Simulating at Realistic Quark Masses: Pseudoscalar Decay Constants and Chiral Logarithms

Details Simulating at Realistic Quark Masses: Pseudoscalar Decay Constants and Chiral Logarithms Simulating at Realistic Quark Masses: Pseudoscalar Decay Constants and Chiral Logarithms

2006-10-10

arxiv.org/abs/hep-lat/0610066v1

PoSLAT2006:179,2006

Physics

High Energy Physics

High Energy Physics - Lattice

7 pages, contribution to Lattice 2006

Scientific paper

Due to improvements in computer performance and algorithms, the rapidly increasing cost for unquenched Wilson-type fermions with lighter quarks has been ameliorated and new simulations are now possible. Here we present results using two flavours of O(a)-improved Wilson fermions for meson decay constants at pseudoscalar masses down to 320MeV. Results are at several lattice spacings down to about 0.07fm and include a non-perturbative determination of the renormalisation constant. This enables us to attempt contact with (partially quenched) chiral perturbation theory.

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