Conveners
Session 1
- Seong Chan Park (Yonsei University)
We consider a new mechanism for enhancing the self-scattering of dark matter without a light mediator or a sub-GeV dark matter. The mechanism relies on the u-channel resonance from a dark matter particle in models with at least two components of dark matter with self-couplings. We develop the Bethe-Salpeter formalism for obtaining the non-perturbative cross section and the Sommerfeld...
Primordial Black Holes (PBH) in the intermediate mass range can be seeds for supermassive black holes and recent LIGO detections of black hole mergers in the mass gap suggest PBH progenitors. I present a novel constraint on the PBH mass fraction spanning PBH masses of 10-10^7 solar masses from thermal equilibrium considerations. A population of PBH in the central region of the dwarf galaxy Leo...
we present a novel mechanism for Sommerfeld effect for dark matter interactions without light mediator. Considering two component dark model with triple interaction, we find one of dark matter leads to an u-channel resonance in dark matter elastic scattering.
We propose a new mechanism to communicate between fermion dark matter and the SM only through the four-form flux. The four-form couplings are responsible for the relaxation of the Higgs mass to the correct value and the initial displacement of the reheating pseudo-scalar field from the minimum. We show that the simultaneous presence of the pseudo-scalar coupling to fermion DM and the...
We explore the impact of neutral-current non-standard neutrino interactions (NSI) on the propagation of atmospheric neutrinos using the future experiments, DUNE and HK as well as the future planned KNO and ORCA neutrino detectors. We study the potential of these experiments to constrain the matter NSI parameters assuming ten years of data taking of atmospheric neutrinos and find the...
