Low energy constants from Kℓ4 form-factors

1999/12/31 by G. Amorós, J. Bijnens, P. Talavera · 6 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.1016/s0370-2693(00)00384-1

published as Phys.Lett. B480 (2000) 71-76 · 6 pages, uses axodraw.sty, 2 figures, bug in program corrected, new numerical results

arxiv created 2000/02/29 · openalex publication_date 2000/05/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We have calculated the form-factors F and G in K ---> pi pi e nu decays (Kl4) to two-loop order in Chiral Perturbation Theory (ChPT). Combining this together with earlier two-loop calculations an updated set of values for the L's, the ChPT constants at p⁴, is obtained. We discuss the uncertainties in the determination and the changes compared to previous estimates.

Citations

• Chiral perturbation theory: Expansions in the mass of the strange quark
• Review of Particle Physics

Cited by

• Long-distance dimension-eight operators inBK
• The Standard Model prediction for ε′/ε
• Kaon decays in the standard model
• A new analysis of π K scattering from Roy and Steiner type equations
• form-factors and – scattering
• High statistics measurement ofKe4decay properties