Speaker
Marco Niggetiedt
(University of Zurich)
Description
The decay into bottom quarks is the dominant decay channel of a Standard Model Higgs boson. Its precise theory description is crucial for extracting the bottom quark Yukawa coupling and mass from experimental measurements. The decay width has been computed through $\mathcal{O}(\alpha_s^4)$ assuming massless final states.
We report on the status of the corresponding four-loop calculation retaining the mass of the bottom quark. In particular, we focus on the contribution originating from the top quark Yukawa coupling induced process. The impact on the decay width due to different renormalization schemes for the Yukawa coupling and mass of the bottom quark is examined.
Authors
Long Chen
(Shandong University)
Marco Niggetiedt
(University of Zurich)
Dr
Xiang Chen
(University of Zurich)
Xin Guan
(SLAC)