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Search for dark matter produced in association with a leptonically decaying Z boson in proton-proton collisions at $\sqrt{s} =$ 13 TeV

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arxiv 2008.04735 v2 pith:WJFQKIMN submitted 2020-08-11 hep-ex

classification hep-ex
keywords bosondarkmattersearchcontexteventslargelimits
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

A search for dark matter particles is performed using events with a Z boson candidate and large missing transverse momentum. The analysis is based on proton-proton collision data at a center-of-mass energy of 13 TeV, collected by the CMS experiment at the LHC in 2016-2018, corresponding to an integrated luminosity of 137 fb$^{-1}$. The search uses the decay channels Z $\to$ ee and Z $\to$ $\mu\mu$. No significant excess of events is observed over the background expected from the standard model. Limits are set on dark matter particle production in the context of simplified models with vector, axial-vector, scalar, and pseudoscalar mediators, as well as on a two-Higgs-doublet model with an additional pseudoscalar mediator. In addition, limits are provided for spin-dependent and spin-independent scattering cross sections and are compared to those from direct-detection experiments. The results are also interpreted in the context of models of invisible Higgs boson decays, unparticles, and large extra dimensions.

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Cited by 6 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Search for resonant production of lepton-enriched semivisible jets in proton-proton collisions at $\sqrt{s}$ = 13 TeV

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    A CMS search with 138 fb^-1 of 13 TeV data finds no lepton-enriched semivisible jet resonance and excludes Z' masses up to 4.7 TeV (SVJ l) and 1.8-3.5 TeV (SVJ tau) at 95% CL.

  2. Search for dark matter production in association with bottom quarks and a lepton pair in proton-proton collisions at $\sqrt{s}$ = 13 TeV

    hep-ex 2025-10 accept novelty 6.0 of 10

    First dedicated CMS search for bb + dilepton + missing transverse momentum in the 2HDM+a model finds no signal and sets 95% CL cross-section limits of 10^-2 to 10^-3 pb for mH = 400-2000 GeV.

  3. Unveiling the inert Triplet desert region with a pNGB Dark Matter and its Gravitational Wave signatures

    hep-ph 2025-05 conditional novelty 6.0 of 10

    A two-component dark matter model combining an inert scalar triplet with a pseudo-Goldstone singlet revives the sub-TeV triplet desert region and predicts gravitational waves detectable by LISA, BBO, and DECIGO.

  4. A self-consistent Higgs-portal framework for dark matter--admixed neutron stars: Collider-motivated benchmarks meet multimessenger constraints

    astro-ph.HE 2026-07 conditional novelty 5.0 of 10

    Adding heavy dark matter to neutron stars via nχ=FχnB softens the equation of state and lowers the maximum mass, but the vector interaction invoked is numerically negligible.

  5. Search for the production of dark Higgs in the framework of Mono-Z$^{\prime}$ portal at the FCC-ee simulated electron-positron collisions at $\sqrt{s} = 240$ GeV

    hep-ph 2026-02 unverdicted novelty 5.0 of 10

    Upper limits at 95% CL are placed on the mass of the dark Higgs boson in the Mono-Z' portal model from simulated FCC-ee data at 240 GeV center-of-mass energy.

  6. Evading Dark Matter Bounds through NLSP-Assisted Freeze-Out with Long-Lived Signatures

    hep-ph 2025-06 conditional novelty 5.0 of 10

    In a U(1)B-L model with four chiral fermions, conversion-driven freeze-out lets a long-lived heavier fermion set the dark matter relic density while direct detection stays weak.

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