Exploring sensitivity to NMSSM signatures with low missing transverse energy at the LHC

  • A. Titterton
  • U. Ellwanger
  • H. U. Flaecher
  • S. Moretti
  • C. H. Shepherd-Themistocleous
Open Access
Regular Article - Theoretical Physics


We examine scenarios in the Next-to-Minimal Supersymmetric Standard Model (NMSSM), where pair-produced squarks and gluinos decay via two cascades, each ending in a stable neutralino as Lightest Supersymmetric Particle (LSP) and a Standard Model (SM)-like Higgs boson, with mass spectra such that the missing transverse energy, E T miss , is very low. Performing two-dimensional parameter scans and focusing on the hadronic \( H\to b\overline{b} \) decay giving a \( b\overline{b}b\overline{b}+{E}_{\mathrm{T}}^{\mathrm{miss}} \) final state we explore the sensitivity of a current LHC general-purpose jets + E T miss analysis to such scenarios.


Supersymmetry Phenomenology 


Open Access

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  1. [1]
    Yu. A. Golfand and E.P. Likhtman, Extension of the Algebra of Poincaré Group Generators and Violation of p Invariance, JETP Lett. 13 (1971) 323 [Pisma Zh. Eksp. Teor. Fiz. 13 (1971) 452] [INSPIRE].
  2. [2]
    J. Wess and B. Zumino, Supergauge Transformations in Four-Dimensions, Nucl. Phys. B 70 (1974) 39 [INSPIRE].
  3. [3]
    R. Barbieri, S. Ferrara and C.A. Savoy, Gauge Models with Spontaneously Broken Local Supersymmetry, Phys. Lett. B 119 (1982) 343 [INSPIRE].
  4. [4]
    H.P. Nilles, Supersymmetry, Supergravity and Particle Physics, Phys. Rept. 110 (1984) 1 [INSPIRE].ADSCrossRefGoogle Scholar
  5. [5]
    CMS collaboration, Search for natural and split supersymmetry in proton-proton collisions at \( \sqrt{s}=13 \) TeV in final states with jets and missing transverse momentum, JHEP 05 (2018) 025 [arXiv:1802.02110] [INSPIRE].
  6. [6]
    L. Randall and D. Tucker-Smith, Dijet Searches for Supersymmetry at the LHC, Phys. Rev. Lett. 101 (2008) 221803 [arXiv:0806.1049] [INSPIRE].ADSCrossRefGoogle Scholar
  7. [7]
    CMS collaboration, Search strategy for exclusive multi-jet events from supersymmetry at CMS, CMS-PAS-SUS-09-001 [INSPIRE].
  8. [8]
    ATLAS collaboration, Search for squarks and gluinos in final states with jets and missing transverse momentum using 36 fb −1 of \( \sqrt{s}=13 \) TeV pp collision data with the ATLAS detector, Phys. Rev. D 97 (2018) 112001 [arXiv:1712.02332] [INSPIRE].
  9. [9]
    ATLAS collaboration, Search for supersymmetry in final states with missing transverse momentum and multiple b-jets in proton-proton collisions at \( \sqrt{s}=13 \) TeV with the ATLAS detector, JHEP 06 (2018) 107 [arXiv:1711.01901] [INSPIRE].
  10. [10]
    ATLAS collaboration, Search for a scalar partner of the top quark in the jets plus missing transverse momentum final state at \( \sqrt{s}=13 \) TeV with the ATLAS detector, JHEP 12 (2017) 085 [arXiv:1709.04183] [INSPIRE].
  11. [11]
    CMS collaboration, Search for new phenomena with the M T2 variable in the all-hadronic final state produced in proton-proton collisions at \( \sqrt{s}=13 \) TeV, Eur. Phys. J. C 77 (2017) 710 [arXiv:1705.04650] [INSPIRE].
  12. [12]
    CMS collaboration, Search for supersymmetry in multijet events with missing transverse momentum in proton-proton collisions at 13 TeV, Phys. Rev. D 96 (2017) 032003 [arXiv:1704.07781] [INSPIRE].
