Improving the convergence of the chiral expansion for nuclear forces II: low phases and the deuteron
| dc.creator | Epelbaum, E. | |
| dc.creator | Glöckle, W. | |
| dc.creator | Meißner, Ulf-G. | |
| dc.date | 2003-08-04 | |
| dc.date.accessioned | 2026-07-07T05:39:50Z | |
| dc.date.available | 2026-07-07T05:39:50Z | |
| dc.description | Recently we have proposed a new cut-off scheme for pion loop integrals in the two-pion exchange potential. This method allows for a consistent implementation of constraints from pion-nucleon scattering and has been successfully applied to peripheral nucleon-nucleon partial waves. We now consider low partial waves in the non-perturbative regime, where the regularized Lippmann-Schwinger equation has to be solved in order to generate the bound and scattering states. We observe an improved description of most of the phase shifts when going from next-to- to next-to-next-to-leading order in the chiral expansion. We also find a good description of the deuteron properties. In addition, the new cut-off scheme allows to avoid the presence of unphysical deeply bound states. We discuss the cut-off dependence of the four-nucleon low-energy constants and show that their numerical values can be understood in terms of resonance saturation. This connects the effective field theory approach to boson exchange phenomenology. | |
| dc.description | 12 pp, 6 figs | |
| dc.identifier | https://arxiv.org/abs/nucl-th/0308010 | |
| dc.identifier | http://arxiv.org/abs/nucl-th/0308010 | |
| dc.identifier | Eur.Phys.J. A19 (2004) 401-412 | |
| dc.identifier | doi:10.1140/epja/i2003-10129-8 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/82067 | |
| dc.subject | Nuclear Theory | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.subject | Nuclear Experiment | |
| dc.title | Improving the convergence of the chiral expansion for nuclear forces II: low phases and the deuteron | |
| dc.type | text |