7–14 mars 2009
La Thuile
Fuseau horaire Europe/Paris

Less-dimensions and the origin of Dark Matter

12 mars 2009, 09:10
20m
La Thuile

La Thuile

Rencontres de Moriond Planibel Hotel - La Thuile Aosta Valley 11016 La Thuile (Aosta), Italy Phone : 39 (0)1 65 88 45 41 Fax : 39 (0)1 65 88 45 35

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)

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