The Delta I=1/2 rule in non-mesonic weak decay of Lambda-hypernuclei

Abstract

By employing recent data on non-mesonic decay of s-shell Lambda-hypernuclei we study, within the phenomenological model of Block and Dalitz, the validity of the Delta I=1/2 rule in the Lambda N--> NN process. Due to the low experimental precision, a possible violation of this rule can be neither proved nor excluded at present with sufficient accuracy: a pure Delta I=1/2 transition amplitude is excluded at 40% confidence level.

References in corpus (4)

• The Weak Decay of Hypernuclei
• Weak Decay of Lambda Hypernuclei
• Non-mesonic Weak Decays of Light Hypernuclei in the Direct Quark and the One-Pion Exchange Mechanisms
• Functional approach to the non-mesonic decay of Lambda-hypernuclei

Cited by in corpus (11)

• Weak Decay of Lambda Hypernuclei
• Strangeness nuclear physics: a critical review on selected topics
• Towards the solution of the Gn/Gp Puzzle in the Non-Mesonic Weak Decay of Lambda-Hypernuclei
• Nucleon-Nucleon Coincidence Spectra in the Non-Mesonic Weak Decay of Lambda-Hypernuclei and the n/p Puzzle
• Sigma Exchange in the Nonmesonic Decays of Light Hypernuclei and Violation of the Delta I=1/2 Rule
• Two-pion-exchange in the non-mesonic weak decay of $\Lambda$-hypernuclei
• Nonmesonic Weak Decay of $\Lambda$ Hypernuclei within a Nuclear Matter Formalism
• $\sigma$ meson exchange effect on nonmesonic hypernuclear weak decay observables
• Relationships between nonmesonic-weak-decays in different hypernuclei
• Non-Mesonic Weak Decay of Lambda-hypernuclei: a new determination of the Gn/Gp ratio
• Nonmesonic Weak Decay of $\Lambda$ Hypernuclei: The Three--Nucleon Induced Mode