Weak Decay of $\Lambda$ in Nuclei : Quarks vs Mesons

Abstract

Decays of $\Lambda$ in nuclei, nonmesonic mode, are studied by using the $\Lambda N\to NN$ weak transition potential derived from the meson exchange mechanism and the direct quark mechanism. The decay rates are calculated both for the $\Lambda$ in symmetric nuclear matter and light hypernuclei. We consider the exchange of six mesons ($\pi ,K,\eta ,\rho ,\omega ,K^{\ast }$). The form factor in the meson exchange mechanism and short range correlation are carefully studied.

arXiv comment22 pages, 14 figures

References in corpus (6)

• Construction of high-quality Nucleon-Nucleon potential models
• The Weak Decay of Hypernuclei
• Theory of Weak Hypernuclear Decay
• Non-mesonic Weak Decays of Light Hypernuclei in the Direct Quark and the One-Pion Exchange Mechanisms
• Direct quark transition potential for $\Lambda N\to NN$ decay
• The Pion-Nucleon Form Factor From QCD Sum Rules

Cited by in corpus (33)

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