PPC 2023: XVI International Conference on Interactions between Particle Physics and Cosmology

Session

Parallel: Dark Matter 3

13 Jun 2023, 14:00

Auditorium (IBS Science and Culture Center)

Conveners

Parallel: Dark Matter 3

• Meshkat Rajaee (JBNU)

158. Boosted dark matter searches with Super-Kamiokande

Nadège Iovine (IBS - CUP)

13/06/2023, 14:00

22. An Analytic Approach to Light Dark Matter Propagation

Christopher Cappiello (Queen's University)

13/06/2023, 14:20

Dark Matter Physics

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,...

99. Constraints on cosmic-ray boosted dark matter from the XENONnT experiment

Atanu Guha (Chungnam National University)

13/06/2023, 14:40

Dark Matter Physics

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...

106. Upscattering of light dark matter by stellar neutrinos and cosmic rays

Yongsoo Jho (Weizmann Institute of Science)

13/06/2023, 15:00

Dark Matter Physics

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...

37. Assessing the Impact of Hydrogen Absorption on the Characteristics of the Galactic Center Excess

Chris Gordon (University of Canterbury (NZ))

13/06/2023, 15:20

Dark Matter Physics

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...

159. Dark matter constraints from 14 years of Fermi data

Ms Yujin Park (University of California, Berkeley)

13/06/2023, 15:40

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...

114. Cored Dark Matter halos in the Cosmic Neutrino Background

Wonsub Cho (SungKyunKwan University)

We study the impact of the interaction between DM and the cosmic neutrino background on the evolution of galactic dark matter halos. The energy transfer from the neutrinos to the dark matter can heat the center of the galaxy and make it cored. This effect is efficient for the small galaxies such as the satellite galaxies of the Milky Way and we can put conservative constraint on the...