Production of multi-strangeness hypernuclei and the YN-interaction

Gaitanos, T.; Lenske, H.

doi:10.1016/j.physletb.2014.08.056

Cited by 21 publications

(30 citation statements)

References 55 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The coalescence is very popular and it exists on the market in different modifications, see, for example, its application for the hyperon capture within other transport approaches [36,52,53]. The connection of the potential and coalescence capture conceptions was demonstrated previously.…”

Section: Production Of Hyper-residuesmentioning

confidence: 99%

Formation of hypernuclei in heavy-ion collisions around the threshold energies

et al. 2017

View full text Add to dashboard Cite

In relativistic ion collisions there are excellent opportunities to produce and investigate hypernuclei. We have systematically studied the formation of hypernuclear spectator residues in peripheral heavy-ion collisions with the transport DCM and UrQMD models. The hyperon capture was calculated within the potential and coalescence approaches. We demonstrate that even at the beam energies around and lower than the threshold for producing Λ hyperons in binary nucleon-nucleon interactions a considerable amount of hypernuclei, including multi-strange ones, can be produced. This is important for preparation of new experiments on hypernuclei in the wide energy range.The uncertainties of the predictions are investigated within the models, and the comparison with the strangeness production measured in experiments is also performed. 21.80.+a , 25.70.Mn

show abstract

Section: Production Of Hyper-residuesmentioning

confidence: 99%

Formation of hypernuclei in heavy-ion collisions around the threshold energies

et al. 2017

View full text Add to dashboard Cite

show abstract

“…Besides including all necessary binary processes for (anti)baryon-(anti)baryon, meson-baryon and meson-meson scattering and annihilation [34], the most important ingredients are the new ΞN cross section parameterizations. The main results of our investigation in [28] are found in Fig.(4). The most remarkable feature is the strong dependence of the distributions of Ξ-bound hypernuclei on the underlying ΞN model, although both interactions are leading to almost identical S = −1 distributions [28].…”

Section: Strangeness Production In Heavy Ion Collisions and Antiprotomentioning

confidence: 78%

Production and Interactions of Hyperons and Hypernuclei

Lenske

Cao

Dhar

et al. 2017

Proceedings of the 12th International Conference on Hypernuclear and Strange Particle Physics (HYP2015)

View full text Add to dashboard Cite

The production of strangeness on the nucleon and hyperon and hypernuclear production in heavy ion collisions at relativistic energies and in antiproton annihilation on nuclei is discussed. The reaction process is described by transport theory with focus on S = −2 channels and a comparison of different model interactions. The interactions of hyperons in nuclear matter is investigated in a novel SU (3) approach. An outlook to the S = −3 sector and Ω − physics is given.

show abstract

“…This can be traced back to the different behaviour of the ΞN cross sections: in the Rijken model the elastic channel basically vanishes and the inelastic channel drastically drops down at higher energies. On the other hand, both channels stabilize at a finite value in the Fujiwara description [53]. As a consequence, the production of twin hypernuclei is about a factor of 5 larger when using the Fujiwara description.…”

Section: The E906 Puzzlementioning

confidence: 96%

“…Two different YN-interaction models were considered, which are based on the microscopic calculations of the Nijmegen group by Rijken and Yamamoto [54,55] and by Fujiwara et al [56] (see Ref. [53] for more details). While for the Fujiwara model the production of two free Λ particles continuously increases, the Rijken model predicts a maximum around an incident energy of 100 MeV followed by a continuous decline for rising energy.…”

Section: The E906 Puzzlementioning

confidence: 99%

Has the neutral double hypernucleus nΛΛ4 been observed?

et al. 2019

Self Cite

View full text Add to dashboard Cite

The BNL-AGS E906 experiment was the first fully electronic experiment to produce and study double hypernuclei with large statistics. Two dominant structures were observed in the correlated π − -π − momentum matrix at (p π−H ,p π−L ) = (133,114) MeV/c and at (114,104) MeV/c. In this work we argue that the interpretation of the structure at (133,114) MeV/c in terms of 3 Λ H+ 4 Λ H pairs is questionable. We show, that neither a scenario where these singe-Λ hypernuclei are produced after capture of a stopped Ξ − by a 9 Be nucleus nor interactions of energetic Ξ − with 9 Be nuclei in the target material can produce a sufficient amount of such twin pairs. We have therefore explored the conjecture of Avraham Gal that decays of the 4 ΛΛ n may be responsible for the observed structure. Indeed, the inclusion of 4 ΛΛ n with a two-body π − branching ratio of 50% in a statistical multifragmentation model allows to describe the E906 data remarkably well. On the other hand, a bound 3 Λ n nucleus would cause a striking structure in the momentum correlation matrix which is clearly inconsistent with the observation of E906.

show abstract

Production of multi-strangeness hypernuclei and the YN-interaction

Cited by 21 publications

References 55 publications

Formation of hypernuclei in heavy-ion collisions around the threshold energies

Formation of hypernuclei in heavy-ion collisions around the threshold energies

Production and Interactions of Hyperons and Hypernuclei

Has the neutral double hypernucleus nΛΛ4 been observed?

Contact Info

Product

Resources

About