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Light dark matter in the NMSSM: upper bounds on direct detection cross sections
High Energy Physics - Phenomenology · Submitted 7 Jul 2010
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim The resulting upper bounds on the spin-independent and spin-dependent nucleon cross sections are ~ 10^{-42} cm^{-2} and ~ 4\times 10^{-40} cm^{-2}, respectively.
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The abstract, sentence by sentence
In the Next-to-Minimal Supersymmetric Standard Model, a bino-like LSP can be as light as a few GeV and satisfy WMAP constraints on the dark matter relic density in the presence of a light CP-odd Higgs scalar. We study upper bounds on the direct detection cross sections for such a light LSP in the mass range 2-20 GeV in the NMSSM, respecting all constraints from B-physics and LEP. The OPAL constraints on e^+ e^- -> \chi^0_1 \chi^0_i (i > 1) play an important role and are discussed in some detail. The resulting upper bounds on the spin-independent and spin-dependent nucleon cross sections are ~ 10^{-42} cm^{-2} and ~ 4\times 10^{-40} cm^{-2}, respectively. Hence the upper bound on the spin-independent cross section is below the DAMA and CoGeNT regions, but could be compatible with the two events observed by CDMS-II.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | In the Next-to-Minimal Supersymmetric Standard Model, a bino-like LSP can be as light as a few GeV and satisfy WMAP constraints on the dark matter relic density in the presence of a light CP-odd Higgs scalar. | background 0.99 | 0.12 | 0.08 | asserted 0.51 |
| s1 | We study upper bounds on the direct detection cross sections for such a light LSP in the mass range 2-20 GeV in the NMSSM, respecting all constraints from B-physics and LEP. | contribution 1.00 | 0.92 | 0.09 | asserted 0.94 |
| s2 | The OPAL constraints on e^+ e^- -> \chi^0_1 \chi^0_i (i > 1) play an important role and are discussed in some detail. | method 0.80 | 0.24 | 0.04 | asserted 1.00 |
| s3 | The resulting upper bounds on the spin-independent and spin-dependent nucleon cross sections are ~ 10^{-42} cm^{-2} and ~ 4\times 10^{-40} cm^{-2}, respectively. | result 1.00 | 0.91 | 0.64 | asserted 1.00 |
| s4 | Hence the upper bound on the spin-independent cross section is below the DAMA and CoGeNT regions, but could be compatible with the two events observed by CDMS-II. | interpretation 0.98 | 0.79 | 0.52 | hedged possibility 0.74 |
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The paper
Original abstract
In the Next-to-Minimal Supersymmetric Standard Model, a bino-like LSP can be as light as a few GeV and satisfy WMAP constraints on the dark matter relic density in the presence of a light CP-odd Higgs scalar. We study upper bounds on the direct detection cross sections for such a light LSP in the mass range 2-20 GeV in the NMSSM, respecting all constraints from B-physics and LEP. The OPAL constraints on e^+ e^- -> \chi^0_1 \chi^0_i (i > 1) play an important role and are discussed in some detail. The resulting upper bounds on the spin-independent and spin-dependent nucleon cross sections are ~ 10^{-42} cm^{-2} and ~ 4\times 10^{-40} cm^{-2}, respectively. Hence the upper bound on the spin-independent cross section is below the DAMA and CoGeNT regions, but could be compatible with the two events observed by CDMS-II.
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References
How the literature uses it
28 arXiv papers cite this in 38 sentences
Papers citing it · 16 sentences without a confident label
Uses its method or tool 1 paper
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To calculate the cross section we follow the analysis in [ref] where [equation] $s=209.^2$ GeV$^2$ is the center of mass energy at LEP 2 and $N_ij$ is the matrix that diagonalizes the neutralino weak eigenstates introduced in Equation ([ref]).
A Singlet Extension of the MSSM with a Dark Matter Portal · $Γ^inv_Z$ and Neutralino sector · 0.99
Uses its data or values 2 papers
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The invisible decay width $Γ^inv_Z$ is determined by [ref] , [equation] The reported experimental bound $Γ^inv_Z≤2$ MeV [ref] implies that the magnitude of $(N^2_13-N^2_14)^2$ in Eq.([ref]) is upper bounded by $∼0.01$ roughly.
