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

新しい統一的クォーク模型バリオン間相互作用の開発

Research Project

Project/Area Number 20028003
Research Category

Grant-in-Aid for Scientific Research on Priority Areas

Allocation TypeSingle-year Grants
Review Section Science and Engineering
Research InstitutionKyoto University

Principal Investigator

藤原 義和  Kyoto University, 大学院・理学研究科, 講師 (70199397)

Project Period (FY) 2008 – 2009
Project Status Completed (Fiscal Year 2009)
Budget Amount *help
¥1,800,000 (Direct Cost: ¥1,800,000)
Fiscal Year 2009: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 2008: ¥900,000 (Direct Cost: ¥900,000)
Keywordsクォーク模型 / バリオン間相互作用 / ストレンジネス / 共鳴群模型 / ハイペロン / ハイパー核 / Faddeev方程式 / G-行列
Research Abstract

本研究の目的は、QCDの特徴を捉えた有効クォーク模型により、核子間力を含む任意の基底状態バリオン間の統一的相互作用を微視的クラスター模型の枠組みを用いて作成することである。これらに対しては、既にFSS, fss2という現実的クォーク模型バリオン間相互作用が既に得られているが、近年の詳細な少数多体Faddeev計算により、特にΛ-核子相互作用において中心力やスピン軌道力部分の不十分さが明らかになった。今年度は、核子間相互作用について中性子・重陽子(nd)散乱をAlt-Glassberger-Sandhas(AGS)方程式を用いて検討し、中性子の入射エネルギーが実験室系で65MeVまでの実験データや、他の中間子交換模型との詳細な比較を行った。その結果、fss2によるnd弾性散乱の記述は、中間子交換模型に劣らない精度で実験データを再現しており、特に、従来問題であった中性子の散乱分解能の低エネルギー領域での不一致(所謂、Ayパズル)や三体力の証拠とされる高いエネルギー領域での微分散乱断面積の極小値が小さすぎる点が大きく改善した。散乱偏極量については、多くの図がQMPACKホームページに公開されている。一方、重陽子の崩壊過程の微分散乱断面積については、実験との一致は弾性散乱の時ほどよくはないが、定性的には中間子交換模型の場合と似た振舞いを示す。即ち、二体T-行列の特徴的な部分が大きく寄与するquasi-free散乱や終状態相互作用のピークは正しく再現されるが、space-star等の三つの核子が同時に関与する崩壊過程に対しては中間子交換模型と同じ問題が残り、多くの場合微分散乱断面性は小さすぎる。また、我々の計算ではcollinearと呼ばれる配位において精度の問題が残っており、今後の課題である。

Report

(2 results)
  • 2009 Annual Research Report
  • 2008 Annual Research Report
  • Research Products

    (15 results)

All 2010 2009 2008 Other

All Journal Article (12 results) (of which Peer Reviewed: 10 results) Presentation (1 results) Remarks (2 results)

  • [Journal Article] Quark-model predictions for the ΞN interaction and the implications for Ξ hypernuclei2010

    • Author(s)
      河野通郎
    • Journal Title

      Nuclear Physics A 835

      Pages: 358-361

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Localized N, Λ, Σ, and Ξ single-particle potentials in finitenuclei calculated with SU_6 quark-model baryon-baryon interactions2009

    • Author(s)
      河野通郎
    • Journal Title

      Physical Review C 79

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] P-wave ΛN-ΣN coupling and the spin-orbit splitting of^9ΛBe2009

    • Author(s)
      藤原義和
    • Journal Title

      Modern Physics Letters A 24

      Pages: 1031-1034

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Localized N, Λ, Σ and Ξ Single-Particle Potentials in Finite Nuclei Calculated with SU_6 Quark-Model Baryon-Baryon Interactions2009

    • Author(s)
      M. Kohno, et.al.
    • Journal Title

      Physical Review C 79(in press)

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] nα Resonating-Group Calculation with a Quark-Model G-Matrix NN Interaction2008

    • Author(s)
      Y. Fujiwara, et.al.
    • Journal Title

      Progress of Theoretical Physics 120

      Pages: 289-314

    • NAID

      210000111980

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] B_8α and B_8 (3N) Potentials Derived from the SU_6 Quark-Model Baryon-Baryon Interaction2008

    • Author(s)
      Y. Fujiwara, et.al.
    • Journal Title

      Proceedings of the International Nuclear Physics Conferencel (INPC2007), ed. S. Nagamiya, T. Motobayashi, H. Oka, R. S. Hayano and T. Magae. Vol. II - Oral presentations, Nuclear Physics A805

      Pages: 179-181

    • Related Report
      2008 Annual Research Report
  • [Journal Article] Quark-Model Baryon-Baryon Interactions in the Renormalized RGM2008

    • Author(s)
      Y. Fujiwara, et.al.
    • Journal Title

      Journal of Physics : Conference Series 111

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Three-cluster model for light nuclei2008

    • Author(s)
      M. Theeten, et.al.
    • Journal Title

      Journal of Physics : Conference Series 111

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 3α Description of ^<12>C with Microscopic Nonlocal Potentials2008

    • Author(s)
      M. Orabi, et.al.
    • Journal Title

      Journal of Physics : Conference Series 111

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Triton and Hypertriton Binding Energies with SU_6 Quark-Model Baryon-Baryon Interactions2008

    • Author(s)
      Y. Fujiwara, et.al.
    • Journal Title

      AIP Conference Proceedings 1011

      Pages: 247-252

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Nonlocal α α Potential for ^<12>C as a 3α System2008

    • Author(s)
      M. Orabi, et.al.
    • Journal Title

      AIP Conference Proceedings 1011

      Pages: 165-170

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Ξ^<12>C(0^+) and Ξ^<16>O Potentials Derived from the SU_6 Quark-Model Rarvon-Barvon Interaction2008

    • Author(s)
      Y. Fujiwara, et.al.
    • Journal Title

      Proceedings of the Mini-Workshop on Few-Quark States and the Continuum (Bled08). ed. Bolan Golli, Mitia Rosina and Simon Slirca. Bled Workshops in Physics 9

      Pages: 41-45

    • Related Report
      2008 Annual Research Report
  • [Presentation] nd scattering observables predicted by the quark-model baryon-baryon interaction2009

    • Author(s)
      藤原義和
    • Organizer
      The 19th International IUPAP Conference on Few-Body Problems in Physics(fb19)
    • Place of Presentation
      Bonn, Germany
    • Year and Date
      2009-09-04
    • Related Report
      2009 Annual Research Report
  • [Remarks]

    • URL

      http://qmpack.homelinux.com/~qmpack/index.php

    • Related Report
      2009 Annual Research Report
  • [Remarks]

    • URL

      http://qmpack.homelinux.com/~qmpack/index.php

    • Related Report
      2008 Annual Research Report

URL: 

Published: 2008-04-01   Modified: 2018-03-28  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi