TY - JOUR
T1 - Continuum limit of lattice QCD with staggered quarks in the quenched approximation
T2 - A critical role for the chiral extrapolation
AU - Bernard, Claude
AU - Blum, Tom
AU - DeTar, Carleton
AU - Gottlieb, Steven
AU - Heller, Urs M.
AU - Hetrick, James E.
AU - McNeile, Craig
AU - Rummukainen, K.
AU - Sugar, R.
AU - Toussaint, D.
PY - 1998
Y1 - 1998
N2 - We calculate the light quark spectrum of lattice QCD in the quenched approximation using staggered quarks. We take the light quark mass, infinite volume, continuum limit. With nonlinear chiral extrapolations, we find that the nucleon to ρ mass ratio is mN/mρ = 1.254 ± 0.018 ± 0.028, where the errors are statistical and systematic (within the quenched approximation), respectively. Since the experimental value is 1.22, our results indicate that the error due to quenching is ≲5%.
AB - We calculate the light quark spectrum of lattice QCD in the quenched approximation using staggered quarks. We take the light quark mass, infinite volume, continuum limit. With nonlinear chiral extrapolations, we find that the nucleon to ρ mass ratio is mN/mρ = 1.254 ± 0.018 ± 0.028, where the errors are statistical and systematic (within the quenched approximation), respectively. Since the experimental value is 1.22, our results indicate that the error due to quenching is ≲5%.
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U2 - 10.1103/PhysRevLett.81.3087
DO - 10.1103/PhysRevLett.81.3087
M3 - Article
AN - SCOPUS:0001105389
SN - 0031-9007
VL - 81
SP - 3087
EP - 3090
JO - Physical review letters
JF - Physical review letters
IS - 15
ER -