https://doi.org/10.1140/epjc/s10052-022-10131-4
Regular Article - Theoretical Physics
Probing light mediators in the radiative emission of neutrino pair
1
Tsung-Dao Lee Institute and School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai, China
2
Key Laboratory for Particle Astrophysics and Cosmology (MOE) and Shanghai Key Laboratory for Particle Physics and Cosmology, Shanghai Jiao Tong University, 200240, Shanghai, China
Received:
4
December
2021
Accepted:
11
February
2022
Published online:
9
March
2022
We propose a new possibility of using the coherently enhanced neutrino pair emission to probe light-mediator interactions between electron and neutrinos. With typical momentum transfer at the atomic 
eV) scale, this process is extremely sensitive for the mediator mass range 
) eV. The sensitivity on the product of couplings with electron (
or 
) and neutrinos (
or 
) can touch down to 
for a scalar mediator and 
for a vector one, with orders of improvement from the existing constraints.
© The Author(s) 2022
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