Abstract
We study freeze-in production of Higgs portal dark matter (DM) at temperatures far below the dark matter mass. The temperature of the Standard Model (SM) thermal bath may have never been high such that dark matter production via thermal emission has been Boltzmann-suppressed. This allows for a significant coupling between the Higgs field and DM, which is being probed by the direct DM detection experiments and invisible Higgs decay searches at the LHC. We delineate the corresponding parameter space in the Higgs portal framework with dark matter of spin 0, 1/2 and 1.
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Acknowledgments
The work of F.C. is supported by the European Union’s Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant agreement No. 860881-HIDDeN. This work used the Scientific Compute Cluster at GWDG, the joint data center of Max Planck Society for the Advancement of Science (MPG) and University of Göttingen. A.G. would like to thank G. Bélanger, F. Boudjema and A. Pukhov for useful discussions.
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Arcadi, G., Costa, F., Goudelis, A. et al. Higgs portal dark matter freeze-in at stronger coupling: observational benchmarks. J. High Energ. Phys. 2024, 44 (2024). https://doi.org/10.1007/JHEP07(2024)044
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DOI: https://doi.org/10.1007/JHEP07(2024)044