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重いクォークを含む新しくエキゾティックなハドロンの動的性質の研究

Research Project

Project/Area Number 09F09027
Research Category

Grant-in-Aid for JSPS Fellows

Allocation TypeSingle-year Grants
Section外国
Research Field Particle/Nuclear/Cosmic ray/Astro physics
Research InstitutionTokyo Institute of Technology

Principal Investigator

岡 真  東京工業大学, 大学院・理工学研究科, 教授

Co-Investigator(Kenkyū-buntansha) LIU Yan-rui  東京工業大学, 大学院・理工学研究科, 外国人特別研究員
Project Period (FY) 2009 – 2011
Project Status Completed (Fiscal Year 2011)
Budget Amount *help
¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 2011: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 2010: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 2009: ¥500,000 (Direct Cost: ¥500,000)
Keywords強い相互作用 / 量子色力学 / クォーク / グルーオン / ハドロン / QCD和則 / 格子QCD / クォーク模型 / チャームクォーク / QCD
Research Abstract

本科研費を用いて、中国・北京から着任した、外国人特別研究員のLiu氏および北京大学の研究者との共同研究を行った。
本年度は、ヘビーバリオンと核子およびヘビーバリオン間の相互作用を1ボソン交換描像(OBEP)を用いて求め、主として2体の束縛状態が存在するかどうかを詳細に検討した。そのためにヘビーバリオンを含む有効理論を、ヘビークォーク対称性、カイラル対称性および隠れたゲージ対称性を用いて構築し、ヘビークォーク極限でのそれらの結合定数をヘビーバリオンの崩壊や、カイラル現象論,クォーク模型を用いて算出した。その結果を用いてメソンとヘビーバリオンの相互作用バーテックスを決定し、これを用いて、ヘビーバリオンと核子、およびヘビーバリオン同志の相互作用を中間子交換描像に基づいて構築した。バリオン2体の束縛状態に関して、
(1)チャネル結合計算を用いて,Λ_cN系においては、パイオン交換のテンサー力によるΣ_c,Σ_^c*の混合の役割が重要で、想定されるカットオフの範囲内で、Λ_cNのスピン0,1の状態に束縛状態が存在する可能性が高いことを示した。
(2)同様にチャームを2個含むΛ_cΛ_c系においても、Σ_c,Σ_c^*を含む状態との結合により束縛状態が存在する可能性が高いことを示した。
これらの研究成果は国際的にも注目を集めており,各種国際会議における講演も行った。

Report

(3 results)
  • 2011 Annual Research Report
  • 2010 Annual Research Report
  • 2009 Annual Research Report
  • Research Products

    (29 results)

All 2011 2010 2009 Other

All Journal Article (19 results) (of which Peer Reviewed: 17 results) Presentation (9 results) Remarks (1 results)

  • [Journal Article] Possible ΛcΛc molecular bound state2011

    • Author(s)
      Wakafumi Meguro, Yan-Rui Liu, Makoto Oka
    • Journal Title

      Physics Letters

      Volume: B704 Issue: 5 Pages: 547-550

    • DOI

      10.1016/j.physletb.2011.09.088

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Possible ΛcN molecular bound state2011

    • Author(s)
      Yan-Rui Liu, Makoto Oka
    • Journal Title

      AIP Conf.Proc.

      Volume: 1388 Pages: 370-373

    • DOI

      10.1063/1.3647410

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] D anti-D production and their interactions2011

    • Author(s)
      Yan-Rui Liu, Makoto Oka, Makoto Takizawa, Xiang Liu
    • Journal Title

      Jour.Phys.Conf.Ser.

      Volume: 312 Issue: 3 Pages: 32012-32012

    • DOI

      10.1088/1742-6596/312/3/032012

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] D anti-D production and their interactions2011

    • Author(s)
      Yan-Rui Liu, Makoto Takizawa, Xiang Liu, Makoto Oka
    • Journal Title

      AIP Conf.Proc.

      Volume: 1343 Pages: 400-402

    • DOI

      10.1063/1.3575042

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Two novel methods in QCD sum rules.2010

    • Author(s)
      P.Gubler, M.Oka
    • Journal Title

      AIP Conf.Proc.

      Volume: 1322 Pages: 241-249

    • Related Report
      2010 Annual Research Report
  • [Journal Article] Meson-baryon coupling constants in two-flavor lattice QCD.2010

    • Author(s)
      G.Erkol, M.Oka, T.T.Takahashi
    • Journal Title

      AIP Conf.Proc.

      Volume: 1322 Pages: 478-482

    • Related Report
      2010 Annual Research Report
  • [Journal Article] ∧(1405) from lattice QCD.2010

    • Author(s)
      T.T.Takahashi, M.Oka
    • Journal Title

      Prog.Theor.Phys.

      Volume: S186 Pages: 172-179

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] S-wave π K Scattering Length in 2+1 Flavor Lattice QCD2010

    • Author(s)
      K.Sasaki, N.Ishizuka, T.Yamazaki, M.Oka
    • Journal Title

      Prog.Theor.Phys.

      Volume: S186 Pages: 187-192

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Possible Quantum Numbers of Θ+(1540) in QCD Sum Rules.2010

    • Author(s)
      P.Gubler, D.Jido, T.Kojo, T.Nishikawa, M.Oka
    • Journal Title

      Prog.Theor.Phys.

