Home > Publications database > Constraints on the $\varLambda $-neutron Interaction from Charge Symmetry Breaking in the $\mathbf {^4_\Lambda \mathrm{He}}$ - $\mathbf {^4_\Lambda \mathrm{H}}$ Hypernuclei > print

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024 7 _ |a 10.1007/s00601-021-01684-3
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100 1 _ |a Haidenbauer, Johann
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245 _ _ |a Constraints on the $\varLambda $-neutron Interaction from Charge Symmetry Breaking in the $\mathbf {^4_\Lambda \mathrm{He}}$ - $\mathbf {^4_\Lambda \mathrm{H}}$ Hypernuclei
260 _ _ |a Wien [u.a.]
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520 _ _ |a 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.
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700 1 _ |a Meißner, Ulf-G.
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700 1 _ |a Nogga, Andreas
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773 _ _ |a 10.1007/s00601-021-01684-3
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856 4 _ |u https://juser.fz-juelich.de/record/902548/files/Haidenbauer2021_Article_ConstraintsOnTheVarLambda%CE%9B-Neu.pdf
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