Eta and eta' meson masses from Nf=2+1+1 twisted mass lattice QCD

Details Eta and eta' meson masses from Nf=2+1+1 twisted mass lattice QCD Eta and eta' meson masses from Nf=2+1+1 twisted mass lattice QCD

2011-11-15

arxiv.org/abs/1111.3596v1

Physics

High Energy Physics

High Energy Physics - Lattice

7 pages, 3 figures, The XXIX International Symposium on Lattice Field Theory, Lattice 2011

Scientific paper

We determine mass and flavour content of eta and eta' states using Nf=2+1+1 Wilson twisted mass lattice QCD. We describe how those flavour singlet states need to be treated in this lattice formulation. Results are presented for two values of the lattice spacing, a~0.08 fm and a~0.09 fm, with a range of light quark masses corresponding to values of the pion mass from 270 to 500 MeV and fixed bare strange and charm quark mass values.

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