Light Relic Neutralinos

Abstract

The relic abundance and the scalar cross-section off nucleon for light neutralinos (of mass below about 45 GeV) are evaluated in an effective MSSM model without GUT-inspired relations among gaugino masses. It is shown that these neutralinos may provide a sizeable contribution to the matter density in the Universe and produce measurable effects in WIMP direct detection experiments. These properties are elucidated in terms of simple analytical arguments.

11 pages, 4 figures, typeset with ReVTeX4. The paper may also be found at http://www.to.infn.it/~fornengo/papers/light.ps.gz Some comments and references added

References in corpus (29)

• The 2dF Galaxy Redshift Survey: The power spectrum and the matter content of the universe
• Towards a Precise Measurement of Matter Clustering: Lyman-alpha Forest Data at Redshifts 2-4
• Measurement of the Positive Muon Anomalous Magnetic Moment to 0.7 ppm
• A Measurement of the Branching Fraction for the Inclusive B --> X(s) gamma Decays with the Belle Detector
• Improved Exclusion Limits from the EDELWEISS WIMP Search
• Effect of the galactic halo modeling on the DAMA/NaI annual modulation result: an extended analysis of the data for WIMPs with a purely spin-independent coupling
• Gaugino Mass Nonuniversality and Dark Matter in SUGRA, Strings and D Brane Models
• Implications for relic neutralinos of the theoretical uncertainties in the neutralino-nucleon cross-section
• Probing the supersymmetric parameter space by WIMP direct detection
• Lower Bound on the Neutralino Mass from New Data on CMB and Implications for Relic Neutralinos
• Supersymmetric Dark Matter - How Light Can the LSP Be?
• Exclusion limits on the WIMP-nucleon cross-section from the Cryogenic Dark Matter Search
• Matter Power Spectrum from the Lyman-Alpha Forest: Myth or Reality?
• The SM prediction of g-2 of the muon
• The Role of Wino Content in Neutralino Dark Matter
• Size of the neutralino--nucleon cross--section in the light of a new determination of the pion--nucleon sigma term
• Compatibility of the new DAMA/NaI data on an annual modulation effect in WIMP direct search with a relic neutralino in supergravity schemes
• On the Neutralino as Dark Matter Candidate - I. Relic Abundance
• Search for Neutral Supersymmetric Higgs Bosons in $p\bar{p}$ Collisions at $\sqrt{s}=1.8$ TeV
• Pinning down neutralino properties from a possible modulation signal in WIMP direct search
• Implications of the Higgs Boson Searches on Different Soft SUSY-breaking Scenarios
• Neutralino properties in the light of a further indication of an annual modulation effect in WIMP direct search
• Further investigation of a relic neutralino as a possible origin of an annual-modulation effect in WIMP direct search
• Phenomenological Aspects of Supersymmetric Standard Models without Grand Unification
• Update of the direct detection of dark matter and the role of the nuclear spin
• Viable models with non-universal gaugino mediated supersymmetry breaking
• Light Neutralinos as Dark Matter in the Unconstrained Minimal Supersymmetric Standard Model
• Implications of a possible 115 GeV supersymmetric Higgs boson on detection and cosmological abundance of relic neutralinos
• Experimental Searches for Non-Baryonic Dark Matter: WIMP Direct Detection

Cited by in corpus (120)

