The WASA-FRS project at GSI and its perspective

Production yields of single-$$\Lambda $$ Λ hypernuclei from simulated peripheral annihilations of antiprotons after capture on various target nuclei are reported. The initial annihilation process and the production of excited hypernuclei are estimated within the GiBUU transport framework, while their deexcitation process is treated with the ABLA++ code. The yield of excited hypernuclei range from $$\sim $$ ∼ 0.3 % for $${}^{16}$$ 16 O to $$\sim $$ ∼ 1.2 % for $${}^{132}$$ 132 Xe per annihilation, consistent with previous measurements at LEAR, CERN. The yield of specific ground state hypernuclei after deexcitation reaches up to a few $$10^{-4}$$ 10 - 4 per annihilation. The hypernuclei are produced in strangeness exchange reactions occuring between a nucleon of the target and the kaons originating from the annihilation in $$\sim $$ ∼ 80 % of the cases, while the strangeness pair production in secondary pion-nucleon collision contributes to the remaining $$\sim $$ ∼ 20 %. The simulations indicate that antiproton annihilations at rest on different nuclei could populate a wide range of so-far unexplored hypernuclei.

show abstract

Towards hypernuclei from nuclear lattice effective field theory

Hildenbrand,

Elhatisari,

Ren

et al. 2024

Eur. Phys. J. A

View full text Add to dashboard Cite

Understanding the strong interactions within baryonic systems beyond the up and down quark sector is pivotal for a comprehensive description of nuclear forces. This study explores the interactions involving hyperons, particularly the $$\varLambda $$ Λ particle, within the framework of nuclear lattice effective field theory (NLEFT). By incorporating $$\varLambda $$ Λ hyperons into the NLEFT framework, we extend our investigation into the $$S = -1$$ S = - 1 sector, allowing us to probe the third dimension of the nuclear chart. We calculate the $$\varLambda $$ Λ separation energies ($$B_{\varLambda }$$ B Λ ) of hypernuclei up to the medium-mass region, providing valuable insights into hyperon–nucleon (YN) and hyperon–nucleon–nucleon (YNN) interactions. Our calculations employ high-fidelity chiral interactions at N$$ ^3$$ 3 LO for nucleons and extend it to $$\varLambda $$ Λ hyperons with leading-order S-wave YN interactions as well as YNN forces constrained only by the $$A=4,5$$ A = 4 , 5 systems. Our results contribute to a deeper understanding of the SU(3) symmetry breaking and establish a foundation for future improvements in hypernuclear calculations.

show abstract

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

customersupport@researchsolutions.com

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

The WASA-FRS project at GSI and its perspective

Cited by 4 publications

References 53 publications

A compact start time counter using plastic scintillators readout with MPPC arrays for the WASA-FRS HypHI experiment

A compact start time counter using plastic scintillators readout with MPPC arrays for the WASA-FRS HypHI experiment

Production of hypernuclei from antiproton capture within a relativistic transport model

Towards hypernuclei from nuclear lattice effective field theory

Contact Info

Product

Resources

About