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arXiv · 2007.08546

Heavy dark matter through the dilaton portal

Benjamin Fuks·Mark D. Goodsell·Dong Woo Kang·Pyungwon Ko·Seung J. Lee·Manuel Utsch
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Abstract

We re-examine current and future constraints on a heavy dilaton coupled to a simple dark sector consisting of a Majorana fermion or a St\"uckelberg vector field. We include three different treatments of dilaton-Higgs mixing, paying particular attention to a gauge-invariant formulation of the model. Moreover, we also invite readers to re-examine effective field theories of vector dark matter, which we show are missing important terms. Along with the latest Higgs coupling data, heavy scalar search results, and dark matter density/direct detection constraints, we study the LHC bounds on the model and estimate the prospects of dark matter production at the future HL-LHC and 100 TeV FCC colliders. We additionally compute novel perturbative unitarity constraints involving vector dark matter, dilaton and gluon scattering.

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Benjamin Fuks, Mark D. Goodsell, Dong Woo Kang, Pyungwon Ko, Seung J. Lee, Manuel Utsch. 2020-07-16. Heavy dark matter through the dilaton portal. https://doi.org/10.1007/jhep10(2020)044

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