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2007 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  Tokyo Institute of Technology, 大学院・理工学研究科, 教授 (60144606)

Co-Investigator(Kenkyū-buntansha) 比連崎 悟  奈良女子大学, 理学部, 教授 (60283925)
国広 悌ニ  京都大学, 基礎物理学研究所, 教授 (20153314)
原田 融  大阪電気通信大学, 医療福祉工学部, 准教授 (70238187)
保坂 淳  大阪大学, 核物理研究センター, 准教授 (10259872)
初田 哲男  東京大学, 大学院・理学系研究科, 教授 (20192700)
Keywordsストレンジネス / クォーク / 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

本年度は関連する国際会議として、学術会議等の主催で「第23回原子核物理学国際会議(INPC2007)」を6月3日-8日に東京にて開催した。本研究代表者がプログラム委員長を務め、分担者ほぼ全員が参加して盛大に会議が行われた。また、昨年度に引き続き学部4年生、修士課程大学院生を対象とする「サマースクール」を開催した。若手の養成の一環として、ポスドク4名を東工大、大阪電通大学、京都大学基礎物理学研究所、奈良女子大学に配置し、研究の活性化、後継者の養成に努めた。
主な研究成果は以下の通りである。
(1)ハドロン分光 : 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、ハドロンの励起状態のQCDおよびカイラル有効理論に基づく解析で成果を挙げた。さらにBelleグループにより新しく発見されたエキゾティックなチャーム状態の解明を進めた。
(2)ハドロン物質 : K束縛原子核を初め、様々なエキゾティック原子核の生成、構造の理論的予言を行い、JPARCでの実験の提案を進めた。また、京大、北大グループは高密度ハドロン物質の相図、性質の解明に取り組んだ。
(3)ハイパー核分光 : ハイペロン核子相互作用など一般化された核力の格子QCDによる第一原理計算に着手し、目覚ましい進展を見せた。ストレンジネス-2の一般的核力やダブルΛあるいはΞハイパー核の構造、生成反応の研究を奈良女子大、京大、大阪電通大グループで進めた。J-PARCでのDay-1実験での結果とすぐ比較できる理論的予言がどんどん生まれている。

  • Research Products

    (71 results)

All 2008 2007

All Journal Article (45 results) (of which Peer Reviewed: 45 results) Presentation (26 results)

  • [Journal Article] Finite-width effects on Delta baryons in QCD Sum Rules2008

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

      Nuclear Physics A801

      Pages: 142-153

    • Peer Reviewed
  • [Journal Article] Quark condensates in the chiral bag with the NJL interaction2008

    • Author(s)
      S. Yasui, A. Hosaka, M. Oka
    • Journal Title

      Physical Review D77

      Pages: 054007

    • Peer Reviewed
  • [Journal Article] Proposal for exotic hadron search by fragmentation functions2008

    • Author(s)
      M. Hirai, S. Kumano, M. Oka, K. Sodoh
    • Journal Title

      Physical Review D77

      Pages: 017504

    • Peer Reviewed
  • [Journal Article] Meson-baryon sigma terms in QCD sum rules2008

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

      Physics Letters B659

      Pages: 176-183

    • Peer Reviewed
  • [Journal Article] Λ-hypernuclei in phenomenological nuclear forces2008

    • Author(s)
      A. Arai, M. Oka, S. Yasui
    • Journal Title

      Progress of Theoretical Physics 119

      Pages: 103-115

    • Peer Reviewed
  • [Journal Article] Photon indued Lambda(1520) production and the role of the K^*exchange2008

    • Author(s)
      Hiroshi Toki, Carmen Garcia-Recio, Juan Nieves
    • Journal Title

      Physical Review D 77

      Pages: 034001

    • Peer Reviewed
  • [Journal Article] Local versus nonlocal α αinteraction in 3 α description of ^<12>C2008

    • Author(s)
      Y. Suzuki
    • Journal Title

      Physics Letter B B659

      Pages: 160-164

    • Peer Reviewed
  • [Journal Article] Addendum to triton and hypertriton binding energies calculated from SU_6 quark-model baryon-baryon interactions2008

    • Author(s)
      Y. Fujiwara
    • Journal Title

      Physical Review C 77

      Pages: 027001 : 1-4

    • Peer Reviewed
  • [Journal Article] Isospin Properties of (K^Λ_-, N) Reactions for the Formation of Deeply-bound Antikaonic Nuclei2008

