Chiral logarithms to five loops

Details Chiral logarithms to five loops Chiral logarithms to five loops

2006-12-08

arxiv.org/abs/hep-ph/0612096v1

Phys.Lett.B646:72-79,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages, 5 figures

Scientific paper

10.1016/j.physletb.2007.01.025

We investigate two specific Green functions in the framework of chiral perturbation theory. We show that, using analyticity and unitarity, their leading logarithmic singularities can be evaluated in the chiral limit to any desired order in the chiral expansion, with a modest calculational cost. The claim is illustrated with an evaluation of the leading logarithm for the scalar two-point function to five-loop order.

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