Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2009-03-16
Phys.Rev.D81:015002,2010
Physics
High Energy Physics
High Energy Physics - Phenomenology
The origin of scalar DM is emphasized, version accepted by PRD
Scientific paper
10.1103/PhysRevD.81.015002
We extend the concept of matter parity $P_M=(-1)^{3(B-L)}$ to non-supersymmetric theories and argue that $P_M$ is the natural explanation to the existence of Dark Matter of the Universe. We show that the non-supersymmetric Dark Matter must be contained in scalar 16 representation(s) of $SO(10),$ thus the unique low energy Dark Matter candidates are $P_M$-odd complex scalar singlet(s) $S$ and inert scalar doublet(s) $H_2.$ We have calculated the thermal relic Dark Matter abundance of the model and shown that its minimal form may be testable at LHC via the SM Higgs boson decays $H_1\to DM DM.$ The PAMELA anomaly can be explained with the decays $DM\to \nu l W$ induced via seesaw-like operator which is additionally suppressed by Planck scale. Because the SM fermions are odd under matter parity too, the DM sector is just our scalar relative.
Kadastik Mario
Kannike Kristjan
Raidal Martti
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