Leading Chiral Logarithms for Pion Form Factors to Arbitrary Number of Loops

Details Leading Chiral Logarithms for Pion Form Factors to Arbitrary Number of Loops Leading Chiral Logarithms for Pion Form Factors to Arbitrary Number of Loops

2009-04-20

arxiv.org/abs/0904.3008v1

JETP Lett.89:529-534,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages

Scientific paper

10.1134/S0021364009110022

We develop the method of calculation of the leading chiral (infrared) logarithms to an arbitrary loop order for various form factors of Nambu-Goldstone bosons. The method is illustrated on example of scalar and vector form factors in massless 4D O(N+1)/O(N) sigma-model. The analytical properties of the form factors are derived. The leading chiral (infrared) logarithms are summed up in the large N limit.

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