RT Journal Article
T1 Electroweak resummation of neutralino dark-matter annihilation into high-energy photons
A1 Beneke, Martin
A1 Lederer, Stefan
A1 Peset Martín, Clara María
AB We consider the resummation of large electroweak Sudakov logarithms for the annihilation of neutralino DM with (TeV) mass to high-energy photons in the minimal supersymmetric standard model, extending previous work on the minimal wino and Higgsino models. We find that NLL resummation reduces the yield of photons by about 20% for Higgsino-dominated DM at masses around 1 TeV, and up to 45% for neutralinos with larger wino admixture at heavier masses near 3 TeV. This sizable effect is relevant when observations or exclusion limits are translated into MSSM parameter-space constraints.
PB Springer Link
SN 1126-6708
YR 2023
FD 2023-01-31
LK https://hdl.handle.net/20.500.14352/100617
UL https://hdl.handle.net/20.500.14352/100617
LA eng
NO Beneke, M., Lederer, S. & Peset, C. Electroweak resummation of neutralino dark-matter annihilation into high-energy photons. J. High Energ. Phys. 2023, 171 (2023). https://doi.org/10.1007/JHEP01(2023)171
NO Collaborative Research Center-Neutrinos and Dark Matter in Astro and Particle Physics
NO Ministerio de Ciencia e Innovación (España)
DS Docta Complutense
RD 11 abr 2025