Model-independent indirect detection constraints on hidden sector dark matter

Elor, Gilly; Rodd, Nicholas L.; Slatyer, Tracy R.; Xue, Wei

doi:10.1088/1475-7516/2016/06/024

Title: Model-independent indirect detection constraints on hidden sector dark matter

Journal Article · Fri Jun 10 00:00:00 EDT 2016 · Journal of Cosmology and Astroparticle Physics

DOI:https://doi.org/10.1088/1475-7516/2016/06/024· OSTI ID:1436984

Elor, Gilly ^[1]; Rodd, Nicholas L. ^[1];

^[1]; Xue, Wei ^[1]

Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Center for Theoretical Physics

If dark matter inhabits an expanded ``hidden sector'', annihilations may proceed through sequential decays or multi-body final states. We map out the potential signals and current constraints on such a framework in indirect searches, using a model-independent setup based on multi-step hierarchical cascade decays. While remaining agnostic to the details of the hidden sector model, our framework captures the generic broadening of the spectrum of secondary particles (photons, neutrinos, e⁺e^- and $$\overline{p}$$ p) relative to the case of direct annihilation to Standard Model particles. We explore how indirect constraints on dark matter annihilation limit the parameter space for such cascade/multi-particle decays. We investigate limits from the cosmic microwave background by Planck, the Fermi measurement of photons from the dwarf galaxies, and positron data from AMS-02. The presence of a hidden sector can change the constraints on the dark matter by up to an order of magnitude in either direction (although the effect can be much smaller). We find that generally the bound from the Fermi dwarfs is most constraining for annihilations to photon-rich final states, while AMS-02 is most constraining for electron and muon final states; however in certain instances the CMB bounds overtake both, due to their approximate independence on the details of the hidden sector cascade. We provide the full set of cascade spectra considered here as publicly available code with examples at http://web.mit.edu/lns/research/CascadeSpectra.html.

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Research Organization:: Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP)

Grant/Contract Number:: SC0013999; SC00012567

OSTI ID:: 1436984

Alternate ID(s):: OSTI ID: 1248472

Report Number(s):: MIT-CTP/4742; DE−SC00012567; TRN: US1900259

Journal Information:: Journal of Cosmology and Astroparticle Physics, Vol. 2016, Issue 06; ISSN 1475-7516

Publisher:: Institute of Physics (IOP)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 89 works

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Hidden On-Shell Mediators for the Galactic Center Gamma-Ray Excess Abdullah, Mohammad; DiFranzo, Anthony; Rajaraman, Arvind arXiv https://doi.org/10.48550/arxiv.1404.6528	text	January 2014
The windows for kinetically mixed Z'-mediated dark matter and the galactic center gamma ray excess Cline, James M.; Dupuis, Grace; Liu, Zuowei arXiv https://doi.org/10.48550/arxiv.1405.7691	text	January 2014
Background model systematics for the Fermi GeV excess Calore, Francesca; Cholis, Ilias; Weniger, Christoph arXiv https://doi.org/10.48550/arxiv.1409.0042	text	January 2014
Discovery of a New Galactic Center Excess Consistent with Upscattered Starlight Abazajian, Kevork N.; Canac, Nicolas; Horiuchi, Shunsaku arXiv https://doi.org/10.48550/arxiv.1410.6168	text	January 2014
Signals of a Light Dark Force in the Galactic Center Liu, Jia; Weiner, Neal; Xue, Wei arXiv https://doi.org/10.48550/arxiv.1412.1485	text	January 2014
Constraining the Higgs portal with antiprotons Urbano, Alfredo; Xue, Wei arXiv https://doi.org/10.48550/arxiv.1412.3798	preprint	January 2014
Multi-Step Cascade Annihilations of Dark Matter and the Galactic Center Excess Elor, Gilly; Rodd, Nicholas L.; Slatyer, Tracy R. arXiv https://doi.org/10.48550/arxiv.1503.01773	text	January 2015
On The Gamma-Ray Emission From Reticulum II and Other Dwarf Galaxies Hooper, Dan; Linden, Tim arXiv https://doi.org/10.48550/arxiv.1503.06209	text	January 2015
Indirect Dark Matter Signatures in the Cosmic Dark Ages I. Generalizing the Bound on s-wave Dark Matter Annihilation from Planck Slatyer, Tracy R. arXiv https://doi.org/10.48550/arxiv.1506.03811	text	January 2015
Secondary antiprotons and propagation of cosmic rays in the Galaxy and heliosphere Moskalenko, I. V.; Strong, A. W.; Ormes, J. F. arXiv https://doi.org/10.48550/arxiv.astro-ph/0106567	text	January 2001
Cosmic-ray propagation and interactions in the Galaxy Strong, Andrew W.; Moskalenko, Igor V.; Ptuskin, Vladimir S. arXiv https://doi.org/10.48550/arxiv.astro-ph/0701517	text	January 2007
Precision Measurement of Cosmic-Ray Antiproton Spectrum Orito, S.; Maeno, T.; Matsunaga, H. arXiv https://doi.org/10.48550/arxiv.astro-ph/9906426	text	January 1999
Enhanced anti-deuteron Dark Matter signal and the implications of PAMELA Kadastik, Mario; Raidal, Martti; Strumia, Alessandro Physics Letters B, Vol. 683, Issue 4-5 https://doi.org/10.1016/j.physletb.2009.12.005	journal	January 2010
The role of antiprotons and antideuterons in dark matter indirect detection Vittino, A.; Fornengo, N.; Maccione, L. Astroparticle, Particle, Space Physics and Detectors for Physics Applications https://doi.org/10.1142/9789814603164_0034	conference	June 2014

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