Borexino and General Neutrino Interactions

Understand

We derive constraints on all possible general neutrino-electron interactions (scalar, vector, pseudoscalar, axialvector and tensor) using the recent real time Borexino event rate measurements of $pp$, $pep$ and $^{7}Be$ solar neutrinos.

• The limits improve several previous ones from TEXONO and CHARM-II for incoming electron and muon neutrinos, and are the first ones for the tau flavor.
• Future improvements by next-generation solar neutrino experiments are also studied.
• The limits extend the physics reach of solar neutrino measurements to TeV-scale physics.