Published November 1, 2014
| Published + Submitted
Journal Article
Open
Strongly interacting dark matter: Self-interactions and keV lines
Abstract
We consider a simple supersymmetric hidden sector: pure SU(N) gauge theory. Dark matter is made up of hidden glueballinos with mass m_X and hidden glueballs with mass near the confinement scale Λ. For m_X ∼ 1 TeV and Λ ∼ 100 MeV, the glueballinos freeze out with the correct relic density and selfinteract through glueball exchange to resolve small-scale structure puzzles. An immediate consequence is that the glueballino spectrum has a hyperfine splitting of order Λ^2 = m_X ∼ 10 keV. We show that the radiative decays of the excited state can explain the observed 3.5 keV x-ray line signal from clusters of galaxies, Andromeda, and the Milky Way.
Additional Information
© 2014 American Physical Society. Received 9 September 2014; published 18 November 2014. We are grateful to Geoff Bodwin for helpful correspondence. J. L. F. and Y. S. thank the CERN Theoretical Physics Group and J. L. F. thanks the Technion Particle Physics Center for hospitality. This research is supported in part by BSF Grant No. 2010221 (J. L. F. and Y. S.), NSF Grants No. HY–1316792 (J. L. F. and T. M. P. T.), No. PHY–1214648, and No. PHY–1316792 (M. K.), ISF Grant No. 1367/11 and the ICORE Program of Planning and Budgeting Committee and ISF Grant No. 1937/12 (Y. S.), DOE Grant No. DE-SC0011632 and the Gordon and Betty Moore Foundation through Grant No. 776 (K. B.), a Guggenheim Foundation grant (J. L. F.), and the University of California, Irvine, through a Chancellor's Fellowship (T.M. P. T.).Attached Files
Published - PhysRevD.90.095016.pdf
Submitted - 1408.6532v1.pdf
Files
PhysRevD.90.095016.pdf
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Additional details
- Alternative title
- SIMPle Dark Matter: Self-Interactions and keV Lines
- Eprint ID
- 49762
- Resolver ID
- CaltechAUTHORS:20140917-074642072
- 2010221
- Binational Science Foundation (USA-Israel)
- PHY-1316792
- NSF
- PHY-1214648
- NSF
- PHY-1316792
- NSF
- 1367/11
- Israel Science Foundation
- ICORE Program of Planning and Budgeting Committee
- 1937/12
- Israel Science Foundation
- DE-SC0011632
- Department of Energy (DOE)
- 776
- Gordon and Betty Moore Foundation
- John Simon Guggenheim Foundation
- University of California, Irvine
- Created
-
2014-09-18Created from EPrint's datestamp field
- Updated
-
2021-11-10Created from EPrint's last_modified field
- Caltech groups
- Moore Center for Theoretical Cosmology and Physics, Walter Burke Institute for Theoretical Physics
- Other Numbering System Name
- CALT-TH
- Other Numbering System Identifier
- 148