• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

宇宙におけるバリオン非対称性及び暗黒物質の起源に関する研究

Research Project

Project/Area Number 07J01988
Research Category

Grant-in-Aid for JSPS Fellows

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

Principal Investigator

中山 和則  The University of Tokyo, 大学院・理学系研究科, 特別研究員(DC1)

Project Period (FY) 2007 – 2009
Project Status Completed (Fiscal Year 2009)
Budget Amount *help
¥2,700,000 (Direct Cost: ¥2,700,000)
Fiscal Year 2009: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 2008: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 2007: ¥900,000 (Direct Cost: ¥900,000)
Keywords暗黒物質 / 宇宙背景放射 / 密度揺らぎ / 宇宙線 / 重力波 / アクシオン / バリオン非対称性 / 超対称性
Research Abstract

近年PAMELA衛星、Fermi衛星によって宇宙線陽電子、電子フラックスの超過成分が観測され、これが暗黒物質対消滅の痕跡である可能性が指摘されている。これを受けて、暗黒物質対消滅とビッグバン元素合成との関係、銀河外拡散ガンマ線への暗黒物質の寄与、銀河中心方向からの高エネルギーニュートリノによる検証可能性などを調べた。将来観測によって暗黒物質対消滅の証拠を検証、あるいは排除出来ることが明らかになった。
また、最近CDMS実験が暗黒物質起源と解釈され得るシグナルイベントを報告した。これに関して、超対称標準模型のパラメータへの示唆、および将来実験での観測可能性を調べた。
一方、宇宙の構造形成の種となる密度揺らぎに関する研究を進めた。特に、密度揺らぎの非ガウス成分と、その素粒子物理への示唆を中心に研究を行なった。暗黒物質の有力候補の一つであるアクシオンにより、等曲率揺らぎの中に非ガウス性が現れる可能性があり、その特徴を詳しく調べた。また、超対称性模型において、超対称性を破る場によって同様の大きな非ガウス性が生成される可能性があることを明らかにした。また、非ガウス性と重力波の観測を組み合わせることで、カーバトンシナリオを検証可能であることを示した。

Report

(3 results)
  • 2009 Annual Research Report
  • 2008 Annual Research Report
  • 2007 Annual Research Report
  • Research Products

    (58 results)

All 2010 2009 2008 2007

All Journal Article (28 results) (of which Peer Reviewed: 25 results) Presentation (30 results)

  • [Journal Article] Gravitational wave background and non-Gaussianity as a Probe of the curvaton scenario2010

    • Author(s)
      中山和則、横山順一
    • Journal Title

      Journal of Cosmology and Astroparticle Physics 1001

      Pages: 10-10

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Implications of CDMS-II result on Higgs sector in the MSSM2010

    • Author(s)
      久野純治、中山和則、山中真人
    • Journal Title

      Physics Letters B 684

      Pages: 246-246

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Signatures of dark matter annihilation in the light of PAMELA/ATIC anomaly2010

    • Author(s)
      中山和則
    • Journal Title

      Proceedings of the 7^<th> International Heidelberg Conference Dark2009

      Pages: 233-233

    • Related Report
      2009 Annual Research Report
  • [Journal Article] Cosmic rays from dark matter annihilation and big-bang nucleosynthesis2009

    • Author(s)
      久野純治、川崎雅裕、郡和範、諸井健夫、中山和則
    • Journal Title

      Physical Review D 79

      Pages: 83522-83522

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Diffuse gamma-ray background and cosmic-ray positrons from Annihilating dark matter2009

    • Author(s)
      川崎雅裕、郡和範、中山和則
    • Journal Title

      Physical Review D 80

      Pages: 23517-23517

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Phenomenological aspects of Horava-Lifshitz cosmology2009

    • Author(s)
      向山信治、中山和則、高橋史宜、横山修一郎
    • Journal Title

      Physics Letters B 679

      Pages: 6-6

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Non-Gaussianity from isocurvature perturbations : Analysis of trispectrum2009

    • Author(s)
      川上悦子、川崎雅裕、中山和則、高橋史宜
    • Journal Title

      Journal of Cosmology and Astroparticle Physics 0909

      Pages: 2-2

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Upward muon signals at neutrino detectors as a probe of Dark matter properties2009

    • Author(s)
      久野純治、中山和則、梁正樹
    • Journal Title

      Physics Letters B 678

      Pages: 101-101

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Constraining light gravitino mass from cosmic microwave back ground2009

    • Author(s)
      市川和秀、川崎雅裕、中山和則、関口豊和、高橋智
    • Journal Title

      Journal of Cosmology and Astroparticle Physics 0908

      Pages: 13-13

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] The R-axion and non-Gaussianity2009

    • Author(s)
      中山和則、高橋史宜
    • Journal Title

      Physics Letters B 679

      Pages: 436-436

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Non-Gaussianity from baryon asymmetry2009

