2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/204480We evaluate properties of neutral mesons in Nf=2 dynamical simulations of TMQCD at maximal twist. The pion is explored - establishing the size of the isospin splitting (an order a^2 effect). We investigate the eta' (the Nf=2 flavour singlet pseudoscalar meson) and neutral rho and scalar mesons. We show that disconnected diagrams can be evaluated very efficiently in TMQCD using variance reduction methods.7 pages, presented at Lattice 2007, Regensburg, GermanyHigh Energy Physics - Latticetext