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

2011 Fiscal Year Final Research Report

• 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
• Keywords: 素粒子論

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] Rho meson decay in 2+1 flavor lattice QCD (2011)
  • 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: Phys. Rev
  • DOI: DOI:10.1103/PhysRevD.84.094505
  • Peer Reviewed
• [Journal Article] Charm quark system at the physical point of 2+1 flavor lattice QCD (2011)
  • Author(s): Y. Namekawa, S. Aoki, K.-I. Ishikawa, N. Ishizuka, T. Izubuchi, K. Kanaya, Y. Kuramashi, M. Okawa, Y. Taniguchi, A. Ukawa, N. Ukita, T. Yoshie
  • Journal Title: Phys. Rev Volume: 84
  • DOI: 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
  • 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): 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
  • DOI: 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
• [Presentation] Charm quark physics from lattice QCD (2012)
  • Author(s): Y. Namekawa
  • Organizer: KEK flavor factory workshop
  • Place of Presentation: KEK, Japan, Mar
  • Year and Date: 20120308-10
• [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
  • Year and Date: 20120220-21
• [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
  • Year and Date: 20111203-05
• [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
  • Year and Date: 20111019-21
• [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
  • Year and Date: 20110916-19
• [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
  • Year and Date: 20110711-16
• [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
  • Year and Date: 20110623-24
• [Presentation] Charm quark physics from lattice QCD (2011)
  • Author(s): Y. Namekawa
  • Organizer: Hadron structure and interactions
  • Place of Presentation: RCNP, Japan
  • Year and Date: 20110025-26
• [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 (2010)
  • Author(s): Y. Namekawa
  • Organizer: International conference Lattice QCD confronts experiments
  • Place of Presentation: Mishima, Japan
  • Year and Date: 20101104-06