Higgs Boson Mass Reconstruction Using Neural Network Approaches for ttH and tH Analyses

In 1964, the Higgs mechanism predicted a scalar boson: the Higgs boson. This particle was discovered at the LHC by the ATLAS and CMS Collaboration in 2012, completing the list of predicted particles in the Standard Model of particle physics. Since the Higgs boson is the latest discovered particle, it is especially important to analyze its properties. Hence, the top quark Yukawa coupling YtSM is of importance and one of the focal points of Higgs analysis. Moreover, the top quark is by far the heaviest quark and therefore a potential candidate to show a deviation from theory. ThetopquarkYukawacouplingcanbemeasuredintwoways. First, itcanbeobservedintopquarkpairproduction in association with a Higgs boson ttH {1}. Second, it can be examined by analysis of single top production in association with a Higgs boson (Figure 1).