Resonance saturation in the odd-intrinsic parity sector of low-energy QCD

Details Resonance saturation in the odd-intrinsic parity sector of low-energy QCD Resonance saturation in the odd-intrinsic parity sector of low-energy QCD

2011-04-15

arxiv.org/abs/1104.3137v1

Phys.Rev.D84:014036,2011

Physics

High Energy Physics

High Energy Physics - Phenomenology

42 pages, 3 figures

Scientific paper

10.1103/PhysRevD.84.014036

Using the large N_C approximation we have constructed the most general chiral resonance Lagrangian in the odd-intrinsic parity sector that can generate low energy chiral constants up to O(p^6). Integrating out the resonance fields these O(p^6) constants are expressed in terms of resonance couplings and masses. The role of eta' is discussed and its contribution is explicitly factorized. Using the resonance basis we have also calculated two QCD Green functions of currents: and and found, imposing high energy constraints, additional relations for resonance couplings. We have studied several phenomenological implications based on these correlators from which let us mention here our prediction for the pi0-pole contribution to the muon g-2 factor: $a_\mu^{\pi^0} = 65.8(1.2)\times 10^{-11}$.

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