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In this work we consider a singlet scalar propagating in a flat large extradimension. The first Kaluza-Klein mode associated to this singlet scalar willbe a viable dark matter candidate. The tower of new particles enriches thecalculation of the relic density due effect of coannihilation. For large masssplitting, the model converges to the predictions of the singlet dark mattermodel. For nearly degenerate mass spectrum, coannihilations increase the crosssections used for direct and indirect dark matter searches. We investigate theimpact of the Kaluza-Klein tower associated to singlet scalar for indirect anddirect detection of dark matter.

Scalar dark matter in an extra dimension inspired model