Speaker
Takumi Kuwahara
(Jilin University)
Description
We investigate the possibility of baryogenesis scenarios where the evaporation of the primordial black holes (PBHs) formed in the early universe can be sources of the matter-genesis in the universe. The PBHs evaporate before the Big-bang nucleosynthesis as their mass is below 10^9 g, and no PBH remains in the current universe. Even if the plasma temperature is well below the particle mass, such particles can be produced from the last stage of the evaporation. The matter-genesis through the heavy particle decay requires the presence of such heavy particles in the universe. In this work, we have demonstrated the possible GUT-like baryogenesis and cogenesis scenario for baryon and dark-matter asymmetries in the composite DM realization.
Primary authors
Takumi Kuwahara
(Jilin University)
Dr
Yoshiki Uchida
