| Article | |
| Report number | arXiv:1507.05902 ; FERMILAB-PUB-15-648-CD-ND |
| Title | First proof of topological signature in high pressure xenon gas with electroluminescence amplification |
| Author(s) |
Ferrario, P. (Valencia U., IFIC) ; Laing, A. (Valencia U., IFIC) ; López-March, N. (Valencia U., IFIC) ; Gómez-Cadenas, J.J. (Valencia U., IFIC) ; Álvarez, V. (Valencia U., IFIC) ; Azevedo, C.D.R. (Aveiro U.) ; Borges, F.I.G. (Coimbra U.) ; Cárcel, S. (Valencia U., IFIC) ; Cebrián, S. (U. Zaragoza, LFNAE) ; Cervera, A. (Valencia U., IFIC) ; Conde, C.A.N. (Coimbra U.) ; Dafni, T. (U. Zaragoza, LFNAE) ; Díaz, J. (Valencia U., IFIC) ; Diesburg, M. (Fermilab) ; Esteve, R. (Valencia, Polytechnic U.) ; Fernandes, L.M.P. (Coimbra U.) ; Ferreira, A.L. (Aveiro U.) ; Freitas, E.D.C. (Coimbra U.) ; Gehman, V.M. (Brookhaven) ; Goldschmidt, A. (Brookhaven) ; González-Díaz, D. (CERN) ; Gutiérrez, R.M. (Antonio Narino U.) ; Hauptman, J. (Iowa State U.) ; Henriques, C.A.O. (Coimbra U.) ; Hernando Morata, J.A. (Santiago de Compostela U., IGFAE) ; Irastorza, I.G. (U. Zaragoza, LFNAE) ; Labarga, L. (Madrid, Autonoma U.) ; Lebrun, P. (Fermilab) ; Liubarsky, I. (Valencia U., IFIC) ; Lorca, D. (Valencia U., IFIC) ; Losada, M. (Antonio Narino U.) ; Luzón, G. (U. Zaragoza, LFNAE) ; Marí, A. (Valencia, Polytechnic U.) ; Martín-Albo, J. (Valencia U., IFIC) ; Martínez-Lema, G. (Santiago de Compostela U., IGFAE) ; Martínez, A. (Valencia U., IFIC) ; Miller, T. (Brookhaven) ; Monrabal, F. (Valencia U., IFIC) ; Monserrate, M. (Valencia U., IFIC) ; Monteiro, C.M.B. (Coimbra U.) ; Mora, F.J. (Valencia, Polytechnic U.) ; Moutinho, L.M. (Aveiro U.) ; Muñoz Vidal, J. (Valencia U., IFIC) ; Nebot-Guinot, M. (Valencia U., IFIC) ; Novella, P. (Valencia U., IFIC) ; Nygren, D. (Brookhaven) ; Para, A. (Fermilab) ; Pérez, J. (Madrid, Autonoma U.) ; Pérez Aparicio, J.L. (Valencia, Polytechnic U.) ; Querol, M. (Valencia U., IFIC) ; Renner, J. (Valencia U., IFIC) ; Ripoll, L. (Girona U.) ; Rodríguez, J. (Valencia U., IFIC) ; Santos, F.P. (Coimbra U.) ; dos Santos, J.M.F. (Coimbra U.) ; Serra, L. (Valencia U., IFIC) ; Shuman, D. (Brookhaven) ; Simón, A. (Valencia U., IFIC) ; Sofka, C. (Texas A-M) ; Sorel, M. (Valencia U., IFIC) ; Toledo, J.F. (Brookhaven) ; Torrent, J. (Girona U.) ; Tsamalaidze, Z. (Dubna, JINR) ; Veloso, J.F.C.A. (Aveiro U.) ; Villar, J.A. (U. Zaragoza, LFNAE) ; Webb, R. (Texas A-M) ; White, J.T. (Texas A-M) ; Yahlali, N. (Valencia U., IFIC) ; Yepes-Ramírez, H. (Antonio Narino U.) |
| Publication | 2016-01-19 |
| Imprint | 21 Jul 2015 |
| Number of pages | 18 |
| Note | 18 pages, 20 figures |
| In: | JHEP 01 (2016) 104 |
| DOI | 10.1007/JHEP01(2016)104 |
| Subject category | Detectors and Experimental Techniques |
| Accelerator/Facility, Experiment | NEXT |
| Abstract | The NEXT experiment aims to observe the neutrinoless double beta decay of xenon in a high-pressure Xe136 gas TPC using electroluminescence (EL) to amplify the signal from ionization. One of the main advantages of this technology is the possibility to reconstruct the topology of events with energies close to Qbb. This paper presents the first demonstration that the topology provides extra handles to reject background events using data obtained with the NEXT-DEMO prototype. Single electrons resulting from the interactions of Na22 1275 keV gammas and electron-positron pairs produced by conversions of gammas from the Th228 decay chain were used to represent the background and the signal in a double beta decay. These data were used to develop algorithms for the reconstruction of tracks and the identification of the energy deposited at the end-points, providing an extra background rejection factor of 24.3 +- 1.4 (stat.)%, while maintaining an efficiency of 66.7 +- 0.6 (stat.)% for signal events. |
| Copyright/License | arXiv nonexclusive-distrib. 1.0 publication: © 2016-2025 The Author(s) (License: CC-BY-4.0), sponsored by SCOAP³ |
Corresponding record in: Inspire
Registre creat el 2015-07-22, darrera modificació el 2022-08-10
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