Neutralino annihilation toqq¯g

2006/08/31 by V. Barger, Vernon Barger, Wai-Yee Keung +2
Chemistry · Mathematics · Physics and Astronomy · #Annihilation #Chemistry #Combinatorics #Crystallography #Dark Matter and Cosmic Phenomena #Mathematics #Neutralino #Order (exchange) #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Supersymmetry #hep-ph

paper · pdf · doi:10.1103/physrevd.74.075005

published as Phys.Rev.D74:075005,2006 · 13 pages, 1 figure; v2: refs added; v3: version to appear in PRD

arxiv created 2006/10/10 · openalex publication_date 2006/10/16 · arxiv updated 2009/12/01 · openalex created_date 2021/04/13 · openalex updated_date 2026/08/05

Abstract

We compute the cross section for \ensuremathχ\ensuremathχ\ensuremath→qqg at order \ensuremathα_s²/M_\stackrel\texttildelowq⁶ arising from interference between the tree-level and loop-induced processes. This interference term is the same order in \ensuremathα_s as \ensuremathχ\ensuremathχ\ensuremath→gg; for mass degenerate squarks M_\stackrel\texttildelowq_R=M_\stackrel\texttildelowq_L=M_\stackrel\texttildelowq we find v_rel\ensuremathσ_int=[\ensuremath-2m_\ensuremathχ²/3M_\stackrel\texttildelowq²]v_rel\ensuremathσ(\ensuremathχ\ensuremathχ\ensuremath→gg).

Citations

• QCD correction to neutralino annihilation process and dark matter density in supersymmetric models
• Degenerate Systems and Mass Singularities
• Particle dark matter: evidence, candidates and constraints
• Neutralino-neutralino annihilation to photon and gluon pairs in MSSM models