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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