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Heidelberg 2022 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 91: Higgs Boson: Rare Decays

T 91.3: Vortrag

Donnerstag, 24. März 2022, 16:45–17:00, T-H22

Employing Matrix Elements with Neural Networks to Search for Higgs Self-coupling — •Christoph Ames, Otmar Biebel, and Lars Linden — Ludwigs-Maximillians-Universität, Munich

The Higgs boson was discovered in 2012 as predicted by the Standard Model, however, not all of its predicted couplings have been measured yet. One such coupling is the Higgs self-coupling, in which a Higgs boson decays into two further Higgs bosons. By integrating over all possible initial states and by using the details of the end state, the matrix element method evaluates the weight of an event for the specific production cross section. In this work, machine learning is combined with the matrix element method to search for HHb b W+ W using simulated data. A neural network is trained to calculate the matrix element weight of an event and to use this to determine whether the event contains a signal or a background decay.

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