TY  - JOUR
AU  - Haidenbauer, Johann
AU  - Meißner, Ulf-G.
AU  - Nogga, Andreas
TI  - Constraints on the $\varLambda $-neutron Interaction from Charge Symmetry Breaking in the $\mathbf {^4_\Lambda \mathrm{He}}$ - $\mathbf {^4_\Lambda \mathrm{H}}$ Hypernuclei
JO  - Few-body systems
VL  - 62
IS  - 4
SN  - 0177-7963
CY  - Wien [u.a.]
PB  - Springer
M1  - FZJ-2021-04349
SP  - 105
PY  - 2021
AB  - 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.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000707365200006
DO  - DOI:10.1007/s00601-021-01684-3
UR  - https://juser.fz-juelich.de/record/902548
ER  -