Deep learning for the classification of quenched jets

• Autor(a) principal: Apolinário,L.
• Data de Publicação: 2021
• Outros Autores: Castro, Nuno Filipe, Romão, M. Crispim, Milhano, J. G., Pedro, R., Peres, F. C. R.
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
• Texto Completo: http://hdl.handle.net/1822/75048
• topic: Heavy Ion Phenomenology; Jets; Ciências Naturais::Ciências Físicas; Science & Technology; Indústria, inovação e infraestruturas

An important aspect of the study of Quark-Gluon Plasma (QGP) in ultra-relativistic collisions of heavy ions is the ability to identify, in experimental data, a subset of the jets that were strongly modified by the interaction with the QGP. In this work, we propose studying deep learning techniques for this purpose. Samples of $Z+$jet events were simulated in vacuum and medium and used to train deep neural networks with the objective of discriminating between medium- and vacuum-like jets. Dedicated Convolutional Neural Networks, Dense Neural Networks and Recurrent Neural Networks were developed and trained, and their performance was studied. Our results show the potential of these techniques for the identification of jet quenching effects induced by the presence of the QGP.