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T: Fachverband Teilchenphysik
T 51: BSM physics (theory)
T 51.9: Vortrag
Mittwoch, 17. März 2021, 18:00–18:15, Ta
Probing radiative seesaw models with neutrinos from the sun at IceCube — •Thede de Boer1, Sybrand Zeinstra1, Raffaela Busse2, Michael Klasen1, and Alexander Kappes2 — 1Institut für Theoretische Physik, WWU Münster — 2Institut für Kernphysik, WWU Münster
Dark matter scattering off of nuclei in the sun and subsequent DM self-annihilations can lead to an enhanced neutrino flux which is in principle detectable at IceCube. We study possible event rates considering a radiative seesaw model containing scalar triplet and singlet-doublet fermion dark matter candidates. In the case of scalar dark matter, the absence of a spin dependent scattering on nuclei results in a low capture rate in the Sun, which is reflected in an event rate of less than one event per year. For singlet-doublet fermion dark matter there exists a spin dependent scattering process next to the spin independent one, allowing for higher event rates. Due to a correlation between both processes, the stringent limits on the spin dependent cross section set by XENON1T exclude most points detectable at IceCube.