Dark matter interacting via a massive spin-2 mediator in warped extra-dimensions

A bstract We study dark matter interacting via a massive spin-2 mediator. To have a consistent effective theory for the spin-2 particle, we work in a warped extra-dimensional model such that the mediator(s) are the Kaluza-Klein (KK) modes of the 5D graviton. We pay close attention to dark matter ann...

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Published inThe journal of high energy physics Vol. 2021; no. 11; pp. 1 - 29
Main Authors de Giorgi, A., Vogl, S.
Format Journal Article
LanguageEnglish
Published Berlin/Heidelberg Springer Berlin Heidelberg 01.11.2021
Springer Nature B.V
SpringerOpen
Subjects
Beyond Standard Model
Classical and Quantum Gravitation
Cosmology of Theories beyond the SM
Dark matter
Effective Field Theories
Elementary Particles
Gravitons
High energy physics
Particle spin
Physics
Physics and Astronomy
Quantum Field Theories
Quantum Field Theory
Quantum Physics
Regular Article - Theoretical Physics
Relativity Theory
String Theory
Effective Field Theories
Beyond Standard Model
Cosmology of Theories beyond the SM
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Summary:A bstract We study dark matter interacting via a massive spin-2 mediator. To have a consistent effective theory for the spin-2 particle, we work in a warped extra-dimensional model such that the mediator(s) are the Kaluza-Klein (KK) modes of the 5D graviton. We pay close attention to dark matter annihilations into KK-gravitons. Due to the high energy behavior of longitudinal modes of spin-2 fields, these channels exhibit a tremendous growth at large center of mass energies s if only one spin-2 mediator is considered. For the first time, we include the full KK-tower in this dark matter production process and find that this growth is unphysical and cancels once the full field content of the extra-dimensional theory is taken into account. Interestingly, this implies that it is not possible to approximate the results obtained in the full theory with a reduced set of effective interactions once s is greater than the first graviton mass. This casts some doubt on the universal applicability of previous studies with spin-2 mediators within an EFT framework and prompts us to revisit the phenomenological allowed parameter space of gravitationally interacting scalar dark matter in warped extra-dimensions.
ISSN:1029-8479
1029-8479
DOI:10.1007/JHEP11(2021)036