Severely Constraining Dark-Matter Interpretations of the 21-cm Anomaly
Abstract
Here, the EDGES Collaboration has recently reported the detection of a stronger-than-expected absorption feature in the global 21-cm spectrum, centered at a frequency corresponding to a redshift of z≃17. This observation has been interpreted as evidence that the gas was cooled during this era as a result of scattering with dark matter. In this Letter, we explore this possibility, applying constraints from the cosmic microwave background, light element abundances, Supernova 1987A, and a variety of laboratory experiments. After taking these constraints into account, we find that the vast majority of the parameter space capable of generating the observed 21-cm signal is ruled out. The only viable models are those in which a small fraction, ~0.3%–2%, of the dark matter consists of particles with a mass of ~10–80 MeV and which couple to the photon through a small electric charge, roughly 10–6–10–4 as large as the electron charge. Furthermore, in order to avoid being overproduced in the early Universe, such models must be supplemented with an additional depletion mechanism, such as annihilations through a Lμ–Lτ gauge boson or annihilations to a pair of rapidly decaying hidden sector scalars.
- Authors:
- Publication Date:
- Research Org.:
- SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- OSTI Identifier:
- 1458596
- Alternate Identifier(s):
- OSTI ID: 1437302
- Report Number(s):
- arXiv:1803.02804; FERMILAB-PUB-18-066-A
Journal ID: ISSN 0031-9007; PRLTAO; 011102
- Grant/Contract Number:
- AC02-76SF00515; AC02-07CH11359
- Resource Type:
- Published Article
- Journal Name:
- Physical Review Letters
- Additional Journal Information:
- Journal Name: Physical Review Letters Journal Volume: 121 Journal Issue: 1; Journal ID: ISSN 0031-9007
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 79 ASTRONOMY AND ASTROPHYSICS; 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
Citation Formats
Berlin, Asher, Hooper, Dan, Krnjaic, Gordan, and McDermott, Samuel D. Severely Constraining Dark-Matter Interpretations of the 21-cm Anomaly. United States: N. p., 2018.
Web. doi:10.1103/PhysRevLett.121.011102.
Berlin, Asher, Hooper, Dan, Krnjaic, Gordan, & McDermott, Samuel D. Severely Constraining Dark-Matter Interpretations of the 21-cm Anomaly. United States. https://doi.org/10.1103/PhysRevLett.121.011102
Berlin, Asher, Hooper, Dan, Krnjaic, Gordan, and McDermott, Samuel D. Mon .
"Severely Constraining Dark-Matter Interpretations of the 21-cm Anomaly". United States. https://doi.org/10.1103/PhysRevLett.121.011102.
@article{osti_1458596,
title = {Severely Constraining Dark-Matter Interpretations of the 21-cm Anomaly},
author = {Berlin, Asher and Hooper, Dan and Krnjaic, Gordan and McDermott, Samuel D.},
abstractNote = {Here, the EDGES Collaboration has recently reported the detection of a stronger-than-expected absorption feature in the global 21-cm spectrum, centered at a frequency corresponding to a redshift of z≃17. This observation has been interpreted as evidence that the gas was cooled during this era as a result of scattering with dark matter. In this Letter, we explore this possibility, applying constraints from the cosmic microwave background, light element abundances, Supernova 1987A, and a variety of laboratory experiments. After taking these constraints into account, we find that the vast majority of the parameter space capable of generating the observed 21-cm signal is ruled out. The only viable models are those in which a small fraction, ~0.3%–2%, of the dark matter consists of particles with a mass of ~10–80 MeV and which couple to the photon through a small electric charge, roughly 10–6–10–4 as large as the electron charge. Furthermore, in order to avoid being overproduced in the early Universe, such models must be supplemented with an additional depletion mechanism, such as annihilations through a Lμ–Lτ gauge boson or annihilations to a pair of rapidly decaying hidden sector scalars.},
doi = {10.1103/PhysRevLett.121.011102},
journal = {Physical Review Letters},
number = 1,
volume = 121,
place = {United States},
year = {Mon Jul 02 00:00:00 EDT 2018},
month = {Mon Jul 02 00:00:00 EDT 2018}
}
https://doi.org/10.1103/PhysRevLett.121.011102
Web of Science
Figures / Tables:
Works referenced in this record:
An absorption profile centred at 78 megahertz in the sky-averaged spectrum
journal, March 2018
- Bowman, Judd D.; Rogers, Alan E. E.; Monsalve, Raul A.
- Nature, Vol. 555, Issue 7694
Possible interaction between baryons and dark-matter particles revealed by the first stars
journal, March 2018
- Barkana, Rennan
- Nature, Vol. 555, Issue 7694
Constraints on millicharged particles from Planck data
journal, December 2013
- Dolgov, A. D.; Dubovsky, S. L.; Rubtsov, G. I.
- Physical Review D, Vol. 88, Issue 11
New- phenomenology
journal, January 1991
- He, X. -G.; Joshi, G. C.; Lew, H.
