2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/38485We present a study on the direct determination of the $η'$ mass on the full set of SESAM and T$χ$L QCD vacuum configurations with 2 active flavours of Wilson fermions, at $β= 5.6$. We observe a definite dependency of the two-loop correlator on the topological charge sector.10 pagesHigh Energy Physics - Latticetext