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Study on exotic resonances with the heavy quark-antiquark pair

Research Project

Project/Area Number 16K05361
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Particle/Nuclear/Cosmic ray/Astro physics
Research InstitutionJapan College of Social Work

Principal Investigator

Takeuchi Sachiko  日本社会事業大学, 社会福祉学部, 教授 (90251503)

Co-Investigator(Kenkyū-buntansha) 瀧澤 誠  昭和薬科大学, 薬学部, 講師 (90297044)
Project Period (FY) 2016-10-21 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2019: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2018: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2016: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywordsエキゾチックハドロン / エキゾチックバリオン / 重いクォークを含む物理 / カラー8重項 / ハドロン物理学 / ペンタクォーク / チャームクォーク系 / ボトムクォーク系 / カラー8重項のバリオン / ヘビークォーク / 量子色力学
Outline of Final Research Achievements

The exotic hadrons such as the hidden-charm or hidden-bottom pentaquarks, with and without strangeness, and the hidden-charm or hidden-bottom exotic mesons are investigated in this study. The employed models are the quark cluster model and the hadron model that includes the major modes of quarks effectively.
We elucidated that the color-octet light quarks inside the two-hadron systems induces an attraction between the hadrons in the specific channels. This attractive force comes from the spectroscopic factor and the color-spin term, which are the effects of the quark degrees of freedom. Our study show that, with the help of the tensor coupling from the one-pion-exchange, this quark effects can explain, for example, the double peaks of the pentaquark found in the final J/ψN fraction in the B decay by the LHCb experiments. This picture also predicts the presence of other exotic hadrons. If they are observed, it will clearly show the roles of the quarks in the low energy QCD phenomena.

Academic Significance and Societal Importance of the Research Achievements

本研究は、我々の身の回りの物質を作る力の1つである量子色力学の複雑な相互作用についての理解を深めたものである。
従来のハドロン実験では、主に原子核やパイパー核など、アップ・ダウン・ストレンジという質量の軽いクォークによって構成される物質が調べられてきたが、最近では、チャームやボトムという重いクォークを含んだ物質が実験で観測され始めている。この研究は、後者の物質から、粒子がクォーク多体系であることと構成粒子の質量が違うことを用いて、軽いクォークのカラー8重項という量子色力学に特徴的な状態の影響を取り出すことが出来ることと、それが実際に観測されている可能性を示したものである。

Report

(5 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (37 results)

All 2020 2019 2018 2017 Other

All Int'l Joint Research (2 results) Journal Article (9 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 5 results,  Open Access: 8 results) Presentation (26 results) (of which Int'l Joint Research: 9 results,  Invited: 7 results)

  • [Int'l Joint Research] Istituto Nazionale di Fisica Nucleare(イタリア)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] Istituto Nazionale di Fisica Nucleare(イタリア)

    • Related Report
      2018 Research-status Report
  • [Journal Article] Pc pentaquarks with chiral tensor and quark dynamics2020

    • Author(s)
      Yamaguchi Yasuhiro、Garcia-Tecocoatzi Hugo、Giachino Alessandro、Hosaka Atsushi、Santopinto Elena、Takeuchi Sachiko、Takizawa Makoto
    • Journal Title

      Physical Review D

      Volume: 101 Issue: 9 Pages: 1-7

    • DOI

      10.1103/physrevd.101.091502

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Heavy hadronic molecules with pion exchange and quark core couplings: a guide for practitioners2020

    • Author(s)
      Yamaguchi Yasuhiro、Hosaka Atsushi、Takeuchi Sachiko、Takizawa Makoto
    • Journal Title

      Journal of Physics G: Nuclear and Particle Physics

      Volume: 47 Issue: 5 Pages: 053001-053001

    • DOI

      10.1088/1361-6471/ab72b0

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] On the origin of Y(4260) and the JPC=1-- exotic mesons2019

    • Author(s)
      Sachiko Takeuchi and Makoto Takizawa
    • Journal Title

      Proceedings of Science

      Volume: Confinement2018

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] HIDDEN-CHARM AND BOTTOM PENTAQUARK STATES2018

    • Author(s)
      Santopinto Elena、Yamaguchi Yasuhiro、Giachino Alessandro、Hosaka Atsushi、Takeuchi Sachiko、Takizawa Makoto
    • Journal Title

