期刊
PHYSICAL REVIEW D
卷 101, 期 3, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.101.032006
关键词
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资金
- USA-U.S. National Science Foundation-Office of Polar Programs, U.S. National Science Foundation-Physics Division, Wisconsin Alumni Research Foundation
- Center for High Throughput Computing (CHTC) at the University of Wisconsin-Madison
- Extreme Science and Engineering Discovery Environment (XSEDE), U.S. Department of EnergyNational Energy Research Scientific Computing Center
- Astroparticle physics computational facility at Marquette University
- FWO Odysseus and Big Science programmes
- Belgian Federal Science Policy Office (Belspo)
- Germany-Bundesministerium fur Bildung und Forschung (BMBF)
- Deutsche Forschungsgemeinschaft (DFG)
- Helmholtz Alliance for Astroparticle Physics (HAP), Initiative and Networking Fund of the Helmholtz Association
- Sweden-Swedish Research Council
- Swedish Polar Research Secretariat
- Knut and Alice Wallenberg Foundation
- Australia-Australian Research Council
- Compute Canada
- Denmark-Villum Fonden
- Danish National Research Foundation (DNRF)
- Carlsberg Foundation
- New Zealand-Marsden Fund
- JapanJapan Society for Promotion of Science (JSPS)
- Korea-National Research Foundation of Korea (NRF)
- Switzerland-Swiss National Science Foundation (SNSF)
- Cluster of Excellence Precision Physics, Fundamental Interactions, and Structure of Matter [PRISMA+ EXC 2118/1]
- German Research Foundation (DFG) within the German Excellence Strategy [39083149]
- STFC [ST/P000770/1] Funding Source: UKRI
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.
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