Reception of Modulated Neutrino Day-Night Effect Signal by Neutrino Detectors

Lomonosov Moscow State University, Faculty of Physics, 1/2 Leninskie Gory, 119991 Moscow, Russia

^* e-mail: kharlanov@physics.msu.ru

Published online: 4 February 2019

Abstract

The regeneration effect of solar neutrinos in the Earth leading to the so-called day-night effect strongly depends on the neutrino energy, the time of day, and the season. Classical neutrino experiments, such as Super-Kamiokande, typically observe this effect cumulatively, i.e., virtually integrate it over the year. We discuss various day-night effects that could become potentially observable if time-weighted data processing is applied to neutrino events. The procedure is similar to reception of radio-frequency modulated signals and ‘demodulation’ of the neutrino signal, for example, is able to reveal interesting signatures in the high-energy tail of the electron recoil energy spectrum