Anisotropic lattices for precision computations in heavy flavor physics

Abstract

We study the anisotropic lattice QCD for precision computations of heavy-light matrix elements. Our previous study in which the lattices are calibrated with a few percent accuracy has already given results comparable to the existing calculations. This suggests that even higher precision may be achieved by a more precise calibration of anisotropic lattices. We describe our strategy to tune the gauge and quark parameters with accuracies much less than 1 % in the quenched approximation.

Anisotropic lattice with nonperturbative accuracy

“…Feasibility studies performed so far for the level of O(10%) computations are encouraging for further development * Poster presented by H. Matsufuru [3,4]. We therefore investigate calibration procedures at the accuracy less than one percent, both for the gauge and quark actions in the quenched approximation at ξ = 4 [5].…”

“…Among these applications, computations of heavy-light matrix elements [1,2,3,4] require the most accurate parameter tuning, which should be performed nonperturbatively. In this paper, we report the status of our project to develop the anisotropic lattice framework for such precision computations with accuracy of a few percent level [5].…”