6533b826fe1ef96bd1283f4d

RESEARCH PRODUCT

Probing Higgs-portal dark matter with vector-boson fusion

Jan HeisigEric MadgeA. MückMichael Kramer

subject

PhysicsNuclear and High Energy PhysicsParticle physicsLarge Hadron ColliderHiggs PhysicsBranching fractionDark matterHigh Energy Physics::PhenomenologyPropagatorFOS: Physical sciences530Resonance (particle physics)Vector bosonHigh Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)Beyond Standard ModelHiggs bosonlcsh:QC770-798ddc:530High Energy Physics::Experimentlcsh:Nuclear and particle physics. Atomic energy. RadioactivityBoson

description

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.

yearjournalcountryeditionlanguage
2020-03-30Journal of High Energy Physics
10.1007/jhep03(2020)183http://link.springer.com/article/10.1007/JHEP03(2020)183