Heidelberg 2022 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 82: Invited Topical Talks 6

T 82.3: Eingeladener Vortrag

Donnerstag, 24. März 2022, 14:50–15:15, T-H16

Constraining the Higgs-charm Yukawa coupling with the CMS experiment — •Luca Mastrolorenzo — RWTH, Aachen, Germany

In this talk, an overview of the most recent results of the direct search for the VH, H→cc process with the CMS experiment is presented. The search targets Higgs bosons produced in association with a vector boson (W, Z) exploiting the full Run-2 data set. The analysis is carried out in mutually exclusive channels selecting specific leptonic decays of the vector bosons: Z→ℓℓ, Z→νν, W→ℓν, with ℓ=electron or muon. To fully exploit the topology of the Higgs boson decay in the different regimes of the Higgs boson transverse momentum, two strategies have been adopted aiming to reconstruct the Higgs boson candidate through two distinct Ak4 jets or via a unique Ak15 "fat-jet". Remarkable improvements have been brought to the analysis techniques with respect to the previous public results: from new and more efficient algorithms to tag charm-initiated jets to dedicated jet energy and mass regression techniques, conceived exploiting advanced machine learning methods. The analysis strategy has been extensively validated by observing the VZ, Z→cc process for the first time at a hadron collider experiment. The results represent the world’s most stringent limit on the VH, H→cc process and on the Higgs-charm Yukawa coupling.