2001/10/22 by L. Giusti, C. Hoelbling, C. Rebbi
Physics and Astronomy · #Cutoff #Exponential decay #Fermion #High-Energy Particle Collisions Research #Lattice (music) #Lattice QCD #Particle physics theoretical and experimental studies #Pseudoscalar #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quark #Quenched approximation #Renormalization #hep-lat
paper · pdf · doi:10.1016/s0920-5632(01)01832-1
published as Nucl.Phys.Proc.Suppl. 106 (2002) 739-747 · LATTICE2001(Chiral Fermions and Gauge Theories), 9 pages, 5 figure, CPT 2001/P.4250
arxiv created 2001/10/22 · openalex publication_date 2002/03/01 · arxiv updated 2015/06/25 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We present results of a quenched QCD simulation with overlap fermions on a lattice of volume V = 163X32 at beta=6.0, which corresponds approximatively to a lattice cutoff of 2 GeV and an extension of 1.4 fm. From the two-point correlation functions of bilinear operators we extract the pseudoscalar meson masses and the corresponding decay constants. From the GMOR relation we determine the chiral condensate and, by using the K-meson mass as experimental input, we compute the sum of the strange and average up-down quark masses (ms + m). The needed logarithmic divergent renormalization constant ZS is computed with the RI/MOM non-perturbative renormalization technique. Since the overlap preserves chiral symmetry at finite cutoff and volume, no divergent quark mass and chiral condensate additive renormalizations are required and the results are O(a) improved.