Final State Interactions in Hypernuclear Decay

Abstract

We present an update of the One-Meson-Exchange (OME) results for the weak decay of s- and p-shell hypernuclei (Ref. Phys. Rev. C {\bf 56}, 339 (1997)), paying special attention to the role played by final state interactions between the emitted nucleons. The present study also corrects for a mistake in the inclusion of the $K$ and $K^{\ast }$ exchange mechanisms, which substantially increases the ratio of neutron-induced to proton-induced transitions, ${\Gamma }_n/{\Gamma }_p$. With the most up-to-date model ingredients, we find that the OME approach is able to describe very satisfactorily most of the measured observables, including the ratio ${\Gamma }_n/{\Gamma }_p$.

20 pages, 2 eps figures

References in corpus (1)

• Meson exchange in the weak decay of Lambda hypernuclei and the Gamma_n/Gamma_p ratio

Cited by in corpus (40)

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• Exclusive Measurement of the Nonmesonic Weak Decay of ^{5}_ΛHe Hypernucleus
• Nucleon-Nucleon Coincidence Spectra in the Non-Mesonic Weak Decay of Lambda-Hypernuclei and the n/p Puzzle
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• On the role of ground state correlations in hypernuclear non-mesonic weak decay
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• Single and double coincidence nucleon spectra in the weak decay of Lambda hypernuclei
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• Nonmesonic Weak Decay of $\Lambda$ Hypernuclei within a Nuclear Matter Formalism
• Proton asymmetry in non-mesonic weak decay of light hypernuclei
• $\sigma$ meson exchange effect on nonmesonic hypernuclear weak decay observables
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• Ground state normalization in the nonmesonic weak decay of ${}_{\Lambda }^{12}C$ hypernucleus within a nuclear matter formalism
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• Nonmesonic weak decay spectra of ${}_{\Lambda }^4$He
• Relationships between nonmesonic-weak-decays in different hypernuclei
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• Non-Mesonic Weak Decay of Lambda-hypernuclei: a new determination of the Gn/Gp ratio
• Hypernuclear constraints on the existence and lifetime of a deeply bound $H$ dibaryon
• Nonmesonic Hyperon Weak Decay Spectra in ${}_{\Lambda }^{12}$C}
• The Delta N -> NN transition in finite nuclei
• Models of the Nonmesonic Weak Decay
• Nonmesonic Weak Decay Dynamics from proton spectra of $\Lambda$-Hypernuclei
• Final state interaction in the pn and nn decay channels of ${}_{\Lambda }^4$He