CERN Accelerating science

Article
Report number	arXiv:2110.15391 ; CERN-TH-2021-174
Title	Phenomenological analysis of multi-pseudoscalar mediated dark matter models
Author(s)	Banerjee, Shankha (CERN) ; Bélanger, Geneviève (Annecy, LAPTH) ; Bhatia, Disha (IMSc, Chennai) ; Fuks, Benjamin (Paris, LPTHE) ; Raychaudhuri, Sreerup (Tata Inst.)
Publication	2022-07-18
Imprint	2021-10-28
Number of pages	26
Note	matches the published version: JHEP 07 (2022) 111
In:	JHEP 2207 (2022) 111
DOI	10.1007/JHEP07(2022)111
Subject category	hep-ex ; Particle Physics - Experiment ; hep-ph ; Particle Physics - Phenomenology
Abstract	Non-minimal simplified extensions of the Standard Model have gained considerable currency in the context of dark matter searches at the LHC, since they predict enhanced mono-Higgs and mono-$W/Z$ signatures over large parts of the parameter space. However, these non-minimal models obviously lack the simplicity and directness of the original simplified models, and are more heavily dependent on the model assumptions. We propose to classify these models generically on the basis of additional mediator(s) and dark matter particles. As an example, we take up a scenario involving multiple pseudoscalar mediators, and a single Dirac dark matter particle, the latter being a popular introduction to ensure ultraviolet completion of theories with multiple pseudoscalar fields. In the chosen scenario, we discuss the viable channels and signatures of relevance at the future runs of the LHC. These are then compared with the minimal simplified scenarios and distinguishing features are pinpointed.
Copyright/License	Publication: (License: CC-BY-4.0), sponsored by SCOAP³ preprint: (License: CC BY 4.0)

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