Background rejection in NEXT using deep neural networks

Renner, J. ; Farbin, A. ; Vidal, J.M. ; Benlloch-Rodríguez, J.M. ; Botas, A. ; Ferrario, P. ; Gómez-Cadenas, J.J. ; Álvarez, V. ; Azevedo, C.D.R. ; Borges, F.I.G. ; Cárcel, S. ; Carrión, J.V. ; Cebrián, S. (Universidad de Zaragoza) ; Cervera, A. ; Conde, C.A.N. ; Díaz, J. ; Diesburg, M. ; Esteve, R. ; Fernandes, L.M.P. ; Ferreira, A.L. ; Freitas, E.D.C. ; Goldschmidt, A. ; González-Díaz, D. ; Gutiérrez, R.M. ; Hauptman, J. ; Henriques, C.A.O. ; Morata, J.A.H. ; Herrero, V. ; Jones, B. ; Labarga, L. ; Laing, A. ; Lebrun, P. ; Liubarsky, I. ; López-March, N. ; Lorca, D. ; Losada, M. ; Martín-Albo, J. ; Martínez-Lema, G. ; Martínez, A. ; Monrabal, F. ; Monteiro, C.M.B. ; Mora, F.J. ; Moutinho, L.M. ; Nebot-Guinot, M. ; Novella, P. ; Nygren, D. ; Palmeiro, B. ; Para, A. ; Pérez, J. ; Querol, M. ; Ripoll, L. ; Rodríguez, J. ; Santos, F.P. ; Dos Santos, J.M.F. ; Serra, L. ; Shuman, D. ; Simón, A. ; Sofka, C. ; Sorel, M. ; Toledo, J.F. ; Torrent, J. ; Tsamalaidze, Z. ; Veloso, J.F.C.A. ; White, J. ; Webb, R. ; Yahlali, N. ; Yepes-Ramírez, H.

Resumen: We investigate the potential of using deep learning techniques to reject background events in searches for neutrinoless double beta decay with high pressure xenon time projection chambers capable of detailed track reconstruction. The differences in the topological signatures of background and signal events can be learned by deep neural networks via training over many thousands of events. These networks can then be used to classify further events as signal or background, providing an additional background rejection factor at an acceptable loss of efficiency. The networks trained in this study performed better than previous methods developed based on the use of the same topological signatures by a factor of 1.2 to 1.6, and there is potential for further improvement.

Idioma: Inglés

DOI: 10.1088/1748-0221/12/01/T01004

Año: 2017

Publicado en: Journal of Instrumentation 12, 1 (2017), [21 pp]
ISSN: 1748-0221

Factor impacto JCR: 1.258 (2017)

Categ. JCR: INSTRUMENTS & INSTRUMENTATION rank: 44 / 61 = 0.721 (2017) - Q3 - T3

Factor impacto SCIMAGO: 0.642 - Mathematical Physics (Q2) - Instrumentation (Q2)

Financiación: info:eu-repo/grantAgreement/EC/FP7/339787/EU/Towards the NEXT generation of bb0nu experimets/NEXT
Financiación: info:eu-repo/grantAgreement/ES/MINECO/Consolider-Ingenio-2010/CSD2008-00037
Financiación: info:eu-repo/grantAgreement/ES/MINECO/FIS2014-53371-C04

Tipo y forma: Artículo (Versión definitiva)

Área (Departamento): Área Física Atóm.Molec.y Nucl. (Dpto. Física Teórica)