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Probing the QCD vacuum with flavour singlet objects: $η'$ on the lattice

T. Struckmann·K. Schilling·P. Ueberholz·N. Eicker·S. Guesken·Th. Lippert·H. Neff·B. Orth·J. Viehoff
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Abstract

We 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.

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T. Struckmann, K. Schilling, P. Ueberholz, N. Eicker, S. Guesken, Th. Lippert, H. Neff, B. Orth, J. Viehoff. 2000-06-08. Probing the QCD vacuum with flavour singlet objects: $η'$ on the lattice. https://arxiv.org/abs/hep-lat/0006012

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