CERN Accelerating science

Article
Report number arXiv:1910.04170 ; TUM-HEP-1231-19
Title A Global View of the Off-Shell Higgs Portal
Author(s) Ruhdorfer, Maximilian (Munich, Tech. U.) ; Salvioni, Ennio (Munich, Tech. U.) ; Weiler, Andreas (Munich, Tech. U.)
Publication 2020-02-12
Imprint 2019-10-09
Number of pages 23
Note 12 pages + appendices and references, 10 figures; v2: minor revisions and a few additions, including extra references; v3: new figure comparing VBF reach to parameter regions compatible with first-order EW phase transition (Figure 9), additional references. This version is more up to date than the published one
In: SciPost Phys. 8 (2020) 027
DOI 10.21468/SciPostPhys.8.2.027 (publication)
Subject category hep-ex ; Particle Physics - Experiment ; hep-ph ; Particle Physics - Phenomenology
Study CLIC ; CERN FCC ; IMCC
Project CERN HL-LHC
Abstract We study for the first time the collider reach on the derivative Higgs portal, the leading effective interaction that couples a pseudo Nambu-Goldstone boson (pNGB) scalar Dark Matter to the Standard Model. We focus on Dark Matter pair production through an off-shell Higgs boson, which is analyzed in the vector boson fusion channel. A variety of future high-energy lepton colliders as well as hadron colliders are considered, including CLIC, a muon collider, the High-Luminosity and High-Energy versions of the LHC, and FCC-hh. Implications on the parameter space of pNGB Dark Matter are discussed. In addition, we give improved and extended results for the collider reach on the marginal Higgs portal, under the assumption that the new scalars escape the detector, as motivated by a variety of beyond the Standard Model scenarios.
Copyright/License publication: (License: CC-BY-4.0)
preprint: (License: arXiv nonexclusive-distrib 1.0)



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