Scalar meson dynamics in chiral perturbation theory

Albert Bramon; Rafel Escribano; José Luís Lucio Martínez

doi:10.1103/PhysRevD.69.074008

Scalar meson dynamics in chiral perturbation theory

Albert Bramon, Rafel Escribano, José Luís Lucio Martínez

Department of Physics

Research output: Contribution to journal › Article › Research › peer-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 language	English
Pages (from-to)	7
Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	69
Issue number	7
DOIs	https://doi.org/10.1103/PhysRevD.69.074008
Publication status	Published - 1 Jan 2004

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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. {\textcopyright} 2004 The American Physical Society.",

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T1 - Scalar meson dynamics in chiral perturbation theory

AU - Bramon, Albert

AU - Escribano, Rafel

AU - Lucio Martínez, José Luís

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N2 - 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.

AB - 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.

U2 - 10.1103/PhysRevD.69.074008

DO - 10.1103/PhysRevD.69.074008

M3 - Article

VL - 69

SP - 7

JO - Physical Review D - Particles, Fields, Gravitation and Cosmology

JF - Physical Review D - Particles, Fields, Gravitation and Cosmology

SN - 1550-7998

IS - 7

ER -

Scalar meson dynamics in chiral perturbation theory

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