Workshop on Physics of Dark Cosmos: dark matter, dark energy, and all

Session

Student Session

21 Oct 2022, 20:00

Lavalse Hotel Busan 2F

Conveners

Student Session: 1

• Youngjoon Kwon ()

Contribution list Timetable

39. Constraining ALPs from PBH with time-varying decay process

Tae Geun Kim

21/10/2022, 20:00

Axion-like particles (ALPs) are one of the well-known particles beyond the standard model, so understanding its properties and interactions with standard model particles is important. In this study, we constrain the mass ($m_a$) and the photon coupling constant ($g_{a\gamma\gamma}$) of ALPs through light particle emission from primordial black holes (PBHs). To achieve this, we focus on the...

40. Sterile Neutrino Dark Matter with PTOLEMY-like Experiment

Erdenebulgan Lkhagvadorj

21/10/2022, 20:15

We study the detection prospect of the cosmic background of sterile neutrinos in PTOLEMY-like experiments. The sterile neutrino with mass ranges between sub-eV - 10 keV may contribute to the local number density of dark matter candidates. While, in the literature, 100% of the sterile neutrino dark matter was assumed, however we assume that sterile neutrino could be sub-component of dark...

41. Unifying flavor and Dark Matter puzzles with SU(2)D lepton portals

Adriana Guerrero Menkara

21/10/2022, 20:30

We propose a novel model for lepton flavor and dark matter based on an SU(2)D gauge symmetry and vector-like leptons in their fundamental representations. We introduce a dark SU(2)D Higgs doublet and a Higgs bi-doublet for the mass mixing between the vector-like lepton and the lepton, leading to small seesaw lepton masses. The SU(2)D gauge bosons and the vector-like lepton contribute to the...

42. Models for Self-resonant Dark Matter

Seongsik Kim

21/10/2022, 20:45

We consider a new mechanism for enhancing the self-scattering and annihilation cross sections for dark matter with multiple components but without a light mediator. The lighter dark matter component plays a role of the u-channel pole in the elastic co- scattering for dark matter, leading to a large self-scattering cross section and a Som- merfeld enhancement for semi-annihilation processes....