出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：We present results for meson masses and decay constants measured on 243 ×64 lattices using
the domain wall fermion formulation with an extension of the fifth dimension of Ls = 16 for
Nf = 2+1 dynamical quark flavors. The lightest dynamical meson mass in our set-up is around
331MeV, while partially quenched mesons reach masses as low as 250MeV. The applicability
of SU(3)×SU(3) and SU(2)×SU(2) (partially quenched) chiral perturbation theory will be
compared and we quote values for the low-energy constants from both approaches. We will extract
the average light quark and strange quark masses and use a non-perturbative renormalization
technique (RI/MOM) to quote their physical values. The pion and kaon decay constants are determined
at those values from our chiral fits and their ratio is used to obtain the CKM-matrix element
|Vus|. The results presented here include statistical errors only.
