Choose timezone
Your profile timezone:
Description
Judith Katzy obtained her PhD 1997 at the University of Heidelberg. After postdoctoral positions at University of Illinois at Chicago and at the Massachusetts Institute of Technology in Boston, she started as DESY staff member in 2001. She did her habilitation at the Humboldt University at Berlin where she has the venia legendi. Her experimental work at the LHC focuses on Higgs and top physics, particularly ttH. In the past, she convened the ATLAS Physics Modeling group and the sub-group on ttH.
Sebastian Wuchterl completed his PhD in 2023 at the University of Hamburg and DESY. He is currently a research fellow at CERN, working within the CMS Collaboration. His research focuses on the characterization of the top quark and the Higgs boson, with an emphasis on precision measurements of the top quark mass and the Yukawa coupling of the Higgs boson to fermions, particularly charm quarks. Sebastian currently serves as the convener of the CMS jet flavor tagging physics group.
Abstract
The associated production of a Higgs boson with a pair of top quarks (ttH) provides direct access to the Higgs boson's Yukawa coupling to top quarks. The decay channel H → bb is particularly interesting as it has by far the largest branching ratio and therefore allows to measure ttH also in highly suppressed regions such as at high Higgs pT. However, the challenges are in the large irreducible backgrounds of tt production with associated heavy-flavor jets (b/c). In this discussion, we will present the latest ttH(bb) results from the ATLAS and CMS Collaborations, with a focus on recent experimental advances and the treatment of the dominant background. Finally, we will also introduce ttH(cc) production as a novel search channel to probe the Higgs boson's coupling to charm quarks at the LHC.
