RT Journal Article
T1 Nonperturbative approach to effective chiral Lagrangians and meson interactions
A1 Oller, J. A.
A1 Oset, E.
A1 Peláez Sagredo, José Ramón
AB We develop a coupled channel unitary approach describing the behavior at higher energies of systems whose low-energy dynamics is given by effective O(p^2) and O(p^4) chiral Lagrangians. Our free parameters are those of the O(p^4) Lagrangian. When applied to the meson-meson interaction, it yields a remarkable agreement with data up to √2≅1.2  GeV, dynamically generating the σ , f_0 α_0, ρ, and K* resonances. Further applications are also proposed.
PB American Physical Society
SN 0031-9007
YR 1998
FD 1998-03-20
LK https://hdl.handle.net/20.500.14352/60096
UL https://hdl.handle.net/20.500.14352/60096
LA eng
NO © 1998 The American Physical Society.One of us (J. R. P.) thanks the University of Valencia, where this work was carried out, for their kind hospitality. We thank A. Pich and M. R. Pennington for useful comments. J. A. O.  acknowledges financial support from the Generalitat Valenciana. This work was partially supported by CICYT under Contracts No. PB96-0753 and No. AEN93-0776.
NO Generalitat Valenciana
NO CICYT, Spain
DS Docta Complutense
RD 14 dic 2025