Radiative four-meson amplitudes in chiral perturbation theory

1996/03/19 by G. D'Ambrosio, G. Ecker, G. Isidori +1 · 1 citation
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.1016/0370-2693(96)00520-5

published as Phys.Lett. B380 (1996) 165-170 · 8 pages, LaTex file, 1 figure. Full postscript version at this URL http://hpteor.lnf.infn.it/dafnepapers.html

arxiv created 1996/03/19 · openalex publication_date 1996/07/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We present a general discussion of radiative four--meson processes to O(p⁴) in chiral perturbation theory. We propose a definition of ``generalized bremsstrahlung'' that takes full advantage of experimental information on the corresponding non--radiative process. We also derive general formulae for one--loop amplitudes which can be applied, for instance, to η\ra 3πγ, ππ\ra ππγ and K \ra 3πγ.

Citations

• Chiral perturbation theory to one loop
• Chiral perturbation theory: Expansions in the mass of the strange quark
• Phenomenological Lagrangians

Cited by

• The s → dγ decay in and beyond the Standard Model