Etudes des proprietes des neutrinos dans les contextes ...

tel-00450051, version 1 - 25 Jan 2010
Flux ratio
Flux ratio
1.1
1
0.9
0 10 20 30 40 50 60 70
Energy (MeV)
Figure 6.2: Ratios of the νe fluxes for a CP violating phase δ = 180 ◦ over δ = 0 ◦ as
a function of neutrino energy, at 1000 km within the star. The curves correspond
to the following cases : Hνν = 0 and Vµτ = 0 (dotted), Hνν = 0 and Vµτ = 0
(dashed) and Hνν = 0 and Vµτ = 0 (solid). These are obtained with Lνµ = Lντ
e.g. Tνµ = 1.05 Tντ. The case Hνν = 0 and Vµτ = 0 (dot-dashed) with Lνµ = Lντ
is also shown. The results correspond to an inverted hierarchy and a small θ13.
1.05
1
0.95
0 10 20 30 40 50
Energy (MeV)
Flux ratio
1.05
1
0.95
0 25 50 75 100 125
Energy (MeV)
Figure 6.3: Ratios of the νe fluxes for a CP violating phase δ = 180 ◦ over δ = 0 ◦
as a function of neutrino energy. They correspond to inverted hierarchy and small
θ13 and different distances from the neutron star surface, i.e. 200 km (dotted),
500 km (dashed), 750 (dot-dashed), 1000 (solid). The results include the ν-ν
interaction and the Vµτ refractive index. They are obtained using equal νµ and
ντ fluxes at the neutrinosphere (left) or taking Tνµ = 1.05 Tντ (right). For the ¯νe
fluxes deviations up to 10% are found at energies lower than 10 MeV.
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