Electroweak resummation of neutralino dark-matter annihilation into high-energy photons

Abstract

We consider the resummation of large electroweak Sudakov logarithms for the annihilation of neutralino DM with $\mathcal{O}$(TeV) mass to high-energy photons in the minimal supersymmetric standard model, extending previous work on the minimal wino and Higgsino models. We find that NLL resummation reduces the yield of photons by about $20\%$ for Higgsino-dominated DM at masses around 1~TeV, and up to $45\%$ for neutralinos with larger wino admixture at heavier masses near 3~TeV. This sizable effect is relevant when observations or exclusion limits are translated into MSSM parameter-space constraints.

arXiv comment31 pages, 3 figures

References in corpus (32)

• Supersymmetric Dark Matter
• A Supersymmetry Primer
• A Theory of Dark Matter
• An effective field theory for collinear and soft gluons: heavy to light decays
• Soft-Collinear Factorization in Effective Field Theory
• The Anatomy of Electro-Weak Symmetry Breaking. II: The Higgs bosons in the Minimal Supersymmetric Model
• The Waning of the WIMP? A Review of Models, Searches, and Constraints
• Precise Relic WIMP Abundance and its Impact on Searches for Dark Matter Annihilation
• Soft-collinear effective theory and heavy-to-light currents beyond leading power
• WIMP dark matter candidates and searches - current status and future prospects
• Non-Perturbative Effect on Dark Matter Annihilation and Gamma Ray Signature from Galactic Center
• The Well-Tempered Neutralino
• Explosive Dark Matter Annihilation
• Multipole-expanded soft-collinear effective theory with non-abelian gauge symmetry
• Science with the Cherenkov Telescope Array
• Soft radiation in heavy-particle pair production: all-order colour structure and two-loop anomalous dimension
• Relic densities including Sommerfeld enhancements in the MSSM
• Precision calculations in the MSSM Higgs-boson sector with FeynHiggs 2.14
• Recasting direct detection limits within micrOMEGAs and implication for non-standard Dark Matter scenarios
• Combined collider constraints on neutralinos and charginos
• Heavy Dark Matter Annihilation from Effective Field Theory
• Relic density of wino-like dark matter in the MSSM
• On the Annihilation Rate of WIMPs
• Soft Collinear Effective Theory for Heavy WIMP Annihilation
• Resummed Photon Spectra for WIMP Annihilation
• The last refuge of mixed wino-Higgsino dark matter
• Non-relativistic pair annihilation of nearly mass degenerate neutralinos and charginos II. P-wave and next-to-next-to-leading order S-wave coefficients
• GAMBIT and its Application in the Search for Physics Beyond the Standard Model
• Testing dark matter with Cherenkov light -- prospects of H.E.S.S. and CTA for exploring minimal supersymmetry
• Wino potential and Sommerfeld effect at NLO
• Precise yield of high-energy photons from Higgsino dark matter annihilation
• Sommerfeld enhancement of resonant dark matter annihilation