Electromagnetic corrections in partially quenched chiral perturbation theory

2006/10/30 by Johan Bijnens, Niclas Danielsson
Physics and Astronomy · #Chiral perturbation theory #High-Energy Particle Collisions Research #Meson #Particle physics #Particle physics theoretical and experimental studies #Perturbation (astronomy) #Perturbation theory (quantum mechanics) #Photon #Physics #Quantum Chromodynamics and Particle Interactions #Quantum electrodynamics #Quantum mechanics #Quark #Valence (chemistry) #hep-lat

paper · pdf · doi:10.1103/physrevd.75.014505

published as Phys.Rev.D75:014505,2007 · 11 pages

arxiv created 2006/10/30 · openalex publication_date 2007/01/19 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We introduce photons in partially quenched chiral perturbation theory and calculate the resulting electromagnetic loop-corrections at next-to-leading-order (NLO) for the charged meson masses and decay constants. We also present a numerical analysis to indicate the size of the different corrections. We show that several phenomenologically relevant quantities can be calculated consistently with photons which couple only to the valence quarks, allowing the use of gluon configurations produced without dynamical photons.

Citations

• Chiral perturbation theory to one loop
• Electromagnetic corrections in hadronic processes
• Chiral perturbation theory for the quenched approximation of QCD
• Four-point correlator constraints on electromagnetic chiral parameters and resonance effective Lagrangians
• Chiral perturbation theory: Expansions in the mass of the strange quark
• Three-flavor partially quenched chiral perturbation theory at NNLO for meson masses and decay constants
• Phenomenological Lagrangians