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Probing the Absolute Neutrino Mass scale with a Precise Measurement of Cosmic Microwave Background Polarization

Research Project

Project/Area Number 15H03670
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Particle/Nuclear/Cosmic ray/Astro physics
Research InstitutionHigh Energy Accelerator Research Organization

Principal Investigator

HASEGAWA MASAYA  大学共同利用機関法人高エネルギー加速器研究機構, 素粒子原子核研究所, 研究機関講師 (60435617)

Project Period (FY) 2015-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥17,030,000 (Direct Cost: ¥13,100,000、Indirect Cost: ¥3,930,000)
Fiscal Year 2018: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2017: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2016: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2015: ¥7,930,000 (Direct Cost: ¥6,100,000、Indirect Cost: ¥1,830,000)
Keywords宇宙背景放射 / インフレーション / 原始重力波 / 偏光 / 重力レンズ / ニュートリノ質量 / 検出器開発 / 超伝導検出器 / 重力レンズ効果 / 宇宙物理 / ニュートリノ
Outline of Final Research Achievements

The main goal of this study is precise measurement of cosmic microwave background (CMB) polarization, and exploring the finite neutrino masses with the data. We continued the POLARBEAR-1 data taking, and developed a new receiver POLARBEAR-2, which has six times higher mapping speed, for the objective.
We successfully improved the precision for the lensing B-mode power spectrum, and laid a groundwork for future precise measurement of neutrino masses.
The development and integration in the laboratory of POLARBEAR-2 is completed. The receiver was successfully deployed at the observation site in the Atacama desert, Chile in late 2018, and the first light was received at the beginning of 2019. After the commissioning work, we're almost ready to start the science observation.

Academic Significance and Societal Importance of the Research Achievements

ニュートリノ質量の絶対スケールの測定及び質量構造の解明は、素粒子物理および宇宙物理の最重要課題の1つである。宇宙観測を通したニュートリノ質量絶対スケールの探索は、地上実験をしのぐ感度が期待されており、本研究を通してその原理検証が大きく進展し、かつ、新型検出器の実現により数年のスケールでの質量精密測定の実現が視野に入ってきた事は学術的に大きな意義がある。
ニュートリノの性質の解明は、宇宙の進化の様相を明らかにすると共に、なぜこの宇宙に物質しかないのか?等、我々の”起源”の解明につながる豊富な情報を有しており、社会的な関心やインパクトも非常に大きいと考える。

Report

(5 results)
  • 2019 Final Research Report ( PDF )
  • 2018 Annual Research Report
  • 2017 Annual Research Report
  • 2016 Annual Research Report
  • 2015 Annual Research Report
  • Research Products

    (51 results)

All 2020 2019 2018 2017 2016 2015 Other

All Int'l Joint Research (11 results) Journal Article (11 results) (of which Int'l Joint Research: 11 results,  Peer Reviewed: 10 results,  Open Access: 11 results,  Acknowledgement Compliant: 1 results) Presentation (22 results) (of which Int'l Joint Research: 7 results,  Invited: 3 results) Remarks (7 results)

  • [Int'l Joint Research] カリフォルニア大学バークレー校/カリフォルニア大学サンディエゴ校/ローレンス・バークレー国立研究所(米国)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] マギル大学/ダルハウジ大学(カナダ)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] マンチェスター大学/インペリアルカレッジロンドン/ケンブリッジ大学(英国)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] オルセー大学/サクレー大学/パリ大学(フランス)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] SISSA(イタリア)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] カリフォルニア大学バークレー校/カリフォルニア大学サンディエゴ校/ローレンス・バークレー国立研究所(米国)

    • Related Report
      2017 Annual Research Report
  • [Int'l Joint Research] マギル大学/ダルハウジ大学(カナダ)

    • Related Report
      2017 Annual Research Report
  • [Int'l Joint Research] マンチェスター大学/インペリアルカレッジロンドン/ケンブリッジ大学(英国)

