Nonperturbative approach to effective chiral Lagrangians and meson interactions
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Nonperturbative approach to effective chiral Lagrangians and meson interactions

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Nonperturbative approach to effective chiral Lagrangians and meson interactions

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Oller Berber, José Antonio; Oset Báguena, Eulogio Perfil; Peláez Sagredo, José Ramón
This document is a artículoDate1998

Este documento está disponible también en : http://hdl.handle.net/10550/46854
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 sqrt{s}=1.2 GeV, dynamically generating the sigma, f_0, a_0,rho and K^* resonances. Further applications are also proposed.

    Oller Berber, José Antonio Oset Báguena, Eulogio Peláez Sagredo, José Ramón 1998 Nonperturbative approach to effective chiral Lagrangians and meson interactions Physical Review Letters 80 16 3452 3455
http://dx.doi.org/10.1103/PhysRevLett.80.3452

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