Λ0-Nucleon Potential and the Binding of Hyperfragments

Phys. Rev. 107, 272 – Published 1 July 1957
Laurie M. Brown and Murray Peshkin

Abstract

The volume integral Ω of the effective interaction potential between the Λ hyperon and the nucleon has been calculated from the observed binding energies of hyperfragments of mass number 3, 4, 5, 7, and 9. An assumption of short-range, central, spin-independent forces leads to a single value of Ω=(240±20)×10-39 Mev cm3, independent of experimental uncertainties in the size and shape of nuclei and in the observed binding energies, except for the case of He5Λ. The additional freedom gained by assuming central spin-dependent forces does not permit the fitting of He5Λ and the other hypernuclei. It is concluded that the explanation of the anomalously low value of Ω for He5Λ is to be found in the nuclear properties of its alpha-particle core.

DOI: http://dx.doi.org/10.1103/PhysRev.107.272

  • Received 20 March 1957
  • Published in the issue dated July 1957

© 1957 The American Physical Society

Authors & Affiliations

Laurie M. Brown* and Murray Peshkin

  • Northwestern University, Evanston, Illinois

  • *Research supported in part by the National Science Foundation.

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