Bonn 2020 – wissenschaftliches Programm
Die DPG-Frühjahrstagung in Bonn musste abgesagt werden! Lesen Sie mehr ...
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
T: Fachverband Teilchenphysik
T 58: Higgs: associated production
T 58.5: Vortrag
Mittwoch, 1. April 2020, 17:30–17:45, H-1.002
Search for the ttH(H→ bb) process utilising improvements in Deep-Neural-Network-based b-tagging in ATLAS — •Manuel Guth and Andrea Knue — Uni Freiburg, Freiburg
ATLAS and CMS recently discovered the ttH production channel using LHC Run 2 data. However the ttH(H→ bb) process is not yet discovered due to its irreducible tt+bb background and corresponding systematic uncertainties. The process allows a direct measurement of the Top-Yukawa coupling which is the strongest fermion-Higgs coupling in the Standard Model and plays therefore an important role in Higgs physics.
The challenging final state with at least 4 b-jets requires an advanced analysis strategy as well as sophisticated b-tagging algorithms.
The data collected during Run 2 with the ATLAS experiment allows to explore Higgs boson properties in the ttH(H→ bb) channel for the first time. Since this channel allows a reconstruction of the Higgs transverse momentum, a simplified cross-section measurement in bins of different Higgs pT is possible. A first study of this measurement will be presented, followed by an outlook to planned improvements based on new b-tagging developments.