arXiv:1112.0473·v1·High Energy Physics — Lattice
An Update on Distribution Amplitudes of the Nucleon and its Parity Partner
R. W. Schiel🇩🇪 · G. S. Bali🇩🇪 · V. M. Braun🇩🇪 · S. Collins🇩🇪 · M. Göckeler🇩🇪 · C. Hagen🇩🇪 · R. Horsley🇬🇧 · Y. Nakamura🇯🇵 · D. Pleiter🇩🇪 · P. E. L. Rakow🇬🇧 · A. Schäfer🇩🇪 · G. Schierholz🇩🇪
Abstract
The calculation of baryon wave functions at small inter-quark separations is an ongoing effort within the QCDSF collaboration. In this update on normalization constants and distribution amplitudes of the nucleon and its negative parity partner, N* (1535), we present new lattice data which helps us controlling finite size effects. We use new chiral perturbation theory results to perform the extrapolation to the physical point.
Comments: 7 pages, 4 figures, talk given at the XXIX International Symposium on Lattice Field Theory - Lattice 2011, July 10-16 2011, Squaw Valley, Lake Tahoe, California