Conveners
Parallel Session: [P1-A]
- Takaaki Nomura (Korea Institute for Advanced Study)
- Wanil Park (Chonbuk (Jeonbuk) National University)
We considered the effects of the linear non-minimal coupling for a singlet inflaton unitarizing the Higgs inflation. The inflaton field called sigma field can couple to the Standard Model through the trace of the energy-momentum tensor. Thus, regarding the sigma field as a decaying dark matter, we considered the non-thermal production mechanisms for dark matter from the decays of Higgs and...
We study the phenomenological consequences of the supersymmetric (SUSY) E7/SU(5)× U(1)3 non-linear sigma model, where the squarks and sleptons are Nambu Goldstone (NG) bosons. This SUSY coset space accommodates just three families of the quark and lepton chiral multiplets as (pseudo) NG multiplets, explaining the origin of the families. The model coupled to the supergravity predicts a chiral...
This talk introduces a regime of semi-annihilating DM that accommodates the self-heating period between the kinetic decoupling and freeze-out of DM self-interaction. During the self-heating, the DM temperature redshifts like radiation even though the DM particles are non-relativistic. The novel aspect of self-heating DM is that warmness and self-interaction of DM are interrelated: stronger...
We study the monopole dark matter (MDM) emerging from a spontaneous breakdown of non-abelian gauge symmetry in the hidden sector. We assume that this hidden MDM was produced as a topological defect during a second-order phase transition in the early universe, and its stability is guaranteed by the topological nature. In particular, we introduce an axion-like particle (ALP), which mediates the...
A long standing problem in kinematics at the hadron colliders is to determine the mass of invisible particles. This issue is particularly important for the signals of dark matter, which becomes one of the prominent targets of future collider experiments. In this paper, we show that the additional information from the precise timing measurement, which will be available at the planned...
Right-handed neutrinos are particles beyond the SM introduced in the seesaw mechanism that can explain tiny neutrino masses. We revisit the entropy production from the decay of right-handed neutrinos with the GeV scale masses. This additional production of entropy dilutes the DM and baryon abundances. Furthermore, we estimate the effect on the primordial gravitational wave spectrum. Primordial...
Asymmetric Dark Matter(ADM) is a regime which can naturally solve the coincidence problem. In this talk, we discuss a QCD-like composite ADM model. We also derive constraints on this model from CMB and direct detection experiment, and show that this model is detectable in future direct detection experiments.
