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  From gamma ray line signals of dark matter to the LHC

Kopp, J., Neil, E. T., Primulando, R., & Zupan, J. (2013). From gamma ray line signals of dark matter to the LHC. Physics of the Dark Universe, 2(1), 22-34. doi:10.1016/j.dark.2013.02.001.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-0013-FAD2-F Version Permalink: https://hdl.handle.net/11858/00-001M-0000-0014-649A-9
Genre: Journal Article

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 Creators:
Kopp, Joachim1, 2, Author           
Neil, Ethan T.2, Author
Primulando, Reinard3, Author
Zupan, Jure4, Author
Affiliations:
1Division Prof. Dr. Manfred Lindner, MPI for Nuclear Physics, Max Planck Society, ou_904549              
2Fermilab, P.O. Box 500, Batavia, IL 60510, USA, ou_persistent22              
3Department of Physics and Astronomy, Johns Hopkins University, Baltimore, MD 21218, USA, ou_persistent22              
4Department of Physics, University of Cincinnati, Cincinnati, OH 45221, USA, ou_persistent22              

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Free keywords: High Energy Physics - Phenomenology, hep-ph,Astrophysics, Cosmology and Extragalactic Astrophysics, astro-ph.CO,High Energy Physics - Experiment, hep-ex
 Abstract: We explore the relationship between astrophysical gamma-ray signals and LHC signatures for a class of phenomenologically successful secluded dark matter models, motivated by recent evidence for a ~130 GeV gamma-ray line. We consider in detail scenarios in which interactions between the dark sector and the standard model are mediated by a vev-less scalar field \phi, transforming as an N-plet (N > 3) under SU(2)_L. Since some of the component fields of \phi carry large electric charges, loop induced dark matter annihilation to \gamma \gamma and \gamma Z can be enhanced without the need for non-perturbatively large couplings, and without overproduction of continuum gamma-rays from other final states. We discuss prospects for other experimental tests, including dark matter-nucleon scattering and production of \phi at the LHC, where future searches for anomalous charged tracks may be sensitive. The first LHC hints could come from the Higgs sector, where loop corrections involving \phi lead to significantly modified h to \gamma \gamma and h to \gamma Z branching ratios.

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Language(s): eng - English
 Dates: 2013-03
 Publication Status: Published online
 Pages: 27 pages, 10 figures. v2: added references, fixed import-order issue with cleveref and hyperref. v3: updated to journal version. v4: erratum correction to figs. 7-8 for monojet/monophoton cross-sections
 Publishing info: -
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 Rev. Type: -
 Identifiers: arXiv: 1301.1683
URI: http://arxiv.org/abs/1301.1683
DOI: 10.1016/j.dark.2013.02.001
Report Nr.: FERMILAB-PUB-13-006-T
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Title: Physics of the Dark Universe
Source Genre: Journal
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Publ. Info: New York, NY : Elsevier
Pages: - Volume / Issue: 2 (1) Sequence Number: - Start / End Page: 22 - 34 Identifier: -