Mass bounds on a very light neutralino

2009/01/31 by H. K. Dreiner, Herbi K. Dreiner, S. Heinemeyer +9 · 6 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Collider #Focus (optics) #Gaugino #Massless particle #Neutralino #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #Standard Model (mathematical formulation) #Supersymmetry #hep-ph

paper · pdf · doi:10.1140/epjc/s10052-009-1042-y

published as Eur.Phys.J.C62:547-572,2009 · 36 pages, 13 figures, minor modification in astro-physical bounds. EPJC version

openalex publication_date 2009/05/26 · arxiv created 2009/09/01 · arxiv updated 2010/04/23 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

Within the Minimal Supersymmetric Standard Model (MSSM) we systematically investigate the bounds on the mass of the lightest neutralino. We allow for non-universal gaugino masses and thus even consider massless neutralinos, while assuming in general that R -parity is conserved. Our main focus is on laboratory constraints. We consider collider data, precision observables, and also rare meson decays to very light neutralinos. We then discuss the astrophysical and cosmological implications. We find that a massless neutralino is allowed by all existing experimental data and astrophysical and cosmological observations.

Citations

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Cited by

• R-parity violation at the LHC
• Precise predictions for Higgs production in neutralino decays in the complex MSSM
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• Understanding the muon anomalous magnetic moment in light of a flavor symmetry-based Minimal Supersymmetric Standard Model
• Discussing direct search of dark matter particles in the minimal supersymmetric extension of the standard model with light neutralinos
• A global fit of the MSSM with GAMBIT