Comparison studies of finite momentum correlators on anisotropic and isotropic lattices

Collins, S., Davies, C.T.H. , Hein, J., Horgan, R.R., Lepage, G.P. and Shigemitsu, J. (2001) Comparison studies of finite momentum correlators on anisotropic and isotropic lattices. Physical Review D, 6405(5), art 055002. (doi: 10.1103/PhysRevD.64.055002)

Abstract

We study hadronic two- and three-point correlators relevant for heavy to light pseudoscalar meson semileptonic decays, using Symanzik improved glue, a D234 light quark, and nonrelativistic QCD 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.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Shigemitsu, Prof Junko and Davies, Professor Christine
• Authors: Collins, S., Davies, C.T.H., Hein, J., Horgan, R.R., Lepage, G.P., and Shigemitsu, J.
• Subjects: Q Science > QC Physics
• College/School: College of Science and Engineering > School of Physics and Astronomy
• Journal Name: Physical Review D
• Publisher: American Physical Society
• ISSN: 1550-7998
• ISSN (Online): 1089-4918