    • Related Report
      2017 Annual Research Report
  • [Int'l Joint Research] オルセー大学/サクレー大学/パリ大学(フランス)

    • Related Report
      2017 Annual Research Report
  • [Int'l Joint Research] SISSA(イタリア)

    • Related Report
      2017 Annual Research Report
  • [Int'l Joint Research]

    • Related Report
      2017 Annual Research Report
  • [Journal Article] Deployment of POLARBEAR-2A2020

    • Author(s)
      D. Kaneko, M. Hasegawa(36番目), M. Hazumi(37番目), Y. Minami (56番目), H. Nishino(58番目) 他73名
    • Journal Title

      Journal of Low Temperature Physics

      Volume: 199 Issue: 3-4 Pages: 1137-1147

    • DOI

      10.1007/s10909-020-02366-w

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Internal Delensing of Cosmic Microwave Background Polarization B-Modes with the POLARBEAR Experiment2020

    • Author(s)
      S. Adachi, M. Hasegawa (22番目), M. Hazumi(23番目), Y. Minami (36番目), H. Nishino(39番目) 他49名
    • Journal Title

      Physical Review Letters

      Volume: 124 Issue: 13 Pages: 1313011-7

    • DOI

      10.1103/physrevlett.124.131301

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Measurement of the Cosmic Microwave Background Polarization Lensing Power Spectrum from Two Years of POLARBEAR Data2019

    • Author(s)
      M. Aguilar Faundez, M. Hasegawa (19番目), M. Hazumi(20番目), H. Nishino(36番目), Y. Minami(34番目) 他47名
    • Journal Title

      The Astrophysical Journal

      Volume: 893 Issue: 1 Pages: 85-93

    • DOI

      10.3847/1538-4357/ab7e29

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Evidence for the Cross-Correlation between Cosmic Microwave Background Polarization Lensing from Polarbear and Cosmic Shear from Subaru Hyper Suprime-Cam2019

    • Author(s)
      Toshiya Namikawa, Yuji Chinone, Hironao Miyatake, Masamune Oguri, et al.
    • Journal Title

      The Astrophysical Journal

      Volume: 882 Issue: 1 Pages: 62-62

    • DOI

      10.3847/1538-4357/ab3424

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A Measurement of the Cosmic Microwave Background B-mode Polarization Power Spectrum at Subdegree Scales from Two Years of polarbear Data2017

    • Author(s)
      The POLARBEAR Collaboration、Ade P. A. R.、他
    • Journal Title

      The Astrophysical Journal

      Volume: 848 Issue: 2 Pages: 121-121

    • DOI

      10.3847/1538-4357/aa8e9f

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Performance of a continuously rotating half-wave plate on the POLARBEAR telescope2017

    • Author(s)
      Takakura Satoru、他
    • Journal Title

      Journal of Cosmology and Astroparticle Physics

      Volume: 2017 Issue: 05 Pages: 008-008

    • DOI

      10.1088/1475-7516/2017/05/008

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Making maps of cosmic microwave background polarization forB-mode studies: the POLARBEAR example2017

    • Author(s)
      Poletti Davide、他
    • Journal Title

      Astronomy & Astrophysics

      Volume: 600 Pages: A60-A60

    • DOI

      10.1051/0004-6361/201629467

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Two-layer anti-reflection coating with mullite and polyimide foam for large-diameter cryogenic infrared filters2016

    • Author(s)
      Inoue Yuki、Hamada Takaho、Hasegawa Masaya、Hazumi Masashi、Hori Yasuto、Suzuki Aritoki、Tomaru Takayuki、Matsumura Tomotake、Sakata Toshifumi、Minamoto Tomoyuki、Hirai Tohru
    • Journal Title

      Applied Optics

      Volume: 55 Issue: 34 Pages: 22-22

    • DOI

      10.1364/ao.55.000d22

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] The Simons Array CMB polarization experiment2016

    • Author(s)
      Stebor N.、他
    • Journal Title

      Proc.SPIE Int.Soc.Opt.Eng.

