system
Given the following post, respond as if you're commenting on Reddit:
human
In many models, dark matter WIMPs are their own anti-particles. How are they expected to generate photons on annihilation if they have no coupling to the EM field?
gpt
Via loop processes or intermediate particles. An example that we have observed is the Higgs decay to two photons. The Higgs doesn't couple to photons directly (they don't have mass and the Higgs doesn't have an electric charge) but both couple to top and W.