Renormalization group equations in resonance chiral theory: the pi pi vector form-factor

Details Renormalization group equations in resonance chiral theory: the pi pi vector form-factor Renormalization group equations in resonance chiral theory: the pi pi vector form-factor

2009-10-14

arxiv.org/abs/0910.2556v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 2 figures, PoS style

Scientific paper

The use of the equations of motion and meson field redefinitions allows the simplification of the subleading operators required in the one-loop resonance chiral theory calculation of the pi pi vector form-factor. The study of the renormalization group equations of the relevant parameters shows the existence of an infrared fixed point for all the couplings. It is important to remark that this result does not rely on the high-energy form-factor constraints, which are often considered in other works. The possibility of developing a perturbative 1/Nc expansion in the slow running region around the fixed point is shown here.

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