FIG. 2: Plot of ratio Q ν ¯ ν ( φ,β ) Q ν ¯ ν ( β ) , as a function of mixing angle φ for β = 0 , 5 , 12. FIG. 1: The emissivity for e $^{+}$e − → ν ¯ ν as a function of degeneration parameter β for φ = − 0 . 0016 , 0 , 0 . 0011. 13