η−η′ mixing from U(3)L⊗U(3)R chiral perturbation theory

1997/10/07 by Paula Herrera-Siklódy, P. Herrera-Siklódy, José I. Latorre +3
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/s0370-2693(97)01507-4

published as Phys.Lett. B419 (1998) 326-332 · LateX, 10 pages

arxiv created 1997/10/07 · openalex publication_date 1998/02/01 · arxiv updated 2009/11/30 · openalex created_date 2017/05/26 · openalex updated_date 2026/07/28

Abstract

We obtain explicit expressions for the ηand η' masses and decay constants using U_L(3) x U_R(3) chiral perturbation theory at next-to-leading order in a combined expansion in p² and 1/Nc. A numerical fit of the parameters appearing to this order of the expansion is also discussed.

Citations

• Mixing of η-η′ mesons in decays into a vector and a pseudoscalar meson
• Chiral effective lagrangian in the large-N limit: the nonet case
• Chiral perturbation theory: Expansions in the mass of the strange quark