期刊
JOURNAL OF HIGH ENERGY PHYSICS
卷 -, 期 1, 页码 -出版社
SPRINGER
DOI: 10.1007/JHEP01(2022)048
关键词
Beyond Standard Model; Neutrino Physics
资金
- German Research Foundation (DFG)
- European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme [637506]
- Swiss National Foundation [200020_188464, IZSAZ2_173357]
- Swiss National Science Foundation (SNF) [200020_188464, IZSAZ2_173357] Funding Source: Swiss National Science Foundation (SNF)
Next generation neutrino oscillation experiments like DUNE and T2HK have a rich physics program beyond oscillation measurements. The near detector facilities, especially the DUNE-PRISM design, play a special role in searching for weakly coupled dark sector particles. Moving some near detectors away from the beam axis improves the signal-to-background ratio, leading to a significant boost in sensitivity for dark matter particles interacting mainly with hadrons. Searches for heavy neutral leptons perform equally well in both configurations.
Next generation neutrino oscillation experiments like DUNE and T2HK are multi-purpose observatories, with a rich physics program beyond oscillation measurements. A special role is played by their near detector facilities, which are particularly well-suited to search for weakly coupled dark sector particles produced in the primary target. In this paper, we demonstrate this by estimating the sensitivity of the DUNE near detectors to the scattering of sub-GeV DM particles and to the decay of sub-GeV sterile neutrinos (heavy neutral leptons). We discuss in particular the importance of the DUNE-PRISM design, which allows some of the near detectors to be moved away from the beam axis. At such off-axis locations, the signal-to-background ratio improves for many new physics searches. We find that this leads to a dramatic boost in the sensitivity to boosted DM particles interacting mainly with hadrons, while for boosted DM interacting with leptons, data taken on-axis leads to marginally stronger exclusion limits. Searches for heavy neutral leptons perform equally well in both configurations.
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