MadDM: New dark matter tool in the LHC era

Backović, Mihailo; Martini, A.; Kong, Kyoungchul; Mattelaer, Olivier; Mohlabeng, Gopolang

doi:10.1063/1.4953318

Cited by 15 publications

(15 citation statements)

References 20 publications

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“…Numerical values are obtained from Ref. [26], where they were calculated using MADDM in version 2.06 [62,63]. In the hatched area, the DM would be overabundant in the universe.…”

Section: Statistical Analysis Results and Interpretationmentioning

confidence: 99%

“…The lines with the hatching represents the excluded regions. The solid grey lines, marked as "Ωh 2 ≥ 0.12", correspond to parameter regions that reproduce the observed DM relic density in the universe [4,26,62,63], with the hatched area indicating the region where the DM relic abundance exceeds the observed value.…”

Section: Statistical Analysis Results and Interpretationmentioning

confidence: 99%

See 1 more Smart Citation

Search for high-mass resonances in dilepton final states in proton-proton collisions at $$ \sqrt{s}=13 $$ TeV

Sirunyan

Tumasyan

Adam

et al. 2018

J. High Energ. Phys.

136

131

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A search is presented for new high-mass resonances decaying into electron or muon pairs. The search uses proton-proton collision data at a centre-of-mass energy of 13 TeV collected by the CMS experiment at the LHC in 2016, corresponding to an integrated luminosity of 36 fb −1 . Observations are in agreement with standard model expectations. Upper limits on the product of a new resonance production cross section and branching fraction to dileptons are calculated in a model-independent manner. This permits the interpretation of the limits in models predicting a narrow dielectron or dimuon resonance. A scan of different intrinsic width hypotheses is performed. Limits are set on the masses of various hypothetical particles. For the Z SSM (Z ψ ) particle, which arises in the sequential standard model (superstring-inspired model), a lower mass limit of 4.50 (3.90) TeV is set at 95% confidence level. The lightest Kaluza-Klein graviton arising in the Randall-Sundrum model of extra dimensions, with coupling parameters k/M Pl of 0.01, 0.05, and 0.10, is excluded at 95% confidence level below 2.10, 3.65, and 4.25 TeV, respectively. In a simplified model of dark matter production via a vector or axial vector mediator, limits at 95% confidence level are obtained on the masses of the dark matter particle and its mediator.• vector mediator with small couplings to leptons: g q = 0.1, g DM = 1.0, g = 0.01; • axial-vector mediator with equal couplings to quark and leptons: g DM = 1.0, g q = g = 0.1.Possible interference between the mediator of the dilepton process and the Drell-Yan (DY) background is well below 5% and can be safely neglected in the present analysis [26].

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“…Numerical values are obtained from Ref. [26], where they were calculated using MADDM in version 2.06 [62,63]. In the hatched area, the DM would be overabundant in the universe.…”

Section: Statistical Analysis Results and Interpretationmentioning

confidence: 99%

Section: Statistical Analysis Results and Interpretationmentioning

confidence: 99%

Search for high-mass resonances in dilepton final states in proton-proton collisions at $$ \sqrt{s}=13 $$ TeV

Sirunyan

Tumasyan

Adam

et al. 2018

J. High Energ. Phys.

136

131

View full text Add to dashboard Cite

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“…We implement the model containing effective interactions of DM particle with the SM sector using FeynRules [49] and generate the model files for CalcHEP which is required for the relic density calculation in micrOmegas [50]. These results have been verified with MadDM [51,52].…”

Section: The Annihilation Cross-sectionsmentioning

confidence: 92%

Signals of leptophilic dark matter at the ILC

2017

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Adopting a model independent approach, we constrain the various effective interactions of leptophilic DM particles with the visible world from the WMAP and Planck data. The thermally averaged indirect DM annihilation cross section and the DM-electron direct-detection cross section for such a DM candidate are observed to be consistent with the respective experimental data. We study the production of cosmologically allowed leptophilic DM in association with Z (Z → ff ), f ≡ q, e − , μ − at the ILC. We perform the χ 2 analysis and compute the 99% C.L. acceptance contours in the m χ and Λ plane from the two-dimensional differential distributions of various kinematic observables obtained after employing parton showering and hadronisation to the simulated data. We observe that the dominant hadronic channel provides the best kinematic reach of 2.62 TeV (m χ = 25 GeV), which further improves to ∼3 TeV for polarised beams at √ s = 1 TeV and an integrated luminosity of 1 ab −1 .

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“…In this section, we assume that the two aforementioned assumptions are satisfied, and present an analytic calculation of the relic density for the dominant annihilation processes that involve spin-0 and spin-1 mediators. We then provide numerical computations of the relic density for the scalar, pseudo-scalar, vector, and axial-vector simplified model scenarios using version 2.0 of the DMsimp implementation [22] and version 2.0.6 of MadDM [39,40]. The Lagrangians for these models can be found in [7] and references therein.…”

Section: Relic Densitymentioning

confidence: 99%

Recommendations of the LHC Dark Matter Working Group: Comparing LHC searches for dark matter mediators in visible and invisible decay channels and calculations of the thermal relic density

Albert

Backović

Boveia

et al. 2019

Physics of the Dark Universe

Self Cite

107

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Weakly-coupled TeV-scale particles may mediate the interactions between normal matter and dark matter. If so, the LHC would produce dark matter through these mediators, leading to the familiar "mono-X" search signatures, but the mediators would also produce signals without missing momentum via the same vertices involved in their production. This document from the LHC Dark Matter Working Group suggests how to compare searches for these two types of signals in case of vector and axial-vector mediators, based on a workshop that took place on September 19/20, 2016 and subsequent discussions. These suggestions include how to extend the spin-1 mediated simplified models already in widespread use to include lepton couplings. This document also provides analytic calculations of the relic density in the simplified models and reports an issue that arose when ATLAS and CMS first began to use preliminary numerical calculations of the dark matter relic density in these models.

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MadDM: New dark matter tool in the LHC era

Cited by 15 publications

References 20 publications

Search for high-mass resonances in dilepton final states in proton-proton collisions at $$ \sqrt{s}=13 $$ TeV

Search for high-mass resonances in dilepton final states in proton-proton collisions at $$ \sqrt{s}=13 $$ TeV

Signals of leptophilic dark matter at the ILC

Recommendations of the LHC Dark Matter Working Group: Comparing LHC searches for dark matter mediators in visible and invisible decay channels and calculations of the thermal relic density

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