Bosonic Corrections to $Δr$ at the Two Loop Level

Details Bosonic Corrections to $Δr$ at the Two Loop Level Bosonic Corrections to $Δr$ at the Two Loop Level

2002-09-08

arxiv.org/abs/hep-ph/0209084v1

Phys.Rev. D68 (2003) 053004

Physics

High Energy Physics

High Energy Physics - Phenomenology

26 pp, 13 figs

Scientific paper

10.1103/PhysRevD.68.053004

The details of the recent calculation of the two-loop bosonic corrections to the muon lifetime in the Standard Model are presented. The matching on the Fermi theory is discussed. Renormalisation in the on-shell and in the MS scheme is studied and transition between the schemes is shown to lead to identical results. High precision numerical methods are compared with mass difference and large mass expansions.

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