# Differences

This shows you the differences between two versions of the page.

 — preprints:2002:ttp02-31 [2016/03/17 11:03] (current) Line 1: Line 1: + ====== TTP02-31 Bosonic Corrections to $\Delta r$ at the Two Loop Level ====== + + + 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 \MSb 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. + + |**M. Awramik, M. Czakon, A. Onishchenko, O. Veretin**  | + |**  Phys. Rev. D  68 053004 2003  **  | + | {{preprints:2002:ttp02-31.pdf|PDF}} {{preprints:2002:ttp02-31.ps|PostScript}} [[http://arxiv.org/abs/hep-ph/0209084|arXiv]]   | + | |