New aspect of particle physics using lattice chiral fermion

2008 Fiscal Year Final Research Report

• Project/Area Number: 18740167
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: High Energy Accelerator Research Organization
• Principal Investigator: YAMADA Norikazu High Energy Accelerator Research Organization, 素粒子原子核研究所, 助教 (50399432)
• Project Period (FY): 2006 – 2008
• Keywords: 素粒子論 / 格子QCD / カイラル対称性 / 大規模数値シミュレーション

Research Abstract

厳密なカイラル対称性を持つフェルミオン形式で記述されるクォーク場の動的効果を取り入れた数値シミュレーションを行い、中性K 中間子の混合振幅の決定、S-parameterの決定等を行った。これとは別に、QCDのゲージ配位にQEDの配位を結合し、従来の格子QCDでは評価できないupとdownクォークの質量差をより現実的な2-フレーバー理論で予言した。

Research Products

• [Journal Article] for JLQCD CollaborationH, "S-parameter and pseudo Nambu Goldstone boson mass fromlattice QCD" (2008)
  • Author(s): E. ShintaniH, HS. AokiH, HH. FukayaH, HS.HashimotoH, HT. KanekoH, HH. MatsufuruH, HT. OnogiH, HUN. YamadaUH
  • Journal Title: for JLQCD CollaborationH, "S-parameter and pseudo Nambu Goldstone boson mass fromlattice QCD" 101 Pages: 202004
  • Peer Reviewed
• [Journal Article] "BK with two flavors of dynamical overlap fermions" (2008)
  • Author(s): HS. AokiH, HH. FukayaH, HS. HashimotoH, HJ. NoakiH, HT. KanekoH, HH. MatsufuruH, HT.OnogiH, HUN. YamadaUH
  • Journal Title: Physical Review D77 Pages: 094503
  • Peer Reviewed
• [Journal Article] HThomas BlumH, HTakumi DoiH, HMasashi HayakawaH, HTaku IzubuchiH, HUNorikazu YamadaUH (2007)
  • Author(s): HThomas BlumH, HTakumi DoiH, HMasashi HayakawaH, HTaku IzubuchiH, HUNorikazu YamadaUH
  • Journal Title: Physical Review D76 Pages: 114508
  • Peer Reviewed
• [Presentation] "シュレディンガー汎関数を用いた10フレーバーQCDにおける結合定数のスケール依存性の計算" (2009)
  • Author(s): 山田 憲和
  • Organizer: 日本物理学会
  • Place of Presentation: 立教大学
  • Year and Date: 2009-03-27
• [Presentation] "Pseudo-NG boson mass and S-parameter from lattice QCD" (2008)
  • Author(s): 山田 憲和
  • Organizer: 日本物理学会
  • Place of Presentation: 近畿大学
  • Year and Date: 2008-03-24
• [Presentation] "Lattice calculation of vacuum polarization" (2007)
  • Author(s): 山田 憲和
  • Organizer: Workshop "Towards the precise prediction of CP violation"
  • Place of Presentation: 京都大学基礎物理学研究所
  • Year and Date: 2007-10-22
• [Presentation] "BK with dynamical overlap fermions" (2007)
  • Author(s): 山田 憲和
  • Organizer: 日本物理学会
  • Place of Presentation: 北海道大学
  • Year and Date: 2007-09-21
• [Presentation] "BK with dynamical overlap fermions" (2007)
  • Author(s): 山田 憲和
  • Organizer: International Conference "Lattice 2007"
  • Place of Presentation: レーゲンズブルグ大学(ドイツ)
  • Year and Date: 2007-08-02