ar X iv : n uc l - th / 9 70 90 13 v 1 8 S ep 1 99 7 S - wave Pairing of Λ Hyperons in Dense Matter

ar X iv : n uc l - ex / 9 70 80 05 v 2 9 S ep 1 99 8 Λ hyperons in 2 A GeV Ni + Cu collisions EOS Collaboration

A sample of Λ’s produced in 2 AGeV Ni + natCu collisions has been obtained with the EOS Time Projection Chamber at the Bevalac. Low background in the invariant mass distribution allows for the unambiguous demonstration of Λ directed flow. The Λ mT spectrum at mid-rapidity has the characteristic shoulder-arm shape of particles undergoing radial transverse expansion. A linear dependence of Λ mult...

ar X iv : n uc l - th / 9 80 70 34 v 1 1 0 Ju l 1 99 8 Universalities of Triplet Pairing in Neutron Matter

The fundamental structure of the full set of solutions of the BCS P2 pairing problem in neutron matter is established. The relations between different spin-angle components in these solutions are shown to be practically independent of density, temperature, and the specific form of the pairing interaction. The spectrum of pairing energies is found to be highly degenerate. Typeset using REVTEX

ar X iv : n uc l - th / 9 90 90 19 v 1 9 S ep 1 99 9 Strange nuclear matter within Brueckner - Hartree - Fock theory

We have developed a formalism for microscopic Brueckner-type calculations of dense nuclear matter that includes all types of baryon–baryon interactions and allows to treat any asymmetry on the fractions of the different and Ξ 0). We present results for the different single–particle potentials focussing on situations that can be relevant in future microscopic studies of beta-stable neutron star ...

ar X iv : n uc l - th / 9 90 60 29 v 3 1 5 Ju l 1 99 9 1 Quark Matter ’ 99 — Theoretical Summary : What Next ?

ar X iv : n uc l - th / 9 71 10 54 v 1 2 6 N ov 1 99 7 The π + – emission puzzle in 4 Λ He decay

We re-examine the puzzling π emission from the weak decay of 4ΛHe and propose an explanation in terms of a three–body decay of the virtual Σ. Such a resolution of the π decay puzzle is consistent with the calculated Σ probability in light Λ hypernuclei as well as the experimentally observed π energy spectrum and s–wave angular distribution. Typeset using REVTEX