Speaker
Daniel Salazar-Gallegos
(Michigan State University)
Description
The search for new physics beyond the Standard Model (SM) is closely tied to understanding the nature of Dark Matter (DM). Dwarf spheroidal galaxies (dSphs) are prime targets for indirect DM searches because their ratios of DM mass to baryonic mass is high. We present a novel combination analysis with multiple gamma-ray observatories. We established a collaboration of three Imaging Air Cherenkov Telescopes (IACTs): H.E.S.S., MAGIC, and VERITAS; the Fermi-LAT satellite, and the water Cherenkov detector, HAWC. Our collaboration maximizes the sensitivity of DM searches towards 20 dSphs by combining dSph data for the first time across these observatories. We focus our search on Weakly Interacting Massive Particles (WIMPs) DM annihilation to SM particles. This analysis uses a joint maximum likelihood to constrain DM self-annihilation cross sections to SM particles versus DM particle mass. Our constraints are over a DM mass range [5 GeV, 100 TeV] which is the widest range ever considered for indirect DM searches. Our limits will be the strictest for indirect detection to date with a factor 2-3 improvement over individual experiments' limits.
| Please choose the session this abstract belongs to | Dark matter |
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Primary authors
Benjamin Zitzer
(McGill University)
Celine Armand
(University of Geneva; 18 Univ. Grenoble Alpes, Univ. Savoie Mont Blanc)
Chiara Guiri
(DESY Zeuthen)
Daniel Kerszberg
(IFAE-BIST, Spain)
Daniel Salazar-Gallegos
(Michigan State University)
Elisa Pueschel
(DESY Zeuthen)
Dr
Emmanuel Moulin
(CEA Saclay)
Eric Charles
(SLAC)
J. Patrick Harding
(Los Alamos National Laboratory)
Dr
Javier Rico
(Institut de Fisica d'Altes Energies, Barcelona, Spain)
Kirsten Tollefson
(Michigan State University)
Lucia Rinchiuso
(CEA Saclay)
Mattia di Mauro
(SLAC)
Meiner Tjark
(IPARCOS, Universidad Complutense de Madrid)
Vincent Poireau
(LAPP)
