Aachen 2019 – scientific programme
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T: Fachverband Teilchenphysik
T 64: Theorie: Dunkle Materie
T 64.7: Talk
Wednesday, March 27, 2019, 17:30–17:45, S16
Resummed photon spectrum from dark matter annihilation for intermediate energy resolution — Martin Beneke1, Alessandro Broggio2,3, Caspar Hasner1, •Kai Urban1, and Martin Vollmann1 — 1Physik-Department T31 ,TU München, Germany — 2University of Milano-Bicocca, Italy — 3INFN Milano, Italy
The annihilation cross section for TeV-scale weakly interacting massive particles χ0 into photons is affected by large quantum corrections such as Sudakov logarithms and the Sommerfeld effect. In previous work the effective field theory setup and resummation of Sudakov logarithms of the semi-inclusive photon energy spectrum in χ0 χ0 → γ + X was calculated for narrow resolutions Eresγ∼ mW2/mχ with NLL’ accuracy. In this talk, I will discuss the extension to intermediate resolutions of order mW. I will show the matching of the two effective field theory descriptions for the wino dark matter model in an overlap region, thereby providing an accurate description of the energy spectrum for γ-ray telescopes for energy resolutions of about 300 GeV from the endpoint.