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30 May 2022 to 4 June 2022
Virtual Seoul
Asia/Seoul timezone

Icecube-DeepCore Sensitivity to Heavy Neutral Leptons

Not scheduled
Virtual Seoul

Virtual Seoul

Poster BSM searches in neutrinos Poster


Julia Book (Harvard University)


Sterile neutrinos have been proposed as resolutions to a variety of open questions in physics, such as neutrino oscillation anomalies, the nature of dark matter, and origins of neutrino masses. A variety of models posit the existence a Heavy Neutral Lepton (HNL), a GeV-scale, sterile neutrino which can decay to well-understood Standard Model particles. HNL production from tau neutrinos and the HNL's subsequent decay would produce a unique double-bang signature in the IceCube detector, enabling a novel search for GeV-scale HNLs at atmospheric neutrino energies.
Event reconstruction of these double-bangs is adapted from the high-energy astrophysical tau neutrino reconstruction, to address the difficulty of reconstructing low-light events more common at these lower energies.
This poster presents a first estimate of the IceCube DeepCore sensitivity to this signature, outlining an event-selection scheme which takes advantage of the characteristic topology of the HNL production-decay events in combination with ML and traditional methods.

Collaboration IceCube

Primary authors

Julia Book (Harvard University) Leander Fischer (DESY Zeuthen)

Presentation Materials