Chiral dynamics in few-nucleon systems

Citation
E. Epelbaum et al., Chiral dynamics in few-nucleon systems, NUCL PHYS A, 689(1-2), 2001, pp. 111C-118C
Citations number
28
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
NUCLEAR PHYSICS A
ISSN journal
0375-9474 → ACNP
Volume
689
Issue
1-2
Year of publication
2001
Pages
111C - 118C
Database
ISI
SICI code
0375-9474(20010618)689:1-2<111C:CDIFS>2.0.ZU;2-N
Abstract
We employ the chiral nucleon-nucleon potential derived using the method of unitary transformation up to next-to-next-to-leading order (NNLO) to study hound and scattering states in the two-nucleon system. The predicted partia l wave phase shifts and mixing parameters for higher energies and higher an gular momenta beyond tile ones which are fitted are mostly well described f or energies below 300 MeV. Various deuteron properties are discussed. We al so apply the next-to-leading order (NLO) potential to 3N and 4N systems. Th e resulting 3N and 4N binding energies are in the same range that is found using standard NN potentials. Experimental low-energy 3N scattering observa bles are also very well reproduced like for standard NN forces. Surprisingl y the long standing A, puzzle is resolved at NLO. The cut-off dependence of the scattering observables is rather mild.