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

2005 Fiscal Year Annual Research Report

エキゾティックなクォーク・ハドロン多体系の理論的研究

Research Project

Project/Area Number 17070002
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 (60144606)

Co-Investigator(Kenkyū-buntansha) 大西 明  北海道大学, 大学院・理学研究科, 助教授 (70250412)
国広 悌二  京都大学, 基礎物理学研究科, 教授 (20153314)
初田 哲男  東京大学, 大学院・理学系研究科, 教授 (20192700)
肥山 詠美子  奈良女子大学, 理学部, 助教授 (10311359)
保坂 淳  大阪大学, 核物理研究センター, 助教授 (10259872)
Keywordsストレンジネス / クオーク / ハドロン / ハイパー核 / K中間子 / ハイペロン / 量子色力学 / カイラル対称性
Research Abstract

本研究は、特定領域研究「ストレンジネスで探るクォーク多体系」の物理における理論研究者を集約することにより、この特定領域研究をリードすることを目的としている。本年度は、3つの研究の柱をたて、それらの実現を目指してきた。
(1)ハドロン分光:2003年のペンタクオークの発見以来新しい観点からの研究が活発に行われている。東工大、東大、阪大、京大、奈良女子大、高エネルギー加速器研究機構のグループの研究で、エキゾティックバリオンとメソンの質量と構造の量子色力学(QCD)に基く解析が精力的に行われた。特に、観測で決まっていない量子数の予言や、幅の狭い理由の解明などが注目される結果である。
(2)ハドロン物質:有限密度のハドロン物質の性質をその内部でのハドロンの性質の変化を中心に研究している。K中間子原子核の構造、分光の研究は理論と実験の緊密な連携により、新しい発展を見せている。さらに、奈良女子大、阪大グループではη、η'、Θ核の生成などの新しい提案をした。J-PARCの実験でこれらの状態の発見され、カイラル対称性の回復を解明する重要な手がかりとなる事が期待される。また、高密度でのQCDのカラー超伝導相のダイナミクスやその周辺でのソフトモードの解明などが東大、東工大、京大、北大、高エネルギー加速器研究機構などのグループで進められた。
(3)ハイパー核分光:Λ、ΣおよびダブルΛハイパー核の構造の研究は、ハイペロンと核子の相互作用を原子核の構造を用いて解明する重要な研究である。奈良女子大、京大、大阪電通大グループでは、核力の模型を用いてハイパー核の精密準位計算を行い、実験と比較してきた。J-PARCでの実験結果と比較すべき理論的予言がどんどん生まれている。東工大、大阪電通大のグループではダブルΛハイパー核探索に必要な弱崩壊の分岐比や、弱崩壊における強い相互作用の影響に関する研究も進んだ。

  • Research Products

    (47 results)

All 2006 2005

All Journal Article (46 results) Book (1 results)

  • [Journal Article] Five-body calculation of resonance and scattering states of pentaquark system2006

    • Author(s)
      E.Hiyama
    • Journal Title

      Physics Letters B633

      Pages: 237

  • [Journal Article] SUPPRESSION OF THETA+(J^P=3/2+-) PHOTOPRODUCTION FROM THE PROTON2006

    • Author(s)
      S.-I.Nam
    • Journal Title

      Physics Letters B633

      Pages: 483

  • [Journal Article] OVERDAMPING PHENOMENA NEAR THE CRITICAL POINT IN O(N) MODEL2006

    • Author(s)
      K.Ohnishi
    • Journal Title

      Phys.Lett.B 632

      Pages: 252-256

  • [Journal Article] EXTENSIVE STUDY OF PHASE DIAGRAM FOR CHARGE NEUTRAL HOMOGENEOUS QUARK MATTER AFFECTED BY DYNAMICAL CHIRAL CONDENSATION : UNIFIED PICTURE FOR THERMAL UNPAIRING TRANSITIONS FROM WEAK TO STRONG COUPLING2006

    • Author(s)
      H.Abuki
    • Journal Title

      Nuclear Physics A768

      Pages: 118-159

  • [Journal Article] QUARK SPECTRUM ABOVE BUT NEAR CRITICAL TEMPERATURE OF CHIRAL TRANSITION2006

    • Author(s)
      M.Kitazawa
    • Journal Title

      Physics Letters B633

      Pages: 269-274

  • [Journal Article] COUPLED QCD SUM RULES FOR POSITIVE AND NEGATIVE-PARITY NUCLEONS2006

    • Author(s)
      Y.Kondo
    • Journal Title

      Nuclear Physics A764

      Pages: 303-312

  • [Journal Article] RENORMALIZATION GROUP EQUATIONS IN A MODEL OF GENERALIZED HIDDEN LOCAL SYMMETRY AND RESTORATION OF CHIRAL SYMMETRY2006

