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Current constraints on effective field theory parameters for the ΛN→NN transition
Pérez-Obiol, Axel; Parreño García, Assumpta; Juliá-Díaz, Bruno
Universitat de Barcelona
The relation between the low-energy constants appearing in the effective field theory description of the ΛN→NN transition potential and the parameters of the one-meson-exchange model previously developed is obtained. We extract the relative importance of the different exchange mechanisms included in the meson picture by means of a comparison to the corresponding operational structures appearing in the effective approach. The ability of this procedure to obtain the weak baryon-baryon-meson couplings for a possible scalar exchange is also discussed.
Teoria quàntica de camps
Quantum field theory
(c) American Physical Society, 2011
American Physical Society

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Perez Obiol, Axel; Entem, D. R.; Juliá-Díaz, Bruno; Parreño García, Assumpta