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Sensitivity of NEXT-100 to neutrinoless double beta decay

NEXT-100 is an electroluminescent high-pressure xenon gas time projection chamber that will search for the neutrinoless double beta (0νββ) decay of 136Xe. The detector possesses two features of great value for 0νββ searches: energy resolution better than 1% FWHM at the Q value of 136Xe and track reconstruction for the discrimination of signal and background events. This combination results in excellent sensitivity, as discussed in this paper. Material-screening measurements and a detailed Monte Carlo detector simulation predict a background rate for NEXT-100 of at most 4 × 10−4 counts keV−1 kg−1 yr−1. Accordingly, the detector will reach a sensitivity to the 0νββ-decay half-life of 2.8 × 1025 years (90% CL) for an exposure of 100 kg·year, or 6.0 × 1025 years after a run of 3 effective years

Scuola Internazionale Superiore di Studi Avanzati (SISSA)

Author: Martín Albo, J.
Muñoz Vidal, J.
Ferrario, P.
Nebot Guinot, M.
Gómez Cadenas, J. J.
Álvarez, V.
Azevedo, C. D.R.
Borges, F. I.G.
Cárcel, S.
Carrión, J. V.
Cebrián, S.
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.
Hernando Morata, J. A.
Herrero, V.
Labarga, L.
Laing, A.
Lebrun, P.
Liubarsky, I.
López March, N.
Lorca, D.
Losada, M.
Martínez Lema, G.
Martínez, A.
Monrabal, F.
Monteiro, C. M.B.
Mora, F. J.
Moutinho, L. M.
Novella, P.
Nygren, D.
Palmeiro, B.
Para, A.
Querol, M.
Renner, J.
Ripoll Masferrer, Lluís
Rodríguez, J.
Santos, F. P.
Dos Santos, J. M.F.
Serra, L.
Shuman, D.
Simón, A.
Sofka, C.
Sorel, M.
Stiegler, T.
Toledo, J. F.
Torrent, J.
Tsamalaidze, Z.
Veloso, J. F.C.A.
Webb, R.
White, J. T.
Yahlali, N.
Yepes Ramírez, H.
Date: 2018 June 5
Abstract: NEXT-100 is an electroluminescent high-pressure xenon gas time projection chamber that will search for the neutrinoless double beta (0νββ) decay of 136Xe. The detector possesses two features of great value for 0νββ searches: energy resolution better than 1% FWHM at the Q value of 136Xe and track reconstruction for the discrimination of signal and background events. This combination results in excellent sensitivity, as discussed in this paper. Material-screening measurements and a detailed Monte Carlo detector simulation predict a background rate for NEXT-100 of at most 4 × 10−4 counts keV−1 kg−1 yr−1. Accordingly, the detector will reach a sensitivity to the 0νββ-decay half-life of 2.8 × 1025 years (90% CL) for an exposure of 100 kg·year, or 6.0 × 1025 years after a run of 3 effective years
Document access: http://hdl.handle.net/2072/319568
Language: eng
Publisher: Scuola Internazionale Superiore di Studi Avanzati (SISSA)
Rights: Attribution 4.0 Spain
Rights URI: http://creativecommons.org/licenses/by/4.0/es/
Subject: Matèria fosca (Astronomia)
Dark matter (Astronomy)
Desintegració beta
Beta Decay
Title: Sensitivity of NEXT-100 to neutrinoless double beta decay
Type: info:eu-repo/semantics/article
Repository: Recercat

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