The University of Southampton

SHEP Friday Seminar - P. S. Bhupal Dev - A multi-messenger probe of the nature of neutrino mass - Event

3rd of February, 2023  @  15:00 - 16:15
Microsoft Teams

Event details

Whether neutrinos are Majorana or Dirac particles is an open question. Theoretically, it is also possible that neutrinos are pseudo-Dirac, which are fundamentally Majorana fermions, but essentially act like Dirac fermions in most experimental settings due to extremely small active-sterile mass splitting. However, they can be differentiated through active-sterile oscillations with an astrophysical baseline. In this talk, we will show that the recent identification of ultra-high energy neutrino sources by the IceCube Neutrino Observatory provides us with such an astrophysical baseline, thus improving the reach of terrestrial experiments by more than a billion for the mass-squared difference.

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