Please use this identifier to cite or link to this item: https://hdl.handle.net/10316/4496
Title: Implications of a new effective chiral meson Lagrangian
Authors: Osipov, Alexander A. 
Sampaio, Marcos 
Hiller, Brigitte 
Keywords: Chiral meson Lagrangian; Correct vacuum and proper-time expansion
Issue Date: 2002
Citation: Nuclear Physics A. 703:1-2 (2002) 378-392
Abstract: Based on a recently derived effective chiral meson Lagrangian from the extended SU(2)[circle times operator]SU(2) Nambu-Jona-Lasinio (ENJL) model, in the linear realization of chiral symmetry, we extract to leading order in the 1/Nc expansion all associated relevant three-point functions [rho]-->[pi][pi], [sigma]-->[pi][pi], a1-->[rho][pi], a1-->[sigma][pi], as well as the amplitude for [pi][pi] scattering. We discuss the formal differences of these amplitudes as compared with those derived in the literature and calculate the associated decay widths and scattering parameters. The differences have two origins:
URI: https://hdl.handle.net/10316/4496
DOI: 10.1016/S0375-9474(01)01462-2
Rights: openAccess
Appears in Collections:FCTUC Física - Artigos em Revistas Internacionais

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