      Volume: S186 Pages: 193-198

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] ∧ ^*N Bound State Based on Chiral Dynamics.2010

    • Author(s)
      T.Uchino, T.Hyodo, M.Oka
    • Journal Title

      Prog.Theor.Phys.

      Volume: S186 Pages: 240-243

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] DD^<bar> production and their interactions.2010

    • Author(s)
      Y.-R.Liu, M.Oka, M.Takizawa, X.Liu, W.-Z.Deng, S.-L.Zhu
    • Journal Title

      Phys.Rev

      Volume: D82 Pages: 14011-14011

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A Bayesian approach to QCD sum rules.2010

    • Author(s)
      P.Gubler, M.Oka
    • Journal Title

      Prog.Theor.Phys.

      Volume: 124 Pages: 995-1018

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] S=+1 pentaquarks in QCD sum rules.2010

    • Author(s)
      P.Gubler, D.Jido, T.Kojo, T.Nishikawa, M.Oka
    • Journal Title

      Phys.Rev

      Volume: D82 Pages: 14011-14011

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Recent QCD results on the strange hadron systems.2010

    • Author(s)
      Makoto Oka
    • Journal Title

      Int.J.Mod.Phys.

      Volume: E19 Pages: 2326-2334

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Pseudoscalar-Meson Octet-Baryon Coupling Constants from two-flavor Lattice QCD.2010

    • Author(s)
      T.T.Takahashi, G.Erkol, M.Oka
    • Journal Title

      Nucl.Phys.

      Volume: A835 Pages: 346-349

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Axial Charges of Octet Baryons in Two-flavor Lattice QCD2010

    • Author(s)
      G.Erkol, M.Oka, T.T.Takahashi
    • Journal Title

      Physics Letters B686

      Pages: 36-40

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Possible quantum numbers of the pentaquark Θ^+(1540)in QCD sum rules2009

    • Author(s)
      P.Gubler, D.Jido, T.Kojo, T.Nishikawa, M.Oka
    • Journal Title

      Physical Review D80

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Light Pseudoscalar Meson and Heavy Meson Scattering Lengths2009

    • Author(s)
      Y.-R.Liu, X.Liu, S-L.Zhu
    • Journal Title

      Physical Review D79

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] X(3872)and Other Possible Heavy Molecular States2009

    • Author(s)
      X.Liu, Z.-G.Luo, Y.-R.Liu, S.-L.Zhu
    • Journal Title

      European Physics Journal C61

      Pages: 411-428

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Presentation] Key Roles of Strangeness in the Generalized Nuclear Force2011

    • Author(s)
      Makoto Oka
    • Organizer
      ECT* Workshop oh Strange Hadronic Matter
    • Place of Presentation
      Trento, Italy
    • Related Report
      2011 Annual Research Report
  • [Presentation] Application of the Maximum Entropy Method to QCD sum rules2011

    • Author(s)
      Makoto Oka
    • Organizer
      IIIrd International Conference on Hadron Physics TROIA'11
    • Place of Presentation
      Canakkale, Turkey
    • Related Report
      2011 Annual Research Report
  • [Presentation] Prospects of the Hadron Physics at J-PARC2011

    • Author(s)
      Makoto Oka
    • Organizer
      International Symposium "Nanoscience and Quantum Physics 2011"
    • Place of Presentation
      Tokyo, Japan(招待講演)
    • Related Report
      2010 Annual Research Report
  • [Presentation] Dbar D scattering in a meson exchange model2010

    • Author(s)
      Y.-R.Liu
    • Organizer
      日本物理学会第65回年次大会
    • Place of Presentation
      岡山大学
    • Year and Date
      2010-03-23
    • Related Report
      2009 Annual Research Report
  • [Presentation] Two novel methods in QCD sum rules2010

    • Author(s)
      Makoto Oka
    • Organizer
      International Workshop on Chiral Symmetry in Hadrons and Nuclei
    • Place of Presentation
      Valencia, Spain(招待講演)
    • Related Report
      2010 Annual Research Report
  • [Presentation] Possible bound state in the Ac N channel2010

    • Author(s)
      Yan-rui Liu, Makoto Oka
    • Organizer
      International conference on the structure of baryons (BARYONS'10)
    • Place of Presentation
      Osaka, Japan
    • Related Report
      2010 Annual Research Report
  • [Presentation] Possible molecular bound state of two charmed baryons2010

    • Author(s)
      Wakafumi Meguro, Yan-rui Liu, Makoto Oka
    • Organizer
      International conference on the structure of baryons (BARYONS'10)
    • Place of Presentation
      Osaka, Japan
    • Related Report
      2010 Annual Research Report
  • [Presentation] A Bayesian Analysis of QCD Sum Rules2010

    • Author(s)
      Philipp Gubler, Makoto Oka
    • Organizer
      International conference on the structure of baryons (BARYONS'10)
    • Place of Presentation
      Osaka, Japan
    • Related Report
      2010 Annual Research Report
  • [Presentation] ∧^*hypernuclei with chiral dynamics2010

    • Author(s)
      Toshitaka Uchino, Tetsuo Hyodo, Makoto Oka
    • Organizer
      International conference on the structure of baryons (BARYONS' 10)
    • Place of Presentation
      Osaka, Japan
    • Related Report
      2010 Annual Research Report
  • [Remarks]

    • URL

      http://www.th.phys.titech.ac.jp/~oka/

    • Related Report
      2009 Annual Research Report

URL: 

Published: 2009-04-01   Modified: 2024-03-26  

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