Collective neutrinos oscillation in matter and CP-violation

Details Collective neutrinos oscillation in matter and CP-violation Collective neutrinos oscillation in matter and CP-violation

2008-07-22

arxiv.org/abs/0807.3418v2

Phys.Rev.D78:083007,2008

Astronomy and Astrophysics

Astrophysics

8 pages and 9 figures

Scientific paper

10.1103/PhysRevD.78.083007

We explore CP violation effects on the neutrino propagation in dense environments, such as in core-collapse supernovae, where the neutrino self-interaction induces non-linear evolution equations. We demonstrate that the electron (anti)neutrino fluxes are not sensitive to the CP violating phase if the muon and tau neutrinos interact similarly with matter. On the other hand, we numerically show that new features arise, because of the non-linearity and the flux dependence of the evolution equations, when the muon and tau neutrinos have different fluxes at the neutrinosphere (due to loop corrections or of physics beyond the Standard Model). In particular, the electron (anti)neutrino probabilities and fluxes depend upon the CP violating phase. We also discuss the CP effects induced by radiative corrections to the neutrino refractive index.

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