Heavy Dark Baryons at Large N: Self-Interactions across All Scales
hep-ph, astro-ph.CO
Submitted: 2026-09-30
Updated: 2026-09-30
Comments: 10 pages, 5 figures
License: http://creativecommons.org/licenses/by/4.0/
The gist: We show that heavy dark baryons in a confining SU(N) sector with a moderately large number of colors, N about10 -- 100, can generate self-interactions spanning the full range of astrophysical
Terminology
Abstract
We show that heavy dark baryons in a confining SU(N) sector with a moderately large number of colors, N about10 -- 100, can generate self-interactions spanning the full range of astrophysical velocities. Their chromo-electric polarizability induces van der Waals interactions that yield σ/m DM about30 - 100 cm 2/g at dwarf-galaxy velocities, decrease to the values required by galaxy clusters, and rise to 100 - 1000 cm 2/g at velocities of a few km/s, as suggested by the second perturber of JVAS B1938+666. Remarkably, for a given ratio m Q/Λ d, these observations can be used to infer the value of N. The resulting self-interaction phenomenology favors GeV-scale dark baryons, independently of the relic-abundance requirement. At these masses, a dark baryon asymmetry comparable to the visible one can account for the observed dark-matter abundance.
Sources
- Observational evidence for self-interacting cold dark matter
- Dark Matter Self-interactions and Small Scale Structure
- Small-Scale Challenges to the $\Lambda$CDM Paradigm
- The diverse dark matter density at sub-kiloparsec scales in Milky Way satellites:implications for the nature of dark matter
- Constraining Velocity-dependent Self-Interacting Dark Matter with the Milky Way's dwarf spheroidal galaxies
- TangoSIDM: Tantalizing models of Self-Interacting Dark Matter
- Gravothermal collapse and the diversity of galactic rotation curves
- Resonant or asymmetric: The status of sub-GeV dark matter
- A million-solar-mass object detected at cosmological distance using gravitational imaging
- A possible challenge for Cold and Warm Dark Matter
- SIDM and CDM interpretations of the million-solar-mass lensing perturber JVAS B1938+666- V
- Long-Range Forces of QCD
- SIMPle Dark Matter: Self-Interactions and keV Lines
- Self-Interacting Dark Matter from a Non-Abelian Hidden Sector
- Interglueball potential in SU(N) lattice gauge theory
- Glueball scattering cross section in lattice SU(2) Yang-Mills theory
- Self-interacting dark baryons
- Dark matter in QCD-like theories with a theta vacuum: cosmological and astrophysical implications
- Dark Neutrons as Dark Matter: Collisions in Halos and Direct Detection from Dark CP Violation
- Two coincidences are a clue: Probing a GeV-scale dark QCD sector
Related papers
- Classification of g-modes for neutron stars with a strong transition: Novel universal relation including slow stable hybrid stars
- Higgsino Dark Matter Interpretation of the LUX-ZEPLIN 248 keV Nuclear-Recoil Event
- A Unified Bogoliubov Approach to Primordial Gravitational Waves: From Inflation to Reheating
- Probing Memory-Burdened Primordial Black Holes with High-Energy Neutrinos
- Enhanced Dark Matter Quantum Sensing via Phase-Space Geometric Interferometry
- Axions as Dark Matter, Dark Energy, and Dark Radiation