3 papers
hep-ph2026
Exploring Invisible New Physics with Exotic Pion Decays
Wolfgang Altmannshofer, Jeff A. Dror, Pierce Giffin +5
We study the sensitivity of past and future stopped-pion experiments to light, invisible dark sector particles produced in exotic pion decays. We consider two-body decays involving…
hep-ph2025
Simplified Spin Dependence in Dark Matter Direct Detection
Pierce Giffin, Benjamin Lillard, Pankaj Munbodh +1
The interactions of dark matter with Standard Model particles can be systematically studied in the language of effective field theories. We investigate dark matter interactions wit…
hep-ph2024
Dark plasmas in the nonlinear regime: constraints from particle-in-cell simulations
William DeRocco, Pierce Giffin
If the dark sector possesses long-range self-interactions, these interactions can source dramatic collective instabilities even in astrophysical settings where the collisional mean…