2008/10/01 by B. A. Kniehl, B.A. Kniehl, A. V. Kotikov +3
Engineering · Physics and Astronomy · #Atomic and Molecular Physics #Muon and positron interactions and applications #Quantum and Classical Electrodynamics #hep-ph
paper · pdf · doi:10.1016/j.nuclphysbps.2008.09.075
Presented at 9th Workshop on Elementary Particle Theory: Loops and Legs in Quantum Field Theory, Sondershausen, 20-25 Apr 2008. 6 pages, 3 figures
openalex publication_date 2008/10/01 · arxiv created 2008/11/03 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We establish irrational constants, that contribute to the positronium lifetime at O(α) and O(α2) order. In particular we show, that a new type of constants appear, which are not related to Euler--Zagier sums or multiple ζ values.