Fonctionne avec Indico
v3.2.8
In the Standard Model (SM) of particle physics, the Higgs boson is deeply related to the mechanism that creates the masses of elementary particles and, as such, has very characteristic properties, which are different from any other known particle. The large data samples collected at the LHC, together with new analysis techniques, allow measurements of Higgs boson production and properties at unprecedented precision. The results play a crucial role in probing the SM and provide a unique window to revealing potential new physics effects.
The coupling of the Higgs boson to the heaviest known quark, the top quark, is particularly exciting because it is large and, therefore, has a strong impact on the SM or possible new physics. The best direct measurement of the top-Higgs coupling is achieved in events where a top quark-antiquark pair is produced in association with a Higgs boson (ttH production). In the presentation, I will review the status of ttH measurements, and I will present a new result by the CMS Collaboration in the bb decay channel of the Higgs boson. The analysis benefits from improved modelling of the challenging background due to tt+bb production as well as refined analysis methods exploiting advanced machine-learning techniques. Finally, I will outline prospects for future ttH measurements at the ongoing LHC Run 3 and the High-Luminosity LHC.
Refreshments will be served after the seminar!
Sabine Kraml