Light Neutralino Dark Matter in the NMSSM · Collider Constraints · 0.81
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However, we have updated the limit on $Γ_Z→$ to $1.9$ as in [ref] .] We have augmented to include the recent ALEPH constraints [ref] on $→Z +Higgs$ with $Higgs→aa$ (in our case $a=$, the lightest CP-odd Higgs boson of the NMSSM) with $a→$.
CoGeNT, DAMA, and Neutralino Dark Matter in the Next-To-Minimal Supersymmetric Standard Model · Constraints and Scanning in the NMSSM · 0.85
Compares with it 4 papers
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Nonetheless they are “only” a factor of 10 too small (whereas in Ref. [ref] the largest cross section found was a factor of 100 too small).
CoGeNT, DAMA, and Light Neutralino Dark Matter · Introduction · 0.86
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However, we found that many of these points possessed too large a bino fraction to survive the flavour physics constraints, particularly that coming from $$, that we later re-invoked as $2σ$ hard cuts, finding results very similar to those obtained in [ref] where $10^-6$.
Is light neutralino as dark matter still viable? · Summary · 0.97
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The larger $m_H_d-like$ in the scans of [ref] imply a larger $$ with the consequence that their largest $$ points are within the nominal $±2σ$ constraints from $b→s$ whereas our high-$$, $>0$ points are about $0.5σ$ outside the $±2σ$ region.
CoGeNT, DAMA, and Neutralino Dark Matter in the Next-To-Minimal Supersymmetric Standard Model · Benchmark Models In The NMSSM · 1.00
Cites it as background 13 papers
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Some later studies [ref] concentrated on a light bino-like DM ($≲40$ GeV, down to a few hundreds of MeV) that funnels through such light scalar(s) and were mostly motivated by the then recent reported excesses at experiments like DAMA, CoGeNT and CDMS-II and the exclusion limits from XENON and CDMS-Si experiments which all seemed to be compatible with such excesses.
A relatively light, highly bino-like dark matter in the $Z_3$-symmetric NMSSM and recent LHC searches · Introduction · 0.84
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The case of a light $$ has been discussed in the literature extensively [ref] [In addition to these we already discussed the extensions of the NMSSM where a $ν_R$ can be a thermal DM candidate and leads to characteristic LHC signals.].
Status of low mass LSP in SUSY · The neutralino $$ DM · 0.83
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Light neutralino DM has been studied in the most appealing realisations of Supersymmetry (SUSY) at the Electroweak (EW) scale such as the Minimal Supersymmetric Standard Model (MSSM) [ref] , the Next-to-MSSM (NMSSM) [ref] , and some minimal extensions of the NMSSM [ref] .
Low-mass neutralino dark matter in supergravity scenarios: phenomenology and naturalness · Introduction · 0.97
What it cites · 35 sentences without a confident label
Contests 1 paper
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However, the corresponding points in the parameter space given as examples in [ref] suffer from a negative effective $μ$-parameter (which is in conflict with the measured anomalous magnetic moment of the muon), and not all experimental constraints considered below are taken into account.
Light Neutralino Dark Matter in the NMSSM · Introduction · contest 0.87
Builds on 7 papers
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Direct detection cross sections in the NMSSM including WMAP constraints have been studied before in [ref] , but not for the LSP mass range considered here.
Precision measurements, dark matter direct detection and LHC Higgs searches in a constrained NMSSM · Introduction · 0.82
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Direct detection cross sections in the NMSSM including WMAP constraints have been studied before in [ref] , but not for the LSP mass range considered here.
Electroweak Symmetry Breaking and Singlino Dark Matter with Deflected Anomaly Mediation · Introduction · 0.82
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Direct detection cross sections in the NMSSM including WMAP constraints have been studied before in [ref] , but not for the LSP mass range considered here.
SUSY dark matter in light of CDMS II results: a comparative study for different models · Introduction · 0.82
Uses the method or tool of 9 papers
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For the numerical analysis we use the code NMSSMTools [ref] coupled to micrOMEGAs [ref] .
Relic density of dark matter in the NMSSM · Introduction · 1.00
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For the numerical analysis we use the code NMSSMTools [ref] coupled to micrOMEGAs [ref] .
Dark matter direct detection rate in a generic model with micrOMEGAs2.2 · Introduction · 1.00
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For the numerical analysis we use the code NMSSMTools [ref] coupled to micrOMEGAs [ref] .
micrOMEGAs2.0: a program to calculate the relic density of dark matter in a generic model · Introduction · 1.00
Uses data or values from 15 papers
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We replace it by the published value of $0.05$ pb [ref] for our numerical analysis.
