Search for disappearing tracks in proton-proton collisions at sqrt(s) = 8 TeV

Abstract

A search is presented for long-lived charged particles that decay within the CMS detector and produce the signature of a disappearing track. Disappearing tracks are identified as those with little or no associated calorimeter energy deposits and with missing hits in the outer layers of the tracker. The search uses proton-proton collision data recorded at sqrt(s) = 8 TeV that corresponds to an integrated luminosity of 19.5 inverse femtobarns. The results of the search are interpreted in the context of the anomaly-mediated supersymmetry breaking (AMSB) model. The number of observed events is in agreement with the background expectation, and limits are set on the cross section of direct electroweak chargino production in terms of the chargino mass and mean proper lifetime. At 95% confidence level, AMSB models with a chargino mass less than 260 GeV, corresponding to a mean proper lifetime of 0.2 ns, are excluded.

arXiv commentReplaced with published version. Added journal reference and DOI

References in corpus (33)

• PYTHIA 6.4 Physics and Manual
• PYTHIA 6.2 Physics and Manual
• 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
• 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
• Confidence Level Computation for Combining Searches with Small Statistics
• Out Of This World Supersymmetry Breaking
• Gaugino Mass without Singlets
• Description and performance of track and primary-vertex reconstruction with the CMS tracker
• Determination of Jet Energy Calibration and Transverse Momentum Resolution in CMS
• SUSY Les Houches Accord: Interfacing SUSY Spectrum Calculators, Decay Packages, and Event Generators
• NLO single-top production matched with shower in POWHEG: s- and t-channel contributions
• The PDF4LHC Working Group Interim Recommendations
• The Production of Charginos/Neutralinos and Sleptons at Hadron Colliders
• Mini-Split
• ISAJET 7.37: A Monte Carlo Event Generator for $pp$, $\bar{p}p$, and $e^{+}{e}^{-}$ Interactions
• Measurements of Inclusive W and Z Cross Sections in pp Collisions at sqrt(s)=7 TeV
• The PDF4LHC Working Group Interim Report
• Searches for long-lived charged particles in pp collisions at sqrt(s) = 7 and 8 TeV
• Pure Gravity Mediation with m_{3/2} = 10-100TeV
• Mass Splitting between Charged and Neutral Winos at Two-Loop Level
• Search for charginos nearly mass-degenerate with the lightest neutralino based on a disappearing-track signature in pp collisions at sqrt(s) = 8 TeV with the ATLAS detector
• Simply Unnatural Supersymmetry
• A Non-Standard String/SUSY Scenario and its Phenomenological Implications
• Supersymmetry production cross sections in pp collisions at sqrt{s} = 7 TeV
• Spread Supersymmetry with Wino LSP: Gluino and Dark Matter Signals
• Searching for Invisible and Almost Invisible Particles at e^+e^- Colliders
• Search for heavy long-lived charged particles in pp collisions at sqrt(s) = 7 TeV
• Search for fractionally charged particles in pp collisions at sqrt(s) = 7 TeV
• The End of the CMSSM Coannihilation Strip is Nigh

Cited by in corpus (75)

