Haidenbauer, Johann
[VerfasserIn];
Meißner, Ulf-G.
[VerfasserIn];
Nogga, Andreas
[VerfasserIn]
Constraints on the $\varLambda $-neutron Interaction from Charge Symmetry Breaking in the $\mathbf {^4_\Lambda \mathrm{He}}$ - $\mathbf {^4_\Lambda \mathrm{H}}$ Hypernuclei
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Medientyp:
E-Artikel
Titel:
Constraints on the $\varLambda $-neutron Interaction from Charge Symmetry Breaking in the $\mathbf {^4_\Lambda \mathrm{He}}$ - $\mathbf {^4_\Lambda \mathrm{H}}$ Hypernuclei
Beteiligte:
Haidenbauer, Johann
[VerfasserIn];
Meißner, Ulf-G.
[VerfasserIn];
Nogga, Andreas
[VerfasserIn]
Erschienen:
Springer, 2021
Erschienen in:Few-body systems 62(4), 105 (2021). doi:10.1007/s00601-021-01684-3
Sprache:
Englisch
DOI:
https://doi.org/10.1007/s00601-021-01684-3
ISSN:
1432-5411;
0177-7963
Entstehung:
Anmerkungen:
Diese Datenquelle enthält auch Bestandsnachweise, die nicht zu einem Volltext führen.
Beschreibung:
We utilize the experimentally known difference of the Λ separation energies of the mirror hypernuclei 4ΛHe and 4ΛH to constrain the Λ-neutron interaction. We include the leading charge-symmetry breaking (CSB) interaction into our hyperon-nucleon interaction derived within chiral effective field theory at next-to-leading order. In particular, we determine the strength of the two arising CSB contact terms by a fit to the differences of the separation energies of these hypernuclei in the 0+ and 1+ states, respectively. By construction, the resulting interaction describes all low energy hyperon-nucleon scattering data, the hypertriton and the CSB in 4ΛHe-4ΛH accurately. This allows us to provide first predictions for the Λn scattering lengths, based solely on available hypernuclear data.