Aachen 2019 – scientific programme

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T: Fachverband Teilchenphysik

T 28: Higgs-Zerfälle in Fermionen I

T 28.3: Talk

Tuesday, March 26, 2019, 16:35–16:50, H04

Observation of H→ bb decay with the CMS experiment — •Luca Mastrolorenzo and Alexander Schmidt — RWTH Aachen University - III. Physikalisches Institut A

The first observation of the Higgs boson decay into a bottom and anti-bottom quarks by the ATLAS and CMS Collaboration in summer 2018 represents a discovery of major importance towards the characterization of the Yukawa couplings. Even though this decay channel is the one with the highest predicted branching fraction, the detection of such events is extremely challenging at a hadron collider environment because the overwhelming production of hadronic jets from QCD events. In order to maximise the sensitivity to the H→ bb signal, sophisticated analysis techniques have been deployed relying on the exploitation of Deep Neural Networks along the whole analysis chain. In this talk, the CMS observation of the H→ bb decay will be presented focussing on the analysis of the data collected by the experiment during the 2017 Run of the LHC and targeting the identification of events where a Higgs boson is produced in association with a vector boson.