Resonance Contributions to the Electromagnetic Low EnergyConstants of Chiral Perturbation
نویسنده
چکیده
The eeective chiral Lagrangian of the strong and electromagnetic interactions of the pseudoscalar mesons at low energies depends on a set of low energy constants. We determine the contributions to the electromagnetic coupling constants at order O(e 2 p 2), which arise from resonances within a photon loop. We give some implications of our results, in particular we discuss in detail the eeects on the corrections to Dashen's theorem.
منابع مشابه
Resonance Contributions to the Electromagnetic Low Energy Constants of Chiral Perturbation Theory
The effective chiral Lagrangian of the strong and electromagnetic interactions of the pseudoscalar mesons at low energies depends on a set of low energy constants. We determine the contributions to the electromagnetic coupling constants at order O(ep), which arise from resonances within a photon loop. We give some implications of our results, in particular we discuss in detail the effects on th...
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تاریخ انتشار 2007