- Physical Review D, Vol. 43, Issue 1
Big bang nucleosynthesis: Present status
journal, February 2016
- Cyburt, Richard H.; Fields, Brian D.; Olive, Keith A.
- Reviews of Modern Physics, Vol. 88, Issue 1
( g − 2) μ and α( M 2 Z ) re-evaluated using new precise data
journal, June 2011
- Hagiwara, Kaoru; Liao, Ruofan; Martin, Alan D.
- Journal of Physics G: Nuclear and Particle Physics, Vol. 38, Issue 8
Search for Millicharged Particles at SLAC
journal, August 1998
- Prinz, A. A.; Baggs, R.; Ballam, J.
- Physical Review Letters, Vol. 81, Issue 6
Muon anomalous and gauged models
journal, August 2001
- Baek, S.; Deshpande, N. G.; He, X. -G.
- Physical Review D, Vol. 64, Issue 5
BBN and the CMB constrain neutrino coupled light WIMPs
journal, April 2015
- Nollett, Kenneth M.; Steigman, Gary
- Physical Review D, Vol. 91, Issue 8
Final report of the E821 muon anomalous magnetic moment measurement at BNL
journal, April 2006
- Bennett, G. W.; Bousquet, B.; Brown, H. N.
- Physical Review D, Vol. 73, Issue 7
Constraining light dark matter with low-energy e+e− colliders
journal, November 2013
- Essig, Rouven; Mardon, Jeremy; Papucci, Michele
- Journal of High Energy Physics, Vol. 2013, Issue 11
Reopening the window on charged dark matter
journal, July 2009
- Chuzhoy, Leonid; Kolb, Edward W.
- Journal of Cosmology and Astroparticle Physics, Vol. 2009, Issue 07
Planck 2015 results : XIII. Cosmological parameters
journal, September 2016
- Ade, P. A. R.; Aghanim, N.; Arnaud, M.
- Astronomy & Astrophysics, Vol. 594
Neutrino tridents and W - Z interference
journal, June 1991
- Mishra, S. R.; Rabinowitz, S. A.; Arroyo, C.
- Physical Review Letters, Vol. 66, Issue 24
New light species and the CMB
journal, December 2013
- Brust, Christopher; Kaplan, David E.; Walters, Matthew T.
- Journal of High Energy Physics, Vol. 2013, Issue 12
Muon and searches for a new leptophobic sub-GeV dark boson in a missing-energy experiment at CERN
journal, May 2015
- Gninenko, S. N.; Krasnikov, N. V.; Matveev, V. A.
- Physical Review D, Vol. 91, Issue 9
Self-interacting dark matter
journal, October 1992
- Carlson, Eric D.; Machacek, Marie E.; Hall, Lawrence J.
- The Astrophysical Journal, Vol. 398
Precise relic WIMP abundance and its impact on searches for dark matter annihilation
journal, July 2012
- Steigman, Gary; Dasgupta, Basudeb; Beacom, John F.
- Physical Review D, Vol. 86, Issue 2
Search for Invisible Decays of a Dark Photon Produced in Collisions at BaBar
journal, September 2017
- Lees, J. P.; Poireau, V.; Tisserand, V.
- Physical Review Letters, Vol. 119, Issue 13
Turning off the lights: How dark is dark matter?
journal, March 2011
- McDermott, Samuel D.; Yu, Hai-Bo; Zurek, Kathryn M.
- Physical Review D, Vol. 83, Issue 6
Constraining Baryon–Dark-Matter Scattering with the Cosmic Dawn 21-cm Signal
journal, July 2018
- Fialkov, Anastasia; Barkana, Rennan; Cohen, Aviad
- Physical Review Letters, Vol. 121, Issue 1
Light WIMPs and Equivalent Neutrinos
journal, January 2015
- Steigman, Gary; Nollett, Kenneth M.
- Physics Procedia, Vol. 61
Search for neutral metastable penetrating particles produced in the SLAC beam dump
journal, December 1988
- Bjorken, J. D.; Ecklund, S.; Nelson, W. R.
- Physical Review D, Vol. 38, Issue 11
Neutrino Trident Production: A Powerful Probe of New Physics with Neutrino Beams
journal, August 2014
- Altmannshofer, Wolfgang; Gori, Stefania; Pospelov, Maxim
- Physical Review Letters, Vol. 113, Issue 9
Bounds on Dark-Matter Annihilations from 21-cm Data
journal, July 2018
- D’Amico, Guido; Panci, Paolo; Strumia, Alessandro
- Physical Review Letters, Vol. 121, Issue 1
Reevaluation of the hadronic contributions to the muon g−2 and to $\alpha (M^{2}_{Z})$
journal, January 2011
- Davier, M.; Hoecker, A.; Malaescu, B.
- The European Physical Journal C, Vol. 71, Issue 1
Dark matter freeze-out in a nonrelativistic sector
journal, August 2016
- Pappadopulo, Duccio; Ruderman, Joshua T.; Trevisan, Gabriele
- Physical Review D, Vol. 94, Issue 3
A precision calculation of the effective number of cosmological neutrinos
journal, May 2002
- Mangano, G.; Miele, G.; Pastor, S.
