Speaker
Mr
Maik Hoeschele
(Institut für Theoretische Teilchenphysik, Karlsruher Institut für Technologie)
Description
The framework of simultaneous decoupling of two heavy quarks in QCD is
discussed. In particular we compute the decoupling constant for $\alpha_s$
with massive charm and bottom quarks to three-loop accuracy taking
into account the exact dependence on $m_c/m_b$. The application of a
low-energy theorem on this quantity allows for the extraction of the
three-loop effective Higgs-gluon coupling valid for extensions of the
Standard Model with additional heavy quarks.
Primary authors
Dr
Andrey Grozin
(Budker Institute of Nuclear Physics, Novosibirsk)
Mr
Jens Hoff
(Institut für Theoretische Teilchenphysik, Karlsruher Institut für Technologie)
Mr
Maik Hoeschele
(Institut für Theoretische Teilchenphysik, Karlsruher Institut für Technologie)
Prof.
Matthias Steinhauser
(Institut für Theoretische Teilchenphysik, Karlsruher Institut für Technologie)
