A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Combined sensitivity to the neutrino mass ordering with JUNO, the IceCube Upgrade, and PINGU (2020)
IceCube-Gen2 Collaboration, JUNO Collaboration. (2020). Combined sensitivity to the neutrino mass ordering with JUNO, the IceCube Upgrade, and PINGU. Physical Review D, 101(3), Article 032006. https://doi.org/10.1103/PhysRevD.101.032006
JYU-tekijät tai -toimittajat
Julkaisun tiedot
Julkaisun kaikki tekijät tai toimittajat: IceCube-Gen2 Collaboration; JUNO Collaboration
Lehti tai sarja: Physical Review D
ISSN: 2470-0010
eISSN: 2470-0029
Julkaisuvuosi: 2020
Volyymi: 101
Lehden numero: 3
Artikkelinumero: 032006
Kustantaja: American Physical Society
Julkaisumaa: Yhdysvallat (USA)
Julkaisun kieli: englanti
DOI: https://doi.org/10.1103/PhysRevD.101.032006
Julkaisun avoin saatavuus: Avoimesti saatavilla
Julkaisukanavan avoin saatavuus: Osittain avoin julkaisukanava
Julkaisu on rinnakkaistallennettu (JYX): https://jyx.jyu.fi/handle/123456789/68286
Julkaisu on rinnakkaistallennettu: https://publikationen.bibliothek.kit.edu/1000106012
Rinnakkaistallenteen verkko-osoite (pre-print): https://arxiv.org/abs/1911.06745
Tiivistelmä
The ordering of the neutrino mass eigenstates is one of the fundamental open questions in neutrino physics. While current-generation neutrino oscillation experiments are able to produce moderate indications on this ordering, upcoming experiments of the next generation aim to provide conclusive evidence. In this paper we study the combined performance of the two future multi-purpose neutrino oscillation experiments JUNO and the IceCube Upgrade, which employ two very distinct and complementary routes toward the neutrino mass ordering. The approach pursued by the 20 kt medium-baseline reactor neutrino experiment JUNO consists of a careful investigation of the energy spectrum of oscillated (nu) over bar (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 IceCube DeepCore, will observe large numbers of atmospheric neutrinos that have undergone oscillations affected by Earth matter. In a joint fit with both approaches, tension occurs between their preferred mass-squared differences Delta m(31)(2) = m(3)(2) - m(1)(2) in within the wrong mass ordering. In the case of JUNO and the IceCube Upgrade, this allows to exclude the wrong ordering at > 5 sigma on a timescale of 3-7 years-even under circumstances that are unfavorable to the experiments individual sensitivities. For PINGU, a 26-string detector array designed as a potential low-energy extension to IceCube, the inverted ordering could be excluded within 1.5 years (3 years for the normal ordering) in a joint analysis.
YSO-asiasanat: hiukkasfysiikka; neutriinot; massa (fysiikka)
Liittyvät organisaatiot
OKM-raportointi: Kyllä
Raportointivuosi: 2020
JUFO-taso: 2
