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arXiv · 2305.03341

COHERENT production of a dark fermion

Pablo M. Candela·Valentina De Romeri·Dimitrios K. Papoulias
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Abstract

We consider the possible production of a new MeV-scale fermion at the COHERENT experiment. The new fermion, belonging to a dark sector, can be produced through the up-scattering process of neutrinos off the nuclei and the electrons of the detector material, via the exchange of a light vector or scalar mediator. We perform a detailed statistical analysis of the combined COHERENT CsI and LAr data sets and obtain up-to-date constraints on the couplings and masses of the dark fermion and mediators. We finally briefly comment about the stability of the dark fermion.

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Pablo M. Candela, Valentina De Romeri, Dimitrios K. Papoulias. 2023-05-05. COHERENT production of a dark fermion. https://doi.org/10.1103/physrevd.108.055001

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