Dortmund 2021 – scientific programme

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T: Fachverband Teilchenphysik

T 30: Higgs decay in fermions II

T 30.2: Talk

Tuesday, March 16, 2021, 16:15–16:30, Te

Search for standard model Higgs boson decaying into a charm quark-antiquark pair with the CMS experiment — •Luca Mastrolorenzo, Alexander Schmidt, Andrey Pozdnyakov, Xavier Coubez, Andrzej Novak, Spandan Mondal, and Alena Dodonova — RWTH, Aachen, Germany

In this talk, the search for a standard model Higgs boson decaying into a charm quark-antiquark pair with the data collected by the CMS experiment during the 2016 data-taking period is presented. The search targets Higgs boson production in association with a vector boson (Z,W). To maximally enhance the analysis sensitivity and fully exploit the topology of the Higgs boson decay, two strategies are followed. In the first one, targeting lower vector boson transverse momentum, the Higgs boson candidate is reconstructed via two resolved jets arising from the two charm quarks from the Higgs boson decay. A second strategy identifies the case where the two charm quark jets from the Higgs boson decay merge to form a single jet, which generally only occurs when the vector boson has higher transverse momentum. One of the crucial aspects of the analysis is represented by the capability to correctly identify jets originating from charm quarks. To reach this goal, charm-taggers based on advanced machine learning algorithms have been deployed. The result achieved in this analysis represents the most stringent limit on the Higgs decay to charm quark-antiquark pair production cross-section to-date.