Uncovering latent jet substructure(15'+5')

Jul 23, 2019, 4:20 PM
20m
32-123 (MIT)

32-123

MIT

https://goo.gl/maps/Wx14Gpe2wRy

Speaker

Dr Barry Dillon (Jozef Stefan Institute)

Description

We apply techniques from Bayesian generative statistical modeling to uncover hidden features in jet substructure observables that discriminate between different a priori unknown underlying short distance physical processes in multi-jet events. In particular, we use a mixed membership model known as Latent Dirichlet Allocation to build a data-driven unsupervised top-quark tagger and ttbar event classifier. We compare our proposal to existing traditional and machine learning approaches to top jet tagging. Finally, employing a toy vector-scalar boson model as a benchmark, we demonstrate the potential for discovering New Physics signatures in multi-jet events in a model independent and unsupervised way.

Primary authors

Dr Barry Dillon (Jozef Stefan Institute) Darius Faroughy (Jozef Stefan Institute) Jernej F. Kamenik (Jozef Stefan Institute)

Presentation materials