The Dark Penguin Shines Light at Colliders
Reinard Primulando, Ennio Salvioni, Yuhsin Tsai

TL;DR
This paper investigates collider constraints on magnetic dipole dark matter using simplified models with light mediators, emphasizing loop effects and form factors, and compares collider results with direct and indirect detection bounds.
Contribution
First study to incorporate one-loop momentum-dependent form factors (Dark Penguin) in collider analyses of magnetic dipole dark matter, exploring various search strategies and future collider prospects.
Findings
Loose missing energy cuts enhance form factor signals.
LHC monophoton and diphoton searches outperform minimal models in certain scenarios.
Displaced photon signals can reveal heavier dark fermions and constrain model parameters.
Abstract
Collider experiments are one of the most promising ways to constrain Dark Matter (DM) interactions. For several types of DM-Standard Model couplings, a meaningful interpretation of the results requires to go beyond effective field theory, considering simplified models with light mediators. This is especially important in the case of loop-mediated interactions. In this paper we perform the first simplified model study of the magnetic dipole interacting DM, by including the one-loop momentum-dependent form factors that mediate the coupling -- given by the Dark Penguin -- in collider processes. We compute bounds from the monojet, monophoton, and diphoton searches at the and TeV LHC, and compare the results to those of direct and indirect detection experiments. Future searches at the TeV hadron collider and at the ILC are also addressed. We find that the optimal search…
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Taxonomy
TopicsParticle physics theoretical and experimental studies · Dark Matter and Cosmic Phenomena · Particle Detector Development and Performance