  13. [13]
    CMS collaboration, Search for direct production of supersymmetric partners of the top quark in the all-jets final state in proton-proton collisions at \( \sqrt{s}=13 \) TeV, JHEP 10 (2017) 005 [arXiv:1707.03316] [INSPIRE].
  14. [14]
    U. Ellwanger, C. Hugonie and A.M. Teixeira, The Next-to-Minimal Supersymmetric Standard Model, Phys. Rept. 496 (2010) 1 [arXiv:0910.1785] [INSPIRE].ADSMathSciNetCrossRefGoogle Scholar
  15. [15]
    U. Ellwanger and A.M. Teixeira, Excessive Higgs pair production with little MET from squarks and gluinos in the NMSSM, JHEP 04 (2015) 172 [arXiv:1412.6394] [INSPIRE].ADSCrossRefGoogle Scholar
  16. [16]
    U. Ellwanger and A.M. Teixeira, NMSSM with a singlino LSP: possible challenges for searches for supersymmetry at the LHC, JHEP 10 (2014) 113 [arXiv:1406.7221] [INSPIRE].ADSCrossRefGoogle Scholar
  17. [17]
    J.E. Kim and H.P. Nilles, The mu Problem and the Strong CP Problem, Phys. Lett. B 138 (1984) 150 [INSPIRE].
  18. [18]
    J. Alwall et al., The automated computation of tree-level and next-to-leading order differential cross sections and their matching to parton shower simulations, JHEP 07 (2014) 079 [arXiv:1405.0301] [INSPIRE].ADSCrossRefGoogle Scholar
  19. [19]
    W. Beenakker, R. Hopker and M. Spira, PROSPINO: A program for the production of supersymmetric particles in next-to-leading order QCD, hep-ph/9611232 [INSPIRE].
  20. [20]
    T. Sjöstrand, S. Mrenna and P.Z. Skands, A Brief Introduction to PYTHIA 8.1, Comput. Phys. Commun. 178 (2008) 852 [arXiv:0710.3820] [INSPIRE].
  21. [21]
    DELPHES 3 collaboration, J. de Favereau et al., DELPHES 3, A modular framework for fast simulation of a generic collider experiment, JHEP 02 (2014) 057 [arXiv:1307.6346] [INSPIRE].
  22. [22]
    D. Das, U. Ellwanger and A.M. Teixeira, NMSDECAY: A Fortran Code for Supersymmetric Particle Decays in the Next-to-Minimal Supersymmetric Standard Model, Comput. Phys. Commun. 183 (2012) 774 [arXiv:1106.5633] [INSPIRE].
  23. [23]
    M. Muhlleitner, A. Djouadi and Y. Mambrini, SDECAY: A Fortran code for the decays of the supersymmetric particles in the MSSM, Comput. Phys. Commun. 168 (2005) 46 [hep-ph/0311167] [INSPIRE].
  24. [24]
    CMS collaboration, Interpretation of Searches for Supersymmetry with simplified Models, Phys. Rev. D 88 (2013) 052017 [arXiv:1301.2175] [INSPIRE].
  25. [25]
    CMS collaboration, Identification of double-b quark jets in boosted event topologies, CMS-PAS-BTV-15-002 [INSPIRE].
  26. [26]
    ATLAS collaboration, Boosted \( H\to b\overline{b} \) Tagger in Run II, PoS(ICHEP2016)1129.
  27. [27]
    CMS collaboration, Search for Physics Beyond the Standard Model in Events with High-Momentum Higgs Bosons and Missing Transverse Momentum in Proton-Proton Collisions at 13 TeV, Phys. Rev. Lett. 120 (2018) 241801 [arXiv:1712.08501] [INSPIRE].

Copyright information

© The Author(s) 2018

Authors and Affiliations

  1. 1.H.H. Wills Physics LaboratoryUniversity of BristolBristolUnited Kingdom
  2. 2.School of Physics and AstronomyUniversity of SouthamptonSouthamptonUnited Kingdom
  3. 3.Particle Physics Department, Rutherford Appleton LaboratoryOxonUnited Kingdom
  4. 4.Laboratoire de Physique Théorique, UMR 8627, CNRS, Université de Paris-SudUniversité Paris-SaclayOrsayFrance

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