Relic densities including Sommerfeld enhancements in the MSSM

Abstract

We have developed a general formalism to compute Sommerfeld enhancement (SE) factors for a multi-state system of fermions, in all possible spin configurations and with generic long-range interactions. We show how to include such SE effects in an accurate calculation of the thermal relic density for WIMP dark matter candidates. We apply the method to the MSSM and perform a numerical study of the relic abundance of neutralinos with arbitrary composition and including the SE due to the exchange of the W and Z bosons, photons and Higgses. We find that the relic density can be suppressed by a factor of a few in a seizable region of the parameter space, mostly for Wino-like neutralino with mass of a few TeV, and up to an order of magnitude close to a resonance.

23 pages, 7 figures; table 1 corrected and rearranged, numerical results practically unchanged, matches published version

References in corpus (7)

• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• Observation of an anomalous positron abundance in the cosmic radiation
• A Theory of Dark Matter
• Cosmology and Astrophysics of Minimal Dark Matter
• Non-perturbative Effect on Thermal Relic Abundance of Dark Matter
• Heavy Dark Matter Through the Higgs Portal
• An integral equation for distorted wave amplitudes

Cited by in corpus (35)

• Bound-state formation for thermal relic dark matter and unitarity
• GUT-inspired SUSY and the muon g-2 anomaly: prospects for LHC 14 TeV
• Prospects for dark matter searches in the pMSSM
• Soft Collinear Effective Theory for Heavy WIMP Annihilation
• The Relic Neutralino Surface at a 100 TeV collider
• Effects of QCD bound states on dark matter relic abundance
• The Waning of the WIMP: Endgame?
• Complementarity of Dark Matter Searches in the pMSSM
• Protophobic Light Vector Boson as a Mediator to the Dark Sector
• Neutralino and gravitino dark matter with low reheating temperature
• Higgs-mediated bound states in dark-matter models
• Shining Primordial Black Holes
• Toward the ultimate reach of current imaging atmospheric Cherenkov telescopes and their sensitivity to TeV dark matter
• Dark Matter Line Searches with the Cherenkov Telescope Array
• Robustness of dark matter constraints and interplay with collider searches for New Physics
• Squark-pair annihilation into quarks at next-to-leading order
• Higgsino Dark Matter in Pure Gravity Mediated Supersymmetry
• Minimal Asymmetric Dark Matter
• The Sommerfeld Enhancement in the Scotogenic Model with Large Electroweak Scalar Multiplets
• Thermal Relic of Self-Interacting Dark Matter with Retarded Decay of Mediator
• Enhanced One-Loop Corrections to WIMP Annihilation and their Thermal Relic Density in the Coannihilation Region
• The hMSSM with a Light Gaugino/Higgsino Sector: Implications for Collider and Astroparticle Physics
• Discovery potential for split supersymmetry with thermal dark matter
• Saas-Fee Lecture Notes: Multi-messenger Astronomy and Dark Matter
• Electroweak resummation of neutralino dark-matter annihilation into high-energy photons
• Non-relativistic pair annihilation of nearly mass degenerate neutralinos and charginos III. Computation of the Sommerfeld enhancements
• Heavy neutralino relic abundance with Sommerfeld enhancements - a study of pMSSM scenarios
• Dark matter signals at the LHC: forecasts from ton-scale direct detection experiments
• Non-relativistic high-energy physics: top production and dark matter annihilation
• New SUSY Fits for the ILC and CLIC
• The Forward Physics Facility at the High-Luminosity LHC
• Analogies between nuclear physics and Dark Matter
• Search for gamma-ray spectral lines from dark matter annihilation with the H.E.S.S. Inner Galaxy Survey
• Lower bound for the ratio of charged wino tracks to charged lepton tracks at LHC
• Cosmological Kinetic Mixing