The QCDSF collaboration has investigated the distribution amplitudes and wavefunction normalization constants of the nucleon and its parity partner, the N∗(1535). We report on recent progress in the calculation of these quantities on configurations with two dynamical flavors of O(a)-improved Wilson fermions. New data at pion masses of approximately 270 MeV helps in significantly reducing errors in the extrapolation to the physical point.
Cite
@article{arxiv.1011.1092,
title = {Nucleon and $N^* (1535)$ Distribution Amplitudes},
author = {V. M. Braun and S. Collins and M. Göckeler and C. Hagen and R. Horsley and Y. Nakamura and D. Pleiter and P. E. L. Rakow and A. Schäfer and R. W. Schiel and G. Schierholz and H. Stüben and J. M. Zanotti},
journal= {arXiv preprint arXiv:1011.1092},
year = {2010}
}
Comments
6 pages, 4 figures, talk given at the XXVIII International Symposium on Lattice Field Theory (Lattice 2010), June 14-19 2010, Villasimius, Italy