    • Author(s)
      川崎雅裕、中山和則、高橋史宜
    • Journal Title

      Journal of Cosmology and Astroparticle Physics 0901

      Pages: 2-2

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A general analysis of non-Gaussianity from isocurvature perturbations2009

    • Author(s)
      川崎雅裕、中山和則、関口豊和、須山輝明、高橋史宜
    • Journal Title

      Journal of Cosmology and Astroparticle Physics 0901

      Pages: 42-42

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Hilltop non-Gaussianity2009

    • Author(s)
      川崎雅裕、中山和則、高橋史宜
    • Journal Title

      Journal of Cosmology and Astroparticle Physics 0901

      Pages: 26-26

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Positron/gamma-ray signatures of dark matter annihilation and big-bang nucleosynthesis2009

    • Author(s)
      久野純治、川崎雅裕、郡和範、中山和則
    • Journal Title

      Physical Review D 79

      Pages: 63514-63514

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Cosmological moduli problem from thermal effects2009

    • Author(s)
      中山和則、高橋史宜
    • Journal Title

      Physics Letters B 670

      Pages: 434-434

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Neutrino signals from annihilating/decaying dark matter in the light of recent measurements of cosmic-ray electron/positron fluxes2009

    • Author(s)
      久野純治、崎雅裕、郡和範、中山和則
    • Journal Title

      Physical Review D 79

      Pages: 43516-43516

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Space-based gravitational detectors can determine thermal history of the early Universe2008

    • Author(s)
      中山和則、斎藤俊、諏訪雄大、横山順一
    • Journal Title

      Physical Review D 77

      Pages: 124001-124001

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Solving cosmological problems of supersymmetricaxion models in inflationary universe2008

    • Author(s)
      川崎雅裕、中山和則
    • Journal Title

      Physical Review D 77

      Pages: 123524-123524

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Probing reheating temperature of the Universe with Gravitational wave background2008

    • Author(s)
      中山和則、斎藤俊、諏訪雄大、横山順一
    • Journal Title

      Journal of Cosmology and Astroparticle Physics 0806

      Pages: 20-20

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Direct/indirect detection signatures of non-thermally Produced dark matter2008

    • Author(s)
      長井稔、中山和則
    • Journal Title

      Physical Review D 78

      Pages: 63540-63540

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Non-Gaussianity from isocurvature perturbations2008

    • Author(s)
      川崎雅裕、中山和則、関口豊和、須山輝明、高橋史宜
    • Journal Title

      Journal of Cosmology and Astroparticle Physics 0811

      Pages: 19-19

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Inflationary cosmology of axion models in supergravity2008

    • Author(s)
      中山和則
    • Journal Title

      AIP Conference Proceedings 1040

      Pages: 61-61

    • Related Report
      2008 Annual Research Report
  • [Journal Article] Gravitational wave background as a probe of reheating Temperature of the Universe2008

    • Author(s)
      中山和則、斎藤俊、諏訪雄大、横山順一
    • Journal Title

      AIP Conference Proceedings 1078

      Pages: 515-515

    • Related Report
      2008 Annual Research Report
  • [Journal Article] Cosmological implications of supersymmetric axion models2008

    • Author(s)
      川崎 雅裕,中山 和則,瀬波 大土
    • Journal Title

      Joumal of Cosmology and Astroparticle Physics 03

      Pages: 9-9

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Affteck-Dine baryogenesis in anomaly-mediated SUSY breaking2007

    • Author(s)
      川崎 雅裕,中山 和則
    • Journal Title

      Journal of Cosmology and Astroparticle Physics 02

      Pages: 2-2

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Increasing the effective number of neutrinos with decaying particles2007

    • Author(s)
      市川 和秀,川崎 雅裕,中山 和則,瀬波 大土,高橋 史宜
    • Journal Title

      Joumal of Cosmology and Astroparticle Physics 05

      Pages: 8-8

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Baryon asymmetry in a heavy moduli scnario2007

    • Author(s)
      川崎 雅裕,中山 和則
    • Journal Title

      Physical Review D 76

      Pages: 43502-43502

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Nonthermal dark matter in mirage mediation2007

    • Author(s)
      長井 稔,中山 和則
    • Journal Title

      Physical Review D 76

      Pages: 123501-123501

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Presentation] Dark matter annihilation effects on the CMB anisotropy2010

    • Author(s)
      中山和則
    • Organizer
      日本物理学会第65回年次大会
    • Place of Presentation
      岡山大学
    • Year and Date
      2010-03-20
    • Related Report
      2009 Annual Research Report
  • [Presentation] Neutrino/gamma-ray signatures of annihilating/decaying dark matter2009

