Electroweak resummation of neutralino dark-matter annihilation into high-energy photons

We consider the resummation of large electroweak Sudakov logarithms for annihilation neutralino DM with $\mathcal{O}$(TeV) mass to high-energy photons in minimal supersymmetric standard model, extending previous work on wino and Higgsino models. find that NLL reduces yield by about $20\%$ Higgsino-dominated at masses around 1~TeV, up $45\%$ neutralinos larger admixture heavier near 3~TeV. This sizable effect is relevant when observations or exclusion limits are translated into MSSM parameter-space constraints.