  In this work we consider a singlet scalar propagating in a flat large extra
dimension. The first Kaluza-Klein mode associated to this singlet scalar will
be a viable dark matter candidate. The tower of new particles enriches the
calculation of the relic density due effect of coannihilation. For large mass
splitting, the model converges to the predictions of the singlet dark matter
model. For nearly degenerate mass spectrum, coannihilations increase the cross
sections used for direct and indirect dark matter searches. We investigate the
impact of the Kaluza-Klein tower associated to singlet scalar for indirect and
direct detection of dark matter.
