arXiv:1303.7263·v1·Nuclear Theory
Pion-mass dispersion relation in the baryon sector
Vladimir Pascalutsa🇩🇪 · Marc Vanderhaeghen (KPH, Mainz U.)🇩🇪 · Jonathan M. M. Hall (CSSM, Adelaide U.)🇦🇺 · Tim Ledwig (IFIC, Valencia U.)🇪🇸
Abstract
By looking at the complex plane of the pion-mass squared we establish a dispersion relation which the static quantities, such as baryon masses, magnetic moments, polarizabilities, should obey. This dispersion relation yields insight into the differences between the heavy-baryon and relativistic calculations in the baryon sector of chiral perturbation theory.
Comments: 6 pages, 3 figs, contribution to 7th International Workshop on Chiral Dynamics (CD12)