Double Bangs from New Physics in IceCube

Understand

A variety of new physics models allows for neutrinos to up-scatter into heavier states.

• If the incident neutrino is energetic enough, the heavy neutrino may travel some distance before decaying.
• In this work, we consider the atmospheric neutrino flux as a source of such events.
• At IceCube, this would lead to a "double-bang" (DB) event topology, similar to what is predicted to occur for tau neutrinos at ultra-high energies.