Speaker
Mr
Caspar Hasner
(Technical University Munich)
Description
The annihilation cross section of TeV scale dark matter particles
$\chi^0$ with electroweak charges into photons is affected by large quantum
corrections due to Sudakov logarithms and the Sommerfeld effect.
We calculate the semi-inclusive photon energy spectrum in
$\chi^0\chi^0\to \gamma+X$ in the vicinity of the maximal photon
energy $E_\gamma = m_\chi$ with NLL' accuracy in an all-order
summation of the electroweak perturbative expansion adopting the
pure wino model. This results in the most precise theoretical
prediction of the annihilation rate for $\gamma$-ray telescopes
with photon energy resolution of parametric order $m_W^2/m_\chi$ for
photons with TeV energies.
Primary author
Prof.
Martin Beneke
(Technical University Munich)
Co-authors
Dr
Alessandro Broggio
(Technical University Munich)
Mr
Caspar Hasner
(Technical University Munich)
Dr
Martin Vollmann
(Technical University Munich)
