Dark Matter, Light Stops and Electroweak Baryogenesis

Abstract

We examine the neutralino relic density in the presence of a light top squark, such as the one required for the realization of the electroweak baryogenesis mechanism, within the minimal supersymmetric standard model. We show that there are three clearly distinguishable regions of parameter space, where the relic density is consistent with WMAP and other cosmological data. These regions are characterized by annihilation cross sections mediated by either light Higgs bosons, Z bosons, or by the co-annihilation with the lightest stop. Tevatron collider experiments can test the presence of the light stop in most of the parameter space. In the co-annihilation region, however, the mass difference between the light stop and the lightest neutralino varies between 15 and 30 GeV, presenting an interesting challenge for stop searches at hadron colliders. We present the prospects for direct detection of dark matter, which provides a complementary way of testing this scenario. We also derive the required structure of the high energy soft supersymmetry breaking mass parameters where the neutralino is a dark matter candidate and the stop spectrum is consistent with electroweak baryogenesis and the present bounds on the lightest Higgs mass.

24 pages, 8 figures; version published in Phys.Rev.D

References in corpus (96)

• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Determination of Cosmological Parameters
• Cosmological parameters from SDSS and WMAP
• A Supersymmetry Primer
• Search for the Standard Model Higgs Boson at LEP
• A complete analysis of FCNC and CP constraints in general SUSY extensions of the standard model
• Progress in Electroweak Baryogenesis
• Measurement of the Negative Muon Anomalous Magnetic Moment to 0.7 ppm
• The Masses of the Neutral CP-even Higgs Bosons in the MSSM: Accurate Analysis at the Two-Loop Level
• micrOMEGAs: A program for calculating the relic density in the MSSM
• Recent Progress in Baryogenesis
• Hadronic light-by-light scattering contribution to the muon anomalous magnetic moment revisited
• Towards a Theory of Soft Terms for the Supersymmetric Standard Model
• Effective potential methods and the Higgs mass spectrum in the MSSM
• Electroweak Baryon Number Non-Conservation in the Early Universe and in High Energy Collisions
• Measurement of the Positive Muon Anomalous Magnetic Moment to 0.7 ppm
• TESLA Technical Design Report Part III: Physics at an e+e- Linear Collider
• B -> X_s gamma in supersymmetry: large contributions beyond the leading order
• Opening the Window for Electroweak Baryogenesis
• ISAJET 7.37: A Monte Carlo Event Generator for $pp$, $\bar{p}p$, and $e^{+}{e}^{-}$ Interactions
• b -> s γand supersymmetry with large tanβ
• Updated Estimate of the Muon Magnetic Moment Using Revised Results from e+e- Annihilation
• Reconciling the Two-Loop Diagrammatic and Effective Field Theory Computations of the Mass of the Lightest CP-even Higgs Boson in the MSSM
• The Neutrino Mass Window for Baryogenesis
• Effective dynamics of soft non-abelian gauge fields at finite temperature
• The universality class of the electroweak theory
• First Results from the Cryogenic Dark Matter Search in the Soudan Underground Lab
• Light Scalar Top Quarks and Supersymmetric Dark Matter
• Supergravity with a Gravitino LSP
• On the O(alpha_t^2) two-loop corrections to the neutral Higgs boson masses in the MSSM
• QCD Corrections to the Masses of the neutral CP-even Higgs Bosons in the MSSM
• Next-to-Leading QCD Corrections to B\to X_s γin Supersymmetry
• On the neutral Higgs boson masses in the MSSM for arbitrary stop mixing
• CPsuperH: a Computational Tool for Higgs Phenomenology in the Minimal Supersymmetric Standard Model with Explicit CP Violation
• Complete Two-loop Dominant Corrections to the Mass of the Lightest CP-even Higgs Boson in the Minimal Supersymmetric Standard Model
• Gravitino Dark Matter in the CMSSM
• Constraints on the Minimal Supergravity Model and Prospects for SUSY Particle Production at Future Linear e^+ e^- Colliders
• Supersymmetric Electroweak Baryogenesis
• Improved Exclusion Limits from the EDELWEISS WIMP Search
• Neutralino relic density in minimal supergravity with co-annihilations
