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Aartsen, M. G. [Author]; Ackermann, M. [Author]; Anton, G. [Author]; Ganster, E. [Author]; Garrappa, S. [Author]; Gartner, A. [Author]; Gerhardt, L. [Author]; Gernhaeuser, R. [Author]; Ghorbani, K. [Author]; Glauch, T. [Author]; Glüsenkamp, T. [Author]; Goldschmidt, A. [Author]; Gonzalez, J. G. [Author]; Argüelles, C. [Author]; Grant, D. [Author]; Griffith, Z. [Author]; Griswold, S. [Author]; Günder, M. [Author]; Gündüz, M. [Author]; Haack, C. [Author]; Hallgren, A. [Author]; Halliday, R. [Author]; Halve, L. [Author]; Halzen, F. [Author]; [...]

Combined sensitivity to the neutrino mass ordering with JUNO, the IceCube Upgrade, and PINGU

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  • Media type: E-Article
  • Title: Combined sensitivity to the neutrino mass ordering with JUNO, the IceCube Upgrade, and PINGU
  • Contributor: Aartsen, M. G. [Author]; Ackermann, M. [Author]; Anton, G. [Author]; Ganster, E. [Author]; Garrappa, S. [Author]; Gartner, A. [Author]; Gerhardt, L. [Author]; Gernhaeuser, R. [Author]; Ghorbani, K. [Author]; Glauch, T. [Author]; Glüsenkamp, T. [Author]; Goldschmidt, A. [Author]; Gonzalez, J. G. [Author]; Argüelles, C. [Author]; Grant, D. [Author]; Griffith, Z. [Author]; Griswold, S. [Author]; Günder, M. [Author]; Gündüz, M. [Author]; Haack, C. [Author]; Hallgren, A. [Author]; Halliday, R. [Author]; Halve, L. [Author]; Halzen, F. [Author]; [...]
  • Published: Inst.812068, 2020
  • Published in: Physical review / D D 101(3), 032006 (2020). doi:10.1103/PhysRevD.101.032006
  • Language: English
  • DOI: https://doi.org/10.1103/PhysRevD.101.032006
  • ISSN: 1550-7998; 1550-2368; 2470-0029; 0556-2821; 1089-4918; 1538-4500; 2470-0010
  • Origination:
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  • Description: The ordering of the neutrino mass eigenstates is one of the fundamental open questions in neutrinophysics. While current-generation neutrino oscillation experiments are able to produce moderateindications on this ordering, upcoming experiments of the next generation aim to provide conclusiveevidence. In this paper we study the combined performance of the two future multi-purpose neutrinooscillation experiments JUNO and the IceCube Upgrade, which employ two very distinct andcomplementary routes toward the neutrino mass ordering. The approach pursued by the 20 ktmedium-baseline reactor neutrino experiment JUNO consists of a careful investigation of the energyspectrum of oscillated ν¯e produced by ten nuclear reactor cores. The IceCube Upgrade, on the other hand,which consists of seven additional densely instrumented strings deployed in the center of IceCubeDeepCore, will observe large numbers of atmospheric neutrinos that have undergone oscillations affectedby Earth matter. In a joint fit with both approaches, tension occurs between their preferred mass-squareddifferences Δm^2_{31}= m^2_3 - m^2_1 within the wrong mass ordering. In the case of JUNO and the IceCubeUpgrade, this allows to exclude the wrong ordering at > 5σ on a timescale of 3–7 years—even undercircumstances that are unfavorable to the experiments’ individual sensitivities. For PINGU, a 26-stringdetector array designed as a potential low-energy extension to IceCube, the inverted ordering could beexcluded within 1.5 years (3 years for the normal ordering) in a joint analysis.
  • Access State: Open Access