    • Author(s)
      Takahisa Koike, Toru Harada
    • Journal Title

      Nuclear Physics A 804

      Pages: 213-273

    • Peer Reviewed
  • [Journal Article] Spectral properties of massless and massive quarks coupled with massive boson at finite temperature2008

    • Author(s)
      M. Kitazawa, T. Kunihiro, K. Mitsutani and Y. Nemoto
    • Journal Title

      Physcal Review D 168

      Pages: 045034-1-16

    • Peer Reviewed
  • [Journal Article] Exotic quark sturcture of Λ(1405) and scalar nonet in QCD sum rule2007

    • Author(s)
      T. Nakamura, J. Sugiyama, N. Ishii, T. Nishikawa, M. Oka
    • Journal Title

      Physica E40

      Pages: 410-413

    • Peer Reviewed
  • [Journal Article] Mixigns of 4-quark components in light non-singlet scalar mesons in QCD sum rules2007

    • Author(s)
      J. Sugiyama, T. Nakamura, N. Ishii, T. Nishikawa, M. Oka
    • Journal Title

      Physical Review D76

      Pages: 114010

    • Peer Reviewed
  • [Journal Article] Possible ferromagnetism in the large N_c and N_f limit of quarkd matter2007

    • Author(s)
      K. Okanishi, M. Oka, S. Yasui
    • Journal Title

      Physical Review D76

      Pages: 097501

    • Peer Reviewed
  • [Journal Article] Triquark structure and isospin symmetry breaking in exotic D_s mesons2007

    • Author(s)
      S. Yasui, M. Oka
    • Journal Title

      Phys. Rev. D76

      Pages: 034009

    • Peer Reviewed
  • [Journal Article] Dynamics of Multiquark System : Mass, Width and Exotics2007

    • Author(s)
      M. Oka
    • Journal Title

      Nuclear Physics A790

      Pages: 462-466

    • Peer Reviewed
  • [Journal Article] Five-quark picture of Λ(1405) in anisotropic lattice QCD2007

    • Author(s)
      N. Ishii, T. Doi, M. Oka, H. Suganuma
    • Journal Title

      Progress of Theoretical Physics Supplement 168

      Pages: 598-601

    • Peer Reviewed
  • [Journal Article] Role of Chiral Symmetries for Baryons2007

    • Author(s)
      A. Hosaka, D. Jido, M. Oka
    • Journal Title

      Progress of Theoretical Physics Supplement 168

      Pages: 482-485

    • Peer Reviewed
  • [Journal Article] Measurement of the polarized gamma …> p …> K+ Lamada reactoin at backward angles2007

    • Author(s)
      K. Hicks et al. (15番目)
    • Journal Title

      Physical Review C 76

      Pages: 042201(R)

    • Peer Reviewed
  • [Journal Article] Light Scalar Mesons in the QCD Sum Rule2007

    • Author(s)
      Hua-Xing Chen, Atsushi Hosaka and Shi-Lin Zhu
    • Journal Title

      Progress of Theoretical Physics Supplement 168

      Pages: 186-189

    • Peer Reviewed
  • [Journal Article] Study of exotic hadrons in s-wave chiral dynamics2007

    • Author(s)
      T. Hyodo, D. Jido and A. Hosaka
    • Journal Title

      Progress of Theoretical Physics Supplement 168

      Pages: 32-35

    • Peer Reviewed
  • [Journal Article] A new candidate for non-strange pentaquarks : N(1675)2007

    • Author(s)
      S. I. Nam, K. S. Choi, A. Hosaka and H. C. Kim
    • Journal Title

      Progress of Theoretical Physics Supplement 168

      Pages: 97-100

    • Peer Reviewed
  • [Journal Article] Bottom baryons2007

    • Author(s)
      Xiang Liu, Hua-Xing Chen, Yan-Rui Liu, Atsushi Hosaka and Shi-Lin Zhu
    • Journal Title

      Physical Review D 77

      Pages: 014031

    • Peer Reviewed
  • [Journal Article] Light Scalar Tetraquark Mesons in the QCD Sum Rule2007

    • Author(s)
      Hua-Xing Chen, Atsushi Hosaka and Shi-Lin Zhu
    • Journal Title

      Physical Review D 76

      Pages: 094025

    • Peer Reviewed
  • [Journal Article] Test of the reaction mechanism for gamma N …> K Lambda (1520) using the polarized photon2007

