HiHEP/
Articles/
2509001313
  • Open Access
  • Review

Supersymmetry Searches in CMS Run 2: A Complete Review

  • Sezen Sekmen

Received: 18 Aug 2025 | Revised: 13 Sep 2025 | Accepted: 16 Sep 2025 | Published: 23 Sep 2025

Abstract

The Run 2 data-taking period of the CERN Large Hadron Collider during years 2015--2018 provided about 140 fb-1 of proton-proton collisions at 13 TeV, offering an unprecedented opportunity to explore supersymmetry (SUSY) across a wide range of experimental signatures. CMS responded with a broad and diverse search program, carrying out dozens of analyses that probed a multitude of final states and systematically explored different regions of the SUSY parameter space. No significant deviations from standard model predictions were observed, and the results were used for constraining the SUSY landscape. In this review, I provide a comprehensive account of the CMS Run 2 SUSY program, covering its strategy, targeted models, and analysis methods. I then present the full set of searches and conclude with their combined impact through simplified model and phenomenological MSSM interpretations.

References 

  • 1.
    Guest, D.; Collado, J.; Baldi, P.; et al. Jet Flavor Classification in High-Energy Physics with Deep Neural Networks. Phys. Rev. D 2016, 94, 112002. https://doi.org/10.1103/PhysRevD.94.112002.
  • 2.
    Sirunyan, A.M.; Tumasyan, A.; Adam, W.; et al. Identification of heavy-flavour jets with the CMS detector in pp collisions at 13 TeV. J. Instrum. 2018, 13, P05011. https://doi.org/10.1088/1748-0221/13/05/P05011.
  • 3.
    Bols, E.; Kieseler, J.; Verzetti, M.; et al. Jet Flavour Classification Using DeepJet. J. Instrum. 2020, 15, P12012. https://doi.org/10.1088/1748-0221/15/12/P12012.
  • 4.
    CMS Collaboration. Performance of the DeepJet b Tagging Algorithm Using 41.9/fb of Data from Proton-Proton Collisions at 13TeV with Phase 1 CMS Detector; CMS Collaboration: Geneva, Switzerland, 2018.
  • 5.
    Sirunyan, A.M.; Tumasyan, A.; Adam, W.; et al. Identification of heavy, energetic, hadronically decaying particles using machine-learning techniques. J. Instrum. 2020, 15, P06005. https://doi.org/10.1088/1748-0221/15/06/P06005.
  • 6.
    CMS Collaboration. Performance of Deep Tagging Algorithms for Boosted Double Quark Jet Topology in Proton-Proton Collisions at 13 TeV with the Phase-0 CMS Detector;CMS Collaboration: Geneva, Switzerland, 2018.
  • 7.
    Qu, H.; Gouskos, L. ParticleNet: Jet Tagging via Particle Clouds. Phys. Rev. D 2020, 101, 056019.
  • 8.
    Tumasyan, A.; Adam, W.; Eerola, P.; et al. Identification of hadronic tau lepton decays using a deep neural network. J. Instrum. 2022, 17, P07023.
  • 9.
    Lester, C.G.; Summers, D.J. Measuring masses of semiinvisibly decaying particles pair produced at hadron colliders. Phys. Lett. B 1999, 463, 99–103.
  • 10.
    Barr, A.; Lester, C.; Stephens, P. m(T2): The Truth behind the glamour. J. Phys. G 2003, 29, 2343–2363.
  • 11.
    Rogan, C. Kinematical variables towards new dynamics at the LHC. arXiv 2010, arXiv:1006.2727.
  • 12.
    Buckley, M.R.; Lykken, J.D.; Rogan, C.; et al. Super-Razor and Searches for Sleptons and Charginos at the LHC. Phys. Rev. D 2014, 89, 055020.
  • 13.
    Jackson, P.; Rogan, C.; Santoni, M. Sparticles in motion: Analyzing compressed SUSY scenarios with a new method of event reconstruction. Phys. Rev. D 2017, 95, 035031.
  • 14.
    Jackson, P.; Rogan, C. Recursive Jigsaw Reconstruction: HEP event analysis in the presence of kinematic and combinatoric ambiguities. Phys. Rev. D 2017, 96, 112007.
