Spallation neutron sources can provide an intense source of new, light particles from the decay at rest of pions, muons, and kaons.
Considering a variety of spallation sources around the world, we study the sensitivity of existing neutrino detectors to the decay of these new particles.
At J-PARC, we show that the fast, magnetized, gaseous argon chambers of the ND280 detector could place...
We present a comprehensive theoretical framework describing single pion resonant production through inelastic dark fermion–nucleon interactions mediated by resonances in the GeV-scale regime. Building upon the Rein–Sehgal approach, we derive differential cross sections for processes in which an incoming dark fermion scatters off a nucleon, exciting a resonance that subsequently decays into a...
