`` $\Lambda -\Sigma$ conversion in ${}_{\Lambda }^4$He and ${}_{\Lambda }^4$H based on four-body calculation

Abstract

Precise four-body calculations for ${}_{\Lambda }^4$He and ${}_{\Lambda }^4$H have been performed in the framework of the variational method with Jacobian-coordinate Gaussian-basis functions. All the rearrangement channels of both $NNN\Lambda$ and $NNN\Sigma$ are explicitly taken into account for the first time with the use of realistic $NN$ and $YN$ interactions. The role of $\Lambda$-$\Sigma$ conversion and the amount of the virtual $\Sigma$-component in ${}_{\Lambda }^4$He and ${}_{\Lambda }^4$H are discussed.

14 pages, 8figures, submitted to Physical Review C

Cited by in corpus (35)

• Strangeness in nuclear physics
• Extended-soft-core Baryon-Baryon Model II. Hyperon-Nucleon Interaction
• The Hypernuclei ${}_{\Lambda }^4$He and ${}_{\Lambda }^4$H: Challenges for Modern Hyperon-Nucleon Forces
• Ab initio approach to s-shell hypernuclei 3H_Lambda, 4H_Lambda, 4He_Lambda and 5He_Lambda with a Lambda N-Sigma N interaction
• Hyperon-nucleon interaction within chiral effective field theory revisited
• Observation of Lambda H-4 hyperhydrogen by decay-pion spectroscopy in electron scattering
• Observation of Spin-Dependent Charge Symmetry Breaking in $\Lambda N$ Interaction: Gamma-Ray Spectroscopy of ${}_{\Lambda }^4$He
• Weak Decay of Lambda Hypernuclei
• Strangeness nuclear physics: a critical review on selected topics
• Lambda-nuclear interactions and hyperon puzzle in neutron stars
• Three-body structure of the $nn\Lambda$ system with $\Lambda N-\Sigma N$ coupling
• Charge symmetry breaking in $\Lambda$ hypernuclei revisited
• Faddeev-Yakubovsky search for Lambda-Lambda hydrogen-4
• Ab-initio calculations of charge symmetry breaking in the A=4 hypernuclei
• Light $\Xi$ hypernuclei in four-body cluster models
• Gamma-Ray Spectroscopy of ${}_{\Lambda }^{16}$O and ${}_{\Lambda }^{15}$N Hypernuclei via the ${}^{16}$O$(K^{-},{\pi }^{-})$ reaction
• Induced Hyperon-Nucleon-Nucleon Interactions and the Hyperon Puzzle
• Hypernuclear structure from gamma-ray spectroscopy
• Stochastic Variational Search for ${}_{\Lambda \Lambda }^4$H
• Charge symmetry breaking in the A=4 hypernuclei
• Four-body structure of neutron-rich hypernucleus ${}_{\Lambda }^6$H
• Sigma Exchange in the Nonmesonic Decays of Light Hypernuclei and Violation of the Delta I=1/2 Rule
• Hyperonic mixing in five-baryon double-strangeness hypernuclei in a two-channel treatment
• Behaviour of the $\Lambda N$ and $\Lambda NN$ potential strengths in the ${}_{\Lambda }^5$He hypernucleus
• No-Core Shell Model for Nuclear Systems with Strangeness
• A relativistic mean field study of multi-strange system
• Tetramer Bound States in Heteronuclear Systems
• Structure of neutron-rich He $\Lambda$ hypernuclei using the cluster orbital shell model
• Benchmark Results for Few-Body Hypernuclei
• Resonant State in Helium-4 Lambda
• Structure of p-shell hypernuclei
• Production of a 4He_Lambda hypernucleus in the 4He(pi, K) reactions reexamined
• Charge symmetry breaking in hypernuclei within RMF model
• Nonmesonic Weak Decay of $\Lambda$ Hypernuclei: The Three--Nucleon Induced Mode
• Efimov universality with Coulomb interaction