TY - JOUR
T1 - First determination of the strange and light quark masses from full lattice QCD
AU - collaboration, HPQCD
AU - collaboration, MILC
AU - collaboration, UKQCD
AU - Aubin, C.
AU - Bernard, C.
AU - Davies, C.
AU - DeTar, C.
AU - Gottlieb, Steven
AU - Gray, A.
AU - Gregory, E.
AU - Hein, J.
AU - Heller, U.
AU - Hetrick, J.
AU - Lepage, G.
AU - Mason, Q.
AU - Osborn, J.
AU - Shigemitsu, J.
AU - Sugar, R.
AU - Toussaint, D.
AU - Trottier, H.
AU - Wingate, M.
N1 - 5 pages, revtex, 2 figures. v2: New ms/hat(m) discussion and reference, v3: slight change in discussion of reference
PY - 2004/5/26
Y1 - 2004/5/26
N2 - We compute the strange quark mass $m_s$ and the average of the $u$ and $d$ quark masses $\hat m$ using full lattice QCD with three dynamical quarks combined with experimental values for the pion and kaon masses. The simulations have degenerate $u$ and $d$ quarks with masses $m_u=m_d\equiv \hat m$ as low as $m_s/8$, and two different values of the lattice spacing. The bare lattice quark masses obtained are converted to the $\msbar$ scheme using perturbation theory at $O(alpha_s)$. Our results are: $m_s^\msbar$(2 GeV) = 76(0)(3)(7)(0) MeV, $\hat m^\msbar$(2 GeV) = 2.8(0)(1)(3)(0) MeV and $m_s/\hat m$ = 27.4(1)(4)(0)(1), where the errors are from statistics, simulation, perturbation theory, and electromagnetic effects, respectively.
AB - We compute the strange quark mass $m_s$ and the average of the $u$ and $d$ quark masses $\hat m$ using full lattice QCD with three dynamical quarks combined with experimental values for the pion and kaon masses. The simulations have degenerate $u$ and $d$ quarks with masses $m_u=m_d\equiv \hat m$ as low as $m_s/8$, and two different values of the lattice spacing. The bare lattice quark masses obtained are converted to the $\msbar$ scheme using perturbation theory at $O(alpha_s)$. Our results are: $m_s^\msbar$(2 GeV) = 76(0)(3)(7)(0) MeV, $\hat m^\msbar$(2 GeV) = 2.8(0)(1)(3)(0) MeV and $m_s/\hat m$ = 27.4(1)(4)(0)(1), where the errors are from statistics, simulation, perturbation theory, and electromagnetic effects, respectively.
U2 - 10.1103/PhysRevD.70.031504
DO - 10.1103/PhysRevD.70.031504
M3 - Article
SN - 1550-7998
VL - 70
JO - Physical Review D
JF - Physical Review D
IS - 3
ER -