Speaker
Jennifer Maria Frieden
(EPFL - Ecole Polytechnique Federale Lausanne (CH))
Description
The annihilation of dark-matter particles may lead to the production of monochromatic gamma rays. In this contribution, the search for spectral lines in the gamma-ray spectrum using eight years of data collected with the space-borne Dark Matter Particle Explorer (DAMPE) is presented. To improve the event selection, we developed two machine-learning algorithms that outperform all the standard methods. No line signal is found between 5 GeV and 1 TeV in several regions of interest (ROI) for different dark-matter density profiles. The constraints on the velocity-averaged cross-section for the neutralino annihilation are estimated and compared with those obtained with the Fermi-LAT data.
Author
Jennifer Maria Frieden
(EPFL - Ecole Polytechnique Federale Lausanne (CH))
