O(N_fα^2) Corrections to Muon Decay

Details O(N_fα^2) Corrections to Muon Decay O(N_fα^2) Corrections to Muon Decay

1997-06-19

arxiv.org/abs/hep-ph/9706422v1

Acta Phys.Polon.B28:599-605,1997

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages LaTeX. 3 figures. Uses amstex.sty, amssymb.sty, cite.sty and epsfig.sty. Talk presented at 3rd International Symposium

Scientific paper

The calculation of the $O(N_f\alpha^2)$ corrections to muon decay is described. These are the 2-loop diagrams containing a massless fermion loop and they form an important gauge-invariant subclass. It is shown that all such diagrams can be expressed in terms of a universal master integral. We focus on the calculation of box diagrams and in particular on the removal of their infrared divergences.

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