Münster 2017 – wissenschaftliches Programm
T 28.1: Vortrag
Dienstag, 28. März 2017, 11:00–11:15, JUR 3
Search in the Associated Higgs Boson Top-Quark Production Channel ttH→ 2ℓ + 1 τhad at √s= 13 TeV with ATLAS — •Andre Sopczak1, Babar Ali1, Marine Kuna2, and Simonetta Gentile2 — 1IEAP CTU in Prague — 2Universita di Roma, La Sapienza, INFN
After the discovery of a Higgs boson, the measurements of its properties are at the forefront of research. The determination of the associated production of a Higgs boson and a pair of top quarks is of particular importance as the ttH Yukawa coupling is large, and thus a probe for physics beyond the Standard Model.
The ttH production was analysed in the final state with two same-sign light leptions (electrons or muons) and a hadronically decaying tau lepton: ttH → 2ℓ + 1 τhad. The analysis was based on data taken by the ATLAS experiment recorded from 13 TeV proton-proton collisions. It contributed to the combined ATLAS results of four multi-lepton final state analyses. These results were further combined with other ATLAS ttH analyses where H→ γγ and H→ bb. The combined results are consistent with the Standard Model (SM) expectation allowing models beyond the SM to be constrained.