Extended-soft-core baryon-baryon model III. $S=-2$ hyperon-hyperon/nucleon interaction

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dc.creatorRijken, Th. A.
dc.creatorYamamoto, Y.
dc.date2006-08-30
dc.date.accessioned2026-07-07T07:25:38Z
dc.date.available2026-07-07T07:25:38Z
dc.descriptionThis paper presents the Extended-Soft-Core (ESC) potentials ESC04a-d for baryon-baryon channels with total strangeness $S=-2$. For these channels no experimental scattering data exist, and alsothe information from hypernuclei is very limited.The potential models for $S=-2$ are based on SU(3) extensions of potential models for the $S=0,-1$ sectors, which are fitted to experimental data. Flavor su(3)-symmetry is broken 'kinematically'by the masses of the baryons and the mesons.Moreover, in ESC04a,b aldo the coupling constants are broken, albeit in a well defined way using the $^3P_0$ quark-antiquark pair creation model as a guidance. But the fit to the S=0 and $S=-1$ sectors provides the necessary constraints to fix all free parameters.Therefore, the potentials for the $S=-2$ sectors do not contain additional free parameters, which situation is similar to the soft-core one-boson-exchange NSC97-models. Various properties of the potentials are illustrated by giving results for scattering lengths, bound states, phase-parameters, and total cross sections. The features of $Ξ$-hypernuclei predicted by ESC04d are studied on the basis of the G-matrix approach.
dc.description28 pages, 11 figures, 30 tables
dc.identifierhttps://arxiv.org/abs/nucl-th/0608074
dc.identifierhttp://arxiv.org/abs/nucl-th/0608074
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/116788
dc.subjectNuclear Theory
dc.titleExtended-soft-core baryon-baryon model III. $S=-2$ hyperon-hyperon/nucleon interaction
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