Three-pseudoscalar photon interactions in chiral perturbation theory

Johan Bijnens, Albert Bramon, Fernando Cornet

Research output: Contribution to journalArticleResearchpeer-review

84 Citations (Scopus)


We have calculated the next to leading corrections to the processes γπ- → π0π- and η → π+π-γ in chiral perturbation theory. The loop diagrams are divergent, requiring the contributions from the O(p6) lagrangian. The finite parts of the coefficients of the O(p6) terms are calculated assuming their saturation by the vector meson contribution. These corrections improve the agreement between the theoretical predictions and the experimental data. © 1990.
Original languageEnglish
Pages (from-to)488-494
JournalPhysics Letters B
Issue number3-4
Publication statusPublished - 22 Mar 1990


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