• First results from DAMA/LIBRA and the combined results with DAMA/NaI
• New results from DAMA/LIBRA
• Asymmetric Dark Matter
• Compatibility of DAMA/LIBRA dark matter detection with other searches
• Antiprotons in cosmic rays from neutralino annihilation
• Dark Matter Detection in the Light of Recent Experimental Results
• A Lower Bound on the Mass of Cold Thermal Dark Matter from Planck
• Did Something Decay, Evaporate, or Annihilate during Big Bang Nucleosynthesis?
• Positrons from dark matter annihilation in the galactic halo: theoretical uncertainties
• A review of the discovery reach of directional Dark Matter detection
• Spin half fermions with mass dimension one: theory, phenomenology, and dark matter
• Light Neutralino Dark Matter in the NMSSM
• Possible implications of the channeling effect in NaI(Tl) crystals
• The R-Parity Violating Minimal Supergravity Model
• Light Neutralinos and WIMP direct searches
• Compatibility of DAMA Dark Matter Detection with Other Searches
• Sneutrino cold dark matter, a new analysis: relic abundance and detection rates
• On electromagnetic contributions in WIMP quests
• Experimental constraints on a dark matter origin for the DAMA annual modulation effect
• Mass Bounds on a Very Light Neutralino
• Spin-independent elastic WIMP scattering and the DAMA annual modulation signal
• Implications of CoGeNT and DAMA for Light WIMP Dark Matter
• A Consistent Dark Matter Interpretation For CoGeNT and DAMA/LIBRA
• Investigating electron interacting dark matter
• Supersymmetric Dark Matter - How Light Can the LSP Be?
• Observations of annual modulation in direct detection of relic particles and light neutralinos
• Lower Bound on the Neutralino Mass from New Data on CMB and Implications for Relic Neutralinos
• Fitting the Gamma-Ray Spectrum from Dark Matter with DMFIT: GLAST and the Galactic Center Region
• Neutralino annihilation into gamma-rays in the Milky Way and in external galaxies
• Dark Matter Direct Detection Signals inferred from a Cosmological N-body Simulation with Baryons
• Interpreting the recent results on direct search for dark matter particles in terms of relic neutralino
• Antideuteron fluxes from dark matter annihilation in diffusion models
• Low-threshold analysis of CDMS shallow-site data
• Neutralinos, Big Bang Nucleosynthesis and 6Li in Low-Metallicity Stars
• The Inert Doublet Model and Inelastic Dark Matter
• Dark Light Higgs
• Constraining sterile neutrino cosmologies with strong gravitational lensing observations at redshift z~0.2
• Investigating halo substructures with annual modulation signature
• Supernovae and Light Neutralinos: SN1987A Bounds on Supersymmetry Revisited
• Can neutralinos in the MSSM and NMSSM scenarios still be light?
• Invisible Quarkonium Decays as a Sensitive Probe of Dark Matter
• Higgsino Dark Matter in a SUGRA Model with Nonuniversal Gaugino Masses
• Investigation on light dark matter
• Indirect signals from light neutralinos in supersymmetric models without gaugino mass unification
• Remnants of dark matter clumps
• Neutralino dark matter in supergravity theories with non-universal scalar and gaugino masses
• A Concept for A Dark Matter Detector Using Liquid Helium-4
• Right-handed sneutrino dark matter in the NMSSM
• Low Mass Neutralino Dark Matter in the MSSM with Constraints from $B_s\to {\mu }^{+}{\mu }^{-}$ and Higgs Search Limits
• Higgs decays to dark matter: beyond the minimal model
• Discussing direct search of dark matter particles in the Minimal Supersymmetric extension of the Standard Model with light neutralinos
• Relic neutralinos and the two dark matter candidate events of the CDMS II experiment
• Lower limit on the neutralino mass in the general MSSM
• Light Neutralinos with Large Scattering Cross Sections in the Minimal Supersymmetric Standard Model
• Supersymmetric Sub-Electroweak Scale Dark Matter, the Galactic Center Gamma-ray Excess, and Exotic Decays of the 125 GeV Higgs Boson
• LHC constraints on light neutralino dark matter in the MSSM
• R-parity Violation and Light Neutralinos at CODEX-b, FASER, and MATHUSLA
• Phenomenology of light neutralinos in view of recent results at the CERN Large Hadron Collider
• Hunting the lightest lightest neutralinos
• Zooming in on light relic neutralinos by direct detection and measurements of galactic antimatter
• CoGeNT, DAMA, and Light Neutralino Dark Matter
