Scalar meson dynamics in chiral perturbation theory

Albert Bramon, Rafel Escribano, José Luís Lucio Martínez

Research output: Contribution to journalArticleResearchpeer-review

8 Citations (Scopus)

Abstract

A comparison of the linear sigma model [Formula Presented] and chiral perturbation theory (ChPT) predictions for pion and kaon dynamics is presented. Lowest and next-to-leading order terms in the ChPT amplitudes are reproduced if one restricts to scalar resonance exchange. Some low energy constants of the order [Formula Presented] ChPT Lagrangian are fixed in terms of scalar meson masses. Present values of these low energy constants are compatible with the [Formula Presented] dynamics. We conclude that more accurate values would be most useful either to falsify the [Formula Presented] or to show its capability to shed some light on the controversial scalar physics. © 2004 The American Physical Society.
Original languageEnglish
Pages (from-to)7
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume69
Issue number7
DOIs
Publication statusPublished - 1 Jan 2004

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