    • Author(s)
      Y.Hidaka
    • Journal Title

      Physical Review D71・3

      Pages: 036004

  • [Journal Article] Penta-quark baryon in anisotropic lattice QCD2005

    • Author(s)
      N.Ishii
    • Journal Title

      Physical Review D71

      Pages: 034001

  • [Journal Article] Decay of Θ^+ in a Quark Model2005

    • Author(s)
      A.Hosaka
    • Journal Title

      Physical Review D71

      Pages: 074021

  • [Journal Article] Effects of Instanton Induced Interaction on the Pentaquarks2005

    • Author(s)
      T.Shinozaki
    • Journal Title

      Physical Review D71

      Pages: 074025

  • [Journal Article] Thermodynamics of Two-Flavor Quark Matter in the Instanton Vacuum at Finite Chemical Potential2005

    • Author(s)
      H.Kiuchi
    • Journal Title

      Progress of Theoretical Physics 114

      Pages: 813-843

  • [Journal Article] Sigma Exchange in the Nonmesonic Decays of Light Hypernuclei and Violation of the Delta I=1/2 Rule2005

    • Author(s)
      K.Sasaki
    • Journal Title

      Physical Review C71

      Pages: 035502

  • [Journal Article] Penta-quark in Anisotropic Lattice QCD2005

    • Author(s)
      N.Ishii
    • Journal Title

      Nuclear Physics A755

      Pages: 467-470

  • [Journal Article] Spin 3/2 Penta-quarks in Anisotropic Lattice QCD2005

    • Author(s)
      N.Ishii
    • Journal Title

      Physical Review D72

      Pages: 074503

  • [Journal Article] Pentaquark Baryons in the QCD Sum Rule2005

    • Author(s)
      M.Oka
    • Journal Title

      Nuclear Physics A755

      Pages: 391-394

  • [Journal Article] Models of the Nonmesonic Weak Decay2005

    • Author(s)
      M.Oka
    • Journal Title

      Nuclear Physics A754

      Pages: 117-126

  • [Journal Article] Lattice-QCD based Schwinger-Dyson approach for Chiral Phase Transition2005

    • Author(s)
      H.Iida
    • Journal Title

      Nuclear Physics B Proceedings Supplements 141

      Pages: 191-195

  • [Journal Article] Penta-Quark Anti-Decuplet in Anisotropic Lattice QCD2005

    • Author(s)
      N.Ishii
    • Journal Title

      Nuclear Physics B Proceedings Supplements 140

      Pages: 269-271

  • [Journal Article] The lattice QCD simulation of the quark-gluon mixed condensate g<qσ Gq> at finite temperature and the phase transition of QCD2005

    • Author(s)
      T.Doi
    • Journal Title

      Nuclear Physics B Proceedings Supplements 140

      Pages: 559-561

  • [Journal Article] Anisotropic Lattice QCD Study of Pentaquark Baryons in Spin 3/2 Channel2005

    • Author(s)
      T.Doi
    • Journal Title

      Proceedings of Science LAT2005

      Pages: 064

  • [Journal Article] Residual Interaction effects on deeply bound pionic states in Sn and Pb isotopes2005

    • Author(s)
      N.Nose-Togawa
    • Journal Title

      Physical Review C71

      Pages: 061601-1-061601-5

  • [Journal Article] Production of Θ hypernuclei with the (K,π) reaction2005

    • Author(s)
      H.Nagahiro
    • Journal Title

      Physics Letters B620

      Pages: 125-130

  • [Journal Article] Formation of eta'(958)-mesic nuclei and axial U(1) anomaly at finite density2005

    • Author(s)
      H.Nagahiro
    • Journal Title

      Physical Review Letters 94

      Pages: 232503-1-232503-4

  • [Journal Article] Formation of kaonic atoms and kaonic nuclei by in-flight (K, p) reactions2005

    • Author(s)
      J.Yamagata
    • Journal Title

      Progress of Theoretical Physics 114

      Pages: 301-306,905

  • [Journal Article] Formation of mesic nuclei by (γ,p) reactions2005

    • Author(s)
      H.Nagahiro
    • Journal Title

      Nuclear Physics A761

      Pages: 92-119

  • [Journal Article] Interactions between Octet Baryons in the SU_6 Quark Model and their Applications to Light Hypernuclei2005

    • Author(s)
      Y.Fujiwara
    • Journal Title

      Nuclear Physics A754

      Pages: 43c-47c

  • [Journal Article] Mean field effects on collective flow in high-energy heavy-ion collisions at 2-158 A GeV energies2005

    • Author(s)
      M.Isse
    • Journal Title

      Physical Review C72

      Pages: 064908-1-064908-15

  • [Journal Article] Hadron-string cascade versus hydrodynamics in Cu+Cu collisions at 【square root】SNN= 200 GeV2005

    • Author(s)
      T.Hirano
    • Journal Title

      Physical Review C72

      Pages: 041901(R)-1-041901(R)-5

  • [Journal Article] Antisymmetrized Molecular Dynamics with Coherent State Pions and Its Application to Excited Spectrum of C2005

