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Title: Is Self-Interacting Dark Matter Undergoing Dark Fusion?

Abstract

Here, we suggest that two-to-two dark matter fusion may be the relaxation process that resolves the small-scale structure problems of the cold collisionless dark matter paradigm. In order for the fusion cross section to scale correctly across many decades of astrophysical masses from dwarf galaxies to galaxy clusters, we require the fractional binding energy released to be greater than vn~(10–(2–3))n, where n=1, 2 depends on local dark sector chemistry. The size of the dark-sector interaction cross sections must be σ~0.1–1 barn, moderately larger than for standard model deuteron fusion, indicating a dark nuclear scale Λ~O(100 MeV). Dark fusion firmly predicts constant σv below the characteristic velocities of galaxy clusters. Observations of the inner structure of galaxy groups with velocity dispersion of several hundred kilometers per second, of which a handful have been identified, could differentiate dark fusion from a dark photon model.

Authors:
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP)
OSTI Identifier:
1439904
Alternate Identifier(s):
OSTI ID: 1410790
Report Number(s):
FERMILAB-PUB-17-483-A-T; arXiv:1711.00857
Journal ID: ISSN 0031-9007; PRLTAO; 221806
Grant/Contract Number:  
AC02-07CH11359
Resource Type:
Published Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Name: Physical Review Letters Journal Volume: 120 Journal Issue: 22; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

McDermott, Samuel D. Is Self-Interacting Dark Matter Undergoing Dark Fusion?. United States: N. p., 2018. Web. doi:10.1103/PhysRevLett.120.221806.
McDermott, Samuel D. Is Self-Interacting Dark Matter Undergoing Dark Fusion?. United States. doi:10.1103/PhysRevLett.120.221806.
McDermott, Samuel D. Fri . "Is Self-Interacting Dark Matter Undergoing Dark Fusion?". United States. doi:10.1103/PhysRevLett.120.221806.
@article{osti_1439904,
title = {Is Self-Interacting Dark Matter Undergoing Dark Fusion?},
author = {McDermott, Samuel D.},
abstractNote = {Here, we suggest that two-to-two dark matter fusion may be the relaxation process that resolves the small-scale structure problems of the cold collisionless dark matter paradigm. In order for the fusion cross section to scale correctly across many decades of astrophysical masses from dwarf galaxies to galaxy clusters, we require the fractional binding energy released to be greater than vn~(10–(2–3))n, where n=1, 2 depends on local dark sector chemistry. The size of the dark-sector interaction cross sections must be σ~0.1–1 barn, moderately larger than for standard model deuteron fusion, indicating a dark nuclear scale Λ~O(100 MeV). Dark fusion firmly predicts constant σv below the characteristic velocities of galaxy clusters. Observations of the inner structure of galaxy groups with velocity dispersion of several hundred kilometers per second, of which a handful have been identified, could differentiate dark fusion from a dark photon model.},
doi = {10.1103/PhysRevLett.120.221806},
journal = {Physical Review Letters},
number = 22,
volume = 120,
place = {United States},
year = {2018},
month = {6}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1103/PhysRevLett.120.221806

Citation Metrics:
Cited by: 4 works
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Works referenced in this record:

Beyond collisionless dark matter: Particle physics dynamics for dark matter halo structure
journal, June 2013


Yukawa bound states of a large number of fermions
journal, February 2015


The nongravitational interactions of dark matter in colliding galaxy clusters
journal, March 2015


Upper Bound on the Dark Matter Total Annihilation Cross Section
journal, December 2007


In the wake of dark giants: new signatures of dark matter self-interactions in equal-mass mergers of galaxy clusters
journal, April 2017

  • Kim, Stacy Y.; Peter, Annika H. G.; Wittman, David
  • Monthly Notices of the Royal Astronomical Society, Vol. 469, Issue 2
  • DOI: 10.1093/mnras/stx896

Big bang darkleosynthesis
journal, December 2015


Cosmological bounds on non-Abelian dark forces
journal, April 2018


Stable bound states of asymmetric dark matter
journal, September 2014


Higgs portal vector dark matter for GeV scale γ-ray excess from galactic center
journal, September 2014


Dark Matter Halos as Particle Colliders: Unified Solution to Small-Scale Structure Puzzles from Dwarfs to Clusters
journal, January 2016


Self-Interacting Dark Matter Can Explain Diverse Galactic Rotation Curves
journal, September 2017


Dark nuclei. II. Nuclear spectroscopy in two-color QCD
journal, December 2014


Dark matter self-interactions and small scale structure
journal, February 2018


The Effective Range of Nuclear Forces II. Photo-Disintegration of the Deuteron
journal, March 1950


Non-Abelian dark forces and the relic densities of dark glueballs
journal, January 2017


Unitarity Bounds and the Cuspy Halo Problem
journal, April 2001


Cosmological simulations of decaying dark matter: implications for small-scale structure of dark matter haloes
journal, September 2014

  • Wang, Mei-Yu; Peter, Annika H. G.; Strigari, Louis E.
  • Monthly Notices of the Royal Astronomical Society, Vol. 445, Issue 1
  • DOI: 10.1093/mnras/stu1747

Dark nuclei. I. Cosmology and indirect detection
journal, December 2014


Interpretation of the Galactic Center excess of gamma rays with heavier dark matter particles
journal, July 2014


The 2mass Redshift Survey—Description and data Release
journal, March 2012

  • Huchra, John P.; Macri, Lucas M.; Masters, Karen L.
  • The Astrophysical Journal Supplement Series, Vol. 199, Issue 2
  • DOI: 10.1088/0067-0049/199/2/26

Compressible liquid drop nuclear model and mass formula
journal, July 1977


Erratum to: Yukawa bound states of a large number of fermions
journal, October 2015


Neutron star matter
journal, November 1971


Erratum: Stable bound states of asymmetric dark matter [Phys. Rev. D 90 , 055030 (2014)]
journal, February 2015


Thermonuclear astrophysics
journal, October 1974


Annihilating Cold Dark Matter
journal, October 2000


Nuclear structure of bound states of asymmetric dark matter
journal, November 2017


Resonant Dark Forces and Small-Scale Structure
journal, March 2013


Early Universe synthesis of asymmetric dark matter nuggets
journal, February 2018


Small-Scale Challenges to the Λ CDM Paradigm
journal, August 2017


Big Bang synthesis of nuclear dark matter
journal, June 2015

  • Hardy, Edward; Lasenby, Robert; March-Russell, John
  • Journal of High Energy Physics, Vol. 2015, Issue 6
  • DOI: 10.1007/JHEP06(2015)011

Galaxy Groups Within 3500 km s −1
journal, June 2017


Exciting dark matter and the INTEGRAL/SPI 511 keV signal
journal, October 2007


Hadronic forward scattering: Predictions for the Large Hadron Collider and cosmic rays
journal, December 2006