We present the results of a computation of the topological susceptibility in the SU(3) Yang--Mills theory performed by employing the expression of the topological charge density operator suggested by Neuberger's fermions. In the continuum limit we find r_0^4 chi = 0.059(3), which corresponds to chi=(191 \pm 5 MeV)^4 if F_K is used to set the scale. Our result supports the Witten--Veneziano explanation for the large mass of the eta'.
|Number of pages||3|
|Journal||Nuclear Physics B - Proceedings Supplements|
|Publication status||Published - 16 Sep 2004|
|Event||LATTICE 2004 — Proceedings of the XXIInd International Symposium on Lattice Field Theory - Batavia, United States|
Duration: 21 Jun 2004 → …