Comparison Studies of Finite Momentum Correlators on Anisotropic and Isotropic Lattices

Details Comparison Studies of Finite Momentum Correlators on Anisotropic and Isotropic Lattices Comparison Studies of Finite Momentum Correlators on Anisotropic and Isotropic Lattices

2001-01-30

arxiv.org/abs/hep-lat/0101019v1

Phys.Rev.D64:055002,2001

Physics

High Energy Physics

High Energy Physics - Lattice

43 pages with 50 postscript figures

Scientific paper

10.1103/PhysRevD.64.055002

We study hadronic two- and three-point correlators relevant for heavy to light pseudoscalar meson semi-leptonic decays, using Symanzik improved glue, D234 light quark and NRQCD heavy quark actions. Detailed comparisons are made between simulations on anisotropic and isotropic lattices involving finite momentum hadrons. We find evidence that having an anisotropy helps in extracting better signals at higher momenta. Initial results for the form factors f_+(q^2) and f_0(q^2) are presented with tree-level matching of the lattice heavy-light currents.

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