Isospin Breaking in Low-Energy Charged Pion and Kaon Elastic Scattering

Abstract

We use chiral perturbation theory to evaluate the scattering amplitude for the process Pi^+ K^- to Pi^+ K^- at leading and next-to-leading orders in the chiral counting and in the presence of isospin breaking effects. We also discuss the influence of the latter on the combination of the S-wave Pi K scattering lengths which is relevant for the 2S - 2P energy levels shift of K Pi atoms.

23 pages, LATEX2e, 2 figures, 2 tables

Cited by in corpus (12)

• $\pi K$ Scattering in Three Flavour ChPT
• Four-point correlator constraints on electromagnetic chiral parameters and resonance effective Lagrangians
• Investigation of a0-f0 mixing
• Dispersive $\pi K\to \pi K$ and $\pi \pi \to K\bar{K}$ amplitudes from scattering data, threshold parameters and the lightest strange resonance $\kappa$ or $K_0^{\ast }(700)$
• Decay widths and energy shifts of pi pi and pi K atoms
• Spectra and decays of pi pi and pi K atoms
• Partial wave analysis of pbar-p to Lambdabar-Lambda
• The expansion by regions in pi K scattering
• Isospin odd pi K scattering length
• Explicit generating functional for pions and virtual photons
• Energy and decay width of the pi-K atom
• Chiral dynamics with strange quarks: Mysteries and opportunities