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arXiv · 1011.1092

Nucleon and $N^* (1535)$ Distribution Amplitudes

V. M. Braun·S. Collins·M. Göckeler·C. Hagen·R. Horsley·Y. Nakamura·D. Pleiter·P. E. L. Rakow·A. Schäfer·R. W. Schiel·G. Schierholz·H. Stüben·J. M. Zanotti
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Abstract

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 $\mathcal{O}(a)$-improved Wilson fermions. New data at pion masses of approximately 270 MeV helps in significantly reducing errors in the extrapolation to the physical point.

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V. M. Braun, S. Collins, M. Göckeler, C. Hagen, R. Horsley, Y. Nakamura, D. Pleiter, P. E. L. Rakow, A. Schäfer, R. W. Schiel, G. Schierholz, H. Stüben, J. M. Zanotti. 2010-11-04. Nucleon and $N^* (1535)$ Distribution Amplitudes. https://arxiv.org/abs/1011.1092

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