pi pi scattering, pion form factors and chiral perturbation theory

Abstract

I discuss recent progress in our understanding of the pi pi scattering amplitude at low energy thanks to the combined use of chiral perturbation theory and dispersion relations. I also comment on the criticism raised by Pelaez and Yndurain on this work.

arXiv comment10 pages, 5 figures. Invited talk at the "Quark Confinement and the Hadron Spectrum" VI Conference, Villasimius, Sardinia, Italy, 21-25 September 2004

References in corpus (15)

• Roy equation analysis of pi pi scattering
• Elastic $\pi \pi$ scattering to two loops
• The pi pi S-wave scattering lengths
• The quark condensate from K_{e_4} decays
• The pion-pion scattering amplitude
• High statistics measurement of Ke4 decay properties
• Separation of S- wave pseudoscalar and pseudovector amplitudes in pi^- p---> pi^+ pi^- n reaction on polarized target
• Scalar form factors of light mesons
• Determination of Two-Loop $\pi \pi$ Scattering Amplitude Parameters
• Elimination of ambiguities in pion-pion phase shifts using crossing symmetry
• pi pi scattering
• On the precision of chiral-dispersive calculations of $\pi \pi$ scattering
• The quadratic scalar radius of the pion and the mixed $\pi -K$ radius
• Chiral order and fluctuations in multi-flavour QCD
• Recent developments in chiral perturbation theory

Cited by in corpus (3)

• Study of the decay phi--> f0(980)g --> pi+pi-g with the KLOE detector
• Probing the convergence of perturbative series in baryon chiral perturbation theory
• Recent results from NA48