Journal of High Energy Physics (Aug 2021)

Sensitivity of a tonne-scale NEXT detector for neutrinoless double-beta decay searches

  • The NEXT collaboration,
  • C. Adams,
  • V. Álvarez,
  • L. Arazi,
  • I. J. Arnquist,
  • C. D. R Azevedo,
  • K. Bailey,
  • F. Ballester,
  • J. M. Benlloch-Rodríguez,
  • F. I. G. M. Borges,
  • N. Byrnes,
  • S. Cárcel,
  • J. V. Carrión,
  • S. Cebrián,
  • E. Church,
  • C. A. N. Conde,
  • T. Contreras,
  • A. A. Denisenko,
  • G. Díaz,
  • J. Díaz,
  • J. Escada,
  • R. Esteve,
  • R. Felkai,
  • L. M. P. Fernandes,
  • P. Ferrario,
  • A. L. Ferreira,
  • F. Foss,
  • E. D. C. Freitas,
  • Z. Freixa,
  • J. Generowicz,
  • A. Goldschmidt,
  • J. J. Gómez-Cadenas,
  • R. González,
  • D. González-Díaz,
  • S. Gosh,
  • R. Guenette,
  • R. M. Gutiérrez,
  • J. Haefner,
  • K. Hafidi,
  • J. Hauptman,
  • C. A. O. Henriques,
  • J. A. Hernando Morata,
  • P. Herrero,
  • V. Herrero,
  • J. Ho,
  • Y. Ifergan,
  • B. J. P. Jones,
  • M. Kekic,
  • L. Labarga,
  • A. Laing,
  • P. Lebrun,
  • N. López-March,
  • M. Losada,
  • R. D. P. Mano,
  • J. Martín-Albo,
  • A. Martínez,
  • M. Martínez-Vara,
  • G. Martínez-Lema,
  • A. D. McDonald,
  • Z. E. Meziani,
  • F. Monrabal,
  • C. M. B. Monteiro,
  • F. J. Mora,
  • J. Muñoz Vidal,
  • C. Newhouse,
  • P. Novella,
  • D. R. Nygren,
  • E. Oblak,
  • B. Palmeiro,
  • A. Para,
  • J. Pérez,
  • M. Querol,
  • A. Redwine,
  • J. Renner,
  • L. Ripoll,
  • I. Rivilla,
  • Y. Rodríguez García,
  • J. Rodríguez,
  • C. Rogero,
  • L. Rogers,
  • B. Romeo,
  • C. Romo-Luque,
  • F. P. Santos,
  • J. M. F. dos Santos,
  • A. Simón,
  • M. Sorel,
  • C. Stanford,
  • J. M. R. Teixeira,
  • P. Thapa,
  • J. F. Toledo,
  • J. Torrent,
  • A. Usón,
  • J. F. C. A. Veloso,
  • T. T. Vuong,
  • R. Webb,
  • R. Weiss-Babai,
  • J. T. White,
  • K. Woodruff,
  • N. Yahlali

DOI
https://doi.org/10.1007/JHEP08(2021)164
Journal volume & issue
Vol. 2021, no. 8
pp. 1 – 24

Abstract

Read online

Abstract The Neutrino Experiment with a Xenon TPC (NEXT) searches for the neutrinoless double-beta (0νββ) decay of 136Xe using high-pressure xenon gas TPCs with electroluminescent amplification. A scaled-up version of this technology with about 1 tonne of enriched xenon could reach in less than 5 years of operation a sensitivity to the half-life of 0νββ decay better than 1027 years, improving the current limits by at least one order of magnitude. This prediction is based on a well-understood background model dominated by radiogenic sources. The detector concept presented here represents a first step on a compelling path towards sensitivity to the parameter space defined by the inverted ordering of neutrino masses, and beyond.

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