• Precise Prediction for the Mass of the Lightest Higgs Boson in the MSSM
• Calculations of Neutralino-Stop Coannihilation in the CMSSM
• Electroweak Baryogenesis and Higgs and Stop Searches at LEP and the Tevatron
• Two-Loop SUSY Corrections to the Anomalous Magnetic Moment of the Muon
• Improved Results in Supersymmetric Electroweak Baryogenesis
• MSSM Lightest CP-Even MSSM Higgs Boson Mass to O(alpha_s alpha_t): the Effective Potential Approach
• Predictions for g-2 of the muon and alpha_QED(M_Z^2)
• Loop Corrections to the Neutral Higgs Boson Sector of the MSSM with Explicit CP Violation
• The MSSM Electroweak Phase Transition on the Lattice
• Supersymmetric CP-violating Currents and Electroweak Baryogenesis
• MSSM Higgs Boson Phenomenology at the Tevatron Collider
• SuperWIMP Gravitino Dark Matter from Slepton and Sneutrino Decays
• The hadronic contributions to the anomalous magnetic moment of the muon
• Higgs-Boson Pole Masses in the MSSM with Explicit CP Violation
• Exclusion limits on the WIMP-nucleon cross-section from the Cryogenic Dark Matter Search
• Complete two-loop effective potential approximation to the lightest Higgs scalar boson mass in supersymmetry
• Effective Theories of MSSM at High Temperature
• Impact of Muon Anomalous Magnetic Moment on Supersymmetric Models
• Radiative Electroweak Symmetry Breaking and the Infrared Fixed Point of the Top Quark Mass
• The baryogenesis window in the MSSM
• The 2-loop MSSM finite temperature effective potential with stop condensation
• Sphaleron rate in the symmetric electroweak phase
• WMAPing the Universe: Supersymmetry, Dark Matter, Dark Energy, Proton Decay and Collider Physics
• Improved ${\alpha }^4$ Term of the Muon Anomalous Magnetic Moment
• Diffusion Enhances Spontaneous Electroweak Baryogenesis
• High Temperature Dimensional Reduction of the MSSM and other Multi-Scalar Models
• Direct Detection of Dark Matter in Supersymmetric Models
• The Higgs Boson Sector of the Complex MSSM in the Feynman-diagrammatic approach
• Linear Collider Physics Resource Book for Snowmass 2001 - Part 2: Higgs and Supersymmetry Studies
• Likelihood Analysis of the CMSSM Parameter Space
• Exploration of Elastic Scattering Rates for Supersymmetric Dark Matter
• Muon g-2, Dark Matter Detection and Accelerator Physics
• Two Higgs doublet dynamics at the electroweak phase transition: a non-perturbative study
• Classical Sphaleron Rate on Fine Lattices
• Report of the SUGRA Working Group for Run II of the Tevatron
• Neutralino Exchange Corrections to the Higgs Boson Mixings with Explicit CP Violation
• SUSY and the Electroweak Phase Transition
• The Two-Loop Finite-Temperature Effective Potential of the MSSM and Baryogenesis
• High temperature color conductivity at next-to-leading log order
• Supersymmetry Reach of the Tevatron via Trilepton, Like-Sign Dilepton and Dilepton plus Tau Jet Signatures
• Stop and Sbottom Searches in Run II of the Fermilab Tevatron
• Single-top-squark production via R-parity-violating supersymmetric couplings in hadron collisions
• Status of the Finite Temperature Electroweak Phase Transition on the Lattice
• Search for Scalar Top and Scalar Bottom Quarks in $p\bar{p}$ collisions at $\sqrt{s}=1.8$ TeV
• Constraint on axial-vector meson mixing angle from nonrelativistic constituent quark model
• Two-loop dimensional reduction and effective potential without temperature expansions
• Mixing Effects in the Finite-Temperature Effective Potential of the MSSM with a Light Stop
• Sensitivity of Supersymmetric Dark Matter to the b Quark Mass
• Direct probes of R-parity-violating supersymmetric couplings via single-top-squark production
• Scalar Top Quark as the Next-to-Lightest Supersymmetric Particle
• An effective theory for omega << k << gT color dynamics in hot non-Abelian plasmas
• Electroweak Baryogenesis in the MSSM
• GENIUS - A New Underground Observatory for Non-Accelerator Particle Physics
• Top-squark searches at the Tevatron in models of low-energy supersymmetry breaking
• Dark Matter Abundance and Electroweak Baryogenesis in the CMSSM
• Partial wave treatment of Supersymmetric Dark Matter in the presence of CP - violation
• ZEPLIN IV: A 1-Ton Very Sensitive ZEPLIN II Extension for SUSY Dark Matter

