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Neutrino Portals, Terrestrial Upscattering, and Atmospheric Neutrinos

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arxiv 2205.02234 v2 pith:NHBYKIEA submitted 2022-05-04 hep-ph astro-ph.HEhep-ex

classification hep-phastro-ph.HEhep-ex
keywords atmosphericneutrinosdecaydunefuturehnlsmassesneutrino
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

We consider the upscattering of atmospheric neutrinos in the interior of the Earth producing heavy neutral leptons (HNLs) which subsequently decay inside large volume detectors (e.g. Super-Kamiokande or DUNE). We compute the flux of upscattered HNLs arriving at a detector, and the resultant event rate of visible decay products. Using Super-Kamiokande's atmospheric neutrino dataset we find new leading constraints for dipole couplings to any flavor with HNL masses between roughly 10 MeV and 100 MeV. For mass mixing with tau neutrinos, we probe new parameter space near HNL masses of $\sim 20$ MeV with prospects for substantial future improvements. We also discuss prospects at future experiments such as DUNE, JUNO, and Hyper-Kamiokande.

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Forward citations

Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Dirt/Detector/Dump: Complementary BSM production at Short-Baseline Neutrino Facilities

    hep-ph 2025-01 conditional novelty 6.0 of 10

    Dump-produced heavy neutral leptons contribute substantially to short-baseline neutrino detector signals and can be separated from dirt and detector production by energy, angle, and timing.

  2. Probing conventional and new physics at the ESS with coherent elastic neutrino-nucleus scattering

    hep-ph 2025-01 conditional novelty 5.0 of 10

    Projected ESS CEνNS measurements would improve current constraints on the weak mixing angle, nuclear neutron radii, and several new physics scenarios by large factors, and would lead in some unexplored mass ranges.

  3. The Forward Neutrino Flux and its Secondaries at a 10 TeV Muon Collider

    hep-ph 2026-08

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