Determination of Cabibbo-Kobayashi-Maskawa matrix elements by lattice quantum chromodynamics

• Project/Area Number: 22740138
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: University of Tsukuba
• Principal Investigator: NAMEKAWA Yusuke 筑波大学, 計算科学研究センター, 研究員 (00377946)
• Project Period (FY): 2010 – 2011
• Project Status: Completed (Fiscal Year 2011)
• Budget Amount: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000); Fiscal Year 2011: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2010: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
• Keywords: 素粒子論 / 計算物理

Research Abstract

The purpose of this work is determination of Cabibbo-Kobayashi-Maskawa matrix elements by lattice quantum chromodynamics. The Cabibbo-Kobayashi-Maskawa matrix elements are fundamental parameters of the standard theory of the elementary particle. It is important to determine the matrix elements quantitatively. We determined the matrix elements, Vcd and Vcs, using the pure leptonic decays of the D and Ds mesons. Our final results are Vcd=0.205(6)(10), Vcd=1.00(1)(4).

Research Products

• [Journal Article] ρ meson decay in 2+1 flavor lattice QCD (2011)
  • Author(s): N.Ishizuka, Y.Kuramashi, 他10名
  • Journal Title: Physical Reivew Volume: D84 Issue: 9 Pages: 94505-94505
  • DOI: 10.1103/physrevd.84.094505
  • NAID: 120007137355
  • Peer Reviewed
• [Journal Article] Charm quark system at the physical point of 2+1 flavor lattice QCD (2011)
  • Author(s): Y.Namekawa, K.Yoshinobu, 他10名
  • Journal Title: Physical Review Volume: D84 Issue: 7 Pages: 1-11
  • DOI: 10.1103/physrevd.84.074505
  • Peer Reviewed
• [Journal Article] Charm quark system on the physical point in 2+1 flavor lattice QCD (2011)
  • Author(s): Y.Namekawa
  • Journal Title: PoS Pages: 1-1
  • NAID: 120007137375
  • URL: http://pos.sissa.it/archive/conferences/139/132/Lattice%202011_132.pdf
• [Journal Article] Non-perturbative renormalization of quark mass in Nf=2+1 QCD with the Schroedinger functional scheme (2010)
  • Author(s): PACS-CS collaboration (S.Aoki, K.-I.Ishikawa, N.Ishizuka, T.Izubuchi, K.Kanaya, Y.Kuramashi, K.Murano, Y.Namekawa, M.Okawa, Y.Taniguchi, A.Ukawa, N.Ukita, T.Yoshie)
  • Journal Title: JHEP Volume: 08 Issue: 8 Pages: 101-101
  • DOI: 10.1007/jhep08(2010)101
  • Peer Reviewed
• [Journal Article] Calculation of rho meson decay width from the PACS-CS configurations (2010)
  • Author(s): S. Aoki, K.-I. Ishikawa, N. Ishizuka, T. Izubuchi, K. Kanaya, Y. Kuramashi, Y. Namekawa, M. Okawa, Y. Taniguchi, A. Ukawa, N. Ukita, T. Yamazaki, T. Yoshie
  • Journal Title: PoS
  • URL: http://pos.sissa.it//archive/conferences/105/108/Lattice%202010_108.pdf
  • Peer Reviewed
• [Journal Article] Non-perturbative renormalization of quark mass in N_f=2+1 QCD with the Schroedinger functional scheme (2010)
  • Author(s): PACS-CS Collaboration : S.Aoki, et al
  • Journal Title: JHEP Volume: 1008 Pages: 101-101
  • Peer Reviewed
• [Journal Article] Calculation of rho meson decay width from the PACS-CS configurations (2010)
  • Author(s): PACS-CS Collaboration : S.Aoki, et al
  • Journal Title: PoS Volume: LAT2010 Pages: 108-108
• [Presentation] Charm quark physics from lattice QCD (2012)
  • Author(s): 滑川裕介
  • Organizer: KEK Flavor Factory Workshop
  • Place of Presentation: KEK(茨城県)
  • Year and Date: 2012-03-08
• [Presentation] Charm quark physics from lattice QCD (2012)
  • Author(s): 滑川裕介
  • Organizer: Elucidation of New Hadron with a Variety of Flavors
  • Place of Presentation: 大阪大学(大阪府)
  • Year and Date: 2012-02-20
• [Presentation] Charm quark physics from lattice QCD (2012)
  • Author(s): Y. Namekawa
  • Organizer: KEK flavor factory workshop
