Strangeness S=-2 baryon-baryon interactions using chiral effective field theory

H. Polinder; J. Haidenbauer; U.-G. Mei{\ss}ner

Strangeness S=-2 baryon-baryon interactions using chiral effective field theory

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arxiv 0705.3753 v1 pith:AY3VVJHX submitted 2007-05-25 nucl-th

H. Polinder , J. Haidenbauer , U.-G. Mei{ss}ner This is my paper · ORCID

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keywords chiraleffectivefieldtheorybaryon-baryoncontactinteractionsstrangeness

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We derive the leading order strangeness S=-2 baryon-baryon interactions in chiral effective field theory. The potential consists of contact terms without derivatives and of one-pseudoscalar-meson exchanges. The contact terms and the couplings of the pseudoscalar mesons to the baryons are related via SU(3) flavor symmetry to the S=-1 hyperon-nucleon channels. We show that the chiral effective field theory predictions with natural values for the low-energy constants agree with the experimental information in the S=-2 sector.

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Perspectives for hyperon and hypernuclei physics
nucl-th 2025-06 unverdicted novelty 2.0 of 10

Hypernuclei are reviewed as key probes of the strong interaction, with upcoming experiments and higher-order theory expected to resolve the hypertriton binding energy and charge symmetry puzzles.

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