Weak decays of medium and heavy Lambda-hypernuclei

Abstract

We have made a new evaluation of the Lambda decay width in nuclear matter within the Propagator Method. Through the Local Density Approximation it is possible to obtain results in finite nuclei. We have also studied the dependence of the widths on the N-N and Lambda-N short range correlations. Using reasonable values for the parameters that control these correlations, as well as realistic nuclear densities and Lambda wave functions, we reproduce, for the first time, the experimental non-mesonic widths in a wide range of mass numbers (from medium to heavy hypernuclei).

22 pages, including 5 figures

References in corpus (3)

• Weak Decay of Lambda Hypernuclei
• Hyperon properties in finite nuclei using realistic $YN$ interactions
• Non-mesonic Weak Decays of Light Hypernuclei in the Direct Quark and the One-Pion Exchange Mechanisms

Cited by in corpus (21)

• Weak Decay of Lambda Hypernuclei
• Strangeness nuclear physics: a critical review on selected topics
• Final State Interactions in Hypernuclear Decay
• Hyperons: the strange ingredients of the nuclear equation of state
• Towards the solution of the Gn/Gp Puzzle in the Non-Mesonic Weak Decay of Lambda-Hypernuclei
• Mesonic and nonmesonic weak decay widths of medium-heavy lambda hypernuclei
• Nucleon-Nucleon Coincidence Spectra in the Non-Mesonic Weak Decay of Lambda-Hypernuclei and the n/p Puzzle
• Proton spectra from Non-Mesonic Weak Decay of p-shell Lambda-Hypernuclei and evidence for the two-nucleon induced process
• Exchange terms in the two--nucleon induced non--mesonic weak decay of $\Lambda$--hypernuclei
• $\Lambda N\to NN$ weak interaction in effective field theory
• On the role of ground state correlations in hypernuclear non-mesonic weak decay
• Two-pion-exchange in the non-mesonic weak decay of $\Lambda$-hypernuclei
• Kinematical and nonlocality effects on the nonmesonic weak hypernuclear decay
• Nonmesonic Weak Decay of $\Lambda$ Hypernuclei within a Nuclear Matter Formalism
• $\sigma$ meson exchange effect on nonmesonic hypernuclear weak decay observables
• Quantum interference terms in nonmesonic weak decay of $\Lambda$-hypernuclei within a RPA formalism
• An EFT for the weak $\Lambda N$ interaction
• Nonmesonic weak decay of $\Lambda$ hypernuclei within a nuclear matter framework
• Pionic decay of Lambda Hypernuclei in a Continuum Shell Model
• Non-Mesonic Weak Decay of Lambda-hypernuclei: a new determination of the Gn/Gp ratio
• Models of the Nonmesonic Weak Decay