      Volume: 9914 Pages: 99141H-99141H

    • DOI

      10.1117/12.2233103

    • Related Report
      2016 Annual Research Report
    • Open Access / Int'l Joint Research
  • [Journal Article] POLARBEAR Constraints on Cosmic Birefringence and Primordial Magnetic Fields2015

    • Author(s)
      POLARBEAR Collaboration, P. A. R. Ade, O. Tajima (78番目), 他84名
    • Journal Title

      Phys. Rev. D

      Volume: 92 Issue: 12 Pages: 123509-123509

    • DOI

      10.1103/physrevd.92.123509

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Modeling atmospheric emission for CMB ground-based observations2015

    • Author(s)
      J. Errard, P.A.R. Ade, Y. Akiba, K. Arnold, M. Atlas, C. Baccigalupi, D. Barron, D. Boettger, J. Borrill, S. Chapman, Y. Chinone, A. Cukierman, J. Delabrouille, M. Dobbs, A. Ducout, T. Elleflot, G. Fabbian, C. Feng, S. Feeney, A. Gilbert et al.
    • Journal Title

      Astrophysical Journal

      Volume: 809 Issue: 1 Pages: 63-72

    • DOI

      10.1088/0004-637x/809/1/63

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Presentation] POLARBEAR-2/Simons Array実験 -本観測に向けた観測機器コミッショニング状況2020

    • Author(s)
      長谷川雅也
    • Organizer
      天文学会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Simons Array2020

    • Author(s)
      Masaya Hasegawa
    • Organizer
      新学術「加速宇宙」シンポジウム
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 宇宙マイクロ波背景放射偏光観測実験POLARBEAR-2 -観測開始に向けた観測サイトでの準備状況-2019

    • Author(s)
      長谷川雅也
    • Organizer
      天文学会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Cosmic inflation and Neutrino masses at POLARBEAR/Simons Array2019

    • Author(s)
      Masaya Hasegawa
    • Organizer
      日米40周年シンポジウム
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Contributions from IPNS/KEK2019

    • Author(s)
      Masaya Hasegawa
    • Organizer
      LiteBIRDキックオフシンポジウム
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 宇宙マイクロ波背景放射偏光観測のためのPOLARBEAR-2受信機の開発2018

    • Author(s)
      長谷川 雅也
    • Organizer
      第18回ミリ波サブミリ波受信機ワークショップ
    • Related Report
      2017 Annual Research Report
  • [Presentation] 宇宙マイクロ波背景放射偏光観測実験 POLARBEAR-2の準備状況2018

    • Author(s)
      長谷川 雅也
    • Organizer
      天文学会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 宇宙マイクロ波背景放射偏光観測実験POLARBEAR-2のレシーバーシステムの光学性能評価12018

    • Author(s)
      長谷川 雅也
    • Organizer
      天文学会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Cosmic Inflation and Neutrino Masses at POLARBEAR and Simons Array2017

    • Author(s)
      Masaya Hasegawa
    • Organizer
      Topics in Astroparticle and Underground Physics (TAUP2017)
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 宇宙マイクロ波背景放射偏光観測実験 POLARBEAR-2の開発現状2017

    • Author(s)
      長谷川 雅也
    • Organizer
      天文学会
    • Related Report
      2017 Annual Research Report
  • [Presentation] POLARBEAR-2実験:超伝導検出器アレイ読み出し試験2017

    • Author(s)
      長谷川 雅也
    • Organizer
      物理学会
    • Related Report
      2017 Annual Research Report
  • [Presentation] POLARBEAR-2レシーバシステムの開発X2016

    • Author(s)
      長谷川雅也
    • Organizer
      物理学会
    • Place of Presentation
      東北学院大学 (宮城県・仙台市)
    • Year and Date
      2016-03-19
    • Related Report
      2015 Annual Research Report
  • [Presentation] POLARBEAR-2実験: 超伝導TESボロメータ評価システムの開発2016

