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The role of resonances in chiral perturbation theory

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The role of resonances in chiral perturbation theory

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dc.contributor.author Ecker, Gerhard
dc.contributor.author Gasser, Jürg
dc.contributor.author Pich Zardoya, Antonio
dc.contributor.author Rafael, Eduardo de
dc.date.accessioned 2015-02-25T11:17:31Z
dc.date.available 2015-02-25T11:17:31Z
dc.date.issued 1989
dc.identifier.citation Ecker, Gerhard Gasser, Jürg Pich Zardoya, Antonio Rafael, Eduardo de 1989 The role of resonances in chiral perturbation theory Nuclear Physics B 321 2 311 342
dc.identifier.uri http://hdl.handle.net/10550/42270
dc.description.abstract The strong interactions of low-lying meson resonances (spin <= 1) with the octet of pseudoscalar mesons ( pi, K, eta) are considered to lowest order in the derivative expansion of chiral SU(3). The resonance contributions to the coupling constants of the O( p4) effective chiral lagrangian involving pseudoscalar fields only are determined. These low-energy coupling constants are found to be dominated by the resonance contributions. Although we do not treat the vector and axial-vector mesons as gauge bosons of local chiral symmetry, vector meson dominance emerges as a prominent result of our analysis. As a further application of chiral resonance couplings, we calculate the electromagnetic pion mass difference to lowest order in chiral perturbation theory with explicit resonance fields.
dc.language.iso eng
dc.relation.ispartof Nuclear Physics B, 1989, vol. 321, num. 2, p. 311-342
dc.subject Física
dc.title The role of resonances in chiral perturbation theory
dc.type journal article es_ES
dc.date.updated 2015-02-25T11:17:31Z
dc.identifier.doi 10.1016/0550-3213(89)90346-5
dc.identifier.idgrec 081650
dc.rights.accessRights open access es_ES

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