    • Author(s)
      S. I. Nam, K. S. Choi, A. Hosaka and H. C. Kim
    • Journal Title

      Physical Review D 75

      Pages: 014027

    • Peer Reviewed
  • [Journal Article] Quantum loops in radiative decays of the a(1) and b(1) axial-vector mesons2007

    • Author(s)
      L. Roca, A. Hosaka, E. Oset
    • Journal Title

      Physics Letters B 658

      Pages: 17-26

    • Peer Reviewed
  • [Journal Article] Study of exotic hadrons in s-wave scatterings induced by chiral interaction in the flavor symmetric limit2007

    • Author(s)
      T. Hyodo, D. Jido and A. Hosaka
    • Journal Title

      Physical Review D 75

      Pages: 034002

    • Peer Reviewed
  • [Journal Article] QCD sum rule study of the masses of light tetraquark scalar mesons2007

    • Author(s)
      Hua-Xing Chen, Atsushi Hosaka, Shi-Lin Zhu
    • Journal Title

      Physics Letters B 650

      Pages: 369-372

    • Peer Reviewed
  • [Journal Article] Charge current neutrino induced coherent pion production2007

    • Author(s)
      L. Alvarez-Ruso, L. S. Geng, S. Hirenzaki, M. J. Vicente-Vacas
    • Journal Title

      Physical Review C C75

      Pages: 055501 1-11

    • Peer Reviewed
  • [Journal Article] Study of possible omega bound states in nuclei with the (gamma, p) reaction2007

    • Author(s)
      M. Kaskulov, H. Nagahiro, S. Hirenzaki, E. Oset
    • Journal Title

      Physical Review C C75

      Pages: 064616 1-10

    • Peer Reviewed
  • [Journal Article] Formation of Deeply Bound Kaonic Atoms in ($K^Λ-,N$) Reactoins2007

    • Author(s)
      J. Yamagata, H. Nagahiro, R. Kimura, S. Hirenzaki
    • Journal Title

      Physical Review C C76

      Pages: 045204 1-10

    • Peer Reviewed
  • [Journal Article] Three-body model of light nuclei with microscopic nonlocal interactions2007

    • Author(s)
      M. Theeten
    • Journal Title

      Physical Review C 76

      Pages: 054003 : 1-11

    • Peer Reviewed
  • [Journal Article] Equivalent hyperon-nucleon interactions in low-momentum space2007

    • Author(s)
      M. Kohno
    • Journal Title

      Physical Review C 76

      Pages: 064002 : 1-8

    • Peer Reviewed
  • [Journal Article] Quark-model baryon-baryon interactions and their applications to few-body systems2007

    • Author(s)
      Y. Fujiwara
    • Journal Title

      Proceedings of the IX International Conference on Hypernuclear and Strange Particle Physics (HYP2006), ed. J. Pochodzalla and T. Walcher, (Splinger-Verlag, Berlin, Heidelberug)

      Pages: 307-312

    • Peer Reviewed
  • [Journal Article] Phase diagram at finite temperature and quark density in the strong coupling limit of lattice QCD fro color SU(3)2007

    • Author(s)
      N. Kawamoto
    • Journal Title

      Physical Review D 75

      Pages: 014502(1-18)

    • Peer Reviewed
  • [Journal Article] A chiral symmetric relativistic mean field model with a logarithmic sigma potential2007

    • Author(s)
      K. Tsubakihara
    • Journal Title

      Progress of Theoretical Physics 117

      Pages: 903-921

    • Peer Reviewed
  • [Journal Article] Search for the H-Dibarion Resonance in ^<12>C(K,K^+ΛΛ X)2007

    • Author(s)
      C. J. Yoon
    • Journal Title

      Physical Review C 75

      Pages: 022201(1-5)

    • Peer Reviewed
  • [Journal Article] Strong coupling limit/region of lattice QCD2007

    • Author(s)
      A. Ohnishi
    • Journal Title

      Progress of Theoretical Physics Supplement 168

      Pages: 261-264

    • Peer Reviewed
  • [Journal Article] Phase diagram at finite temperature and quark density in the strong coupling region of lattice QCD for color SU(3)2007

    • Author(s)
      A. Ohnishi
    • Journal Title

      Journal of Physics G 34

      Pages: S655-S658

    • Peer Reviewed
  • [Journal Article] Analysis of (π^±, K^+) and (K, K^+) spectra in distorted wave impulse approximation2007