- Physics Letters B, Vol. 534, Issue 1-4
Updated bounds on milli-charged particles
journal, May 2000
- Davidson, Sacha; Hannestad, Steen; Raffelt, Georg
- Journal of High Energy Physics, Vol. 2000, Issue 05
Secluded U(1) below the weak scale
journal, November 2009
- Pospelov, Maxim
- Physical Review D, Vol. 80, Issue 9
New electron beam-dump experiments to search for MeV to few-GeV dark matter
journal, December 2013
- Izaguirre, Eder; Krnjaic, Gordan; Schuster, Philip
- Physical Review D, Vol. 88, Issue 11
Charting the parameter space of the global 21-cm signal
journal, August 2017
- Cohen, Aviad; Fialkov, Anastasia; Barkana, Rennan
- Monthly Notices of the Royal Astronomical Society, Vol. 472, Issue 2
Dark radiation constraints on minicharged particles in models with a hidden photon
journal, February 2014
- Vogel, Hendrik; Redondo, Javier
- Journal of Cosmology and Astroparticle Physics, Vol. 2014, Issue 02
Tests of the Gravitational Inverse-Square Law below the Dark-Energy Length Scale
journal, January 2007
- Kapner, D. J.; Cook, T. S.; Adelberger, E. G.
- Physical Review Letters, Vol. 98, Issue 2
Constraining dark matter-baryon scattering with linear cosmology
journal, January 2014
- Dvorkin, Cora; Blum, Kfir; Kamionkowski, Marc
- Physical Review D, Vol. 89, Issue 2
A lower bound on the mass of cold thermal dark matter from Planck
journal, August 2013
- Bœhm, Céline; Dolan, Matthew J.; McCabe, Christopher
- Journal of Cosmology and Astroparticle Physics, Vol. 2013, Issue 08
Heating of baryons due to scattering with dark matter during the dark ages
journal, October 2015
- Muñoz, Julian B.; Kovetz, Ely D.; Ali-Haïmoud, Yacine
- Physical Review D, Vol. 92, Issue 8
Erratum to: Reevaluation of the hadronic contributions to the muon g−2 and to $\alpha(M_{Z}^{2})$
journal, February 2012
- Davier, M.; Hoecker, A.; Malaescu, B.
- The European Physical Journal C, Vol. 72, Issue 2
Probing light thermal dark matter with a Higgs portal mediator
journal, October 2016
- Krnjaic, Gordan
- Physical Review D, Vol. 94, Issue 7
Effects of dark matter-baryon scattering on redshifted 21 cm signals
journal, October 2014
- Tashiro, Hiroyuki; Kadota, Kenji; Silk, Joseph
- Physical Review D, Vol. 90, Issue 8
Analyzing the Discovery Potential for Light Dark Matter
journal, December 2015
- Izaguirre, Eder; Krnjaic, Gordan; Schuster, Philip
- Physical Review Letters, Vol. 115, Issue 25
The muon g−2
journal, June 2009
- Jegerlehner, Fred; Nyffeler, Andreas
- Physics Reports, Vol. 477, Issue 1-3
Testing GeV-scale dark matter with fixed-target missing momentum experiments
journal, May 2015
- Izaguirre, Eder; Krnjaic, Gordan; Schuster, Philip
- Physical Review D, Vol. 91, Issue 9
Indirect dark matter signatures in the cosmic dark ages. I. Generalizing the bound on -wave dark matter annihilation from Planck results
journal, January 2016
- Slatyer, Tracy R.
- Physical Review D, Vol. 93, Issue 2
Model for Thermal Relic Dark Matter of Strongly Interacting Massive Particles
journal, July 2015
- Hochberg, Yonit; Kuflik, Eric; Murayama, Hitoshi
- Physical Review Letters, Vol. 115, Issue 2
Particle-Physics Implications of a Recent Test of the Gravitational Inverse-Square Law
journal, March 2007
- Adelberger, E. G.; Heckel, B. R.; Hoedl, S.
- Physical Review Letters, Vol. 98, Issue 13
Simplest model
journal, October 1991
- He, Xiao-Gang; Joshi, G. C.; Lew, H.
- Physical Review D, Vol. 44, Issue 7
INTERPRETING THE GLOBAL 21-cm SIGNAL FROM HIGH REDSHIFTS. II. PARAMETER ESTIMATION FOR MODELS OF GALAXY FORMATION
journal, October 2015
- Mirocha, Jordan; Harker, Geraint J. A.; Burns, Jack O.
- The Astrophysical Journal, Vol. 813, Issue 1
Narrowing the window for millicharged particles by CMB anisotropy
journal, January 2004
- Dubovsky, S. L.; Gorbunov, D. S.; Rubtsov, G. I.
- Journal of Experimental and Theoretical Physics Letters, Vol. 79, Issue 1
Stueckelberg extension with kinetic mixing and millicharged dark matter from the hidden sector
journal, June 2007
- Feldman, Daniel; Liu, Zuowei; Nath, Pran
- Physical Review D, Vol. 75, Issue 11