    • Author(s)
      長谷川雅也、秋葉祥希
    • Organizer
      物理学会
    • Place of Presentation
      東北学院大学 (宮城県・仙台市)
    • Year and Date
      2016-03-19
    • Related Report
      2015 Annual Research Report
  • [Presentation] 宇宙マイクロ波背景放射偏光観測実験POLARBEAR-2計画の概要と現状2016

    • Author(s)
      長谷川雅也、西野玄記
    • Organizer
      天文学会
    • Place of Presentation
      首都大学東京 (東京都・八王子市)
    • Year and Date
      2016-03-14
    • Related Report
      2015 Annual Research Report
  • [Presentation] Cosmology and Particle physics with CMB polarization measurement2016

    • Author(s)
      Masaya Hasegawa
    • Organizer
      2016 Joint Workshop of the France-Korea (FKPPL) and France-Japan(TYL/FJPPL) Particle Physics Laboratories
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Cosmology and Particle physics with POLARBEAR and Simons Array2016

    • Author(s)
      Masaya Hasegawa
    • Organizer
      38th International Conference on High Energy Physics, ICHEP2016
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] POLARBEAR-2 レシーバシステムの開発 XI2016

    • Author(s)
      長谷川雅也
    • Organizer
      物理学会
    • Related Report
      2016 Annual Research Report
  • [Presentation] POLARBEAR-2 レシーバシステムの開発 XII2016

    • Author(s)
      長谷川雅也
    • Organizer
      物理学会
    • Related Report
      2016 Annual Research Report
  • [Presentation] CMBの今と未来2016

    • Author(s)
      Masaya Hasegawa
    • Organizer
      Future prospects for Fundamental Particle Physics
    • Place of Presentation
      京都大学 (京都府・京都市)
    • Related Report
      2015 Annual Research Report
    • Invited
  • [Presentation] POLARBEAR-2レシーバシステムの開発IX2015

    • Author(s)
      長谷川雅也
    • Organizer
      物理学会
    • Place of Presentation
      大阪市立大 (大阪府・大阪市)
    • Year and Date
      2015-09-25
    • Related Report
      2015 Annual Research Report
  • [Presentation] Simons Array2015

    • Author(s)
      Masaya Hasegawa
    • Organizer
      新学術領域研究「なぜ宇宙は加速するのか?-徹底的究明と将来への挑戦-」発足シンポジウム
    • Place of Presentation
      東京大学 (千葉県・柏市)
    • Year and Date
      2015-09-20
    • Related Report
      2015 Annual Research Report
    • Invited
  • [Presentation] Cosmic Inflation and Neutrino Masses at POLARBEAR CMB Polarization Experiment2015

    • Author(s)
      Masaya Hasegawa
    • Organizer
      WIN2015
    • Place of Presentation
      Heidelberg (Germany)
    • Year and Date
      2015-06-08
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Remarks] KEK-CMBグループ

    • Related Report
      2018 Annual Research Report
  • [Remarks] POLARBEARグループweb

    • URL

      http://bolo.berkeley.edu/polarbear/

    • Related Report
      2018 Annual Research Report 2017 Annual Research Report
  • [Remarks] Masaya Hasegawa's Homepage

    • URL

      http://research-up.kek.jp/people/masayan/index.html

    • Related Report
      2018 Annual Research Report 2017 Annual Research Report
  • [Remarks] KEK-CMBグループ

    • Related Report
      2017 Annual Research Report
  • [Remarks] KEK-CMBグループ

    • Related Report
      2016 Annual Research Report
  • [Remarks] POLARBEAR

    • URL

      http://bolo.berkeley.edu/polarbear/

    • Related Report
      2016 Annual Research Report 2015 Annual Research Report
  • [Remarks] KEK-CMBグループ

    • Related Report
      2015 Annual Research Report

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Published: 2015-04-16   Modified: 2022-11-04  

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