# LHC Dark Matter Working Group: Next-generation spin-0 dark matter models

Abe, Tomohiro; Afik, Yoav; Albert, Andreas; Anelli, Christopher R.; Barak, Liron; Bauer, Martin; Behr, J. Katharina; Bell, Nicole F.; Boveia, Antonio; Brandt, Oleg; Busoni, Giorgio; Carpenter, Linda M.; Chen, Yu-Heng; Doglioni, Caterina; Elliot, Alison; Fujiwara, Motoko; Genest, Marie-Helene; Gerosa, Raffaele; Gori, Stefania; Gramling, Johanna; ... mehr

##### Abstract:
Dark matter (DM) simplified models are by now commonly used by the ATLAS and CMS Collaborations to interpret searches for missing transverse energy (E$_{T}$$^{ miss }). The coherent use of these models sharpened the LHC DM search program, especially in the presentation of its results and their comparison to DM direct-detection (DD) and indirect-detection (ID) experiments. However, the community has been aware of the limitations of the DM simplified models, in particular the lack of theoretical consistency of some of them and their restricted phenomenology leading to the relevance of only a small subset of E_{T}$$^{ miss }$ signatures. This document from the LHC Dark Matter Working Group identifies an example of a next-generation DM model, called 2HDM+a, that provides the simplest theoretically consistent extension of the DM pseudoscalar simplified model. A comprehensive study of the phenomenology of the 2HDM+a model is presented, including a discussion of the rich and intricate pattern of mono-X signatures and the relevance of other DM as well as non-DM experiments. Based on our discussions, a set of recommended scans are proposed to explore the parameter space of the 2HDM+a model through LHC searches. ... mehr

 Zugehörige Institution(en) am KIT Institut für Theoretische Physik (ITP) Publikationstyp Zeitschriftenaufsatz Publikationsmonat/-jahr 01.2020 Sprache Englisch Identifikator ISSN: 2212-6864 KITopen-ID: 1000117943 Erschienen in Physics of the Dark Universe Band 27 Seiten Art. Nr.: 100351 Nachgewiesen in Web of ScienceScopus
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