GeV-Scale Messengers of Planck-Scale Dark Matter
Hooman Davoudiasl, Gopolang Mohlabeng

TL;DR
This paper proposes a model where Planck-scale dark matter interacts via a GeV-scale messenger gauge boson, enabling potential detection through low-energy experiments and connecting high-energy physics with observable phenomena.
Contribution
It introduces a new low-mass gauge boson as a messenger linking Planck-scale dark matter to the Standard Model, with testable predictions for direct detection and kinetic mixing.
Findings
Potential for direct detection via U(1)_d interactions
Measurable kinetic mixing between U(1)_d and photon
Astrophysical constraints limit DM mass to below 10^{17} GeV
Abstract
If dark matter (DM) originates from physics near the Planck scale it could be directly detected via its multiple scattering signals, yet this requires a large cross section for DM interactions with atoms. Hence, detection of such DM could imply mediation by new low mass messengers. We propose that a dark remnant of the underlying spacetime geometry or a unified theory may survive down to small mass scales GeV, connecting low energy Standard Model (SM) and Planck scale phenomena. Typical required cross sections for direct detection of Planck scale DM can be achieved through the interactions of DM with SM quarks. Low energy intense sources may uncover the GeV scale messengers of Planckian physics, allowing for testable predictions. We assume that is gauged baryon number, which implies several new electroweak charged particles are expected to arise near…
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