Universal properties of pseudoscalar mediators in dark matter extensions of 2HDMs

Bauer, Martin; Klassen, Martin; Tenorth, Valentin

Abstract

We discuss universal signals of consistent models of pseudoscalar mediators for collider searches for Dark Matter. Keeping only the degrees of freedom that can not be decoupled due to consistency conditions, we present a universality class of simplified models with pseudoscalar mediators and renormalizable couplings to Standard Model fields. We compute stability and perturbativity constraints, constraints from electroweak precision measurements, collider searches for new heavy particles as well as constraints from relic density measurements and indirect detection experiments searching for signals of Dark Matter annihilation into photons. We find that the mono-Z final state is the strongest, universal signal of this class of models, with additional signatures present in the different ultraviolet completions that can be used to distinguish between them.

Citation

Bauer, M., Klassen, M., & Tenorth, V. (2018). Universal properties of pseudoscalar mediators in dark matter extensions of 2HDMs. Journal of High Energy Physics, 07, Article 107. https://doi.org/10.1007/jhep07%282018%29107

• Journal Article Type: Article
• Acceptance Date: Jun 23, 2018
• Online Publication Date: Jul 16, 2018
• Publication Date: 2018-07
• Deposit Date: Nov 27, 2018
• Journal: Journal of High Energy Physics
• Print ISSN: 1126-6708
• Publisher: Scuola Internazionale Superiore di Studi Avanzati (SISSA)
• Peer Reviewed: Peer Reviewed
• Volume: 07
• Article Number: 107
• DOI: https://doi.org/10.1007/jhep07%282018%29107