Chiral perturbation theory for partially quenched twisted mass lattice QCD

Abstract

Partially quenched Quantum Chromodynamics with Wilson fermions on a lattice is considered in the framework of chiral perturbation theory. Two degenerate quark flavours are associated with a chirally twisted mass term. The pion masses and decay constants are calculated in next-to-leading order including terms linear in the lattice spacing $a$.

Comments: 7 pages, LaTeX2e, final published version