Search for direct pair production of supersymmetric partners of $\tau$ leptons in the final state with two hadronically decaying $\tau$ leptons and missing transverse momentum in proton-proton collisions at $\sqrt{s}$ = 13 TeV

Abstract

A search for the direct production of a pair of $\tau$ sleptons, the supersymmetric partners of $\tau$ leptons, is presented. Each $\tau$ slepton is assumed to decay to a $\tau$ lepton and the lightest supersymmetric particle (LSP), which is assumed to be stable and to not interact in the detector, leading to an imbalance in the total reconstructed transverse momentum. The search is carried out in events identified as containing two $\tau$ leptons, each decaying to one or more hadrons and a neutrino, and significant transverse momentum imbalance. In addition to scenarios in which the $\tau$ sleptons decay promptly, the search also addresses scenarios in which the $\tau$ sleptons have sufficiently long lifetimes to give rise to nonprompt $\tau$ leptons. The data were collected in proton-proton collisions at a center-of-mass energy of 13 TeV at the CERN LHC with the CMS detector in 2016-2018, and correspond to an integrated luminosity of 138 fb${}^{-1}$. No significant excess is seen with respect to standard model expectations. Upper limits on cross sections for the pair production of $\tau$ sleptons are obtained in the framework of simplified models. In a scenario in which the $\tau$ sleptons are superpartners of left-handed $\tau$ leptons, and each undergoes a prompt decay to a $\tau$ lepton and a nearly massless LSP, $\tau$ slepton masses between 115 and 340 GeV are excluded. In a scenario in which the lifetime of the $\tau$ sleptons corresponds to $c{\tau }_0$ = 0.1 mm, where ${\tau }_0$ represents the mean proper lifetime of the $\tau$ slepton, masses between 150 and 220 GeV are excluded.

arXiv commentReplaced with the published version. Added the journal reference and the DOI. All the figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/SUS-21-001 (CMS Public Pages)

References in corpus (53)

• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• The anti-k_t jet clustering algorithm
• An Introduction to PYTHIA 8.2
• Nine-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Parameter Results
• FastJet user manual
• Supersymmetric Dark Matter
• Asymptotic formulae for likelihood-based tests of new physics
• A general framework for implementing NLO calculations in shower Monte Carlo programs: the POWHEG BOX
• A New Method for Combining NLO QCD with Shower Monte Carlo Algorithms
• Matching NLO QCD computations with Parton Shower simulations: the POWHEG method
• Parton distributions for the LHC Run II
• Confidence Level Computation for Combining Searches with Small Statistics
• Particle-flow reconstruction and global event description with the CMS detector
• Measuring masses of semi-invisibly decaying particles pair produced at hadron colliders
• The CMS trigger system
• Single-top Wt-channel production matched with parton showers using the POWHEG method
• Event generator tunes obtained from underlying event and multiparton scattering measurements
• Jet energy scale and resolution in the CMS experiment in pp collisions at 8 TeV
• Identification of heavy-flavour jets with the CMS detector in pp collisions at 13 TeV
• m_T2 : the truth behind the glamour
• Simplified Models for LHC New Physics Searches
• Extraction and validation of a new set of CMS PYTHIA8 tunes from underlying-event measurements
• The Production of Charginos/Neutralinos and Sleptons at Hadron Colliders
• Simplified Models for a First Characterization of New Physics at the LHC
• Performance of the CMS Level-1 trigger in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Precision luminosity measurement in proton-proton collisions at $\sqrt{s}=$ 13 TeV in 2015 and 2016 at CMS
• Searches for supersymmetric particles in e+e- collisions up to 208 GeV and interpretation of the results within the MSSM
• Search for top-squark pair production in the single-lepton final state in pp collisions at sqrt(s) = 8 TeV
• Performance of missing transverse momentum reconstruction in proton-proton collisions at $\sqrt{s}=$ 13 TeV using the CMS detector
• Performance of reconstruction and identification of $\tau$ leptons decaying to hadrons and ${\nu }_{\tau }$ in pp collisions at $\sqrt{s}=$ 13 TeV
• Model-Independent Jets plus Missing Energy Searches
• Search for Anomalous Production of Di-lepton Events with Missing Transverse Momentum in e+e- Collisions at sqrt(s) = 183-209 GeV
• Interpretation of searches for supersymmetry with simplified models
• Search for Scalar Leptons and Scalar Quarks at LEP
• Proposed Post-LEP Benchmarks for Supersymmetry
• Revisiting slepton pair production at the Large Hadron Collider
• Search for scalar leptons in e+e- collisions at centre-of-mass energies up to 209GeV
• Search for the electroweak production of supersymmetric particles in $\sqrt{s}$=8 TeV $pp$ collisions with the ATLAS detector
• Bisection-based asymmetric MT2 computation: a higher precision calculator than existing symmetric methods
• Search for direct stau production in events with two hadronic $\tau$-leptons in $\sqrt{s}=13$ TeV $pp$ collisions with the ATLAS detector
• Search for the direct production of charginos, neutralinos and staus in final states with at least two hadronically decaying taus and missing transverse momentum in $pp$ collisions at $\sqrt{s}$ = 8 TeV with the ATLAS detector
• Natural Dark Matter in SUSY GUTs with Non-universal Gaugino Masses
• Determining the Dark Matter Relic Density in the Minimal Supergravity Stau-Neutralino Coannihilation Region at the Large Hadron Collider
• Identification of hadronic tau lepton decays using a deep neural network
• Long-Lived Staus and Displaced Leptons at the LHC
• Search for displaced leptons in $\sqrt{s}=13$ TeV $pp$ collisions with the ATLAS detector
• Revisiting light neutralino scenarios in the MSSM
• Searches for Gauge-Mediated Supersymmetry Breaking Topologies in e+e- collisions at LEP2
• Search for direct pair production of supersymmetric partners to the $\tau$ lepton in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Light neutralino dark matter in the MSSM and its implication for LHC searches for staus
• An embedding technique to determine $\tau \tau$ backgrounds in proton-proton collision data
• Potential discovery of staus through heavy Higgs boson decays at the LHC
• Search for electroweak production of charginos in final states with two tau leptons in pp collisions at sqrt(s) = 8 TeV

Cited by in corpus (7)

• $SU(2{)}_L$ triplet scalar as the origin of the 95 GeV excess?
• Custodial Symmetry Breaking and Higgs Signatures at the LHC
• Current Status of the Muon g-2 Interpretations within Two-Higgs-Doublet Models
• Low-scale leptogenesis and dark matter in a three-loop radiative seesaw model
• The Right-Handed Slepton Bulk Region for Dark Matter in Generalized No-scale $\mathcal{F}$-$SU(5)$ with Effective Super-Natural Supersymmetry
• Early Universe hypercharge breaking and neutrino mass generation
• Light right-handed Smuons at the LHC: Natural dark matter and $g_{\mu }-2$ in an unexplored realm of the pMSSM