QED vertex form factors at two loops

Details QED vertex form factors at two loops QED vertex form factors at two loops

2003-07-23

arxiv.org/abs/hep-ph/0307295v1

Nucl.Phys. B676 (2004) 399-452

Physics

High Energy Physics

High Energy Physics - Phenomenology

53 pages, 3 figures

Scientific paper

We present the closed analytic expression of the form factors of the two-loop QED vertex amplitude for on-shell electrons of finite mass $m$ and arbitrary momentum transfer $S=-Q^2$. The calculation is carried out within the continuous $D$-dimensional regularization scheme, with a single continuous parameter $D$, the dimension of the space-time, which regularizes at the same time UltraViolet (UV) and InfraRed (IR) divergences. The results are expressed in terms of 1-dimensional harmonic polylogarithms of maximum weight 4.

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