3 papers
hep-ph2026
The Migdal effect in Semiconductors for the Effective Field Theory of Dark Matter Direct Detection
Kim V. Berghaus, Rouven Essig, Megan H. McDuffie
The Migdal effect in semiconductors, prompt ionization from a primary nuclear scattering event, can be described across all kinematic regimes using an effective field theory that e…
hep-ph2026
Pushing the Limits of Atomic Dark Matter: First-Principles Recombination Rates and Cosmological Constraints
Jared Barron, Rouven Essig, Megan H. McDuffie +2
Minimal atomic dark matter with its distinctive cooling mechanisms offers an instructive framework for understanding the potential impact of dark matter on small-scale structure fo…
hep-ph2025
Probing Millicharged Particles at an Electron Beam Dump with Ultralow-Threshold Sensors
Rouven Essig, Peiran Li, Zhen Liu +3
We propose to search for millicharged particles produced in high-intensity electron beam dumps using small ultralow-threshold sensors. As a concrete example, we consider a Skipper-…