    • Author(s)
      中山和則
    • Organizer
      Focus week on indirect dark matter search
    • Place of Presentation
      東京大学 IPMU
    • Year and Date
      2009-12-08
    • Related Report
      2009 Annual Research Report
  • [Presentation] Dark matter annihilation effects on the CMB anisotropy2009

    • Author(s)
      中山和則
    • Organizer
      JGRG19
    • Place of Presentation
      立教大学
    • Year and Date
      2009-12-04
    • Related Report
      2009 Annual Research Report
  • [Presentation] Non-Gaussianity and Particle Physics Models2009

    • Author(s)
      中山和則
    • Organizer
      日本物理学会2009年秋季大会
    • Place of Presentation
      甲南大学
    • Year and Date
      2009-09-11
    • Related Report
      2009 Annual Research Report
  • [Presentation] Cosmological and astrophysical signatures of dark matter Annihilation2009

    • Author(s)
      中山和則
    • Organizer
      COSMO 09
    • Place of Presentation
      CERN, Geneve
    • Year and Date
      2009-09-08
    • Related Report
      2009 Annual Research Report
  • [Presentation] Cosmological/astrophysical signatures of dark matter Annihilation2009

    • Author(s)
      中山和則
    • Organizer
      The KIAS-KAIST-YITP Joint Workshop
    • Place of Presentation
      KIAS, Seoul
    • Year and Date
      2009-09-01
    • Related Report
      2009 Annual Research Report
  • [Presentation] 宇宙線アノマリーと暗黒物質2009

    • Author(s)
      中山和則
    • Organizer
      Summer Institute 2009
    • Place of Presentation
      人材開発センター富士研修所
    • Year and Date
      2009-08-05
    • Related Report
      2009 Annual Research Report
  • [Presentation] Non-Gaussianity from isocurvature perturbations2009

    • Author(s)
      中山和則
    • Organizer
      Focus week on non-Gaussianities in the sky
    • Place of Presentation
      東京大学 IPMU
    • Year and Date
      2009-04-08
    • Related Report
      2009 Annual Research Report
  • [Presentation] Positron signature from dark matter annihilation and big-bang nucleosynthesis2009

    • Author(s)
      中山和則
    • Organizer
      日本物理学会第64回年次大会
    • Place of Presentation
      立教大学
    • Year and Date
      2009-03-20
    • Related Report
      2008 Annual Research Report
  • [Presentation] Dark matter annihilation and PAMELA/ATIC anomaly2009

    • Author(s)
      中山和則
    • Organizer
      高エネルギーガンマ線天体研究会
    • Place of Presentation
      東京大学宇宙線研究所
    • Year and Date
      2009-03-10
    • Related Report
      2008 Annual Research Report
  • [Presentation] Dark matter annihilation, cosmic rays and big-bang nucleosynthesis2009

    • Author(s)
      中山和則
    • Organizer
      KEK理論研究会(KEKPH09)
    • Place of Presentation
      高エネルギー加速器研究機構
    • Year and Date
      2009-03-04
    • Related Report
      2008 Annual Research Report
  • [Presentation] Cosmic-rays from dark matter annihilation and Big-bang nucleosynthesis2009

    • Author(s)
      中山和則
    • Organizer
      Progress in Particle Physics 2008
    • Place of Presentation
      京都大学
    • Year and Date
      2009-02-17
    • Related Report
      2008 Annual Research Report
  • [Presentation] Signatures of dark matter annihilation in the light of PAMELA/ATIC anomaly2009

    • Author(s)
      中山和則
    • Organizer
      7^<th> International Heidelberg Conference on Dark Matter in Astro and particle Physics (DARK2009)
    • Place of Presentation
      Rydges Hotel, Christchurch, New Zealand
    • Year and Date
      2009-01-20
    • Related Report
      2008 Annual Research Report
  • [Presentation] Signatures of dark matter annihilation in the light of Recent measurements of cosmic-ray positron/electron excesses2008

    • Author(s)
      中山和則
    • Organizer
      研究会「電子、陽電子観測と関連する話題」
    • Place of Presentation
      早稲田大学
    • Year and Date
      2008-12-24
    • Related Report
      2008 Annual Research Report
  • [Presentation] Positron signature from dark matter annihilation and Big-bang nucleosynthesis2008

    • Author(s)
      中山和則
    • Organizer
      宇宙線研究所理論研究会
    • Place of Presentation
      東京大学宇宙線研究所
    • Year and Date
      2008-12-09
    • Related Report
      2008 Annual Research Report
  • [Presentation] Non-Gaussianity from isocurvature perturbations2008

    • Author(s)
      中山和則
    • Organizer
      The 18^<th> Workshop on General Relativity and Gravitation in Japan (JGRG18)
    • Place of Presentation
      広島大学
    • Year and Date
      2008-11-18
    • Related Report
      2008 Annual Research Report
  • [Presentation] Direct/Indirect Signatures of Dark Matter Annihilation2008

