34 citations · 40 across the 4 of their papers we have counts for
4 papers
Multi-Species Thermalization Cascade of Energetic Particles in the Early Universe
Manuel Drees, Bardia Najjari
Heavy long-lived particles are abundant in BSM physics and will, under generic circumstances, get to dominate the energy density of the universe. The resulting matter dominated era…
Photo fragmentation of large dimers into singly charged ions via the knockout mechanism
B. Najjari, A. B. Voitkiv
We study the fragmentation of very large dimers into two singly charged ions caused by absorption of a photon. In this process a photo electron emitted from one atom of the dimer h…
Energy Spectrum of Thermalizing High Energy Decay Products in the Early Universe
Manuel Drees, Bardia Najjari
We revisit the Boltzmann equation governing the spectrum of energetic particles originating from the decay of massive progenitors during the process of thermalization. We assume th…
-electron spectrum: static screened Coulomb field and exchange effects
B. Najjari, X. Mougeot, M. -M. Bé +4
We consider the energy spectrum of emitted electrons in -decay. Exact Coulomb Dirac wave functions describing the -electron in the Coulomb field of the daughter nucleus are u…