Two-point Functions at Two Loops in Three Flavour Chiral Perturbation Theory

Details Two-point Functions at Two Loops in Three Flavour Chiral Perturbation Theory Two-point Functions at Two Loops in Three Flavour Chiral Perturbation Theory

1999-07-07

arxiv.org/abs/hep-ph/9907264v1

Nucl.Phys.B568:319-363,2000

Physics

High Energy Physics

High Energy Physics - Phenomenology

LaTeX2e, 42 pages

Scientific paper

10.1016/S0550-3213(99)00674-4

The vector and axial-vector two-point functions are calculated to next-to-next-to-leading order in Chiral Perturbation Theory for three light flavours. We also obtain expressions at the same order for the masses, $m_\pi^2$, $m_K^2$ and $m_\eta^2$, and the decay constants, $F_\pi$, $F_K$ and $F_\eta$. We present some numerical results after a simple resonance estimate of some of the new ${\cal O}(p^6)$ constants.

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