Exploring the BWCA (Bino-Wino Co-Annihilation) Scenario for Neutralino Dark Matter

Abstract

In supersymmetric models with non-universal gaugino masses, it is possible to have opposite-sign SU(2) and U(1) gaugino mass terms. In these models, the gaugino eigenstates experience little mixing so that the lightest SUSY particle remains either pure bino or pure wino. The neutralino relic density can only be brought into accord with the WMAP measured value when bino-wino co-annihilation (BWCA) acts to enhance the dark matter annihilation rate. We map out parameter space regions and mass spectra which are characteristic of the BWCA scenario. Direct and indirect dark matter detection rates are shown to be typically very low. At collider experiments, the BWCA scenario is typified by a small mass gap m_{\tilde Z_2}-m_{\tilde Z_1} ~ 20-80 GeV, so that tree level two body decays of \tilde Z_2 are not allowed. However, in this case the second lightest neutralino has an enhanced loop decay branching fraction to photons. While the photonic neutralino decay signature looks difficult to extract at the Fermilab Tevatron, it should lead to distinctive events at the CERN LHC and at a linear e^+e^- collider.

44 pages, 21 figures

References in corpus (154)

• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Determination of Cosmological Parameters
• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Preliminary Maps and Basic Results
• Supersymmetric Dark Matter
• Out Of This World Supersymmetry Breaking
• Gaugino Mass without Singlets
• The Inner Structure of LambdaCDM Halos III: Universality and Asymptotic Slopes
• DarkSUSY: Computing Supersymmetric Dark Matter Properties Numerically
• Neutralino Relic Density including Coannihilations
• micrOMEGAs: A program for calculating the relic density in the MSSM
• Wino Cold Dark Matter from Anomaly-Mediated SUSY Breaking
• The Neutralino Relic Density in Minimal N=1 Supergravity
• Observability of Gamma Rays from Dark Matter Neutralino Annihilations in the Milky Way Halo
• CompHEP 4.4 - Automatic Computations from Lagrangians to Events
• Towards a Theory of Soft Terms for the Supersymmetric Standard Model
• Multi-TeV Scalars are Natural in Minimal Supergravity
• Naturalness, Weak Scale Supersymmetry and the Prospect for the Observation of Supersymmetry at the Tevatron and at the LHC
• Supersymmetric Dark Matter in Light of WMAP
• Re-Evaluation of the Elastic Scattering of Supersymmetric Dark Matter
• Precision SUSY Measurements at LHC
• Positron Propagation and Fluxes from Neutralino Annihilation in the Halo
• Neutralino Dark Matter in Focus Point Supersymmetry
• Calculations of Neutralino-Stau Coannihilation Channels and the Cosmologically Relevant Region of MSSM Parameter Space
• Neutralino-Stau Coannihilation and the Cosmological Upper Limit on the Mass of the Lightest Supersymmetric Particle
• ISAJET 7.37: A Monte Carlo Event Generator for $pp$, $\bar{p}p$, and $e^{+}{e}^{-}$ Interactions
• Neutralino-Nucleon Scattering Revisited
• Cosmological dark matter annihilations into gamma-rays - a closer look
• Dark Matter Detection in the Light of Recent Experimental Results
• Direct, Indirect and Collider Detection of Neutralino Dark Matter In SUSY Models with Non-universal Higgs Masses
• The MSSM Parameter Space with Non-Universal Higgs Masses
• Precision Measurement of Cosmic-Ray Antiproton Spectrum
• WMAP Constraints, SUSY Dark Matter and Implications for the Direct Detection of SUSY
• The CMSSM Parameter Space at Large tan beta
• First Results from the Cryogenic Dark Matter Search in the Soudan Underground Lab
• Anomaly-Free Gauged R-Symmetry
• Cosmological Relic Density from Minimal Supergravity with Implications for Collider Physics
• Light Scalar Top Quarks and Supersymmetric Dark Matter
• Neutralino Dark Matter in Minimal Supergravity: Direct Detection vs. Collider Searches
• Exploration of the MSSM with Non-Universal Higgs Masses
• New Cosmological and Experimental Constraints on the CMSSM
• Discovering Supersymmetry at the Tevatron in Wino LSP Scenarios
• Signals for Minimal Supergravity at the CERN Large Hadron Collider II: Multilepton Channels
• Constraints on the Minimal Supergravity Model and Prospects for SUSY Particle Production at Future Linear e^+ e^- Colliders
