2004/11/03 by Yasumichi Aoki, Y. Aoki, Tom Blum +21
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-lat
paper · pdf · doi:10.1103/physrevd.72.114505
published as Phys.Rev.D72:114505,2005 · 99 pages, 38 figures
arxiv created 2004/11/03 · openalex publication_date 2005/12/15 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We present results from the first large-scale study of two-flavor QCD using domain wall fermions (DWF), a chirally symmetric fermion formulation which has been proven to be very effective in the quenched approximation. We work on lattices of size 163\ifmmode×\else\texttimes\fi32, with a lattice cutoff of a^\ensuremath-1\ensuremath≈1.7 GeV and dynamical (or sea) quark masses in the range mstrange/2\ensuremath\lesssimmsea\ensuremath\lesssimmstrange. After discussing the algorithmic and implementation issues involved in simulating dynamical DWF, we report on the low-lying hadron spectrum, decay constants, static quark potential, and the important kaon weak matrix element describing indirect CP violation in the standard model, BK. In the latter case we include the effect of nondegenerate quark masses (ms\ensuremath≠mu=md), finding BK^MS(2 GeV)=0.495(18).