The Higgs-portal for vector Dark Matter and the Effective Field Theory approach: a reappraisal

Abstract

We reanalyze the effective field theory approach for the scenario in which the particles that account for the dark matter (DM) in the universe are vector states that interact only or mainly through the Standard Model-like Higgs boson observed at the LHC. This model-independent and simple approach, with a minimal set of new input parameters, is widely used as a benchmark in DM searches and studies in astroparticle and collider physics. We show that this effective theory could be the limiting case of ultraviolet complete models, taking as an example the one based on a spontaneously broken U(1) gauge symmetry that incorporates a dark gauge boson and an additional scalar that mixes with the standard Higgs boson. Hence, despite the presence of the new degrees of freedom, measurements of the invisible decay branching ratio of the Higgs boson, as performed at colliders such as the CERN LHC, can be interpreted consistently in such an effective framework and can be made complementary to results of DM searches in direct detection experiments.

16 pages, 5 figures

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• The Higgs Portal to Cosmology
• The Waning of the WIMP: Endgame?
• Radiatively stable ghost and tachyon freedom in Metric Affine Gravity
• Exploration at the high-energy frontier: ATLAS Run~2 searches investigating the exotic jungle beyond the Standard Model
• Vector dark boson mediated feeble interaction between fermionic dark matter and strange quark matter in quark stars
• Effective Theories with Dark Matter Applications
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• Vector dark matter from split SU(2) gauge bosons
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• Exploring Constraints on Simplified Dark Matter Model Through Flavour and Electroweak Observables
• Exploring Direct Detection Suppressed Regions in a Simple 2-Scalar Mediator Model of Scalar Dark Matter
• t-channel dark matter at the LHC -- a whitepaper
• Vector dark matter production from catalyzed annihilation
• Addendum to "Invisible Higgs decay width versus dark matter direct detection cross section in Higgs portal dark matter models"
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• The Higgs-portal for Dark Matter:effective field theories versus concrete realizations
• Hidden SU(2)_D vector dark matter with a scalar septuplet
• The Resurgence of the G(2) Group for the Strong Sector and the Emergence of Dark Matter
• Phenomenology of the Hidden SU(2) Vector Dark Matter Model
• Vector Higgs-Portal Dark Matter: How UV Completion Reopens Viable Parameter Space
• Dark Matter interactions in an $S_4\times Z_5$ flavor symmetry framework
• Exploring vector dark matter via effective interactions
• The Higgs Boson and its Physics -- an Overview