This title appears in the Scientific Report :
2020
Please use the identifier:
http://dx.doi.org/10.1140/epja/s10050-020-00100-4 in citations.
Please use the identifier: http://hdl.handle.net/2128/24685 in citations.
Hyperon–nucleon interaction within chiral effective field theory revisited
Hyperon–nucleon interaction within chiral effective field theory revisited
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 an...
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Personal Name(s): | Haidenbauer, J. (Corresponding author) |
---|---|
Meißner, U.-G. / Nogga, Andreas | |
Contributing Institute: |
Theorie der Starken Wechselwirkung; IAS-4 JARA - HPC; JARA-HPC Theorie der starken Wechselwirkung; IKP-3 |
Published in: | The European physical journal / A Hadrons and nuclei A, 56 (2020) 3, S. 91 |
Imprint: |
Heidelberg
Springer
2020
|
DOI: |
10.1140/epja/s10050-020-00100-4 |
Document Type: |
Journal Article |
Research Program: |
Chiral dynamics in Few-Baryon Systems TRR 110: Symmetrien und Strukturbildung in der Quantenchromodynamik Computational Science and Mathematical Methods |
Link: |
OpenAccess OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/24685 in citations.
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. |