Search for direct pair production of supersymmetric partners to the $\tau$ lepton in proton-proton collisions at $\sqrt{s}=$ 13 TeV

Abstract

A search is presented for $\tau$ slepton pairs produced in proton-proton collisions at a center-of-mass energy of 13 TeV. The search is carried out in events containing two $\tau$ leptons in the final state, on the assumption that each $\tau$ slepton decays primarily to a $\tau$ lepton and a neutralino. Events are considered in which each $\tau$ lepton decays to one or more hadrons and a neutrino, or in which one of the $\tau$ leptons decays instead to an electron or a muon and two neutrinos. The data, collected with the CMS detector in 2016 and 2017, correspond to an integrated luminosity of 77.2 fb${}^{-1}$. The observed data are consistent with the standard model background expectation. The results are used to set 95% confidence level upper limits on the cross section for $\tau$ slepton pair production in various models for $\tau$ slepton masses between 90 and 200 GeV and neutralino masses of 1, 10, and 20 GeV. In the case of purely left-handed $\tau$ slepton production and decay to a $\tau$ lepton and a neutralino with a mass of 1 GeV, the strongest limit is obtained for a $\tau$ slepton mass of 125 GeV at a factor of 1.14 larger than the theoretical cross section.

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-18-006 (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
• Identification of heavy-flavour jets with the CMS detector in pp collisions at 13 TeV
• Performance of electron reconstruction and selection with the CMS detector in proton-proton collisions at sqrt(s) = 8 TeV
• m_T2 : the truth behind the glamour
• Performance of the CMS muon detector and muon reconstruction with proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Simplified Models for LHC New Physics Searches
• Extraction and validation of a new set of CMS PYTHIA8 tunes from underlying-event measurements
• Simplified Models for a First Characterization of New Physics at the LHC
• 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
• Light Scalar Top Quarks and Supersymmetric Dark Matter
• Performance of missing transverse momentum reconstruction in proton-proton collisions at $\sqrt{s}=$ 13 TeV using the CMS detector
• Search for neutral MSSM Higgs bosons decaying to a pair of tau leptons in pp collisions
• Performance of reconstruction and identification of $\tau$ leptons decaying to hadrons and ${\nu }_{\tau }$ in pp collisions at $\sqrt{s}=$ 13 TeV
• On measuring the masses of pair-produced semi-invisibly decaying particles at hadron colliders
• 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
• Dark Matter, Light Stops and Electroweak Baryogenesis
• Proposed Post-LEP Benchmarks for Supersymmetry
• Revisiting slepton pair production at the Large Hadron Collider
• Bisection-based asymmetric MT2 computation: a higher precision calculator than existing symmetric methods
• Search for the electroweak production of supersymmetric particles in $\sqrt{s}$=8 TeV $pp$ collisions with the ATLAS detector
• Search for scalar leptons in e+e- collisions at centre-of-mass energies up to 209GeV
• 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
• Supersymmetric particle mass measurement with the boost-corrected contransverse mass
• Model-Independent Comparison of Direct vs. Indirect Detection of Supersymmetric Dark Matter
• Measurements of $\mathrm{t}\overline{\mathrm{t}}$ differential cross sections in proton-proton collisions at $\sqrt{s}=$ 13 TeV using events containing two leptons
• 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
• The SysCalc code: A tool to derive theoretical systematic uncertainties
• Search for supersymmetry in events with a $\tau$ lepton pair and missing transverse momentum in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Revisiting light neutralino scenarios in the MSSM
• Light neutralino dark matter in the MSSM and its implication for LHC searches for staus
• 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 (20)

• Supersymmetric Interpretation of the Muon $g-2$ Anomaly
• Search for direct stau production in events with two hadronic $\tau$-leptons in $\sqrt{s}=13$ TeV $pp$ collisions with the ATLAS detector
• Identification of hadronic tau lepton decays using a deep neural network
• The Weak Scale as a Trigger
• $SU(2{)}_L$ triplet scalar as the origin of the 95 GeV excess?
• Muon g-2 vs LHC Run 2 in Supersymmetric Models
• Sliding Naturalness: Cosmological Selection of the Weak Scale
• Search for supersymmetry with a compressed mass spectrum in events with a soft $\tau$ lepton, a highly energetic jet, and large missing transverse momentum in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• 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
• Natural Twin Neutralino Dark Matter
• Combined search for electroweak production of winos, binos, higgsinos, and sleptons in proton-proton collisions at $\sqrt{s}$ = 13 TeV
• Mixed modulus and anomaly mediation in light of the muon $g-2$ anomaly
• Muon g-2, Neutralino Dark Matter and Stau NLSP
• Scalar Dark Matter with a $\mu \tau$ Flavored Mediator
• Machine-Learning Performance on Higgs-Pair Production Associated with Dark Matter at the LHC
• Tau lepton identification and reconstruction: a new frontier for jet-tagging ML algorithms
• Search strategy for gluinos at the LHC with a Higgs boson decaying into tau leptons
• Electroweakino and slepton pair production at the LHC in NLO+NLL with resummation-improved PDFs
• Identification of tau leptons using a convolutional neural network with domain adaptation
• Search potential for direct slepton pair production at the CEPC with $\sqrt{s}$ = 360 GeV