Perform a full likelihood analysis of the singlet fermionic dark matter benchmark

Perform a full dwarf-spheroidal and AMS-02 antiproton likelihood analysis using the complete mixed photon and antiproton spectra predicted by the singlet fermionic dark matter benchmark, rather than approximating the model with pure four-bottom limits.

Background

The paper studies a singlet fermionic dark matter (SFDM) benchmark in which dark matter annihilates into pairs of singlet-like scalar mediators. Because the mediators decay into several Standard Model final states, the benchmark predicts a mixed spectrum rather than a purely four-bottom final state.

The presented comparison uses pure-four-bottom dwarf-spheroidal and antiproton limits only as approximate tests. A model-specific likelihood analysis using the full mixed spectrum is therefore left unresolved.

References

A quantitative assessment of the benchmark requires evaluating the dSph and antiproton likelihoods with the full SFDM spectra.

— Dark Matter Interpretations of the Galactic Center Gamma-Ray Excess with 18 Years of Fermi-LAT Data and the FL16Y Source Catalog  (2610.26648 - Kim et al., 19 Oct 2026) in Section VII.B, An SFDM benchmark for the four-bottom cascade

A global assessment using the full model predictions and complementary constraints is left for future work.

— Dark Matter Interpretations of the Galactic Center Gamma-Ray Excess with 18 Years of Fermi-LAT Data and the FL16Y Source Catalog  (2610.26648 - Kim et al., 19 Oct 2026) in Section VIII, Conclusions