Search for the Standard Model Higgs boson produced in association with top quarks with the ATLAS detector

Abstract

After the discovery of a new particle consistent with the Higgs boson in 2012, the direct observation and measurement of the coupling of this particle to top quarks has become increasingly important. In this talk, a review of the latest ATLAS results on the search for the Higgs boson produced in association with top quarks, tt̄H, is presented. In particular, three analyses aiming at different tt̄H final states are reviewed. These include a search with the Higgs boson decaying to bb̄, a search in multileptonic final states and a search with H → γγ. The results from these analyses are combined, giving a tt̄H signal strength of 1:8±0:8 and excluding a tt̄H signal 3.2 larger than the SM expectation at 95% confidence level for a SM Higgs boson with a mass of 125.36 GeV.