10-17 July 2019
Europe/Brussels timezone

Probing pseudo-Dirac mass splittings by observing the high-energy astrophysical neutrinos from blazars

12 Jul 2019, 09:20
Campus Ledeganck - Aud. 2 (Ghent)

Campus Ledeganck - Aud. 2


Parallel talk Cosmology Cosmology


Dr tsugche Liu (LeCosPA, national taiwan university)


Pseudo-Dirac neutrinos are pairs of maximally-mixed Majorana neutrinos with tiny mass difference between the active and the sterile states in each pair. Their oscillation phenomenology is different from that of active neutrinos. Assuming blazars to be the source of astrophysical neutrinos, we construct all-sky maps of neutrino flavor compositions resulting from oscillations of pseudo-Dirac neutrinos originated from different redshifts. Using terrestrial measurements of neutrino flavor composition and the redshift distributions of blazars, we can constrain the mass splittings of pseudo-Dirac neutrinos.

Primary authors

Dr tsugche Liu (LeCosPA, national taiwan university) Prof. GUEY-LIN Lin (Institute of Physics, National Chiao-Tung University) Prof. KWANG-CHANG LAI (Physics Group, Center for General Education, Chang Gung University)

Presentation Materials