TY  - JOUR
AU  - Haidenbauer, J.
AU  - Meißner, U.-G.
AU  - Nogga, Andreas
TI  - Hyperon–nucleon interaction within chiral effective field theory revisited
JO  - The European physical journal / A Hadrons and nuclei A
VL  - 56
IS  - 3
SN  - 1434-601X
CY  - Heidelberg
PB  - Springer
M1  - FZJ-2020-01634
SP  - 91
PY  - 2020
AB  - The ΛN and ΣN interactions are considered at next-to-leading order in SU(3) chiral effective field theory. Different options for the low-energy constants that determine the strength of the contact interactions are explored. Two variants are analysed in detail which yield equivalent results for ΛN and ΣN scattering observables but differ in the strength of the ΛN→ΣN transition potential. The influence of this difference on predictions for light hypernuclei and on the properties of the Λ and Σ hyperons in nuclear matter is investigated and discussed. The effect of the variation in the potential strength of the ΛN-ΣN coupling (also called Λ−Σ conversion) is found to be moderate for the considered 3ΛH and 4ΛHe hypernuclei but sizable in case of the matter properties. Further, the size of three-body forces and their relation to different approaches to hypernuclear interactions is discussed.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000522136600002
DO  - DOI:10.1140/epja/s10050-020-00100-4
UR  - https://juser.fz-juelich.de/record/874722
ER  -