  • Place of Presentation: KEK, Japan, Mar
• [Presentation] Charm quark physics from lattice QCD (2012)
  • Author(s): Y. Namekawa
  • Organizer: Elucidation of new hadrons with a variety of flavors
  • Place of Presentation: Osaka University, Japan
• [Presentation] Charm quark physics from lattice QCD (2011)
  • Author(s): 滑川裕介
  • Organizer: HPCI workshop "Expanding the Horizon of Theoretical Particle Physics through Computational Methods"
  • Place of Presentation: KEK(茨城県)
  • Year and Date: 2011-12-19
• [Presentation] Charm quark physics from lattice QCD (2011)
  • Author(s): 滑川裕介
  • Organizer: 素核宇宙融合による計算基礎物理学の進展
  • Place of Presentation: 合歓の郷(三重県)
  • Year and Date: 2011-12-03
• [Presentation] Charm quark physics from lattice QCD (2011)
  • Author(s): 滑川裕介
  • Organizer: Hadron Structure and Interactions
  • Place of Presentation: 大阪大学(大阪府)
  • Year and Date: 2011-11-25
• [Presentation] 物理点における2+1フレーバー格子QCDシミュレーションによるチャームクォーク系の研究 (2011)
  • Author(s): 滑川裕介
  • Organizer: 日本物理学会
  • Place of Presentation: 弘前大学(青森県)
  • Year and Date: 2011-09-16
• [Presentation] Charm quark system on the physical point in 2+1 flavor lattice QCD (2011)
  • Author(s): 滑川裕介
  • Organizer: The XXIX International Symposium on Lattice Field Theory
  • Place of Presentation: The Village at Squaw Valley(USA)
  • Year and Date: 2011-07-11
• [Presentation] Charm quark system on the physical point in 2+1 flavor lattice QCD (2011)
  • Author(s): 滑川裕介
  • Organizer: 新学術領域「素核宇宙融合」×「新ハドロン」クロスオーバー研究会
  • Place of Presentation: 理化学研究所、計算科学研究機構(兵庫県)
  • Year and Date: 2011-06-23
• [Presentation] Charm quark system on the physical point in 2+1 flavor lattice QCD (2011)
  • Author(s): Y. Namekawa
  • Organizer: New hadron workshop 2010
  • Place of Presentation: RIKEN Wako campus, Japan, Feb
  • Year and Date: 2011-03-28
• [Presentation] Charm quark system on the physical point in 2+1 flavor lattice QCD (2011)
  • Author(s): 滑川裕介
  • Organizer: "New Hadrons" workshop 2010
  • Place of Presentation: 理化学研究所、埼玉県
  • Year and Date: 2011-03-01
• [Presentation] Charm quark physics from lattice QCD (2011)
  • Author(s): Y. Namekawa
  • Organizer: Expanding the horizon of theoretical particle physics through computational methods
  • Place of Presentation: KEK, Japan
• [Presentation] Charm quark physics from lattice QCD (2011)
  • Author(s): 滑川裕介
  • Organizer: 素核宇宙融合による計算基礎物理学の進展
  • Place of Presentation: 合歓の郷、三重
• [Presentation] Charm quark physics from lattice QCD (2011)
  • Author(s): Y. Namekawa
  • Organizer: Hadron structure and interactions
  • Place of Presentation: RCNP, Japan
• [Presentation] 物理点における2+1フレーバー格子QCDシミュレーションによるチャームクォーク系の研究 (2011)
  • Author(s): 滑川裕介
  • Organizer: 日本物理学会
  • Place of Presentation: 弘前大学、青森
• [Presentation] Charm quark system on the physical point in 2+1 flavor lattice QCD (2011)
  • Author(s): Y. Namekawa
  • Organizer: The XXIX International symposium on Lattice Field Theory
  • Place of Presentation: The XXIX International symposium on Lattice Field Theory
• [Presentation] Charm quark system on the physical point in 2+1 flavor lattice QCD (2011)
  • Author(s): 滑川裕介
  • Organizer: 新学術領域「素核宇宙融合」×「新ハドロン」クロスオーバー研究会
  • Place of Presentation: 理化学研究所・計算科学研究機構、神戸
• [Presentation] Charm quark system on the physical point in 2+1 flavor lattice QCD (2010)
  • Author(s): 滑川裕介
  • Organizer: Lattice QCD confronts experiments, Japanese-German Seminar 2010
  • Place of Presentation: 三島商工会議所会館、静岡県
  • Year and Date: 2010-11-05
• [Presentation] Charm quark system on the physical point in 2+1 flavor lattice QCD (2010)
  • Author(s): Y. Namekawa
  • Organizer: International conference Lattice QCD confronts experiments
  • Place of Presentation: Mishima, Japan