Average up/down, strange and charm quark masses with Nf=2 twisted mass lattice QCD

Understand

We present a high precision lattice calculation of the average up/down, strange and charm quark masses performed with Nf=2 twisted mass Wilson fermions.

• The analysis includes data at four values of the lattice spacing and pion masses as low as ~270 MeV, allowing for accurate continuum limit and chiral extrapolation.
• The strange and charm masses are extracted by using several methods, based on different observables: the kaon and the eta_s meson for the strange quark and the D, D_s and eta_c mesons for the charm.
• The quark mass renormalization is carried out non-perturbatively using the RI-MOM method.