Cited by in corpus (90)

• Electroweak baryogenesis
• Stable Massive Particles at Colliders
• NMSSM Higgs Benchmarks Near 125 GeV
• Electroweak baryogenesis and dark matter from a singlet Higgs
• Electroweak Baryogenesis and Dark Matter in the nMSSM
• The Baryogenesis Window in the MSSM
• Quantum Transport and Electroweak Baryogenesis
• WIMPs at the Galactic Center
• Electroweak Baryogenesis and New TeV Fermions
• Search for heavy charged long-lived particles in the ATLAS detector in 36.1 fb${}^{-1}$ of proton-proton collision data at $\sqrt{s}=13$ TeV
• Compressed supersymmetry and natural neutralino dark matter from top squark-mediated annihilation to top quarks
• Search for new physics in events with two soft oppositely charged leptons and missing transverse momentum in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• The Supersymmetric Origin of Matter
• Measurement of the t-tbar production cross section in the e-mu channel in proton-proton collisions at sqrt(s) = 7 and 8 TeV
• Baryogenesis, Electric Dipole Moments and Dark Matter in the MSSM
• Light Stop Searches at the LHC with Monojet Events
• It's a Gluino!
• Anatomy of Coannihilation with a Scalar Top Partner
• Collider aspects of flavour physics at high Q
• Constraints on B and Higgs Physics in Minimal Low Energy Supersymmetric Models
• Light Stop Searches at the LHC in Events with One Hard Photon or Jet and Missing Energy
• Search for direct production of supersymmetric partners of the top quark in the all-jets final state in proton-proton collisions at sqrt(s) = 13 TeV
• Indirect detection of light neutralino dark matter in the NMSSM
• Searches for the BSM scenarios at the LHC using decision tree based machine learning algorithms: A comparative study and review of Random Forest, Adaboost, XGboost and LightGBM frameworks
• The Effective Theory of the Light Stop Scenario
• Phenomenology of the nMSSM from colliders to cosmology
• Same-sign top quarks as signature of light stops at the CERN LHC
• Search for top squark production in fully-hadronic final states in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Diphoton decays of stoponium at the Large Hadron Collider
• Search for gluinos in events with two same-sign leptons, jets and missing transverse momentum with the ATLAS detector in pp collisions at sqrt(s) = 7 TeV
• Non-universal gaugino masses, the supersymmetric little hierarchy problem, and dark matter
• Light Stop Searches at the LHC in Events with two b-Jets and Missing Energy
• Collider and Dark Matter Phenomenology of Models with Mirage Unification
• Very Light Scalar Top Quarks at the LHC
• Probing Light Stop Pairs at the LHC
• Search for supersymmetry in final states with two or three soft leptons and missing transverse momentum in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Search for supersymmetry in events with a $\tau$ lepton pair and missing transverse momentum in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Relic density of neutralino dark matter in the MSSM with CP violation
• Non-universal gaugino masses and semi-natural supersymmetry in view of the Higgs boson discovery
• Higgs Boson Signatures of MSSM Electroweak Baryogenesis
• Exploring compressed supersymmetry with same-sign top quarks at the Large Hadron Collider
• Search for electroweak production of charginos and neutralinos in WH events in proton-proton collisions at sqrt(s) = 13 TeV
• Light Stop Decays: Implications for LHC Searches
• Measuring Flavor Mixing with Minimal Flavor Violation at the LHC
• Search for direct pair production of supersymmetric partners to the $\tau$ lepton in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Radiative corrections to co-annihilation processes
• Searches for pair production of third-generation squarks in sqrt(s) = 13 TeV pp collisions
• Search for Pair Production of Supersymmetric Top Quarks in Dilepton Events from $p\bar{p}$ Collisions at $\sqrt{s}$ = 1.96 TeV
