Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
2001-12-19
Phys.Rev. D65 (2002) 094510
Physics
High Energy Physics
High Energy Physics - Lattice
14 pages, 3 figures, Talk given at Lattice2001, Berlin, Germany
Scientific paper
10.1103/PhysRevD.65.094510
Using an approach free from momentum extrapolation, we calculate the nucleon magnetic moment and the fraction of the nucleon spin carried by the quark angular momentum in the quenched lattice QCD approximation. Quarks with three values of lattice masses, 210, 124 and 80 MeV, are formulated on the lattice using the standard Wilson approach. At every mass, 100 gluon configurations on 16^3 x 32 lattice with \beta=6.0 are used for statistical averaging. The results are compared with the previous calculations with momentum extrapolation. The contribution of the disconnected diagrams is studied at the largest quark mass using noise theory technique.
Gadiyak Valeriya
Ji Xiangdong
Jung Chulwoo
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