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Study of exotic hadrons using lattice QCD

Research Project

Project/Area Number 17K14287
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Particle/Nuclear/Cosmic ray/Astro physics
Research InstitutionKyushu University (2019-2021)
Osaka University (2017-2018)

Principal Investigator

Ikeda Yoichi  九州大学, 理学研究院, 准教授 (90548893)

Project Period (FY) 2017-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2020: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2019: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords格子QCD / エキゾチックハドロン / ハドロン間相互作用 / 機械学習 / 深層学習 / ハドロン相互作用 / 人工知能 / ハドロン物理 / ハドロン分光 / 理論核物理
Outline of Final Research Achievements

We study the structures of exotic hadrons using the first-principles calculation of Quantum Chromodynamics(QCD), which is the fundamental theory of strong interaction in physics. The method to extract the hadronic interactions using lattice QCD is extended to coupled-channel problems and applied to the possible charmed exotic hadrons, and the structures and production reactions of the exotic hadrons are investigated. In this study, we investigate the hadronic interactions on the lattice to search for the candidates of exotic hadrons such as Zc(3900) and discuss the structures. Furthermore, we study how those structures affect the experimentally obtained spectra. We also employ the deep learning to classify the quantum states of hadrons.

Academic Significance and Societal Importance of the Research Achievements

2000年代に入り、陽子や中性子に代表される通常のハドロンとは一線を画す構造を持つと期待されるエキゾチックハドロンの候補が次々と報告された。量子色力学が作り出すハドロン現象の抱負さに第一原理計算を用いて、その構造と実験データとの整合性を確かめることができた。また、機械学習を用いることで、富岳などで行われている第一原理計算をより加速することが可能になる結果も得た。それにより、ハドロン物理を基盤にした核物理や初期宇宙の理解などの進展が期待できる。

Report

(6 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (16 results)

All 2021 2020 2019 2018 2017 Other

All Int'l Joint Research (3 results) Journal Article (6 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 6 results,  Open Access: 1 results) Presentation (7 results) (of which Int'l Joint Research: 3 results,  Invited: 6 results)

  • [Int'l Joint Research] フィリピン大学(フィリピン)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] フィリピン大学(フィリピン)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] University of the Philippines Diliman(フィリピン)

    • Related Report
      2019 Research-status Report
  • [Journal Article] Classifying Near-Threshold Enhancement Using Deep Neural Network2021

    • Author(s)
      Sombillo Denny Lane B.、Ikeda Yoichi、Sato Toru、Hosaka Atsushi
    • Journal Title

      Few-Body Systems

      Volume: 62 Issue: 3 Pages: 52-52

    • DOI

      10.1007/s00601-021-01642-z

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Model independent analysis of coupled-channel scattering: A deep learning approach2021

    • Author(s)
      Sombillo Denny Lane B.、Ikeda Yoichi、Sato Toru、Hosaka Atsushi
    • Journal Title

      Physical Review D

      Volume: 104 Issue: 3 Pages: 036001-036001

    • DOI

      10.1103/physrevd.104.036001

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Classifying the pole of an amplitude using a deep neural network2020

    • Author(s)
      Denny Lane B. Sombillo, Yoichi Ikeda, Toru Sato, Atsushi Hosaka
    • Journal Title

      Physical Review D

      Volume: 102 Issue: 1 Pages: 016024-016024

    • DOI

      10.1103/physrevd.102.016024

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Λc N interaction from lattice QCD and its application to Λc hypernuclei2018

    • Author(s)
      T. Miyamoto, S. Aoki, T. Doi, S. Gongyo, T. Hatsuda, Y. Ikeda, T. Inoue, T. Iritani, N. Ishii, D. Kawai, K. Murano, H. Nemura and K. Sasaki (HAL QCD Collaboration)
    • Journal Title

      Nucl. Phys. A

      Volume: 971 Pages: 113-113

    • DOI

      10.1016/j.nuclphysa.2018.01.015

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Tetraquark candidate $Z_c$(3900) from coupled-channel scattering - how to extract hadronic interactions? -2018

    • Author(s)
      Yoichi Ikeda
    • Journal Title

      EPJ Web Conference

      Volume: 175 Pages: 01023-01023

    • DOI

      10.1051/epjconf/201817501023

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] The tetraquark candidate $Z_c$(3900) from dynamical lattice QCD simulations2018

    • Author(s)
      Yoichi Ikeda
    • Journal Title

      Journal of Physics G

      Volume: 45 Issue: 2 Pages: 024002-024002

    • DOI

      10.1088/1361-6471/aa9afd

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Presentation] ニューラルネットワークによるS行列の極の分類 (I)2020

    • Author(s)
      池田陽一
    • Organizer
      日本物理学会2020年秋季大会(オンライン)
    • Related Report
      2020 Research-status Report
  • [Presentation] Lattice QCD analysis of charmed tetraquark candidates2019

    • Author(s)
      Yoichi Ikeda
    • Organizer
      the International Molecule-type Workshop ”Frontiers in Lattice QCD and related topics”
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Exotic hadrons from lattice2019

    • Author(s)
      Yoichi Ikeda
    • Organizer
      シミュレーションによる宇宙の基本法則と進化の解明に向けて (QUCS 2019)
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] Hadron interactions from lattice QCD -- application to hadron resonances --2018

    • Author(s)
      Y. Ikeda
    • Organizer
      5th APS-JPS Joint Meeting (HAW18)
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] Hadron interactions from lattice QCD -- application to hadron resonances --2018

    • Author(s)
      Y. Ikeda
    • Organizer
      The 22nd International Conference on Few-Body Problems in Physics (FB22)
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] Tetraquark candidate Zc(3900) from coupled-channel scattering - how to extract hadronic interactions? -2017

    • Author(s)
      Yoichi Ikeda
    • Organizer
      35th Internationall Symposium on Lattice Field Theory (Lattice2017)
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Coupled-channel scattering on the lattice and its application to Zc(3900)2017

    • Author(s)
      Yoichi Ikeda
    • Organizer
      XVII International Conference on Hadron Spectroscopy and Structure
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited

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Published: 2017-04-28   Modified: 2023-01-30  

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