O(a) improvement of nucleon matrix elements

被引：3

作者：

Capitani, S ^{[1
]}

Gockeler, M

Horsley, R

Oelrich, H

Perlt, H

Pleiter, D

Rakow, PEL

Schierholz, G

Schiller, A

Stephenson, P

机构：

[1] DESY, D-22603 Hamburg, Germany

[2] Univ Regensburg, Inst Theoret Phys, D-93040 Regensburg, Germany

[3] Humboldt Univ, Inst Phys, D-10115 Berlin, Germany

[4] DESY, IFH Zeuthen, D-15735 Zeuthen, Germany

[5] Univ Leipzig, Inst Theoret Phys, D-04109 Leipzig, Germany

[6] Free Univ Berlin, Inst Theoret Phys, D-14195 Berlin, Germany

来源：

NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS | 1998年 / 63卷

关键词：

D O I：

10.1016/S0920-5632(97)00730-5

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We report on preliminary results of a high statistics quenched lattice QCD calculation of nucleon matrix elements within the Symanzik improvement programme. Using the recently determined renormalisation constants from the Alpha Collaboration we present a fully non-pertubative calculation of the forward nucleon axial matrix element with O(a) lattice artifacts completely removed. Runs are made at beta = 6.0 and beta = 6.2, in an attempt to check scaling and O(a(2)) effects. We shall also briefly describe results for [x], the matrix element of a higher derivative operator.

引用

页码：233 / 235

页数：3

共 11 条

[1]

AOKI S, 1997, NUCL PHYS B-PROC SUP, V53, P2109

[2]

CAPITANI S, 1998, NUCL PHYS B-PROC SUP, V63

[3] Polarized and unpolarized nucleon structure functions from lattice QCD [J].