HEP2025: 41st Conference on Recent Developments in High Energy Physics and Cosmology [NKUA]

Data-Driven Background Estimation for tt̄H(H→bb̄) in the Dilepton Channel with CMS

2 Jul 2025, 15:20

20m

“Alkis Argyriadis” Amphitheatre (National and Kapodistrian University of Athens)

Session 6

Speaker

Haris Painesis (National and Kapodistrian University of Athens (GR))

Description

Prospects for the measurement of top quark–antiquark associated Higgs boson production ($t\bar{t}H$) in Run 3 and the HL-LHC era are presented. The study is performed in the opposite-sign dilepton channel, focusing on the Higgs boson decay to bottom quarks ($H \rightarrow b\bar{b}$). A novel approach is introduced, and projection studies for the HL-LHC are explored. The analysis strategy relies on a data-driven method, the Tag Rate Function, to estimate the dominant background contribution from $t\bar{t}$ events. Improvements in the analysis are also investigated by applying the Run 3 tagging algorithm to simulated events.

Presentation materials

Bkg_prediction_ttHbbDL_HEP25_HP__transition.pdf