2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/192859In this letter we study the process of gluon fusion into a pair of Higgs bosons in a model with one universal extra dimension. We find that the contributions from the extra top quark Kaluza-Klein excitations lead to a Higgs pair production cross section at the LHC that can be significantly altered compared to the Standard Model value for small values of the compactification scale.10 pages, 6 figures. LHC cross section computed, 2 new figuresHigh Energy Physics - Phenomenologytext