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arXiv · 2605.10689

The X17 Existence Hinted at by Nuclear Reactor Neutrinos

Johan Rathsman·Joakim Cederkäll·Yasar Hicyilmaz·Else Lytken·Stefano Moretti
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Abstract

We show that by exploiting the process of Coherent Elastic neutrino (v) Nucleus Scattering (CEvNS), neutrino measurements by nuclear reactor experiments appear to corroborate the evidence of the so-called X17 particle, which has been invoked to explain the ATOMKI anomaly. We base our analysis primarily on CONUS+ and Dresden-II data, which, when combined with CEvNS data from COHERENT and neutrino oscillation data from IceCube, single out a unique region of couplings to neutrinos and nuclei.

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Johan Rathsman, Joakim Cederkäll, Yasar Hicyilmaz, Else Lytken, Stefano Moretti. 2026-05-11. The X17 Existence Hinted at by Nuclear Reactor Neutrinos. https://arxiv.org/abs/2605.10689

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