出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：We present results of lattice QCD simulations with mass-degenerate up and down and mass-split strange and charm (Nf = 2+1+1) dynamical quarks using Wilson twisted mass fermions at maximal twist. The tuning of the strange and charm quark masses is performed at three values of the lattice spacing a 0:06 fm, a 0:08 fm and a 0:09 fm with lattice sizes ranging from L 1:9 fm to L 3:9 fm. We perform a preliminary study of SU(2) chiral perturbation theory by combining our lattice data from these three values of the lattice spacing.
