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T: Fachverband Teilchenphysik

T 82: Higgs IV

T 82.7: Vortrag

Donnerstag, 22. März 2018, 18:05–18:20, Z6 - HS 0.004

Search for non-resonant di-Higgs production in the decay channel bblν lν with the CMS experiment. — Martin Erdmann, Benjamin Fischer, •Dennis Noll, and Marcel Rieger — III. Physikalisches Institut A, RWTH Aachen University

An investigation of the non-resonant di-Higgs production can directly determine the trilinear Higgs coupling which is directly related to the Higgs potential. A search for a Higgs Boson decaying into a pair of Higgs Bosons, with one decaying into b quarks and the other one decaying into W bosons with subsequent decays into leptons is presented.

The investigated channel with two leptons in the final state has a low branching ratio in di-Higgs events but as a main feature avoids QCD contribution. A data driven modelling of the Drell-Yan process using an MVA technique accounts for low statistics in the Monte-Carlo background regime. Additionally, a deep neural network discriminant utilizing information related to object kinematics is used to increase the signal sensitivity.