The 16th Particle Physics Phenomenology Workshop

Session

High Energy Astroparticle Physics

17 Jun 2026, 10:30

NTHU

10. The 20 GeV Fermi halo: evidence for dark matter annihilation?

Tomonori Totani (Dept. Astronomy, Univ. of Tokyo)

17/06/2026, 10:30

High Energy Astroparticle Physics

Invited Presentation

Fifteen years of the Fermi Large Area Telescope (LAT) data in the halo region of the Milky Way (MW) are analyzed to search for gamma rays from dark matter annihilation. Gamma-ray maps within the region of interest (|l| < 60 deg, 10 deg < |b| < 60 deg) are modeled using known components plus a halo-like component. A statistically significant halo-like excess is found with a spectral peak around...

4. Superheavy supersymmetric dark matter as the origin of the KM3NeT ultrahigh energy signal

Yongsoo Jho

17/06/2026, 11:15

High Energy Astroparticle Physics

Invited Presentation

We propose an explanation for the recently reported ultrahigh-energy neutrino signal at KM3NeT, which shows no clear association with known astrophysical sources. While decaying dark matter in the Galactic Center is a natural candidate, the observed arrival direction strongly suggests an extragalactic origin. We introduce a multicomponent dark matter scenario in which the components are part...