Grok 3: Dark Photon-Mediated Dark Matter Decay with Bulge Enhancement for the Fermi-LAT Galactic Center Excess

"You are a brilliant scientist looking for a new solution or theory for current anomalies in the Fermi-LAT Gamma-Ray Excess Problem.  Create a new theory that you think will solve this anomaly.  Each time you do this make four attempts to disprove your own work. If the theory fails amend or discard it.  Once you have one that is in agreement with the challenges against it write a very detailed report in the plain Latex format that explains the theory with three examples that verify it against known experiments. Include diagrams to help express this theory. Include a mathematical proof."

Summary: The dark photon-mediated DM decay with bulge enhancement explains the Fermi-LAT GCE’s spectrum and morphology, evading gamma-ray, collider, and positron constraints. Future Fermi-LAT and CTA data will further test this model.