出版社:SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要: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.