  • 15.
    Graesser, M.L.; Shelton, J. Hunting Mixed Top Squark Decays. Phys. Rev. Lett. 2013, 111, 121802.
  • 16.
    Hayrapetyan, A.; Daumann, C.; Carrillo Montoya, C.A.; et al. Machine learning method for enforcing variable independence in background estimation with LHC data: ABCDisCoTEC. arXiv 2025, arXiv:2506.08826.
  • 17.
    Hayrapetyan, A.; Tumasyan, A.; Adam, W.; et al. The CMS Statistical Analysis and Combination Tool: Combine. Comput. Softw. Big Sci. 2024, 8, 19.
  • 18.
    The CMS Collaboration; Sirunyan, A.M.; Tumasyan, A.; et al. Search for supersymmetry in proton-proton collisions at 13 TeV in final states with jets and missing transverse momentum. J. High Energy Phys. 2019, 2019, 244
  • 19.
    Sirunyan, A.M.; Backhaus, M.; Berger, P.; et al. Searches for physics beyond the standard model with the MT2 variable in hadronic final states with and without disappearing tracks in proton-proton collisions at \(\sqrt{s}\) =13 TeV. Eur. Phys. J. C 2021, 80, 3.
  • 20.
    Sirunyan, A.M.; Tumasyan, A.; Adam, W.; et al. Search for supersymmetry in pp collisions at \(\sqrt{s}\) =13 TeV with 137 fb-1 in final states with a single lepton using the sum of masses of large-radius jets. Phys. Rev. D 2020, 101, 052010.
  • 21.
    Tumasyan, A.; Adam, W.; Andrejkovic, J.W.; et al. Search for supersymmetry in final states with a single electron or muon using angular correlations and heavy-object identification in proton-proton collisions at \(\sqrt{s}\) =13 TeV. JHEP 2023, 2023, 149.
  • 22.
    Sirunyan, A.M.; Tumasyan, A.; Adam, W.; et al. Search for supersymmetry in final states with two oppositely charged same-flavor leptons and missing transverse momentum in proton-proton collisions at \(\sqrt{s}\) =13 TeV. J. High Energy Phys. 2021, 2021, 1–62.
  • 23.
    Sirunyan, A.M.; Tumasyan, A.; Adam, W.; et al. Search for physics beyond the standard model in events with jets and two same-sign or at least three charged leptons in proton-proton collisions at \(\sqrt{s}\) =13 TeV. Eur. Phys. J. C 2020, 80, 1–43.
  • 24.
    Sirunyan, A.M.; Tumasyan, A.; Adam, W.; et al. Search for supersymmetry in proton-proton collisions at \(\sqrt{s}\) =13 TeV in events with high-momentum Z bosons and missing transverse momentum. J. High Energy Phys. 2020, 2020, 1–42.
  • 25.
    Tumasyan, A.; Adam, W.; Andrejkovic, J.W.; et al. Search for higgsinos decaying to two Higgs bosons and missing transverse momentum in proton-proton collisions at \(\sqrt{s}\) =13 TeV. J. High Energy Phys. 2022, 2022, 14.
  • 26.
    CERN. Search for Supersymmetry in Hadronic and Leptonic Final States with Highly Lorentz-Boosted Objects at \(\sqrt{s}\) =13 TeV; CERN: Geneva, Switzerland, 2025.
  • 27.
    Sirunyan, A.M.; Tumasyan, A.; Adam, W.; et al. Search for top squark production in fully-hadronic final states in proton-proton collisions at \(\sqrt{s}\) =13 TeV. Phys. Rev. D 2021, 104, 052001,
  • 28.
    Sirunyan, A.M.; Tumasyan, A.; Adam, W.; et al. Search for direct top squark pair production in events with one lepton, jets, and missing transverse momentum at 13 TeV with the CMS experiment. J. High Energy Phys. 2020, 2020, 28
  • 29.
    Sirunyan, A.M.; Tumasyan, A.; Adam, W.; et al. Search for top squark pair production using dilepton final states in pp collision data collected at \(\sqrt{s}\) =13 TeV. Eur. Phys. J. C 2021, 81, 3.
  • 30.
    Tumasyan, A.; Adam, W.; Andrejkovic, J.W.; et al. Combined searches for the production of supersymmetric top quark partners in proton–proton collisions at \(\sqrt{s}\) =13 TeV. Eur. Phys. J. C 2021, 2021, 970.
  • 31.
