Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
2001-03-23
Phys.Rev. D64 (2001) 074501
Physics
High Energy Physics
High Energy Physics - Lattice
26 pages, 8 figures
Scientific paper
10.1103/PhysRevD.64.074501
We investigate the Symanzik improvement of the Wilson quark action on anisotropic lattices. Taking first a general action with nearest-neighbor and clover interactions, we study the mass dependence of the ratio of the hopping parameters, the clover coefficients, and an improvement coefficient for heavy-light vector and axial vector currents. We show how tree-level improvement can be achieved. For a particular choice of the spatial Wilson coupling, the results simplify, and $O(m_0a_\tau)$ improvement is possible. (Here $m_0$ is the bare quark mass and $a_\tau$ the temporal lattice spacing.) With this choice we calculate the renormalization factors of heavy-light bilinear operators at one-loop order of perturbation theory employing the standard plaquette gauge action.
Harada Junpei
Kronfeld Andreas S.
Matsufuru Hideo
Nakajima Noriaki
Onogi Tetsuya
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