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Energy calibration of the NEXT-White detector with 1% resolution near Q ββ of 136Xe

  • Author(s): Renner, J;
  • Díaz López, G;
  • Ferrario, P;
  • Hernando Morata, JA;
  • Kekic, M;
  • Martínez-Lema, G;
  • Monrabal, F;
  • Gómez-Cadenas, JJ;
  • Adams, C;
  • Álvarez, V;
  • Arazi, L;
  • Arnquist, IJ;
  • Azevedo, CDR;
  • Bailey, K;
  • Ballester, F;
  • Benlloch-Rodríguez, JM;
  • Borges, FIGM;
  • Byrnes, N;
  • Cárcel, S;
  • Carrión, JV;
  • Cebrián, S;
  • Church, E;
  • Conde, CAN;
  • Contreras, T;
  • Díaz, J;
  • Diesburg, M;
  • Escada, J;
  • Esteve, R;
  • Felkai, R;
  • Fernandes, AFM;
  • Fernandes, LMP;
  • Ferreira, AL;
  • Freitas, EDC;
  • Generowicz, J;
  • Ghosh, S;
  • Goldschmidt, A;
  • González-Díaz, D;
  • Guenette, R;
  • Gutiérrez, RM;
  • Haefner, J;
  • Hafidi, K;
  • Hauptman, J;
  • Henriques, CAO;
  • Herrero, P;
  • Herrero, V;
  • Ifergan, Y;
  • Johnston, S;
  • Jones, BJP;
  • Labarga, L;
  • Laing, A;
  • Lebrun, P;
  • López-March, N;
  • Losada, M;
  • Mano, RDP;
  • Martín-Albo, J;
  • Martínez, A;
  • McDonald, AD;
  • Monteiro, CMB;
  • Mora, FJ;
  • Muñoz Vidal, J;
  • Novella, P;
  • Nygren, DR;
  • Palmeiro, B;
  • Para, A;
  • Pérez, J;
  • Psihas, F;
  • Querol, M;
  • Repond, J;
  • Riordan, S;
  • Ripoll, L;
  • Rodríguez García, Y;
  • Rodríguez, J;
  • Rogers, L;
  • Romeo, B;
  • Romo-Luque, C;
  • Santos, FP;
  • dos Santos, JMF;
  • Simón, A;
  • Sofka, C;
  • Sorel, M;
  • Stiegler, T;
  • Toledo, JF;
  • Torrent, J;
  • Usón, A;
  • Veloso, JFCA;
  • Webb, R;
  • Weiss-Babai, R;
  • White, JT;
  • Woodruff, K;
  • Yahlali, N
  • et al.
Abstract

Excellent energy resolution is one of the primary advantages of electroluminescent high-pressure xenon TPCs. These detectors are promising tools in searching for rare physics events, such as neutrinoless double-beta decay (ββ0ν), which require precise energy measurements. Using the NEXT-White detector, developed by the NEXT (Neutrino Experiment with a Xenon TPC) collaboration, we show for the first time that an energy resolution of 1% FWHM can be achieved at 2.6 MeV, establishing the present technology as the one with the best energy resolution of all xenon detectors for ββ0ν searches. [Figure not available: see fulltext.]

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