Speaker
Sergio Sanchez Cruz
(Universidad de Oviedo (ES))
Description
The production of a Higgs boson in association with a pair of top quarks (ttH) is presented. In particular the final states with multileptons targeting the WW, ZZ and tautau decays of the Higgs boson, are reported. The data set analyzed corresponds 41.4 fb$^{-1}$ of pp collisions recorded by the CMS experiment in 2017. Machine learning and matrix element techniques are used to enhance the sensitivity of the analysis. The results are also combined with those obtained in the 2016 data set. leading to an observed (expected) signal rate for the combined fit of 0.96$^{+0.34}_{-0.31}$ (1.00$^{+0.30}_{-0.27}$) times the expected rate in the standard model, which corresponds to an observed (expected) significance of 3.2 $\sigma$ (4.0 $\sigma$).