    • Author(s)
      H. Maekawa
    • Journal Title

      European Physical Journal A 33

      Pages: 269-272

    • Peer Reviewed
  • [Journal Article] Hypernuclei and nuclear matter in a chiral SU(3) RMF model2007

    • Author(s)
      K. Tsubakihara
    • Journal Title

      European Physical Journal A 33

      Pages: 295-298

    • Peer Reviewed
  • [Journal Article] Calculation of the ^Λ3He(in-flight K^Λ_-, n) Reaction for Searching the Deeply-bound K^Λ-pp State2007

    • Author(s)
      Takahisa Koike, Toru Harada
    • Journal Title

      Physics Letters B 652

      Pages: 262-268

    • Peer Reviewed
  • [Journal Article] Lattice Study of Low-lying Nonet Scalar Mesons in Quenched Approximation2007

    • Author(s)
      H. Wada, T. Kunihiro, S. Muroya, A. Nakamura, C. Nonaka, M. Sekiguchi
    • Journal Title

      Physics Letters B 652

      Pages: 250-254

    • Peer Reviewed
  • [Journal Article] Fermionic collective modes in QGP near critical temperatures2007

    • Author(s)
      Y. Nemoto, M. Kitazawa, T. Koide, T. Kunihiro
    • Journal Title

      Prog. Theor. Phys. Supplement 168

      Pages: 385-388

    • Peer Reviewed
  • [Journal Article] Low Mass Scalar Mesons and Related Topics2007

    • Author(s)
      T. Kunihiro
    • Journal Title

      Prog. Theor. Phys. Supplement 168

      Pages: 156-159

    • Peer Reviewed
  • [Journal Article] In-medium Pions and Partial Restoration of Chiral Symmetry : A Model-independent analysis2007

    • Author(s)
      D. Jido, T. Hatsuda and T. Kunihiro
    • Journal Title

      Prog. Theor. Phys. Supplement 168

      Pages: 478-481

    • Peer Reviewed
  • [Presentation] 有限温度におけるクォーク準粒子描像の変容と軽粒子生成率への効果2008

    • Author(s)
      三ツ谷和也、北沢正清、国広悌二、根本幸雄
    • Organizer
      日本物理学会第63回年次大会
    • Place of Presentation
      近畿大学
    • Year and Date
      2008-03-26
  • [Presentation] QCD和則によるバリオンのエキゾティックなクォーク構造の研究2008

    • Author(s)
      中村貴之, Philipp Guber, 岡真
    • Organizer
      日本物理学会第63回年次大会
    • Place of Presentation
      近畿大学
    • Year and Date
      2008-03-25
  • [Presentation] 格子QCDを用いた、メソン-バリオン結合定数の研究2008

    • Author(s)
      高橋徹, Guray Erkol, 岡真
    • Organizer
      日本物理学会第63回年次大会
    • Place of Presentation
      近畿大学
    • Year and Date
      2008-03-25
  • [Presentation] 破砕関数によるf0(980)の内部構造の検証2008

    • Author(s)
      平井正紀, 熊野俊三, 岡真, 須藤和敬
    • Organizer
      日本物理学会第63回年次大会
    • Place of Presentation
      近畿大学
    • Year and Date
      2008-03-25
  • [Presentation] Chiral structure of three-quark baryons and their effective lagrangians2008

    • Author(s)
      保坂淳
    • Organizer
      日本物理学会
    • Place of Presentation
      近畿大学
    • Year and Date
      2008-03-25
  • [Presentation] クォーク模型バリオン間相互作用のrenormalized RGM kernelを用いたG-行列計算とその軽いΛハイパー核への応用2008

    • Author(s)
      藤原義和
    • 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
  • [Presentation] Hypernuclei and dense matter in RMF model with a chiral SU(3) potential2007

    • Author(s)
      K. Tsubakihara
    • Organizer
      10th Int. Symp. on Origin of Matter and Evolution of Galaxies (OMEG07)
    • Place of Presentation
      Sapporo, Japan
    • Year and Date
      2007-12-05
  • [Presentation] Relativistic EOS of Supernova Matter with Hyperons2007

    • Author(s)
      A. Ohnishi
    • Organizer
      10th Int. Symp. on Origin of Matter and Evolution of Galaxies (OMEG07)
    • Place of Presentation
      Sapporo, Japan
    • Year and Date
      2007-12-05
  • [Presentation] How shall we determine the number of quarks in hadrons?2007

