Würzburg 2018 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 33: Higgs II

T 33.8: Vortrag

Dienstag, 20. März 2018, 18:15–18:30, Z6 - HS 0.004

Search for single top + Higgs (H→ bb) at the CMS experiment at √s=13 TeV — •Kevin Flöh, Thorsten Chwalek, Nils Faltermann, Denise Müller, Thomas Müller, and David Seith — Institut für Experimentelle Teilchenphysik (ETP), Karlsruher Institut für Technologie (KIT)

The production of a single top quark in association with a Higgs boson can be used to lift the degeneracy regarding the sign of the top quark Yukawa coupling. The t-channel and tW-channel single top + Higgs production with the Higgs boson decaying into a bb pair are analyzed.
The Higgs boson can be radiated off by the top quark (coupling constant κ_t) or by the W boson (coupling constant κ_v). The interference between these two processes allows the access to the ratio of coupling constants. Boosted decision trees are used to reconstruct the signal processes and the tt background process as well as for the classification of the events. Exclusion limits are set on various κ_v-κ_t scenarios and models with CP-violation.