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Paper detail

Constraints on the Lambda-neutron interaction from charge-symmetry breaking of A=4 hypernuclei

We include the leading charge symmetry breaking contributions into the hyperon-nucleon interactions derived within chiral effective field theory up to next-to-leading order. Two low energy constants are determined using the experimentally known differences of Lambda separation energies of 4-Lambda-He and 4-Lambda-H. This allows one to predict the Lambda-neutron scattering lengths for the first time based on data. Various sources of uncertainty are discussed.

preprint2022arXivOpen access
Andreas NoggaJohann HaidenbauerUlf-G. Meißner
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Andreas NoggaJohann HaidenbauerUlf-G. Meißner

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