    • Author(s)
      中山和則
    • Organizer
      The 7^<th> RESCEU Symposium on Astroparticle Physics and Cosmology
    • Place of Presentation
      東京大学
    • Year and Date
      2008-11-11
    • Related Report
      2008 Annual Research Report
  • [Presentation] 背景重力波観測による初期宇宙熱史と再加熱温度の決定2008

    • Author(s)
      中山和則
    • Organizer
      日本物理学会2008年秋季大会
    • Place of Presentation
      山形大学
    • Year and Date
      2008-09-20
    • Related Report
      2008 Annual Research Report
  • [Presentation] 非熱的暗黒物質とその検出可能性2008

    • Author(s)
      中山和則
    • Organizer
      第8回「宇宙における時空、物質、構造の進化」研究会
    • Place of Presentation
      浅虫温泉
    • Year and Date
      2008-08-31
    • Related Report
      2008 Annual Research Report
  • [Presentation] Gravitational wave background as a probe of reheating Temperature of the Universe2008

    • Author(s)
      中山和則
    • Organizer
      The 16^<th> International Conference on Super symmetry and Unification of Fundamental Interactions (SUSY08)
    • Place of Presentation
      COEX Center, Seoul
    • Year and Date
      2008-06-17
    • Related Report
      2008 Annual Research Report
  • [Presentation] Gravitational wave background as a probe of reheating Temperature of the Universe2008

    • Author(s)
      中山和則
    • Organizer
      14^<th> International Symposium on Particles, Strings and Cosmology (PASCOS-08)
    • Place of Presentation
      Perimeter Institute, Ontario, Canada
    • Year and Date
      2008-06-06
    • Related Report
      2008 Annual Research Report
  • [Presentation] Probing reheating temperature of the Universe with Gravitational wave background2008

    • Author(s)
      中山和則
    • Organizer
      RESCEU-IAP Joint Workshop on the Early Universe
    • Place of Presentation
      日光大江戸温泉物語
    • Year and Date
      2008-05-15
    • Related Report
      2008 Annual Research Report
  • [Presentation] Are axion models compatible with inflation in supergravity2008

    • Author(s)
      中山 和則
    • Organizer
      日本物理学会第63回年次大会
    • Place of Presentation
      近畿大学
    • Year and Date
      2008-03-23
    • Related Report
      2007 Annual Research Report
  • [Presentation] Inflationary cosmology of aXion models in supergravity2008

    • Author(s)
      中山 和則
    • Organizer
      Accelerators in the Universe(AIUO8)
    • Place of Presentation
      KEK
    • Year and Date
      2008-03-12
    • Related Report
      2007 Annual Research Report
  • [Presentation] Cosmological Implications of Supersymmetric Axion Models2007

    • Author(s)
      中山 和則
    • Organizer
      宇宙線研究所理論研究会
    • Place of Presentation
      東京大学宇宙線研究所
    • Year and Date
      2007-12-10
    • Related Report
      2007 Annual Research Report
  • [Presentation] Cosmology of Supersymmetric Axion Models2007

    • Author(s)
      中山 和則
    • Organizer
      The 17th Workshop on Genaral Relativity and Gravitation in Japan(JGRG17)
    • Place of Presentation
      名古屋大学
    • Year and Date
      2007-12-04
    • Related Report
      2007 Annual Research Report
  • [Presentation] 宇宙の輻射エネルギーと超対称アクシオン模型2007

    • Author(s)
      中山 和則
    • Organizer
      日本物理学会第62回年次大会
    • Place of Presentation
      北海道大学
    • Year and Date
      2007-09-21
    • Related Report
      2007 Annual Research Report
  • [Presentation] Cosmology of heavy moduli:baryogenesis and nonthermal dark matter2007

    • Author(s)
      中山 和則
    • Organizer
      LHC meeting, Particle Physics in the Era of LHC
    • Place of Presentation
      KEK
    • Year and Date
      2007-07-21
    • Related Report
      2007 Annual Research Report
  • [Presentation] Increasing the effective number of neutrinos with decaying particles2007

    • Author(s)
      中山 和則
    • Organizer
      13th International Symposium on particle, Strings and Cosmology(PASCOS-07)
    • Place of Presentation
      Imperial College,London
    • Year and Date
      2007-07-06
    • Related Report
      2007 Annual Research Report
  • [Presentation] Baryon Aymmetry in Heavy Moduli Scenario2007

    • Author(s)
      中山 和則
    • Organizer
      研究会:宇宙初期における時空と物質の進化
    • Place of Presentation
      東京大学
    • Year and Date
      2007-05-30
    • Related Report
      2007 Annual Research Report

URL: 

Published: 2007-04-01   Modified: 2024-03-26  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi