17 papers
Can the universe be matter-dominated after a supercooled first-order phase transition?
Henda Mansour, Yann Gouttenoire, Felix Kahlhoefer
We show that the answer is generally no, at least not immediately. Bubble collisions leave behind a highly inhomogeneous scalar field with persistent relativistic gradients, produc…
DAMA/LIBRA and dark matter: decisive tension or contrived cancellation
Giorgio Busoni, Jonathan M. Cornell, Will Handley +6
The ANAIS-112 and COSINE-100 experiments were constructed to test the long-observed dark matter-like annual modulation signal reported by DAMA. While they have reported null result…
Sub-GeV dark matter and multi-decay signatures from dark showers at beam-dump experiments
Elias Bernreuther, Nicoline Hemme, Felix Kahlhoefer +2
In models of strongly-interacting dark sectors, the production of dark quarks at accelerators can give rise to dark showers with multiple dark mesons in the final state. If some of…
Probing the Higgs Portal to a Strongly-Interacting Dark Sector at the FCC-ee
Cesare Cazzaniga, Annapaola de Cosa, Felix Kahlhoefer +3
This work explores exotic signatures from confining dark sectors that may arise in the collision mode at the Future Circular Collider. Assuming the Higgs boson mediates th…
Probing Sub-GeV Dark Matter via Migdal Effect-Induced Electron Excitations
Felix Kahlhoefer, Liangliang Su
The electron ionization predicted by the Migdal effect in dark matter-nucleus scattering enhances experimental sensitivity to sub-GeV dark matter. In this work, we demonstrate that…
Cosmological constraints on TeV-scale dark matter subcomponents decaying between recombination and reionisation
Markus R. Mosbech, Cristina Benso, Felix Kahlhoefer
The Dark Ages and the Cosmic Dawn are an untapped well of information about the particle physics properties of dark matter, which may become accessible with future radio telescopes…