• New limits on top squark NLSP from ATLAS 4.7 $f{b}^{-1}$ data
• The top squark-mediated annihilation scenario and direct detection of dark matter in compressed supersymmetry
• LHC search for di-Higgs decays of stoponium and other scalars in events with two photons and two bottom jets
• Search for supersymmetry in events with soft leptons, low jet multiplicity, and missing transverse momentum in proton-proton collisions at sqrt(s) = 8 TeV
• Electroweak phase transition in the MSSM with four generations
• On the origin of matter in the Universe
• Single top production in the $t$-channel at LHC: a realistic test of electroweak models
• Collider and Dark Matter Searches in Models with Mixed Modulus-Anomaly Mediated SUSY Breaking
• Dark matter detection in the BMSSM
• Search for top squark pair production in compressed-mass-spectrum scenarios in proton-proton collisions at sqrt(s) = 8 TeV using the alpha[T] variable
• Constraints on Supersymmetric Dark Matter for Heavy Scalar Superpartners
• Radiative corrections to stoponium annihilation decays
• BMSSM Implications for Cosmology
• Leading QCD Corrections for Indirect Dark Matter Searches: a Fresh Look
• Analyzing the Scalar Top Co-Annihilation Region at the ILC
• Electroweak Baryogenesis and Colored Scalars
• Electroweak Baryogenesis And The Fermi Gamma-Ray Line
• Search for top squarks decaying via four-body or chargino-mediated modes in single-lepton final states in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• A search for new phenomena in pp collisions at sqrt(s) = 13 TeV in final states with missing transverse momentum and at least one jet using the alphaT variable
• The Interplay Between Collider Searches For Supersymmetric Higgs Bosons and Direct Dark Matter Experiments
• Light Stop Mass Limits from Higgs Rate Measurements in the MSSM: Is MSSM Electroweak Baryogenesis Still Alive After All?
• 1-loop SQCD corrections to the decay of top-squarks to charm and neutralino in the generic MSSM
• Search for direct pair production of scalar top quarks in the single- and dilepton channels in proton-proton collisions at sqrt(s) = 8 TeV
• Non-thermal leptogenesis via direct inflaton decay without SU(2)(L) triplets
• Looking for the Top-squark at the Tevatron with four jets
• Search for Top Squarks at Tevatron Inspired by Dark Matter and Electroweak Baryogenesis
• Search for supersymmetry in events with one lepton and multiple jets exploiting the angular correlation between the lepton and the missing transverse momentum in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Collider searches and cosmology in the MSSM with heavy scalars
• Search for top squarks in the four-body decay mode with single lepton final states in proton-proton collisions at $\sqrt{s}$ = 13 TeV
• Search for bottom squarks in the baryon-number violating MSSM
• A Method for the Precision Mass Measurement of the Stop Quark at the International Linear Collider
• Refining the predictions of supersymmetric CP-violating models: A top-down approach
• Decoherence in an Interacting Quantum Field Theory: Thermal Case
• Mixed Stops and the ATLAS on-Z Excess
• Search for physics beyond the standard model in final states with two or three soft leptons and missing transverse momentum in proton-proton collisions at $\sqrt{s}=13\text{TeV}$
• Baryogenesis: A small review of the big picture
• Neutrino masses and sparticle spectra from stochastic superspace
• Searches for Physics Beyond the Standard Model at Colliders
• Searches for compressed SUSY models in leptonic final states with CMS
• Top-Quark Mass Measurement in the Dilepton Channel Using {\it in situ} Jet Energy Scale Calibration
• Higher-order QCD corrections to supersymmetric particle production and decay at the LHC
• Small Visible Energy Scalar Top Iterative Discriminant Analysis