      Proceedings of Science

      Volume: BEAUTY2018 Pages: 065-065

    • DOI

      10.22323/1.326.0065

    • Related Report
      2018 Research-status Report
    • Open Access / Int'l Joint Research
  • [Journal Article] Hidden-charm and -bottom pentaquarks as meson-baryon molecules coupled to the five-quark states2018

    • Author(s)
      Giachino Alessandro、Yamaguchi Yasuhiro、Hosaka Atsushi、Santopinto Elena、Takeuchi Sachiko、Takizawa Makoto
    • Journal Title

      Proceedings of Science

      Volume: LHCP2018 Pages: 082-082

    • DOI

      10.22323/1.321.0082

    • Related Report
      2018 Research-status Report
    • Open Access / Int'l Joint Research
  • [Journal Article] Y(4260) and φ(2170) as exotic vector mesons2018

    • Author(s)
      Sachiko Takeuchi and Makoto Takizawa
    • Journal Title

      Proceedings of Science

      Volume: Hadron 2017

    • Related Report
      2017 Research-status Report
    • Open Access
  • [Journal Article] Hidden-charm and bottom meson-baryon molecules coupled with five-quark states2017

    • Author(s)
      Y. Yamaguchi, A. Giachino, A. Hosaka, E. Santopinto, S. Takeuchi, M. Takizawa
    • Journal Title

      Physical Revivew D

      Volume: 96 Issue: 11 Pages: 114031-114031

    • DOI

      10.1103/physrevd.96.114031

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] The ccbar Pentaquarks by a Quark Model2017

    • Author(s)
      Sachiko Takeuchi and Makoto Takizawa
    • Journal Title

      JPS Conference Proceedings

      Volume: 13

    • DOI

      10.7566/jpscp.13.020044

    • Related Report
      2017 Research-status Report 2016 Research-status Report
    • Open Access
  • [Journal Article] The hidden charm pentaquarks are the hidden color-octet uud baryons?2017

    • Author(s)
      Sachiko Takeuchi and Makoto Takizawa
    • Journal Title

      Physics Letters B

      Volume: 764 Pages: 254-259

    • DOI

      10.1016/j.physletb.2016.11.034

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] バリオン-メソン散乱におけるカラー8重項共鳴の研究2020

    • Author(s)
      竹内幸子
    • Organizer
      日本物理学会 第75回年次大会(2020年)
    • Related Report
      2019 Annual Research Report
  • [Presentation] X(3872) by a quark-hadron hybrid model with the OPEP S-D-wave coupling2020

    • Author(s)
      Sachiko Takeuchi
    • Organizer
      Workshop on “Physics of heavy-quark and exotic hadrons”
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 重いクォーク対を含むストレンジネス・ペンタクォークについて2019

    • Author(s)
      竹内幸子
    • Organizer
      日本物理学会 2019年秋季大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 5クォーク状態との結合を含むヘビークォーク有効模型によるヒドゥンチャームペンタクォークの研究2019

    • Author(s)
      瀧澤誠
    • Organizer
      日本物理学会 2019年秋季大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Strange pentaquarks with a hidden heavy quark-antiquark pair2019

    • Author(s)
      Sachiko Takeuchi
    • Organizer
      18th International Conference on Hadron Spectroscopy and Structure (HADRON 2019)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Role of the color-octet configurations in the exotic hadrons2019

    • Author(s)
      Sachiko Takeuchi
    • Organizer
      Workshop on Exotic hadrons from the quark model and new aspect of QCD
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] Heavy Quark Spin Symmetry with Chiral Tensor Dynamics in the Light of the Recent LHCb Pentaquarks2019

    • Author(s)
      M. Takizawa
    • Organizer
      Diquark correlations in Hadron Physics: Origin, Impact and Evidence
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] On the origin of Y(4260) and the JPC=1-- exotic mesons2018

    • Author(s)
      Sachiko Takeuchi
    • Organizer
      XIII Quark Confinement and the Hadron Spectrum
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Structure of the Hidden-Charm Exotic Vector Mesons2018

