Sign of the day-night asymmetry for solar neutrinos
Journal
Physical Review D
Journal Volume
63
Journal Issue
5
Date Issued
2001
Author(s)
Wolfenstein, L.
Abstract
A qualitative understanding of the day-night asymmetry for solar neutrinos is provided. The greater night flux in ve is seen to be a consequence of the fact that the matter effect in the Sun and that in the Earth have the same sign. It is shown in the adiabatic approximation for the Sun and constant density for the Earth that, for all values of the mixing angle 6v between 0 and TT/2, the night flux of neutrinos is greater than the day flux. Only for small values of Ov where the adiabatic approximation badly fails does the sign of the day-night asymmetry reverse. ©2001 The American Physical Society.
Type
journal article