Speaker
Weizhen Zhang
(香港中文大学)
Description
Indirect detection is a prominent approach in the search for dark matter. We investigate gamma-ray signals from heavy dark matter decay and annihilation using 1438 days of KM2A and 1484 days of WCDA data from the LHAASO observatory. To reduce the astrophysical background, we mask the Galactic plane and perform a likelihood analysis over the full LHAASO field of view to search for dark matter signals in the diffuse gamma-ray flux from the Galactic halo. We find no excess of dark matter signals, and we place new constraints on the dark matter decay lifetime for masses between $10^3$ and $10^9$ GeV.
Primary authors
Weizhen Zhang
(香港中文大学)
Dr
Wenyu Cao
(CUHK)
Kenny CHUN YU NG
(The Chinese University of Hong Kong)
Dr
Zhe Li
(IHEP)
Dr
Xiaohao You
(IHEP)
