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

Abstract

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{sup +}e{sup −} and p-barp) 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 approximatemore » 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.« less

Authors:
; ; ;  [1]
  1. Center for Theoretical Physics, Massachusetts Institute of Technology,77 Massachusetts Ave, Cambridge, MA 02139 (United States)
Publication Date:
Sponsoring Org.:
SCOAP3, CERN, Geneva (Switzerland)
OSTI Identifier:
22572096
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Cosmology and Astroparticle Physics; Journal Volume: 2016; Journal Issue: 06; Other Information: PUBLISHER-ID: JCAP06(2016)024; OAI: oai:repo.scoap3.org:15985; cc-by Article funded by SCOAP3. Content from this work may be used under the terms of the Creative Commons Attribution 3.0 License. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ANNIHILATION; ANTIPROTONS; COSMIC PHOTONS; COSMIC RAY DETECTION; ELECTRONS; GALAXIES; INTERNATIONAL SPACE STATION; LIMITING VALUES; NEUTRINOS; NONLUMINOUS MATTER; PARTICLE DECAY; POSITRONS; RELICT RADIATION; STANDARD MODEL

Citation Formats

Elor, Gilly, Rodd, Nicholas L., Slatyer, Tracy R., and Xue, Wei. Model-independent indirect detection constraints on hidden sector dark matter. United States: N. p., 2016. Web. doi:10.1088/1475-7516/2016/06/024.
Elor, Gilly, Rodd, Nicholas L., Slatyer, Tracy R., & Xue, Wei. Model-independent indirect detection constraints on hidden sector dark matter. United States. doi:10.1088/1475-7516/2016/06/024.
Elor, Gilly, Rodd, Nicholas L., Slatyer, Tracy R., and Xue, Wei. Fri . "Model-independent indirect detection constraints on hidden sector dark matter". United States. doi:10.1088/1475-7516/2016/06/024.
@article{osti_22572096,
title = {Model-independent indirect detection constraints on hidden sector dark matter},
author = {Elor, Gilly and Rodd, Nicholas L. and Slatyer, Tracy R. and Xue, Wei},
abstractNote = {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{sup +}e{sup −} and p-barp) 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.},
doi = {10.1088/1475-7516/2016/06/024},
journal = {Journal of Cosmology and Astroparticle Physics},
number = 06,
volume = 2016,
place = {United States},
year = {Fri Jun 10 00:00:00 EDT 2016},
month = {Fri Jun 10 00:00:00 EDT 2016}
}