Orateur
Dr
Martti Raidal
(NICPB)
Description
The origin and the nature of Dark Matter cannot be addressed in the context of Standard Model.
If the topology of the Universe is based on 2 flat +1 compact space dimension,
constraints on the number of particles and on their quantum numbers occur
from the requirement of gauge invariance in the 3-dimensional subspace. This scenario,
called less-dimensions, suggests the GUT group of particle physics to be $SO(10)$ with the
breaking pattern $SO(10)\to SU(5)\times U(1),$ where only $SU(5)$ is gauged.
Interpreting the remaining $U(1)$ as the source of a discrete symmetry of Nature, the covering
$SO(10)$ determines all matter fields either odd or even under the discrete symmetry.
The minimal model based on $Z_2$ predicts only two possible Dark Matter candidates at low energy,
the inert scalar doublet $H_2$ and the scalar singlet $S.$ We work out Dark Matter phenomenology of
that model and analyze PAMELA, ATIC and future FERMI data implications on it.
At LHC, the SM Higgs sector is the portal to the Dark Matter world.
Auteur principal
Dr
Martti Raidal
(NICPB)
