Constraining Non-Standard Interactions of the Neutrino with Borexino
  We use the Borexino 153.6 ton.year data to place constraints on non-standard neutrino-electron interactions, taking into account the uncertainty in the 7Be solar neutrino flux, and backgrounds due to 85Kr and 210Bi beta-decay. We find that the bounds are comparable to existing bounds from all other experiments. Further improvement can be expected in Phase II of Borexino due to the reduction in the 85Kr background. 
Sanjib Kumar Agarwalla, Francesco Lombardi, Tatsu Takeuchi
hep-ph hep-ex