    • Author(s)
      A.Isshiki
    • Journal Title

      Progress of Theoretical Physics 114

      Pages: 573-582

  • [Journal Article] Density-Dependent Hartree-Fock Calculations in Hypernuclei2005

    • Author(s)
      T.Harada
    • Journal Title

      Nuclear Physics A754

      Pages: 86-90

  • [Journal Article] SPECTRAL ANALYSIS OF EXCITED NUCLEONS IN LATTICE QCD WITH MAXIMUM ENTROPY METHOD.2005

    • Author(s)
      K.Sasaki
    • Journal Title

      Physics Letters B623

      Pages: 208

  • [Journal Article] STRANGE TRIBARYONS AS NONA-QUARK STATES2005

    • Author(s)
      Y.Maezawa
    • Journal Title

      Progress of Theoretical Physics 114

      Pages: 317

  • [Journal Article] THERMAL PHASE TRANSITIONS AND GAPLESS QUARK SPECTRA IN QUARK MATTER AT HIGH DENSITY2005

    • Author(s)
      K.Iida
    • Journal Title

      Physical Review D71

      Pages: 054003

  • [Journal Article] IN-MEDIUM SPECTRAL FUNCTIONS FROM LATTICE QCD2005

    • Author(s)
      T.Hatsuda
    • Journal Title

      European Physics Journal C43

      Pages: 45

  • [Journal Article] PHENOMENOLOGICAL STUDY OF TWO-MESON COUPLINGS OF THETA+2005

    • Author(s)
      T.Hyodo
    • Journal Title

      Physical Review C72

      Pages: 055202

  • [Journal Article] LAMBDA(1520,3/2-) PHOTOPRODUCTI ON REACTION VIA GAMMA N-> K LAMBDA(1520)2005

    • Author(s)
      S.I.Nam
    • Journal Title

      Physical Review D71

      Pages: 114012

  • [Journal Article] PHENOMENOLOGY OF SPIN 3/2 BARYONS WITH PENTAQUARKS2005

    • Author(s)
      T.Hyodo
    • Journal Title

      Physical Review D71

      Pages: 054017

  • [Journal Article] TWO-MESON CLOUD CONTRIBUTION TO THE BARYON ANTIDECUPLET BINDING2005

    • Author(s)
      A.Hosaka
    • Journal Title

      Physical Review C71

      Pages: 045205

  • [Journal Article] DECAY OF THETA+ IN A QUARK MODEL2005

    • Author(s)
      A.Hosaka
    • Journal Title

      Nuclear Physics A755

      Pages: 407

  • [Journal Article] PRE-CRITICAL PHENOMENA OF TWO-FLAVOR COLOR SUPERCONDUCTIVITY IN HEATED QUARK MATTER : DIQUARK-PAIR FLUCTUATIONS AND NON-FERMI LIQUID BEHAVIOR2005

    • Author(s)
      M.Kitazawa
    • Journal Title

      Prog.Theor.Phys. 114

      Pages: 117-155

  • [Journal Article] SEARCH FOR THE POSSIBLE S=+1 PENTAQUARK STATES IN QUENCHED LATTICE QCD2005

    • Author(s)
      T.T.Takahashi
    • Journal Title

      Physical Review D71

      Pages: 114509

  • [Journal Article] NON-FERMI LIQUID BEHAVIOR INDUCED BY RESONANT DIQUARK-PAIR SCATTERING IN HEATED QUARK MATTER2005

    • Author(s)
      M.Kitazawa
    • Journal Title

      Physics Letters B631

      Pages: 157-163

  • [Journal Article] Chiral symmetry breaking and stability of strangelets2005

    • Author(s)
      S.Yasui
    • Journal Title

      Physical Review D71

      Pages: 074009

  • [Journal Article] NARROW J^p=1/2^+,J^p=3/2+,AND 3/2+ STATES OF THETA^+ IN A QUARK MODEL WITH ANTISYMMETRIZED MOLECULAR DYNAMICS2005

    • Author(s)
      Y.Kanada-Enyo
    • Journal Title

      Physical Review C71・4

      Pages: 045202

  • [Journal Article] SPIN-3/2 PENTAQUARK IN THE QCD SUM RULE2005

    • Author(s)
      T.Nishikawa
    • Journal Title

      Physical Review D71・7

      Pages: 076004

  • [Journal Article] AXIAL VECTOR TETRAQUARK WITH S=+22005

    • Author(s)
      T.Nishikawa
    • Journal Title

      Physical Review D71・9

      Pages: 094005

  • [Book] Quark-Gluon Plamsa - from big bang to little bang --2005

    • Author(s)
      K.Yagi
    • Total Pages
      460
    • Publisher
      Cambridge University Press

URL: 

Published: 2007-04-02   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi