Few-nucleon systems with state-of-the-art chiral nucleon-nucleon forces
Abstract
We apply improved nucleon-nucleon potentials up to fifth order in chiral effective field theory, along with a new analysis of the theoretical truncation errors, to study nucleon-deuteron (Nd) scattering and selected low-energy observables in 3H, 4He, and 6Li. Calculations beyond second order differ from experiment well outside the range of quantified uncertainties, providing truly unambiguous evidence for missing three-nucleon forces within the employed framework. The sizes of the required three-nucleon force contributions agree well with expectations based on Weinberg's power counting. We identify the energy range in elastic Nd scattering best suited to study three-nucleon force effects and estimate the achievable accuracy of theoretical predictions for various observables.
Keywords
Cite
@article{arxiv.1505.07218,
title = {Few-nucleon systems with state-of-the-art chiral nucleon-nucleon forces},
author = {S. Binder and A. Calci and E. Epelbaum and R. J. Furnstahl and J. Golak and K. Hebeler and H. Kamada and H. Krebs and J. Langhammer and S. Liebig and P. Maris and U. -G. Meißner and D. Minossi and A. Nogga and H. Potter and R. Roth and R. Skibinski and K. Topolnicki and J. P. Vary and H. Witala},
journal= {arXiv preprint arXiv:1505.07218},
year = {2016}
}
Comments
5 pages, 5 figures