• Very light right-handed sneutrino dark matter in the NMSSM
• Light Neutralino Dark Matter in the pMSSM: Implications of LEP, LHC and Dark Matter Searches on SUSY Particle Spectra
• Antiproton fluxes from light neutralinos
• Revisiting light neutralino scenarios in the MSSM
• Investigating light neutralinos at neutrino telescopes
• Do current WIMP direct measurements constrain light relic neutralinos?
• R-parity Violation and Light Neutralinos at ANUBIS and MAPP
• Supersymmetric dark matter search via spin-dependent interaction with He3
• Light dark matter in leptophobic Z' models
• Physics with Far Detectors at Future Lepton Colliders
• A Two-Singlet Model for Light Cold Dark Matter
• Potential for Precision Measurement of Low-Energy Antiprotons with GAPS for Dark Matter and Primordial Black Hole Physics
• Light Neutralino in the MSSM: a playground for dark matter, flavor physics and collider experiments
• Testing the light dark matter scenario of the MSSM at the LHC
• Naturalness of Neutralino Dark Matter
• Impact of the recent results by the CMS and ATLAS Collaborations at the CERN Large Hadron Collider on an effective Minimal Supersymmetric extension of the Standard Model
• The invisible decay of Higgs boson in the context of a thermal and non-thermal relic in MSSM
• Lightest Higgs Boson and Relic Neutralino in the MSSM with CP Violation
• Light neutralino dark matter in the MSSM and its implication for LHC searches for staus
• Light neutralinos at LHC in cosmologically-inspired scenarios: new benchmarks in the search for supersymmetry
• Enlarging mSUGRA parameter space by decreasing pre-BBN Hubble rate in Scalar-Tensor Cosmologies
• Light dark matter in the singlet-extended MSSM
• A light neutralino in hybrid models of supersymmetry breaking
• Formulation and constraints on decaying dark matter with finite mass daughter particles
• Probing neutralino dark matter in the MSSM & the NMSSM with directional detection
• Embedding the 125 GeV Higgs boson measured at the LHC in an effective MSSM: possible implications for neutralino dark matter
• Long-lived light neutralinos at future $Z-$factories
• The Higgs boson in the MSSM in light of the LHC
• Measuring a Light Neutralino Mass at the ILC: Testing the MSSM Neutralino Cold Dark Matter Model
• Long-lived neutral fermions at the DUNE near detector
• Light Dirac right-handed sneutrino dark matter
• CoGeNT, DAMA, and Neutralino Dark Matter in the Next-To-Minimal Supersymmetric Standard Model
• Long-lived light neutralinos at Belle II
• Isospin violating dark matter being asymmetric
• Searching for a Single Photon from Lightest Neutralino Decays in R-parity-violating Supersymmetry at FASER
• Probing $R$-parity violation in $B$-meson decays to a baryon and a light neutralino
• Neutralino Dark Matter in Light Higgs Boson Scenario
• Detecting dark matter in electromagnetic field penetration experiments
• Atomic ionization by scalar dark matter and solar scalars
• DAMA detection claim is still compatible with all other DM searches
• Determining Supersymmetric Parameters With Dark Matter Experiments
• CDMS II result and Light Higgs Boson Scenario of the MSSM
• Signatures and Detection Prospects for sub-GeV Dark Matter with Superfluid Helium
• Light Neutralino Dark Matter in $U(1{)}^{\prime }$ models
• On the DM interpretation of the origin of non-thermal phenomena in galaxy clusters
• Modelling the transient processes produced under heavy particle irradiation
• Comptonisation of Cosmic Microwave Background Photons in Dwarf Spheroidal Galaxies
• Time-delayed electrons from neutral currents at the LHC
• Search at the CERN LHC for a light neutralino of cosmological interest
• Neutralino Dark Matter and Trilepton Searches in the MSSM
• Low-mass neutralino dark matter in supergravity scenarios: phenomenology and naturalness
• Deflected Anomaly Mediation and Neutralino Dark Matter
• Higgs decays in supersymmetric models with light neutralinos
• Searching for light neutralinos with a displaced vertex at the LHC
• Particle Dark Matter Candidates
• Searching for long-lived light neutralinos and axionlike particles at the SHiNESS experiment
• Higgs, supersymmetry and dark matter after Run I of the LHC
• How light can the lightest neutralino be?
• Light right-handed Smuons at the LHC: Natural dark matter and $g_{\mu }-2$ in an unexplored realm of the pMSSM