Hello! I`m currently reading an article about antideuterium production and dark matter detection. The article often uses the term cross-section, like for example: “Assuming an annihilation cross section into a particular Standard Model Channel” and “Probe scattering cross sections through the recoil of dark matter off of target nuclei”. I would be very grateful if someone could clarify this term to me in this context. Also, is it correct that we can expect an high signal-to-background ratio in the antiproton flux alongside the expected antideuterium flux and do we use this actively when probing for dark matter candidates?