Extensions of nuclear physics to the strange sector are reviewed, covering data and models of Λ and other hypernuclei, multistrange matter, and antikaon bound states and condensation. Past achievements are highlighted, present unresolved problems are discussed, and future directions are outlined.

Strangeness in nuclear physics

50 years of hypernuclear physics: I. The early experiments

https://digital.csic.es/bitstream/10261/237725/1/Strangeness_in_Nuclei_and_Neutron_Stars.pdf

Strangeness in Nuclei and Neutron Stars

Selected topics in strangeness nuclear physics are critically reviewed. This includes production, structure and weak decay of Λ-Hypernuclei, the $$\bar K$$
 nuclear interaction and the possible existence of $$\bar K$$
 bound states in nuclei. Perspectives for future studies on these issues are also outlined.

Strangeness nuclear physics: a critical review on selected topics

Selected topics in strangeness nuclear physics are critically reviewed. This includes production, structure and weak decay of $\Lambda$--Hypernuclei, the $\bar K$ nuclear interaction and the possible existence of $\bar K$ bound states in nuclei. Perspectives for future studies on these issues are also outlined.

The short-range hyperfragments from 800 Mev/c K/sup -/ interactions have been shown to possess mass values in the range A = 60 to 100, and an upper limit of 35 Mev has been placed on the value of their B/sub LAMBDA /. Details are tabulated for five pi -mesic decays attributed to hyperfragments of the same order of mass resulting from 0.8 and 1.5 Bev/c k/sup -/ interactions in emulsion. From these events, a more precise estimate of the upper limit of B/sub LAMBDA / is set at 25 Mev. (H.D.R.)

Binding Energy of Λ 0 Hyperons in Heavy Hypernuclei ( 60 A 100 )

Further results are presented on the binding energies of hypernuclei of mass numberA>5. The data from 56 \gp{su\t-} of such hypernuclei are combined with the previously existing data. Problems in the identification of the heavier hypernuclei are critically discussed. The possible existence of an isomeric state of7HeΛ as suggested byPniewski andDanysz (2) is considered.

Binding energies of hypernuclei with mass number a>5,

The hyperfragment production by fast π-meson interactions is shown to be well explained by the model ofJoneset al. (1). In particular, the short-range hyperfragments are shown to be predominantly very heavy and not light as had been supposed. The conclusions ofSilverstein (3),Fryet al. (4) andLokanathanet al. (5) are critically examined with recourse to this fact.

Hyperfragment production by 4.5 GeV/c π--Meson interactions in emulsion nuclei. A reappraisal

It has been shown that thick pellicles can be loaded with lithium acetate solutions still maintaining all the desirable geometrical and physical properties of normal emulsion. Aside from the main purpose of the method, that of introducing lithium atoms in the emulsion, the loaded pellicles offer a number of interesting properties which may be helpful in various applications. Loading with lithium acetate increases appreciably the relative content of light elements in the emulsion. Experiments in which water loading was previously required can be carried out with the advantage of a better track image, using these emulsions. The production of hyperfragments from K- capture stars will be undoubtedly enhanced, while the decreased stopping power (with respect to normal emulsions) may prove useful in lifetime studies. Additional advantages arise from the fact that pellicles originally {dy1200} Μm thick are swollen at exposure to ~2100 Μm. This may serve to increase the density of tracks by almost a factor of 2, of some value in the presence of beams of low intensity. The effort in tracing long tracks through the stack is reduced and the efficiency in detecting connected events in a single pellicle is correspondingly increased.

https://link.springer.com/content/pdf/10.1007/BF02782170.pdf

Loading of emulsions stacks with aqueous solutions of lithium acetate

A determination of the spin of ΛLi8

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