    • Author(s)
      Makoto OKA
    • Organizer
      APCTP Focus Program on Physics at RHIC
    • Place of Presentation
      Asia Pacific Center for Theoretical Physics, Pohan, Korea
    • Year and Date
      2007-12-04
  • [Presentation] Role of symmetries in Photoproductions of hadrons kaons and hyperons2007

    • Author(s)
      Atsushi Hosaka
    • Organizer
      APCTP workshop on Hadron Physics at RHIC
    • Place of Presentation
      ポハン、韓国
    • Year and Date
      2007-12-03
  • [Presentation] Anomolous contributions to kaon photoproduction2007

    • Author(s)
      保坂淳
    • Organizer
      研究会ストレンジネスで探るクォーク多体系
    • Place of Presentation
      仙台秋保
    • Year and Date
      2007-11-26
  • [Presentation] Brown-Rho Scaling in the Strong Coupling Lattice QCD2007

    • Author(s)
      A. Ohnishi
    • Organizer
      Workshop on Chiral Symmetry in Hadron and Nuclear Physics (Chira107)
    • Place of Presentation
      Osaka, Japan
    • Year and Date
      2007-11-14
  • [Presentation] Test of flavor symmetry in Photoproductions of hyperons2007

    • Author(s)
      Atsushi Hosaka
    • Organizer
      International workshop on chiral dynamics and light flavor physics
    • Place of Presentation
      北京大学
    • Year and Date
      2007-09-29
  • [Presentation] クォーク・ハドロン物理の展望と国際滞在型プログラム2007

    • Author(s)
      国広悌二
    • 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
      2007-09-24
  • [Presentation] 5クォーク成分を取り入れたQCD和則によるバリオンのカイラル対称性の研究2007

    • Author(s)
      中村貴之、岡真
    • 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
      2007-09-22
  • [Presentation] Lattice QCD study of the axial charge of N(1535) with two flavors of dynamical quarks2007

    • Author(s)
      高橋徹、国広悌二
    • 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
      2007-09-22
  • [Presentation] Meson-Baryon Sigma terms in QCD sum rules2007

    • Author(s)
      Guray Erkol, Makoto Oka
    • 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
  • [Presentation] Renormalized RGMによるクォーク模型バリオン間相互作用2007

    • Author(s)
      藤原義和
    • 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
  • [Presentation] 中性子過剰ハイパー核の生成2007

    • Author(s)
      原田融, 梅谷篤史, 平林義治
    • Organizer
      日本物理学会第62回年次大会
    • Place of Presentation
      北海道大学(札幌市)
    • Year and Date
      2007-09-21
  • [Presentation] 有限質量フェルミオンの有限温度における準粒子描像-複素ポールの振舞-2007

    • Author(s)
      三ツ谷和也, 北沢正清、国広悌二、根本幸雄
    • 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
  • [Presentation] 有限質量クォークによるカイラル層転移まわりのクォークスペクトル2007

    • Author(s)
      根本幸雄, 北沢正清、国広悌二、三ツ谷和也
    • 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
  • [Presentation] ハドロン反応2007

    • Author(s)
      保坂淳
    • Organizer
      KEKスクール(講師)
    • Place of Presentation
      高エネルギー加速器研究機構
    • Year and Date
      2007-09-11
  • [Presentation] Meson mass spectrum at finite temperature and density in the strong coupling limit of lattice QCD for color SU(3)2007

    • Author(s)
      K. Miura
    • Organizer
      25th International Symposium on Lattice Field Theory
    • Place of Presentation
      Regensburg, Germany
    • Year and Date
      2007-08-03
  • [Presentation] Photoproductions of hyperons and resonances2007

    • Author(s)
      Atsushi Hosaka
    • Organizer
      RCNP研究会Heavy quark dynamics
    • Place of Presentation
      大阪大学
    • Year and Date
      2007-07-07
  • [Presentation] Reaction mechanism for Photoproductions of hyperons and resonances2007

    • Author(s)
      Atsushi Hosaka
    • Organizer
      International conference Baryons07
    • Place of Presentation
      ソウル大学 韓国
    • Year and Date
      2007-06-11
  • [Presentation] Reaction mechanism for Photoproductions of kaons, hyperons and resonances2007

    • Author(s)
      Atsushi Hosaka
    • Organizer
      International conference INPC07
    • Place of Presentation
      東京フォーラム
    • Year and Date
      2007-06-04

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Published: 2010-06-11   Modified: 2016-04-21  

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