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Title: Astrophysical probes of inelastic dark matter with a light mediator

Journal Article · · Physical Review D

We consider an inelastic dark matter model, in which a fermion is charged under a broken U(1) gauge symmetry, and introduce a tiny Majorana mass term to split the fermion into two states with the light one being a dark matter candidate. If the gauge boson is light, it can mediate both elastic and inelastic dark matter self-interactions in dark halos, leading to observational consequences. Using a numerical technique based on partial wave analysis, we accurately calculate the elastic and inelastic self-scattering cross sections. We assume a thermal freeze-out scenario and fix the gauge coupling constant using the relic density constraint. Then, we focus on six benchmark masses of dark matter, covering a wide range from 10 MeV to 160 GeV and map parameter regions where the elastic scattering cross section per unit mass is within 1 cm2/g ₋ 5 cm2/g, favored to solve small-scale issues of cold dark matter. If the heavy state can decay to the light state and a massless species, the inelastic up-scattering process can cool the halo and lead to core collapse. Taking galaxies with evidence of dark matter density cores, we further derive constraints on the parameter space. For dark matter masses below 10 GeV, the mass splitting must be large enough to forbid up scattering in the dwarf halo for evading the core-collapse constraint; while for higher masses, the up-scattering process can still be allowed. Our results show astrophysical observations can provide powerful tests for dark matter models with large elastic and inelastic self-interactions.

Research Organization:
Univ. of California, Riverside, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
de-sc0008541; SC0008541
OSTI ID:
1598072
Alternate ID(s):
OSTI ID: 1801829
Journal Information:
Physical Review D, Journal Name: Physical Review D Vol. 101 Journal Issue: 4; ISSN 2470-0010
Publisher:
American Physical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 6 works
Citation information provided by
Web of Science

References (59)

Subhaloes in self-interacting galactic dark matter haloes: Self-interacting galactic dark matter haloes journal May 2012
Diversity in density profiles of self-interacting dark matter satellite halos journal December 2019
Galaxies in Λcdm with halo Abundance Matching: Luminosity-Velocity Relation, Baryonic Mass-Velocity Relation, Velocity Function, and Clustering journal November 2011
Direct detection portals for self-interacting dark matter journal February 2014
Beyond collisionless dark matter: Particle physics dynamics for dark matter halo structure journal June 2013
Inelastic dark matter journal July 2001
Cores in Dwarf Galaxies from Dark Matter with a Yukawa Potential journal April 2011
New dissipation mechanisms from multilevel dark matter scattering journal January 2018
Dissipative hidden sector dark matter journal January 2015
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
A theory of dark matter journal January 2009
The Density Profiles of Massive, Relaxed Galaxy Clusters. ii. Separating Luminous and dark Matter in Cluster Cores journal February 2013
Self-interacting inelastic dark matter: a viable solution to the small scale structure problems journal March 2017
Secluded WIMP dark matter journal April 2008
Halo Properties in Cosmological Simulations of Self‐interacting Cold Dark Matter journal February 2001
Atomic dark matter journal May 2010
Direct detection signatures of self-interacting dark matter with a light mediator journal October 2015
Constraining Dark Matter Models with a Light Mediator at the PandaX-II Experiment journal July 2018
Mirror matter as self-interacting dark matter journal September 2002
Direct detection of multicomponent secluded WIMPs journal June 2009
Self-interacting dark matter without direct detection constraints journal March 2017
Spreading out and staying sharp – creating diverse rotation curves via baryonic and self-interaction effects journal March 2017
Displaced lepton jet signatures from self-interacting dark matter bound states journal August 2019
Cosmological simulations with self-interacting dark matter – I. Constant-density cores and substructure journal January 2013
Planck 2015 results : XIII. Cosmological parameters journal September 2016
Scattering properties of dark atoms and molecules journal February 2014
Light asymmetric dark matter from new strong dynamics journal September 2011
Early formation of supermassive black holes via dark matter self-interactions journal July 2019
Self-scattering for Dark Matter with an excited state journal January 2015
Asymmetric Dark Matter and the Sun journal July 2010
Hidden sector hydrogen as dark matter: Small-scale structure formation predictions and the importance of hyperfine interactions journal December 2016
Messenger sneutrinos as cold dark matter journal December 1997
Collapsed Dark Matter Structures journal February 2018
Modified variable phase method for the solution of coupled radial Schrödinger equations journal December 2011
Simulations of core formation for frequent dark matter self-interactions journal May 2019
Constraining Dissipative Dark Matter Self-Interactions journal September 2019
Dark matter self-interactions from the internal dynamics of dwarf spheroidals journal August 2018
Thermal relics in hidden sectors journal October 2008
Too big to fail in light of Gaia journal September 2019
Results of a Search for Sub-GeV Dark Matter Using 2013 LUX Data journal April 2019
Light Dark Matter Search with Ionization Signals in XENON1T journal December 2019
Dark matter self-interactions and small scale structure journal February 2018
Scalar dark matter candidates journal April 2004
Cosmology of atomic dark matter journal May 2013
X-ray line from exciting dark matter journal October 2016
Constraining self-interacting dark matter with the Milky Way’s dwarf spheroidals journal February 2013
Halo-Shape and Relic-Density Exclusions of Sommerfeld-Enhanced Dark Matter Explanations of Cosmic Ray Excesses journal April 2010
Cosmic particle colliders: simulations of self-interacting dark matter with anisotropic scattering journal February 2017
The large-scale structure of the Universe journal April 2006
Resonant Dark Forces and Small-Scale Structure journal March 2013
Cosmological simulations with self-interacting dark matter – II. Halo shapes versus observations journal January 2013
Production of dark-matter bound states in the early universe by three-body recombination journal November 2018
Strongly interacting dark matter: Self-interactions and keV lines journal November 2014
Observational Evidence for Self-Interacting Cold Dark Matter journal April 2000
Reconciling the Diversity and Uniformity of Galactic Rotation Curves with Self-Interacting Dark Matter journal August 2019
Millicharged atomic dark matter journal May 2012
Exciting dark matter and the INTEGRAL/SPI 511 keV signal journal October 2007
Dark-Matter Particles without Weak-Scale Masses or Weak Interactions journal December 2008

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