• Supersymmetric Cold Dark Matter with Yukawa Unification
• Yukawa Unified Supersymmetric SO(10) Model: Cosmology, Rare Decays and Collider Searches
• Improved Exclusion Limits from the EDELWEISS WIMP Search
• Measurements of Masses in SUGRA Models at LHC
• Neutralino relic density in minimal supergravity with co-annihilations
• Calculations of Neutralino-Stop Coannihilation in the CMSSM
• SIGNALS FOR MINIMAL SUPERGRAVITY AT THE CERN LARGE HADRON COLLIDER: MULTI-JET PLUS MISSING ENERGY CHANNEL,
• Supersymmetric Dark Matter and Yukawa Unification
• WMAPing out Supersymmetric Dark Matter and Phenomenology
• Predictions in SU(5) Supergravity Grand Unification with Proton Stability and Relic Density Constraints
• Updated Reach of the CERN LHC and Constraints from Relic Density, b->s gamma and a(mu) in the mSUGRA Model
• Gaugino Mass Nonuniversality and Dark Matter in SUGRA, Strings and D Brane Models
• Cosmic antiprotons as a probe for supersymmetric dark matter?
• A Non-Standard String/SUSY Scenario and its Phenomenological Implications
• Yukawa Unification, b --> s gamma and Bino-Stau Coannihilation
• Relic Density of Neutralino Dark Matter in Supergravity Models
• Coannihilation Effects in Supergravity and D-Brane Models
• Probing the supersymmetric parameter space by WIMP direct detection
• The cosmic ray positron excess and neutralino dark matter
• SO(10) grand unification in five dimensions: Proton decay and the mu problem
• Discovery potential for supersymmetry in CMS
• Relic Neutralino Densities and Detection Rates with Nonuniversal Gaugino Masses
• Implications of muon anomalous magnetic moment for supersymmetric dark matter
• Accurate relic densities with neutralino, chargino and sfermion coannihilations in mSUGRA
• Probing Minimal Supergravity at the CERN LHC for Large $\tan \beta$
• High Energy Gamma--Radiation from the Galactic Center due to Neutralino Annihilation
• TeV gamma-rays and the largest masses and annihilation cross sections of neutralino dark matter
• Some issues in soft SUSY-breaking terms from dilaton/moduli sectors
• IceCube - the next generation neutrino telescope at the South Pole
• Implications of the Pseudo-Scalar Higgs Boson in determining the Neutralino Dark Matter
• Which fraction of the measured cosmic-ray antiprotons might be due to neutralino annihilation in the galactic halo?
• Trileptons from Chargino-Neutralino Production at the CERN Large Hadron Collider
• WMAP constraints on SUGRA models with non-universal gaugino masses and prospects for direct detection
• The CRESST Dark Matter Search
• Search for Cosmic-Ray Antideuterons
• Neutralino Proton Cross Sections In Supergravity Models
• Limits on direct detection of neutralino dark matter from b -> s gamma decays
• A Statistical Analysis of Supersymmetric Dark Matter in the MSSM after WMAP
• WMAPing the Universe: Supersymmetry, Dark Matter, Dark Energy, Proton Decay and Collider Physics
• New Contribution to Coherent neutralino-Nucleus Scattering
• Model Independent Approach to Focus Point Supersymmetry: from Dark Matter to Collider Searches
• Indirect Search for Neutralino Dark Matter with High Energy Neutrinos
• A novel antimatter detector based on X-ray deexcitation of exotic atoms
• Direct Detection of Dark Matter in Supersymmetric Models
• Neutralino relic density in a Universe with a non-vanishing cosmological constant
• Collider Phenomenology for Supersymmetry at Large $tan\beta$
• The Role of Wino Content in Neutralino Dark Matter
• Neutralino Dark Matter, b-tau Yukawa Unification and Non-Universal Sfermion Masses
• Event Rates in Dark Matter Detectors For Neutralinos Including Constraints From The $b\to s\gamma$ Decay
• Neutralino Dark Matter Detection in Split Supersymmetry Scenarios
• Exploration of Elastic Scattering Rates for Supersymmetric Dark Matter
• Searching for Relic Neutralinos using Neutrino Telescopes
• Indirect signals from light neutralinos in supersymmetric models without gaugino mass unification
• Aspects of Chargino-Neutralino Production at the Tevatron Collider
• Neutralino dark matter in supergravity theories with non-universal scalar and gaugino masses
• Indirect Neutralino Detection Rates in Neutrino Telescopes
