Kaluza-Klein FIMP dark matter in warped extra-dimensions

• Published in: The journal of high energy physics Vol. 2020; no. 9; pp. 1 - 31
• Main Authors: Bernal, Nicolás, Donini, Andrea, Folgado, Miguel G., Rius, Nuria
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01-09-2020; SpringerOpen
• Subjects: Beyond Standard Model; Classical and Quantum Gravitation; Cosmology of Theories beyond the SM; Elementary Particles; Physics; Physics and Astronomy; Quantum Field Theories; Quantum Field Theory; Quantum Physics; Regular Article - Theoretical Physics; Relativity Theory; String Theory; Beyond Standard Model; Cosmology of Theories beyond the SM
• ISSN: 1029-8479; 1029-8479
• DOI: 10.1007/JHEP09(2020)142

A
bstract
We study for the first time the case in which Dark Matter (DM) is made of Feebly Interacting Massive Particles (FIMP) interacting just gravitationally with the standard model particles in an extra-dimensional Randall-Sundrum scenario. We assume that both the dark matter and the standard model are localized in the IR-brane and only interact via gravitational mediators, namely the graviton, the Kaluza-Klein gravitons and the radion. We found that in the early Universe DM could be generated via two main processes: the direct freeze-in and the sequential freeze-in. The regions where the observed DM relic abundance is produced are largely compatible with cosmological and collider bounds.