Multiple Higgs-Portal and Gauge-Kinetic Mixings

Abstract

We develop a phenomenological formalism for mixing effects between the Standard Model and hidden-sector fields, motivated by dark matter in the Universe as well as string theories. The scheme includes multiple Higgs-portal interactions in the scalar sector as well as multiple gauge-kinetic mixings in the abelian gauge sector. While some of the mixing effects can be cast in closed form, other elements can be controlled analytically only by means of perturbative expansions in the ratio of standard scales over large hidden scales. Higgs and vector-boson masses and mixings are illustrated numerically for characteristic processes.

arXiv comment22 pages, 8 figures, published version

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• Triple Higgs boson production at a 100 TeV proton-proton collider
• Dark photons and resonant monophoton signatures in Higgs boson decays at the LHC
• Discovering Higgs boson pair production through rare final states at a 100 TeV collider
• Radiative Symmetry Breaking from Flat Potential in various U(1)' models
• Novel Higgs Potentials from Gauge Mediation of Exact Scale Breaking
• Radiative symmetry breaking from interacting UV fixed points
• Indirect and direct signatures of Higgs portal decaying vector dark matter for positron excess in cosmic rays
• Scale Invariant FIMP Miracle
• Feebly coupled vector boson dark matter in effective theory
• Non-minimally Coupled Vector Boson Dark Matter
• On-shell interference effects in Higgs final states
• Towards resolving strongly-interacting dark sectors at colliders
• Kinetic mixing and symmetry breaking dependent interactions of the dark photon
• Dark matter amnesia in out-of-equilibrium scenarios
• Perturbative Higgs CP violation, unitarity and phenomenology
• On interference effects in top-philic decay chains
• A $B-$anomaly motivated $Z^{\prime }$ boson at the energy and precision frontiers