The Hypernuclei (Lambda) He-4 and (Lambda) He-4: Challenges for modern hyperon nucleon forces

Nogga, A.; Kamada, H.; Gloeckle, Walter

doi:10.1103/PhysRevLett.88.172501

The Hypernuclei (Lambda) He-4 and (Lambda) He-4: Challenges for modern hyperon nucleon forces

Dec, 2001

4 pages

Published in:

Phys.Rev.Lett. 88 (2002) 172501

e-Print:

nucl-th/0112060 [nucl-th]

DOI:

10.1103/PhysRevLett.88.172501

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Abstract:

The hypernuclei

^4_\Lambda

He and

^4_\Lambda

H provide important information on the hyperon-nucleon interaction. We present accurate Faddeev-Yakubovsky calculations for the

\Lambda

separation energies of the

0^+

ground and the

1^+

excited states based on the Nijmegen SC YN interactions. We explicitly take the

\Sigma

admixture into account. Mass differences of the baryons and the charge-dependence of the interaction are considered. The results show that the Nijmegen models cannot predict all separation energies simultaneously hinting to failures of the current interaction models.

helium: hypernucleus
hydrogen: hypernucleus
Lambda: hypernucleus
nucleus: mirror particle
nucleon hyperon: interaction
Lambda: energy levels
hypernucleus: wave function
symmetry breaking: charge
numerical calculations: interpretation of experiments

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