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RESEARCH PRODUCT
Nonperturbative approach to effective chiral Lagrangians and meson interactions
José R. PeláezJosé Antonio OllerEulogi Osetsubject
PhysicsParticle physicsFísica-Modelos matemáticosUnitarityMesonNuclear TheoryFOS: Physical sciencesGeneral Physics and AstronomyFísicaUnitary stateNuclear Theory (nucl-th)symbols.namesakeHigh Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)symbolsFísica matemáticaHigh Energy Physics::ExperimentNuclear ExperimentNuclear theoryLagrangianFree parameterdescription
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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1998-03-04 |