Conveners
Parallel: Dark Matter 3
- Meshkat Rajaee (JBNU)
Presentation materials
Although searches for GeV-scale WIMPs are sensitive to very small cross sections, constraints on sub-GeV dark matter are significantly weaker, and largely constrain moderately- or strongly-interacting dark matter. But if dark matter interacts too strongly with nuclei, it could be slowed to undetectable speeds in Earth’s crust or atmosphere before reaching a detector. For sub-GeV dark matter,...
Sub-MeV cold dark matter (DM) particles are unable to produce electronic recoil in the XENONnT experiment above the detector threshold. The mechanism of boosted dark matter (BDM) scenario comes into picture to constrain the parameter space of such low mass dark matter from direct detection experiments. We consider the effect of the leading components of cosmic rays to boost the cold DM. To...
A novel mechanism of boosting dark matter by cosmic neutrinos is proposed. The new mechanism is so significant that the arriving flux of dark matter in the mass window from keV to GeV on Earth can be enhanced by two to four orders of magnitude compared to one only by cosmic electrons. Including both galactic and extragalactic origins of boosted dark matter upscattered by stellar neutrinos with...
We present a new reconstruction of the distribution of atomic hydrogen in the inner Galaxy based on explicit radiation-transport modelling of line and continuum emission and a gas-flow model in the barred Galaxy that provides distance resolution for lines of sight toward the Galactic Center. The main benefits of the new gas model are a) the ability to reproduce the negative line signals seen...
I present constraints on various dark matter models from the analysis of 14 years of Fermi data, including thermal higgsino dark matter. This scenario is well-motivated from supersymmetric extension of the Standard Model. We analyze Fermi data near the Galactic Center in search for continuum gamma-ray emission that may occur from the annihilation of higgsino DM through the W+W- and Z Z final...
