Heavy dark matter through the dilaton portal
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.
Cite
@article{arxiv.2007.08546,
title = {Heavy dark matter through the dilaton portal},
author = {Benjamin Fuks and Mark D. Goodsell and Dong Woo Kang and Pyungwon Ko and Seung J. Lee and Manuel Utsch},
journal= {arXiv preprint arXiv:2007.08546},
year = {2020}
}
Comments
18 pages, 10 figures