    • Author(s)
      Makoto Takizawa
    • Organizer
      8th International Conference on Quarks and Nuclear Physics
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Structure of the Y(4260) and the JP=1- hidden-charm or hidden-strange exotic mesons2018

    • Author(s)
      Sachiko Takeuchi
    • Organizer
      5th Joint Meeting of the APS Division of Nuclear Physics and the Physical Society of Japan
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Mixing effects of the charmonium and four-quark components in Y(4260)2018

    • Author(s)
      Makoto Takizawa
    • Organizer
      5th Joint Meeting of the APS Division of Nuclear Physics and the Physical Society of Japan
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] qqbar-QQbar systems by a quark hadron hybrid model2018

    • Author(s)
      Sachiko Takeuchi
    • Organizer
      Hadron Spectroscopy Cafe
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] JP=1-のqqbar-QQbar系の構造について2018

    • Author(s)
      竹内幸子
    • Organizer
      日本物理学会
    • Related Report
      2017 Research-status Report
  • [Presentation] Effects of the instanton induced interaction on the H-dibaryon resonance2018

    • Author(s)
      Sachiko Takeuchi
    • Organizer
      Structures of Heavy Quark and Exotic Hadrons
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] Pc, Y(4260), and X(3872) by a quark-hadron hybrid model2018

    • Author(s)
      Sachiko Takeuchi
    • Organizer
      Structures of Heavy Quark and Exotic Hadrons
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] Y(4260)とφ(2170)の4クォーク構造について その12017

    • Author(s)
      竹内幸子
    • Organizer
      日本物理学会
    • Related Report
      2017 Research-status Report
  • [Presentation] Y(4260)とφ(2170)の4クォーク構造について その22017

    • Author(s)
      瀧澤誠
    • Organizer
      日本物理学会
    • Related Report
      2017 Research-status Report
  • [Presentation] ハドロン分子における5クォーク状態が作る近距離引力2017

    • Author(s)
      山口康宏
    • Organizer
      日本物理学会
    • Related Report
      2017 Research-status Report
  • [Presentation] Y(4260) and Phi(2170) as exotic vector mesons2017

    • Author(s)
      Sachiko Takeuchi
    • Organizer
      XVII International Conference on Hadron Spectroscopy and Structure (Hadron 2017)
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Y(4260) is a qqbar ccbar resonance?2017

    • Author(s)
      Sachiko Takeuchi
    • Organizer
      TITech-Uppsala Joint symposium
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Y(4260)とφ(2170)の4クォーク構造2017

    • Author(s)
      瀧澤誠
    • Organizer
      KEK理論センター研究会『ハドロン・原子核物理の理論研究最前線 2017』
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] 反D中間子とチャームバリオンによるハドロン分子状態の解析2017

    • Author(s)
      山口康宏, Alessandro Giachino, 竹内幸子, Elena Santopinto, 瀧澤誠, 保坂淳
    • Organizer
      日本物理学会 第72回年次大会
    • Place of Presentation
      大阪大学
    • Related Report
      2016 Research-status Report
  • [Presentation] クォーク模型から導出したq3ccペンタクォーク共鳴チャネルのバリオン メソン相互作用2017

    • Author(s)
      竹内幸子, 瀧澤誠
    • Organizer
      日本物理学会 第72回年次大会
    • Place of Presentation
      大阪大学
    • Related Report
      2016 Research-status Report
  • [Presentation] Y(4260)の構造について2017

    • Author(s)
      瀧澤誠, 竹内幸子
    • Organizer
      日本物理学会 第72回年次大会
    • Place of Presentation
      大阪大学
    • Related Report
      2016 Research-status Report
  • [Presentation] Y(4260) is an authentic resonance?2017

    • Author(s)
      Sachiko Takeuchi
    • Organizer
      KEK theory center workshop on Hadron and Nuclear Physics in 2017
    • Place of Presentation
      高エネルギー加速器研究機構
    • Related Report
      2016 Research-status Report
  • [Presentation] Heavy pentaquark systems by the quark model2017

    • Author(s)
      Sachiko Takeuchi
    • Organizer
      Structures and Interactions of Heavy Quark Hadrons
    • Place of Presentation
      高エネルギー加速器研究機構東海キャンパス
    • Related Report
      2016 Research-status Report

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Published: 2016-10-24   Modified: 2021-02-19  

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