Search for Chargino and Neutralino Production at sqrt(s) = 192-209 GeV at LEP · Constraints from sparticle and Higgs searches · 0.99
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On the dark matter relic density we impose the $3 σ$ WMAP bound [ref]
Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation · Additional constraints · 0.92
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From [ref] we obtain $ΔΓ_Z^inv 2.0$ MeV (a value slightly above the one used in [ref] , but below the value used in [ref] ).
Mass Bounds on a Very Light Neutralino · Constraints from sparticle and Higgs searches · 0.88
Compares with 4 papers
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Also shown in Fig. [ref] are the regions compatible with the excesses of events reported by DAMA [ref] (without channeling (dark blue) and with channeling (light blue)), CoGeNT [ref] (light green) and a fit to the two events observed by CDMS-II [ref] (denoted as CDMS-09 fit surrounded in dashed green; these events are also compatible with background).
First results from DAMA/LIBRA and the combined results with DAMA/NaI · Results and conclusions · 0.83
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Also shown in Fig. [ref] are the regions compatible with the excesses of events reported by DAMA [ref] (without channeling (dark blue) and with channeling (light blue)), CoGeNT [ref] (light green) and a fit to the two events observed by CDMS-II [ref] (denoted as CDMS-09 fit surrounded in dashed green; these events are also compatible with background).
Global interpretation of direct Dark Matter searches after CDMS-II results · Results and conclusions · 0.83
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Also shown in Fig. [ref] are the regions compatible with the excesses of events reported by DAMA [ref] (without channeling (dark blue) and with channeling (light blue)), CoGeNT [ref] (light green) and a fit to the two events observed by CDMS-II [ref] (denoted as CDMS-09 fit surrounded in dashed green; these events are also compatible with background).
Results from a Search for Light-Mass Dark Matter with a P-type Point Contact Germanium Detector · Results and conclusions · 0.83
Cites as support 4 papers
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As noticed in [ref] , the mass of the LSP can be considerably smaller in the NMSSM than in the MSSM and can still be compatible with the WMAP constraint on the relic density.
Experimental constraints on nMSSM and implications on its phenomenology · Introduction · 0.97
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As noticed in [ref] , the mass of the LSP can be considerably smaller in the NMSSM than in the MSSM and can still be compatible with the WMAP constraint on the relic density.
Invisible Quarkonium Decays as a Sensitive Probe of Dark Matter · Introduction · 0.97
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As noticed in [ref] , the mass of the LSP can be considerably smaller in the NMSSM than in the MSSM and can still be compatible with the WMAP constraint on the relic density.
Lightest Neutralino in Extensions of the MSSM · Introduction · 0.97
Cites as background 5 papers
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(Occasionally one considers the so-called nMSSM [ref] without the trilinear coupling $∼κ/3 S^3$, which is replaced by a tadpole-term $∼ξ_F S$.) Compared to the MSSM, the gauge singlet superfield $S$ adds additional degrees of freedom to the CP-even and CP-odd Higgs sectors as well as to the neutralino sector.
Experimental constraints on nMSSM and implications on its phenomenology · The NMSSM and the impact of its parameters on the LSP cross sections · 0.98
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(Occasionally one considers the so-called nMSSM [ref] without the trilinear coupling $∼κ/3 S^3$, which is replaced by a tadpole-term $∼ξ_F S$.) Compared to the MSSM, the gauge singlet superfield $S$ adds additional degrees of freedom to the CP-even and CP-odd Higgs sectors as well as to the neutralino sector.
SUSY dark matter in light of CDMS II results: a comparative study for different models · The NMSSM and the impact of its parameters on the LSP cross sections · 0.98
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(Occasionally one considers the so-called nMSSM [ref] without the trilinear coupling $∼κ/3 S^3$, which is replaced by a tadpole-term $∼ξ_F S$.) Compared to the MSSM, the gauge singlet superfield $S$ adds additional degrees of freedom to the CP-even and CP-odd Higgs sectors as well as to the neutralino sector.
Recoil Detection of the Lightest Neutralino in MSSM Singlet Extensions · The NMSSM and the impact of its parameters on the LSP cross sections · 0.98
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