Ponente
Descripción
The study of cosmic rays with indirect detection searches provides a powerful tool to test the properties of dark matter (DM), especially through their potential imprints on the injection spectra. Adopting a model-independent approach, we systematically explore the characteristics of cosmic ray injection spectra arising from DM scenarios exhibiting a richer phenomenology. Our analysis goes beyond conventional direct annihilation signals by incorporating additional processes, namely one-step cascade mechanisms such as one-step annihilation and one-step semi-annihilation. We examine in detail the unique spectral features associated with each channel and consider the impact of scenarios involving weighted combinations of these contributions. This general framework allows us to quantify how effective parameters such as DM and mediator masses, as well as the relative contributions of different channels, shape the resulting injection spectra. It also provides a foundation to reinterpret existing constraints from indirect detection experiments on direct annihilation within an extended parameter space that includes one-step processes. To support and motivate our analysis, we present a concrete model in which a scalar DM candidate is stabilized by a non-Abelian symmetry and interacts with the visible sector through an axion-like particle. This setup naturally accommodates the coexistence of all three types of interactions.emphasized text
