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Relic densities including Sommerfeld enhancements in the MSSM

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arxiv 1010.2172 v2 pith:ICUCH7O2 submitted 2010-10-11 hep-ph

Andrzej Hryczuk , Roberto Iengo , Piero Ullio This is my paper · ORCID
classification hep-ph
keywords relicdensityincludingmssmsommerfeldabundanceaccurateapply
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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.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Higgs boson mass and thermal wino dark matter from Starobinsky supergravity with the MSSM

    hep-ph 2026-07 conditional novelty 6.0 of 10

    Starobinsky supergravity coupled to the MSSM links the CMB inflationary scale to the Higgs boson mass (~125 GeV) and predicts thermal wino dark matter at ~3 TeV, testable at future colliders and direct detection experiments.

  2. Neutralino dark matter in gauge mediation

    hep-ph 2025-02 conditional novelty 4.0 of 10

    Neutralino dark matter is viable in four scenarios within a 5D gauge mediation model with an O(100) TeV gravitino, and the allowed parameter regions are mapped against current experiments.

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