Gluino Annihilations and Neutralino Dark Matter

Abstract

We consider supersymmetric scenarios, compatible with all cosmological and phenomenological requirements, where the lightest SUSY particles (LSPs) are the neutralino and a quasi degenerate gluino. We study the neutralino relic abundance, focusing on gluino (co-)annihilation effects. In case the neutralino is bino-like, in a wide mass window the relic abundance is naturally driven in the correct range for the LSP to be the main cold dark matter constituent. We show that the gluino is the strongest possible coannihilating partner of a bino-like neutralino in the general MSSM. Moreover, contrary to other coannihilation scenarios, gluino pair annihilations always dominate over coannihilation processes, even at relatively large gluino-neutralino mass splittings. Finally, we present prospects for neutralino dark matter detection in the outlined framework.

13 pages, 6 figures; v4: one figure added, discussion enlarged; final version to appear in Phys. Rev. D

References in corpus (33)

• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Determination of Cosmological Parameters
• Neutralino Relic Density including Coannihilations
• Largest temperature of the radiation era and its cosmological implications
• Sensitivity of the IceCube Detector to Astrophysical Sources of High Energy Muon Neutrinos
• Supersymmetric Dark Matter in Light of WMAP
• Re-Evaluation of the Elastic Scattering of Supersymmetric Dark Matter
• Neutralino-Stau Coannihilation and the Cosmological Upper Limit on the Mass of the Lightest Supersymmetric Particle
• Dark Matter Detection in the Light of Recent Experimental Results
• Light Scalar Top Quarks and Supersymmetric Dark Matter
• Exploration of the MSSM with Non-Universal Higgs Masses
• Quintessence and the Relic Density of Neutralinos
• A Heavy Gluino as the Lightest Supersymmetric Particle
• Updated Reach of the CERN LHC and Constraints from Relic Density, b->s gamma and a(mu) in the mSUGRA Model
• A Non-Standard String/SUSY Scenario and its Phenomenological Implications
• SUSY Dark Matter and Quintessence
• Accurate relic densities with neutralino, chargino and sfermion coannihilations in mSUGRA
• Neutralino relic density in a Universe with a non-vanishing cosmological constant
• Neutralino Dark Matter, b-tau Yukawa Unification and Non-Universal Sfermion Masses
• Higgsino Dark Matter in a SUGRA Model with Nonuniversal Gaugino Masses
• Quintessential Enhancement of Dark Matter Abundance
• Gauge-mediated SUSY Breaking with a Gluino LSP
• An analysis of a Heavy Gluino LSP at CDF : The Heavy Gluino Window
• The Phenomenology of SUSY models with a Gluino LSP
• DarkSUSY - A numerical package for supersymmetric dark matter calculations
• Possible manifestation of heavy stable colored particles in cosmology and cosmic rays
• XENON: a 1 tonne Liquid Xenon Experiment for a Sensitive Dark Matter Search
• Direct Detection of WIMP Dark Matter
• LIGHT PHOTINOS AS DARK MATTER
• micrOMEGAs: recent developments
• A solution to the mu problem in the presence of a heavy gluino LSP
• On the relic abundance of light photinos
• Extended coannihilations from non universal sfermion masses
• Radiative Gaugino Masses

Cited by in corpus (54)

• WIMP dark matter candidates and searches - current status and future prospects
• Dark Matter and Collider Phenomenology of Universal Extra Dimensions
• Dark Matter through the Higgs portal
• The Hunt for New Physics at the Large Hadron Collider
• TeV gamma-rays and the largest masses and annihilation cross sections of neutralino dark matter
• A Statistical Analysis of Supersymmetric Dark Matter in the MSSM after WMAP
• Towards the Final Word on Neutralino Dark Matter
• Exploring the BWCA (Bino-Wino Co-Annihilation) Scenario for Neutralino Dark Matter
• The MSSM with heavy scalars
• Gluino Coannihilation Revisited
• The Case for an EeV Gravitino
• Gluino NLSP, Dark Matter via Gluino Coannihilation, and LHC Signatures
• Yukawa Unification and Neutralino Dark Matter in SU(4)_c \times SU(2)_L \times SU(2)_R
• Effects of QCD bound states on dark matter relic abundance
• Scenarios for Gluino Coannihilation
• Gaugino coannihilations
• Low Mass Gluino within the Sparticle Landscape, Implications for Dark Matter, and Early Discovery Prospects at LHC-7
• NLSP Gluino and NLSP Stop Scenarios from b-tau Yukawa Unification
• Singlet-Doublet Dirac Dark Matter
• Coannihilation Scenarios and Particle Spectroscopy in SU(4)_c x SU(2)_L x SU(2)_R
• Compressed SUSY at 14 TeV LHC
• Stop Coannihilation in the CMSSM and SubGUT Models
• Detecting light stop pairs in coannihilation scenarios at the LHC
• Prospects for Higgs- and Z-resonant Neutralino Dark Matter
• Probing bino-wino coannihilation dark matter under the neutrino floor at the LHC
• SO(10) Yukawa Unification with mu < 0
• Universality in Pure Gravity Mediation with Vector Multiplets
• Likelihood Analysis of the Sub-GUT MSSM in Light of LHC 13-TeV Data
• Reaching for Squarks and Gauginos at a 100 TeV p-p Collider
• A Minimal SU(5) SuperGUT in Pure Gravity Mediation
• LHC Constraints on NLSP Gluino and Dark Matter Neutralino in Yukawa Unified Models
• Gluino Coannihilation and Observability of Gluinos at LHC RUN II
• Cornering Compressed Gluino at the LHC
• Probing SUSY beyond the reach of LEP2 at the Fermilab Tevatron: low |M_3| dark matter models
• Searching for NLSP Sbottom at the LHC
• On the coverage of neutralino dark matter in coannihilations at the upgraded LHC
• Vacuum stability in stau-neutralino coannihilation in MSSM
• Searching for Metastable Particles with Sub-Millimeter Displaced Vertices at Hadron Colliders
• Testing Yukawa Unification at LHC Run-3 and HL-LHC
• Muon $g-2$ in Split-Family SUSY in light of LHC Run II
• Phenomenological profile of scotogenic fermionic dark matter
• Soft gluon resummation for associated gluino-gaugino production at the LHC
• Indirect Searches of the Degenerate MSSM
• Gravitino dark matter from gluino late decay in split supersymmetry
• Dark Matter, Sparticle Spectroscopy and Muon $(g-2)$ in $SU(4{)}_c\times SU(2{)}_L\times SU(2{)}_R$
• Superparticle Signatures: from PAMELA to the LHC
• Revealing the jet substructure in a compressed spectrum
• A Very Heavy Sneutrino as Viable Thermal Dark Matter Candidate in $U(1{)}^{\prime }$ Extensions of the MSSM
• Extending the Reach of Compressed Gluinos at the LHC
• Probing Bino-Gluino Coannihilation at the LHC
• LHC Run-3, $b-\tau$ Yukawa Unification and Dark Matter Implications in SUSY 4-2-2 model
• Monojet signatures from gluino and squark decays
• Decoding the Origin of Dark Matter
• Revisiting the gluino mass limits in the pMSSM in the light of the latest LHC data and Dark Matter constraints