Explication of new hadron states by lattice QCD

• Project/Area Number: 15K05068
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: University of Tsukuba
• Principal Investigator: NAMEKAWA Yusuke 筑波大学, 数理物質系, 研究員 (00377946)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000); Fiscal Year 2017: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2016: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
• Keywords: 計算物理

Outline of Final Research Achievements

The purpose of this work is explication of new hadron states by lattice QCD. Materials consist of hadrons, and hadrons are made up with quarks. Using a fundamental theory of quarks, Quantum Chromo Dynamics(QCD), quantitative analysis of hadrons is performed.
For this purpose, a simulation code is developed. It is merged to a lattice QCD common code. Then, on very realistic gauge configurations generated by K-computer, spectrum, renormalization factors, and form factor are calculated. Furthermore, a half off-shell amplitude is obtained for the world-first time.

Research Products

• [Journal Article] Charm physics by Nf=2+1 Iwasaki gauge and the six stout smeared O(a)-improved Wilson quark actions on a 96^4 lattice (2017)
  • Author(s): Y.Namekawa
  • Journal Title: PoS Volume: LATTICE2016,125 Pages: 1-7
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Electromagnetic pion form factor near physical point in Nf=2+1 lattice QCD (2017)
  • Author(s): J.Kakazu, K.-I.Ishikawa, N.Ishizuka, Y.Kuramashi, Y.Nakamura, Y.Namekawa, Y.Taniguchi, N.Ukita, T.Yamazaki, T.Yoshie
  • Journal Title: PoS Volume: LATTICE2016,160 Pages: 1-7
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Mass and Axial Current Renormalization in the Schroedinger Functional Scheme for the RG-Improved Gauge and the Stout Smeared O(a)-Improved Wilson Quark Actions (2015)
  • Author(s): K.-I.Ishikawa,N.Ishizuka,Y.Kuramashi,Y.Nakamura,Y.Namekawa,Y.Taniguchi,N.Ukita,T.Yamazaki,T.Yoshie
  • Journal Title: PoS Volume: LATTICE2015, 271 Pages: 1-7
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] 2+1 Flavor QCD Simulation on a 96^4 Lattice (2015)
  • Author(s): K.-I.Ishikawa,N.Ishizuka,Y.Kuramashi,Y.Nakamura,Y.Namekawa,Y.Taniguchi,N.Ukita,T.Yamazaki,T.Yoshie
  • Journal Title: PoS Volume: LATTICE2015, 075 Pages: 1-7
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Lattice QCD code Bridge++ on arithmetic accelerators (2015)
  • Author(s): S.Motoki,S.Aoki,T.Aoyama,K.Kanaya,H.Matsufuru,T.Miyamoto,Y.Namekawa,H.Nemura,Y.Taniguchi,S.Ueda,N.Ukita
  • Journal Title: PoS Volume: LATTICE2015, 060 Pages: 1-7
  • Peer Reviewed / Acknowledgement Compliant
• [Presentation] Scattering length from Bethe-Salpeter wave function inside the interaction range (2018)
  • Author(s): Yusuke Namekawa
  • Organizer: INT workshop "Multi-Hadron Systems from Lattice QCD" (INT 18-70W)
  • Int'l Joint Research
• [Presentation] Successful prediction to charmed single baryons and attempt on two-hadron by lattice QCD (2018)
  • Author(s): 滑川 裕介
  • Organizer: 研究会「ヘビークォークハドロンとエキゾチックハドロンの構造」
  • Invited
• [Presentation] 格子 QCD による相互作用範囲内の Bethe-Salpeter 波動関数を用いた散乱長計算 (2018)
  • Author(s): 滑川 裕介
  • Organizer: 日本物理学会 第73回年次大会
• [Presentation] Charm physics by Nf=2+1 Iwasaki gauge and the six stout smeared O(a)-improved Wilson quark actions on a 96^4 lattice (2016)
  • Author(s): Y.Namekawa
  • Organizer: 34th International Symposium on Lattice Field Theory
  • Place of Presentation: University of Southampton,United Kingdom
  • Year and Date: 2016-07-24
  • Int'l Joint Research
• [Presentation] Charm physics from realistic lattice QCD (2016)
  • Author(s): Y.Namekawa
  • Organizer: J-PARC Workshop 2016: From Exotic hadrons to QGP
  • Place of Presentation: Inha University,Korea
  • Year and Date: 2016-06-07
  • Int'l Joint Research / Invited
• [Presentation] Comparative study of topological charge in lattice QCD (2015)
  • Author(s): Yusuke Namekawa
  • Organizer: Symposium on Quarks to Universe in Computational Science(QUCS 2015)
  • Place of Presentation: Nara Kasugano International Forum IRAKA, Nara, Japan
  • Year and Date: 2015-11-04
  • Int'l Joint Research