Journal Article

FZJ-2020-01634

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Hyperon–nucleon interaction within chiral effective field theory revisited

Haidenbauer, J. (Corresponding author)FZJ* ; Meißner, U.-G.FZJ* ; Nogga, A.FZJ*

2020
Springer Heidelberg

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Please use a persistent id in citations: http://hdl.handle.net/2128/24685  doi:10.1140/epja/s10050-020-00100-4

Abstract: 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.

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Contributing Institute(s):

1. Theorie der Starken Wechselwirkung (IAS-4)
2. Theorie der starken Wechselwirkung (IKP-3)
3. JARA - HPC (JARA-HPC)

Research Program(s):

1. 511 - Computational Science and Mathematical Methods (POF3-511) (POF3-511)
2. DFG project 196253076 - TRR 110: Symmetrien und Strukturbildung in der Quantenchromodynamik (196253076) (196253076)
3. Chiral dynamics in Few-Baryon Systems (jikp03_20090701) (jikp03_20090701)

Appears in the scientific report 2020

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Database coverage:
; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; IF < 5 ; JCR ; Nationallizenz ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Web of Science Core Collection

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