• Neutralino Dark Matter in mSUGRA: reopening the light Higgs pole window
• Supersymmetry and the positron excess in cosmic rays
• Impact of Physical Principles at Very High Energy Scales on the Superparticle Mass Spectrum
• The Role of Antimatter Searches in the Hunt for Supersymmetric Dark Matter
• The Reach of Fermilab Tevatron Upgrades for SU(5) Supergravity Models with Non-universal Gaugino Masses
• Supersymmetry and the Cosmic Ray Positron Excess
• On SUSY Dark Matter Detection with Spinless Nuclei
• Search for SUSY in (Leptons +) Jets + E_T^miss final states
• Neutralino Dark Matter beyond CMSSM Universality
• Linear Collider Capabilities for Supersymmetry in Dark Matter Allowed Regions of the mSUGRA Model
• Mixed Wino Dark Matter: Consequences for Direct, Indirect and Collider Detection
• Gluino Annihilations and Neutralino Dark Matter
• Direct Detection of Dark Matter in the MSSM with Non-Universal Higgs Masses
• Can Supersymmetry Naturally Explain the Positron Excess?
• Trilepton Signal for Supersymmetry at the Fermilab Tevatron Revisited
• Positrons from particle dark-matter annihilation in the Galactic halo: propagation Green's functions
• Cold Dark Matter detection in SUSY models at large tan(beta)
• Trilepton Signature of Minimal Supergravity at the Upgraded Tevatron
• SUSY Normal Scalar Mass Hierarchy Reconciles (g-2), b->s,gamma and Relic Density
• Supersymmetry Reach of the Tevatron via Trilepton, Like-Sign Dilepton and Dilepton plus Tau Jet Signatures
• New backgrounds in Trilepton, Dilepton and Dilepton plus Tau Jet SUSY Signals at the Tevatron
• Search for Dark Matter with GLAST
• Naturalness Reach of the Large Hadron Collider in Minimal Supergravity
• Direct and Indirect Detection of Neutralino Dark Matter In Selected Supersymmetry Breaking Scenarios
• Non-Universal Gaugino Masses in Supersymmetric SO(10)
• Supersymmetry Tests at Fermilab: A Proposal
• Trilepton Signal of Minimal Supergravity at the Tevatron Including $\tau$-lepton Contributions
• Direct Detection of Neutralino Dark Matter and the Anomalous Dipole Moment of the Muon
• Dark Matter Direct Searches and the Anomalous Magnetic Moment of Muon
• Searching for TeV dark matter by atmospheric Cerenkov techniques
• Possible Indications of a Clumpy Dark Matter Halo
• Possible Signals of Constrained Minimal Supersymmetry at a High Luminosity Fermilab Tevatron Collider
• Neutrino Indirect Detection of Neutralino Dark Matter in the CMSSM
• Yukawa coupling unification and non-universal gaugino mediation of supersymmetry breaking
• Supersymmetry Studies at Future Linear $e^{+}{e}^{-}$ Colliders
• DarkSUSY - A numerical package for supersymmetric dark matter calculations
• Combining the data of annual modulation effect in WIMP direct detection with measurements of WIMP indirect searches
• IceCube-Plus: An Ultra-High Energy Neutrino Telescope
• Viable models with non-universal gaugino mediated supersymmetry breaking
• Neutralino Decays in the Minimal Supersymmetric Standard Model
• Supersymmetry Reach of Tevatron Upgrades: A Comparative Study
• Galactic diffusion and the antiprotron signal of supersymmetric dark matter
• Reach of the Fermilab Tevatron for minimal supergravity in the region of large scalar masses
• Two Photon Background and the Reach of a Linear Collider for Supersymmetry in WMAP Favored Coannihilation Regions
• Constraining Models of New Physics in Light of Recent Experimental Results on $a_{\psi K_S}$
• Radiative Neutralino Decay in Supersymmetric Models
• Direct detection of neutralino dark matter in supergravity
• Reconciling Neutralino Relic Density with Yukawa Unified Supersymmetric Models
• High-Energy Constraints on the Direct Detection of MSSM Neutralinos
• Supersymmetry Signatures with Tau Jets at the Tevatron
• Out-going Muon Flux from Neutralino Annihilation in the Sun and the Earth in Supergravity Unification
• Dark matter and Colliders searches in the MSSM
• Indirect Evidence for the Supersymmetric Nature of Dark Matter from the Combined Data on Galactic Positrons, Antiprotons and Gamma Rays
• TASI Lectures on AstroParticle Physics
• Does Reactor Neutrino Experiment Play an Important Role in Theta_{13} of Lepton Mixing (PMNS) Matrix ?
• Supersymmetric Dark Matter 2004

