Heavy Dark Matter Annihilation from Effective Field Theory
Author(s)
Ovanesyan, Grigory; Slatyer, Tracy Robyn; Stewart, Iain
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We formulate an effective field theory description for SU(2)[subscript L] triplet fermionic dark matter by combining nonrelativistic dark matter with gauge bosons in the soft-collinear effective theory. For a given dark matter mass, the annihilation cross section to line photons is obtained with 5% precision by simultaneously including Sommerfeld enhancement and the resummation of electroweak Sudakov logarithms at next-to-leading logarithmic order. Using these results, we present more accurate and precise predictions for the gamma-ray line signal from annihilation, updating both existing constraints and the reach of future experiments.
Date issued
2015-05Department
Massachusetts Institute of Technology. Center for Theoretical Physics; Massachusetts Institute of Technology. Department of PhysicsJournal
Physical Review Letters
Publisher
American Physical Society
Citation
Ovanesyan, Grigory, Tracy R. Slatyer, and Iain W. Stewart. "Heavy Dark Matter Annihilation from Effective Field Theory." Phys. Rev. Lett. 114, 211302 (May 2015). © 2015 American Physical Society
Version: Final published version
ISSN
0031-9007
1079-7114