Dark-Matter Decay as a Complementary Probe of Multicomponent Dark Sectors
Dark-Matter Decay as a Complementary Probe of Multicomponent Dark Sectors
In single-component theories of dark matter, the 2→2 amplitudes for dark-matter production, annihilation, and scattering can be related to each other through various crossing symmetries. The detection techniques based on these processes are thus complementary. However, multicomponent theories exhibit an additional direction for dark-matter complementarity: the possibility of dark-matter decay …