Comparison Studies of Finite Momentum Correlators on Anisotropic and Isotropic Lattices

Abstract

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.

43 pages with 50 postscript figures

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Cited by in corpus (7)

• Heavy-light mesons with staggered light quarks
• O(a)-improved quark action on anisotropic lattices and perturbative renormalization of heavy-light currents
• Relativistic Bottomonium Spectrum from Anisotropic Lattices
• One loop calculation of the renormalised anisotropy for improved anisotropic gluon actions on a lattice
• Gauge Theories on a 2+2 Anisotropic Lattice
• Anisotropic lattice actions for heavy quark
• Semileptonic B Decays from an NRQCD/D234 Action