    Tumasyan, A.; Adam, W.; Andrejkovic, J.W.; et al. Search for top squarks in the four-body decay mode with single lepton final states in proton-proton collisions at \(\sqrt{s}\) =13 TeV. J. High Energy Phys. 2023, 2023, 60.
  • 32.
    Tumasyan, A.; Adam, W.; Andrejkovic, J.W.; et al. Search for top squark pair production in a final state with at least one hadronically decaying tau lepton in proton-proton collisions at \(\sqrt{s}\) =13 TeV. J. High Energy Phys. 2023, 2023, 110.
  • 33.
    Tumasyan, A.; Adam, W.; Andrejkovic, J.W.; et al. Search for electroweak production of charginos and neutralinos in proton-proton collisions at \(\sqrt{s}\) =13 TeV. J. High Energy Phys. 2022, 2022, 147.
  • 34.
    CERN. Search for Charginos and Stops in 2LOS Final State (Run 2 Legacy); CERN: Geneva, Switzerland, 2024.
  • 35.
    Tumasyan, A.; Adam, W.; Andrejkovic, J.W.; et al. Search for electroweak production of charginos and neutralinos at \(\sqrt{s}\) =13 TeV in final states containing hadronic decays of WW, WZ, or WH and missing transverse momentum. Phys. Lett. B 2023, 842, 137460.
  • 36.
    Tumasyan, A.; Adam, W.; Andrejkovic, J.W.; et al. Search for chargino-neutralino production in events with Higgs and W bosons using 137 fb-1 of proton-proton collisions at \(\sqrt{s}\) =13 TeV. J. High Energy Phys. 2021, 2021, 45.
  • 37.
    CERN. Search for Z’ Bosons Decaying into Charginos in Final States with Two Oppositely Charged Leptons and Missing Transverse Momentum; CERN: Geneva, Switzerland, 2025.
  • 38.
    Tumasyan, A.; Adam, W.; Andrejkovic, J.W.; et al. Search for direct pair production of supersymmetric partners of τ leptons in the final state with two hadronically decaying τ leptons and missing transverse momentum in proton-proton collisions at \(\sqrt{s}\) =13 TeV. Phys. Rev. D 2023, 108, 012011.
  • 39.
    CERN. General Search for Supersymmetric Particles in Scenarios with Compressed Mass Spectra Using Proton-Proton Collisions at \(\sqrt{s}\) =13 TeV; CERN: Geneva, Switzerland, 2024.
  • 40.
    Tumasyan, A.; Adam, W.; Andrejkovic, J.W.; et al. 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. J. High Energy Phys. 2022, 2022, 91.
  • 41.
    CERN. Search for new physics with compressed mass spectra in final states with soft leptons and missing transverse energy in proton-proton collisions at \(\sqrt{s}\) =13 TeV. In Technical Report; CERN: Geneva, Switzerland, 2025.
  • 42.
    CERN. Search for Higgsinos in Final States with Low-Momentum Lepton-Track Pairs at 13 TeV; CERN: Geneva, Switzerland, 2025.
  • 43.
    CERN. Search for Compressed Electroweakinos with Low-Momentum Isolated Tracks; CERN: Geneva, Switzerland, 2025.
  • 44.
    Sirunyan, A.M.; Tumasyan, A.; Adam, W.; et al. Search for Supersymmetry with a Compressed Mass Spectrum in Events with a Soft τ Lepton, a Highly Energetic Jet, and Large Missing Transverse Momentum in Proton-Proton Collisions at √s = TeV. Phys. Rev. Lett. 2020, 124, 041803.
  • 45.
    CERN. Search for New Physics Using Single-Lepton Events with High jet and b jet Multiplicities in Proton-Proton Collisions at \(\sqrt{s}\) =13 TeV; CERN: Geneva, Switzerland, 2025.
  • 46.
    Hayrapetyan, A.; Tumasyan, A.; Adam, W.; et al. Search for stealth supersymmetry in final states with two photons, jets, and low missing transverse momentum in proton-proton collisions at \(\sqrt{s}\) =13 TeV. Phys. Rev. D 2024, 109, 112009.
  • 47.
    Sirunyan, A.M.; Tumasyan, A.; Adam, W.; et al. Search for top squarks in final states with two top quarks and several light-flavor jets in proton-proton collisions at \(\sqrt{s}\) =13 TeV. Phys. Rev. D 2021, 104, 032006.
