Production of Two Single-Λ Hypernuclei by Ξ- Capture

Double-Λ Hypernuclei via the Ξ− Hyperon Capture at Rest Reaction in a Hybrid Emulsion

We have obtained nearly one thousand events of the Ξ− hyperon captured at rest in nuclear emulsion. Among them, production and decay of double-Λ hypernuclei was successfully found and analyzed for five events which correspond to five nuclear species with double strangeness. Preliminary results are discussed for the binding energy and interaction energy of two Λ hyperons. By comparison with olde...

Spectroscopy of Medium to Heavy Single Λ-Hypernuclei

We develop a method for calculating the doublet splittings of select ground-state single Λ-hypernuclei. This hypernuclear spectroscopy is conducted by supplementing the self-consistent single-particle equations with an effective interaction, which follows directly from the underlying lagrangian, to simulate the residual particlehole interaction. Our previous investigation, performed using only ...

Double Λ Hypernuclei and the Λ-λ Interaction. *

We approximate the double Λ hypernuclei by systems composed by two interacting Λ’s moving in the mean field potential created by the nuclear cores. The Λ-core potentials are adjusted to reproduce the binding energies of the corresponding single Λ hypernuclei [1]. A σ-ω meson exchange potential [2] is used for the Λ-Λ interaction. We apply both the Hartree-Fock (HF) and variational approximation...

Asymmetry studies in Λ 0 / Λ̄ 0 , Ξ − / Ξ + and Ω − / Ω + production

We present a study on hyperon/anti-hyperon production asymmetries in the framework of the recombination model. The production asymmetries for Λ/Λ̄, Ξ/Ξ and Ω/Ω are studied as a function of xF . Predictions of the model are compared to preliminary data on hyperon/anti-hyperon production asymmetries in 500 GeV/c π−p interactions from the Fermilab E791 experiment. The model predicts a growing asymm...

00 2 Λ + c - and Λ b - hypernuclei