Semileptonic π and K decays and the chiral anomaly at one-loop

We calculate the O(p6) corrections to the anomalous form factors appearing in π+, K+ → e+νγ, μ+νγ and K14 decays in chiral perturbation theory. The relevant dimension 6 terms of the lagrangian are evaluated assuming their saturation by the vector meson contribution.

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Bibliographic Details
Published inPhysics letters. B Vol. 303; no. 1-2; pp. 140 - 146
Main Authors Ametller, Ll, Bijnens, J., Bramon, A., Cornet, F.
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier B.V 08.04.1993
Elsevier Science
Subjects
Exact sciences and technology
Leptonic and semileptonic decays of mesons
Physics
Specific reactions and phenomenology
The physics of elementary particles and fields
Particle desintegration
Perturbation theory
Lagrangian
Form factor
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Summary:We calculate the O(p6) corrections to the anomalous form factors appearing in π+, K+ → e+νγ, μ+νγ and K14 decays in chiral perturbation theory. The relevant dimension 6 terms of the lagrangian are evaluated assuming their saturation by the vector meson contribution.
ISSN:0370-2693
1873-2445
DOI:10.1016/0370-2693(93)90058-P