Cited by in corpus (71)

• WIMP dark matter candidates and searches - current status and future prospects
• The Well-Tempered Neutralino
• Dark Matter through the Higgs portal
• Prospects and Blind Spots for Neutralino Dark Matter
• The Hunt for New Physics at the Large Hadron Collider
• Dark matter allowed scenarios for Yukawa-unified SO(10) SUSY GUTs
• Blind Spots for neutralino Dark Matter in the MSSM with an intermediate m_A
• Non-universal gaugino masses from non-singlet F-terms in non-minimal unified models
• Towards the Final Word on Neutralino Dark Matter
• Integrability of the AdS_5 x S^5 superstring and its deformations
• Target dark matter detection rates in models with a well-tempered neutralino
• The Electroweak Sector of the pMSSM in the Light of LHC - 8 TeV and Other Data
• Non-conformality of gamma_i-deformed N=4 SYM theory
• Gaugino coannihilations
• Collider and Dark Matter Phenomenology of Models with Mirage Unification
• Collider signals and neutralino dark matter detection in relic-density-consistent models without universality
• Natural SUSY with a bino- or wino-like LSP
• A new approach for detecting compressed bino/wino at the LHC
• Exploring MSSM for Charge and Color Breaking and Other Constraints in the Context of Higgs@125 GeV
• Non-universal gaugino masses and semi-natural supersymmetry in view of the Higgs boson discovery
• Coannihilation Scenarios and Particle Spectroscopy in SU(4)_c x SU(2)_L x SU(2)_R
• Heavy-flavour tagging and the supersymmetry reach of the CERN Large Hadron Collider
• Co-scattering in micrOMEGAs: a case study for the singlet-triplet dark matter model
• Prospects for Higgs- and Z-resonant Neutralino Dark Matter
• The Not-So-Well Tempered Neutralino
• Probing Bino-Wino Coannihilation at the LHC
• Revising inelastic dark matter direct detection by including the cosmic ray acceleration
• Hunting electroweakinos at future hadron colliders and direct detection experiments
• Probing bino-wino coannihilation dark matter under the neutrino floor at the LHC
• Increasing the Neutralino Relic Abundance with Slepton Coannihilations: Consequences for Indirect Dark Matter Detection
• SO(10) as a Framework for Natural Supersymmetry
• Long live the Higgs portal!
• Collider and Dark Matter Searches in Models with Mixed Modulus-Anomaly Mediated SUSY Breaking
• Implications of Compressed Supersymmetry for Collider and Dark Matter Searches
• 125 GeV Higgs Boson from t-b-tau Yukawa Unification
• Mixed Higgsino Dark Matter from a Large SU(2) Gaugino Mass
• The Search for Electroweakinos
• Gaugino Mediation Scenarios for Muon $g-2$ and Dark Matter
• Mixed Bino-Wino-Higgsino Dark Matter in Gauge Messenger Models
• Mixed (Cold+Warm) Dark Matter in the Bino-Wino co-annihilation scenario
• A Minimal SU(5) SuperGUT in Pure Gravity Mediation
• Constraining Electroweakinos in the Minimal Dirac Gaugino Model
• Reconciling thermal leptogenesis with the gravitino problem in SUSY models with mixed axion/axino dark matter
• Cornering Compressed Gluino at the LHC
• Probing SUSY beyond the reach of LEP2 at the Fermilab Tevatron: low |M_3| dark matter models
• Coscattering in next-to-minimal dark matter and split supersymmetry
• A relatively light, highly bino-like dark matter in the $Z_3$-symmetric NMSSM and recent LHC searches
• Alignment without Decoupling: the Portal to Light Dark Matter in the MSSM
• Next-to-minimal dark matter at the LHC
• Supersymmetric Left-Right Model of Radiative Neutrino Mass with Multipartite Dark Matter
• The Power of Genetic Algorithms: what remains of the pMSSM?
• Supergravity Models with 50-100 TeV Scalars, SUSY Discovery at the LHC and Gravitino Decay Constraints
• On the coverage of neutralino dark matter in coannihilations at the upgraded LHC
• Bino-wino coannihilation as a prediction in the $E_7$ unification of families
• A New Extensions of MSSM: FMSSM
• Muon $g-2$ in Split-Family SUSY in light of LHC Run II
• Phenomenological profile of scotogenic fermionic dark matter
• LHC constraints on electroweakino dark matter revisited
• IceCube, DeepCore, PINGU and the indirect search for supersymmetric dark matter
• Search for the SUSY Electroweak Sector at $ep$ Colliders
• Probing mild-tempered neutralino dark matter through top-squark production at the LHC
• Lepton flavor violations in SUSY models for muon $g-2$ with right-handed neutrinos
• Accidental Supersymmetric Dark Matter and Baryogenesis
• Probing Bino-Gluino Coannihilation at the LHC
• High Energy Physics and Cosmology at the Unification Frontier: Opportunities and Challenges in the coming years
• Renormalization Effects on Electric Dipole Moments in Electroweakly Interacting Massive Particle Models
• Machine-Learning Analysis of Radiative Decays to Dark Matter at the LHC
• Collider signatures for dark matter and long-lived particles with Pythia 8
• Finding viable Models in SUSY Parameter Spaces with Signal Specific Discovery Potential
• Muons from Neutralino Annihilations in the Sun: Flipped SU(5)
• LHC and dark matter implications of t-b-τ Yukawa unification in split SUSY GUTs