Speaker
Prof.
Koji Tsumura
(Kyushu University)
Description
A pseudo-Nambu-Goldstone boson (pNGB) is a compelling candidate for
dark matter (DM), as it naturally evades the stringent constraints
from current DM direct detection experiments. In this framework, the
pNGB DM model can be embedded within an SO(10) grand unified theory,
where SO(10) is first broken to the Pati-Salam gauge group at the
unification scale and subsequently to the Standard Model gauge group
at an intermediate scale. Constraints from DM lifetime and gamma-ray
observations suggest that the pNGB DM mass must be below O(100) GeV.
We find that the thermal relic abundance remains consistent with all
constraints when the DM mass is close to half the mass of the CP-even
Higgs boson.
Reference: arXiv:2104.13523
Primary author
Prof.
Koji Tsumura
(Kyushu University)
