Heavy Dark Matter Annihilation from Effective Field Theory
Name
PhysRevLett.114.211302.pdf
Size
367.17 KB
Format
Adobe PDF
Checksum (MD5)
58d64a5a084012e65d2acbbf755c39cc
Author(s)
Ovanesyan, Grigory
Slatyer, Tracy Robyn
Stewart, Iain
Date Issued
May 2015
Journal
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
Abstract
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.
MIT Department
Massachusetts Institute of Technology. Center for Theoretical Physics
Massachusetts Institute of Technology. Department of Physics
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1103/PhysRevLett.114.211302
