Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2005-10-13
JCAP 0606 (2006) 014
Physics
High Energy Physics
High Energy Physics - Phenomenology
25 pages, 9 figures, LaTeX. Final version published in JCAP
Scientific paper
10.1088/1475-7516/2006/06/014
We consider Kaluza-Klein dark matter from latticized universal dimensions. We motivate and investigate two different lattice models, where the models differ in the choice of boundary conditions. The models reproduce relevant features of the continuum model for Kaluza-Klein dark matter. For the model with simple boundary conditions, this is the case even for a model with only a few lattice sites. We study the effects of the latticization on the differential flux of positrons from Kaluza-Klein dark matter annihilation in the galactic halo. We find that for different choices of the compactification radius, the differential positron flux rapidly converges to the continuum model results as a function of the number of lattice sites. In addition, we consider the prospects for upcoming space-based experiments such as PAMELA and AMS-02 to probe the latticization effect.
Hallgren Tomas
Ohlsson Tommy
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