  • 48.
    Chekhovsky, V.; Erbacher, R.; Carrillo Montoya, C.A.; et al. Search for top squarks in final states with many light- flavor jets and 0, 1, or 2 charged leptons in proton-proton collisions at \(\sqrt{s}\) =13 TeV. J. High Energy Phys. 2025. https://doi.org/10.48550/arXiv.2506.08825.
  • 49.
    Hayrapetyan, A.; Tumasyan, A.; Adam, W.; et al. Search for new physics in jet scaling patterns of multilepton events at \(\sqrt{s}\) =13 TeV. arXiv 2025, arXiv:2503.06726.
  • 50.
    Hayrapetyan, A.; Tumasyan, A.; Adam, W.; et al. Search for heavy long-lived charged particles with large ionization energy loss in proton-proton collisions at \(\sqrt{s}\) =13 TeV. J. High Energy Phys. 2025, 4, 109.
  • 51.
    Sirunyan, A.M.; Tumasyan, A.; Adam, W.; et al. Search for disappearing tracks in proton-proton collisions at \(\sqrt{s}\) =13 TeV. Phys. Lett. B 2020, 806, 135502.
  • 52.
    Hayrapetyan, A.; Tumasyan, A.; Adam, W.; et al. Search for supersymmetry in final states with disappearing tracks in proton-proton collisions at \(\sqrt{s}\) =13 TeV. Phys. Rev. D 2024, 109, 1–37.
  • 53.
    Sirunyan, A.M.; Tumasyan, A.; Adam, W.; et al. Search for long-lived particles using delayed photons in proton-proton collisions at \(\sqrt{s}\) =13 TeV. Phys. Rev. D 2019, 100, 112003.
  • 54.
    Sirunyan, A.M.; Tumasyan, A.; Adam, W.; et al. Search for long-lived particles using nonprompt jets and missing transverse momentum with proton-proton collisions at \(\sqrt{s}\) =13 TeV. Phys. Lett. B 2019, 797, 134876.
  • 55.
    Sirunyan, A.M.; Tumasyan, A.; Adam, W.; et al. Search for long-lived particles decaying to jets with displaced vertices in proton-proton collisions at \(\sqrt{s}\) =13 TeV. Phys. Rev. D 2021, 104, 052011.
  • 56.
    Hayrapetyan, A.; Tumasyan, A.; Adam, W.; et al. Search for long-lived particles using displaced vertices and missing transverse momentum in proton-proton collisions at √s =13 TeV. Phys. Rev. D 2024, 109, 112005.
  • 57.
    CERN. Search for Long-Lived Particles Using Displaced Vertices with Low-Momentum Tracks and Missing Transverse Momentum in Proton-Proton Collisions at \(\sqrt{s}\) =13 TeV; CERN: Geneva, Switzerland, 2025.
  • 58.
    Sirunyan, A.M.; Tumasyan, A.; Adam, W.; et al. Search for long-lived particles decaying into displaced jets in proton-proton collisions at \(\sqrt{s}\) =13 TeV. Phys. Rev. D 2019, 99, 032011.
  • 59.
    Sirunyan, A.M.; Tumasyan, A.; Adam, W.; et al. Search for long-lived particles using displaced jets in proton-proton collisions at \(\sqrt{s}\) =13 TeV. Phys. Rev. D 2021, 104, 012015.
  • 60.
    Tumasyan, A.; Adam, W.; Andrejkovic, J.W.; et al. Search for long-lived particles using out-of-time trackless jets in proton-proton collisions at \(\sqrt{s}\) =13 TeV. J. High Energy Phys. 2023, 2023, 210.
  • 61.
    Hayrapetyan, A.; Tumasyan, A.; Adam, W.; et al. Combined search for electroweak production of winos, binos, higgsinos, and sleptons in proton-proton collisions at \(\sqrt{s}\) =13 TeV. Phys. Rev. D 2024, 109, 112001.
  • 62.
    CERN. Phenomenological MSSM Interpretation of CMS Searches in pp Collisions at 13 TeV; CERN: Geneva, Switzerland, 2024.
Share this article:
Download PDF
DOI
10.53941/hihep.2025.100018
Issue
Volume 1, Issue 2
How to Cite
Sekmen, S. Supersymmetry Searches in CMS Run 2: A Complete Review. Highlights in High-Energy Physics 2025, 1 (2), 18. https://doi.org/10.53941/hihep.2025.100018.
RIS
BibTex
Copyright & License
article copyright Image
Copyright (c) 2025 by the authors.