https://doi.org/10.1140/epjc/s10052-025-14336-1
Regular Article - Theoretical Physics
Dark photon distortions of NO
A and T2K neutrino oscillations
1
Department of Physics, University of Toronto, M5S 1A7, Toronto, ON, Canada
2
McGill University Department of Physics & Trottier Space Institute, 3600 Rue University, H3A 2T8, QC, Montréal, Canada
3
CERN, Theoretical Physics Department, Geneva, Switzerland
4
IFIC - Instituto de Física Corpuscular (CSIC - Universitat de València), c/Catedrático José Beltrán, 2, 46980, Paterna, Valencia, Spain
a
benoit.laurent@mail.mcgill.ca
Received:
9
October
2024
Accepted:
21
May
2025
Published online:
10
June
2025
Dark photons coupling to 
lepton number difference are a highly studied light dark matter candidate, with potential to be discovered through their impact on terrestrial neutrino oscillation experiments. We re-examine this in the light of claimed tensions between the NOA and T2K long baseline experiments, also taking into account data from the MINOS experiment. We obtain leading limits on the gauge coupling 
versus dark photon mass 
, improving upon previous bounds by up to a factor of five. We find no statistically significant alleviation of the tension from inclusion of the new physics effect.
© The Author(s) 2025
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Funded by SCOAP3.
