In:
Chinese Physics Letters, IOP Publishing, Vol. 38, No. 6 ( 2021-06-01), p. 062101-
Kurzfassung:
Recently, a relativistic chiral nucleon–nucleon interaction was formulated up to leading order, which provides a good description of the phase shifts of J ≤ 1 partial waves [Chin. Phys. C 42 (2018) 014103]. Nevertheless, a separable regulator function that is not manifestly covariant was used in solving the relativistic scattering equation. In the present work, we first explore a covariant and separable form factor to regularize the kernel potential and then apply it to study the simplest but most challenging 1 S 0 channel which features several low-energy scales. In addition to being self-consistent, we show that the resulting relativistic potential can describe quite well the unique features of the 1 S 0 channel at leading order, in particular the pole position of the virtual bound state and the zero amplitude at the scattering momentum ∼ 340 MeV, indicating that the relativistic formulation may be more natural from the viewpoint of effective field theories.
Materialart:
Online-Ressource
ISSN:
0256-307X
,
1741-3540
DOI:
10.1088/0256-307X/38/6/062101
Sprache:
Unbekannt
Verlag:
IOP Publishing
Publikationsdatum:
2021
ZDB Id:
2040565-0
SSG:
6,25
