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T: Fachverband Teilchenphysik
T 61: Higgs Boson: Decay in Bosons
T 61.7: Talk
Wednesday, March 23, 2022, 17:45–18:00, T-H20
Search for non-resonant Higgs boson pair production in the bbbb final state with the CMS Experiment — Martin Erdmann, Peter Fackeldey, •Benjamin Fischer, and Dennis Noll — III. Physikalisches Institut A, RWTH Aachen University
The non-resonant Higgs boson pair production enables probing the shape of the Higgs potential, in particular the triple Higgs self coupling λhhh. The decay channel with the highest branching ratio of ∼ 1/3 has a four-b-quark final state.
This phase space is dominated by QCD-processes, which are challenging to model using Monte Carlo samples. A data-driven modeling is implemented through a Neural Network based reweigthing from a sideband region into the signal region. Through a Neural Network based multi-classification both Di-Higgs production modes, gluon- and vector-boson-fusion, are separated from background processes for the statistical inference.