Dresden 2013 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 11: Elektroschwache Physik (Theorie) 2
T 11.3: Vortrag
Montag, 4. März 2013, 17:15–17:30, WIL-A120
Corrections of the order α αs to W boson decays — •Dominik Kara and Matthias Steinhauser — Institut für Theoretische Teilchenphysik, Karlsruher Institut für Technologie, D-76128 Karlsruhe, Germany
We compute the mixed two-loop electroweak and QCD corrections to hadronic W boson decays within the Standard Model. The optical theorem is applied to the W boson two-point function. The multi-scale integrals are computed with the help of asymptotic expansions which factorize the three-loop diagrams into one- and two-loop vacuum and propagator-type integrals.