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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
20m
Virtual Seoul

Virtual Seoul

Poster BSM searches in neutrinos Poster

Speaker

Julia Book (Harvard University)

Description

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