The axial charge of the nucleon on the lattice and in chiral perturbation theory

Khan, A. Ali; Göckeler, M.; Hägler, P.; Hemmert, T. R.; Horsley, R.; Irving, A. C.; Pleiter, D.; Rakow, P. E. L.; Schäfer, A.; Schierholz, G.; Stüben, H.; Wollenweber, T.; Zanotti, J. M.

The axial charge of the nucleon on the lattice and in chiral perturbation theory

Authors

Description

We present recent Monte Carlo data for the axial charge of the nucleon obtained by the QCDSF-UKQCD collaboration for N_f=2 dynamical quarks. We compare them with formulae from chiral perturbation theory in finite and infinite volume and find a remarkably consistent picture.
6 pages, 3 figures, talk presented at Lattice2005 (weak matrix elements), needs PoS.cls