U.S. Department of EnergyOffice of Scientific and Technical Information
Simplified Dark Matter Models for the Galactic Center Gamma-Ray Excess
Abstract
Motivated by the gamma-ray excess observed from the region surrounding the Galactic Center, we explore particle dark matter models that could potentially account for the spectrum and normalization of this signal. Taking a model-independent approach, we consider an exhaustive list of tree-level diagrams for dark matter annihilation, and determine which could account for the observed gamma-ray emission while simultaneously predicting a thermal relic abundance equal to the measured cosmological dark matter density. We identify a wide variety of models that can meet these criteria without conflicting with existing constraints from direct detection experiments or the Large Hadron Collider (LHC). The prospects for detection in near future dark matter experiments and/or the upcoming 14 TeV LHC appear quite promising.
- Authors:
- Publication Date:
- Research Org.:
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- OSTI Identifier:
- 1155863
- Report Number(s):
- MCTP-14-07; FERMILAB-PUB-14-060-A
Journal ID: ISSN 1550-7998; arXiv eprint number arXiv:1404.0022
- DOE Contract Number:
- AC02-07CH11359
- Resource Type:
- Journal Article
- Journal Name:
- Physical Review. D, Particles, Fields, Gravitation and Cosmology
- Additional Journal Information:
- Journal Volume: 89; Journal Issue: 11; Journal ID: ISSN 1550-7998
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 79 ASTRONOMY AND ASTROPHYSICS
Citation Formats
Berlin, Asher, Hooper, Dan, and McDermott, Samuel D. Simplified Dark Matter Models for the Galactic Center Gamma-Ray Excess. United States: N. p., 2014.
Web. doi:10.1103/PhysRevD.89.115022.
Berlin, Asher, Hooper, Dan, & McDermott, Samuel D. Simplified Dark Matter Models for the Galactic Center Gamma-Ray Excess. United States. https://doi.org/10.1103/PhysRevD.89.115022
Berlin, Asher, Hooper, Dan, and McDermott, Samuel D. 2014.
"Simplified Dark Matter Models for the Galactic Center Gamma-Ray Excess". United States. https://doi.org/10.1103/PhysRevD.89.115022. https://www.osti.gov/servlets/purl/1155863.
@article{osti_1155863,
title = {Simplified Dark Matter Models for the Galactic Center Gamma-Ray Excess},
author = {Berlin, Asher and Hooper, Dan and McDermott, Samuel D.},
abstractNote = {Motivated by the gamma-ray excess observed from the region surrounding the Galactic Center, we explore particle dark matter models that could potentially account for the spectrum and normalization of this signal. Taking a model-independent approach, we consider an exhaustive list of tree-level diagrams for dark matter annihilation, and determine which could account for the observed gamma-ray emission while simultaneously predicting a thermal relic abundance equal to the measured cosmological dark matter density. We identify a wide variety of models that can meet these criteria without conflicting with existing constraints from direct detection experiments or the Large Hadron Collider (LHC). The prospects for detection in near future dark matter experiments and/or the upcoming 14 TeV LHC appear quite promising.},
doi = {10.1103/PhysRevD.89.115022},
url = {https://www.osti.gov/biblio/1155863},
journal = {Physical Review. D, Particles, Fields, Gravitation and Cosmology},
issn = {1550-7998},
number = 11,
volume = 89,
place = {United States},
year = {Sun Jun 01 00:00:00 EDT 2014},
month = {Sun Jun 01 00:00:00 EDT 2014}
}
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