Jul 4 – 11, 2018
COEX, SEOUL
Asia/Seoul timezone

Supervising Deep Neural Networks with Topological Augmentation in search for di-Higgs Production at the LHC

Jul 6, 2018, 2:45 PM
15m
103 (COEX, Seoul)

103

COEX, Seoul

Parallel Higgs Physics Higgs Physics

Speaker

Dr Won Sang Cho (Seoul National University)

Description

We present a new machine learning technique for the classification of scattering processes which include invisible particles missing in detector. With this purpose, new high-level feature variables are introduced, which can be obtained in the process of topological augmentation – a general reconstruction procedure of invisible missing momenta subject to various hypothetical decay topologies. Given visible particle information, each augmented feature can be used as an optimized event projection basis, and we utilize them all in together for the classification of many hypothetical topologies possibly involved. As an important application, we focus on the (non-resonant) di-Higgs production in the channel of 2 b-jets, 2 leptons + MET, and demonstrate our new multi-class classification analysis using deep neural networks supervised by the topologically augmented features. We provide an update on the future expectation of di-Higgs discovery at the LHC, and discuss on the importance of our method for general scattering processes with missing information, which can even improve the conventional deep learning technique which works well with full visible low-level information.

Primary authors

Dr Won Sang Cho (Seoul National University) Dr Chan Beom Park (Center for Theoretical Physics of the Universe, IBS) Dr Jae-hyeon Park (KIAS) Dongsub Lee (Seoul National University)

Presentation materials

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