s): 石徹白晃治
  • Organizer: 第一回超新星ニュートリノ研究会
  • Place of Presentation: 東京理科大学 (野田)
  • Year and Date: 2015-03-16
• [Presentation] KamLAND-Zen (2014)
  • Author(s): 石徹白晃治
  • Organizer: 東京大学安東研セミナー
  • Place of Presentation: 東京大学 (東京)
  • Year and Date: 2014-12-02
• [Presentation] カムランドによる超新星前兆ニュートリノ観測と爆発前超新星アラームの可能性 (2014)
  • Author(s): 石徹白晃治
  • Organizer: 東北大学天文学教室談話会
  • Place of Presentation: 東北大学 (仙台)
  • Year and Date: 2014-10-27
• [Presentation] KamLAND-Zen (2014)
  • Author(s): Koji Ishidoshiro
  • Organizer: DBD2014
  • Place of Presentation: Hawaii, US
  • Year and Date: 2014-10-07
  • Invited
• [Presentation] カムランドにおける超新星前兆ニュートリノの検出可能性 (2014)
  • Author(s): 石徹白晃治
  • Organizer: 日本天文学会2014年秋季年会
  • Place of Presentation: 山形大学 (山形)
  • Year and Date: 2014-09-13
• [Presentation] 超新星（前兆）ニュートリノ (2014)
  • Author(s): 石徹白晃治
  • Organizer: 新学術「地下素核研究」第一回研究会
  • Place of Presentation: 大阪大学 (大阪)
  • Year and Date: 2014-08-24
• [Presentation] KamLAND実験における計測システム
  • Author(s): 石徹白晃治
  • Organizer: 計測システム研究会
  • Place of Presentation: 核融合科学研究所
• [Presentation] Image capturing at KamLAND
  • Author(s): Ishidoshiro Koji
  • Organizer: MNR2013
  • Place of Presentation: 東京
• [Presentation] Imaging device study with KamLAND
  • Author(s): Shohei Ishio
  • Organizer: MNR2013
  • Place of Presentation: 東京
• [Presentation] Geo-neutrino measurements with KamLAND
  • Author(s): Ishidoshiro Koji
  • Organizer: Goldschmidt2013
  • Place of Presentation: Florence, Italy
• [Presentation] KamLAND2-Zenに向けたシンチレーションフィルムの研究
  • Author(s): 小原脩平
  • Organizer: 日本物理学会2013年秋季大会
  • Place of Presentation: 高知大学
• [Presentation] KamLAND-Zen実験における粒子識別へ向けたイメージング検出装置の研究
  • Author(s): 石尾昌平
  • Organizer: 日本物理学会2013年秋季大会
  • Place of Presentation: 高知大学
• [Presentation] KamLAND
  • Author(s): Koji Ishidoshiro
  • Organizer: NNN13
  • Place of Presentation: IPMU
  • Invited
• [Presentation] kamLAND2-Zenにむけたシンチレーションフィルムの研究
  • Author(s): 小原脩平
  • Organizer: 日本物理学会第69回年次大会
  • Place of Presentation: 東海大学
• [Remarks] KamLAND web page
  • URL: http://www.awa.tohoku.ac.jp/kamland/
• [Remarks]
  • URL: http://www.awa.tohoku.ac.jp/rcns/
• [Remarks] KamLAND web page
  • URL: http://www.awa.tohoku.ac.jp/kamland/