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T: Fachverband Teilchenphysik
T 82: Higgs IV
T 82.3: Talk
Thursday, March 22, 2018, 17:00–17:15, Z6 - HS 0.004
Search for non-resonant Higgs boson pair production in the bbbb final state with the CMS Experiment — Martin Erdmann, •Benjamin Fischer, Dennis Noll, and Marcel Rieger — III. Physikalisches Institut A, RWTH Aachen University
The non-resonant Higgs boson pair production provides direct access to the triple Higgs self coupling λhhh and the underlying Higgs potential. The four-b-quark final state (bbbb) is the largest decay channel with a branching ratio of 1/3.
The background primarily consists of QCD-processes which are challenging to model using Monte Carlo samples. As a solution Hemisphere Mixing is employed, a new data-driven event modeling method. The signal extraction uses a discriminator produced by modern Deep Learning techniques, which is optimized taking into account the method-inherent systematics.