Probing Higgs-portal dark matter with vector-boson fusion
Abstract
We constrain the Higgs-portal model employing the vector-boson fusion channel at the LHC. In particular, we include the phenomenologically interesting parameter region near the Higgs resonance, where the Higgs-boson mass is close to the threshold for dark-matter production and a running-width prescription has to be employed for the Higgs-boson propagator. Limits for the Higgs-portal coupling as a function of the dark-matter mass are derived from the CMS search for invisible Higgs-boson decays in vector-boson fusion at 13 TeV. Furthermore, we perform projections for the 14 TeV HL-LHC and the 27 TeV HE-LHC taking into account a realistic estimate of the systematic uncertainties. The respective upper limits on the invisible branching ratio of the Higgs boson reach a level of 2 % and constrain perturbative Higgs-portal couplings up to dark-matter masses of about 110 GeV.
Keywords
Cite
@article{arxiv.1912.08472,
title = {Probing Higgs-portal dark matter with vector-boson fusion},
author = {Jan Heisig and Michael Krämer and Eric Madge and Alexander Mück},
journal= {arXiv preprint arXiv:1912.08472},
year = {2020}
}
Comments
22 pages, 8 figures, minor revisions in introduction and appendix, version published in JHEP