Rekindling s-Wave Dark Matter Annihilation Below 10GeV with Breit-Wigner Effects

Geneviève Bélanger, Sreemanti Chakraborti, Cédric Delaunay +1

Velocity-independent (s-wave) annihilation of thermal Dark Matter is ruled out by CMB data for masses below 10GeV, effectively ruling out the possibility of indirectly detecting it…