• From the trees to the forest: a review of radiative neutrino mass models
• Searching for long-lived particles beyond the Standard Model at the Large Hadron Collider
• Anatomy of the Inert Two Higgs Doublet Model in the light of the LHC and non-LHC Dark Matter Searches
• Dark Matter Searches at Colliders
• Search for long-lived charginos based on a disappearing-track signature in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Combined search for electroweak production of charginos and neutralinos in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Searches for physics beyond the standard model with the $M_{T2}$ variable in hadronic final states with and without disappearing tracks in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Coannihilation without chemical equilibrium
• LHC-friendly minimal freeze-in models
• Search for top-squark pair production in final states with one lepton, jets, and missing transverse momentum using 36 fb${}^{-1}$ of $\sqrt{s}=13$ TeV $pp$ collision data with the ATLAS detector
• Towards the Final Word on Neutralino Dark Matter
• Constraining heavy dark matter with cosmic-ray antiprotons
• Electroweak phase transition in the $\Sigma$SM - I: Dimensional reduction
• Higgsino Dark Matter or Not: Role of Disappearing Track Searches at the LHC and Future Colliders
• GUT-constrained supersymmetry and dark matter in light of the new $(g-2{)}_{\mu }$ determination
• Search for disappearing tracks as a signature of new long-lived particles in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• The inert doublet model in the light of Fermi-LAT gamma-ray data: a global fit analysis
• Accessing the core of naturalness, nearly degenerate higgsinos, at the LHC
• Search for metastable heavy charged particles with large ionization energy loss in pp collisions at $\sqrt{s}=13$ TeV using the ATLAS experiment
• Constraints on the pMSSM, AMSB model and on other models from the search for long-lived charged particles in proton-proton collisions at sqrt(s) = 8 TeV
• Electric Dipole Moments in Natural Supersymmetry
• Revisiting Big-Bang Nucleosynthesis Constraints on Dark-Matter Annihilation
• Constraining the minimal dark matter fiveplet with LHC searches
• Electroweak Dark Matter at Future Hadron Colliders
• Neutralinos and Sleptons at the LHC in Light of Muon $(g-2{)}_{\mu }$
• Search for metastable heavy charged particles with large ionisation energy loss in $pp$ collisions at $\sqrt{s}$ = 8 TeV using the ATLAS experiment
• Exceptional Composite Dark Matter
• Wino Dark Matter in light of the AMS-02 2015 Data
• Dark Matter in $\gamma$ lines: Galactic Center vs dwarf galaxies
• Tracking down Quirks at the Large Hadron Collider
• Simplified Models for Displaced Dark Matter Signatures
• Confronting Dark Matter Freeze-In during Reheating with Constraints from Inflation
• Probing the inert doublet model using jet substructure with a multivariate analysis
• Fermionic Semi-Annihilating Dark Matter
• Cosmological constraints on dark matter annihilation and decay: Cross-correlation analysis of the extragalactic $\gamma$-ray background and cosmic shear
• A Note on Physical Mass and the Thermodynamics of AdS-Kerr Black Holes
• Long-lived bino and wino in supersymmetry with heavy scalars and higgsinos
• Scalar Multiplet Dark Matter in a Fast Expanding Universe: resurrection of the desert region
• Two-loop mass splittings in electroweak multiplets: winos and minimal dark matter
• Searching for signatures of $E_6$
• Detecting long-lived multi-charged particles in neutrino mass models with MoEDAL
• Lepton Number Violation: Seesaw Models and Their Collider Tests
• Illuminating New Electroweak States at Hadron Colliders
• Systematic approach to $B$-physics anomalies and $t$-channel dark matter
• Precise probing of the inert Higgs-doublet model at the LHC
• Power Corrections to the Universal Heavy WIMP-Nucleon Cross Section
• Well-tempered n-plet dark matter
• Phenomenology of the Inert Doublet Model with a global U(1) symmetry
• Novel signatures for long-lived particles at the LHC
• LHC phenomenology of natural MSSM with non-universal gaugino masses at the unification scale
• Electroweak-Charged Bound States as LHC Probes of Hidden Forces
• Searching for Metastable Particles with Sub-Millimeter Displaced Vertices at Hadron Colliders
• Constraints on non-universal gaugino mass scenario using the latest LHC data
• Same-Sign Dilepton Excesses and Light Top Squarks
• Natural Supersymmetry from Extra Dimensions
• Diphoton Signals from Colorless Hidden Quarkonia
• Twisted Black Hole Is Taub-NUT
• Supersymmetric Higgs-portal and X-ray lines
• Status of the 98 - 125 GeV Higgs scenario with updated LHC-8 data
• TeV-scale Pseudo-Dirac Seesaw Mechanisms in an E${}_6$ Inspired Model
• Revisiting gravitino dark matter in thermal leptogenesis
• Light Higgsino as the tail of the $\mu$-$B_{\mu }$ solution
• Low Fine Tuning in Yukawa-deflected Gauge Mediation
• Bottom-Tau Unification in Supersymmetric Model with Anomaly-Mediation
• Exploring Uncharted Soft Displaced Vertices in Open Data
• Dirac Triplet Extension of the MSSM
• Flavors of Supersymmetry Beyond Vanilla
• Searches for supersymmetry in CMS
• Getting Stuck: Using Monosignatures to Test Highly Ionizing Particles
• Unified Maximally Natural Supersymmetry
• Thinking outside the beamspot: Other SUSY searches at the LHC (long-lived particles and R-parity violation)
• Particle physics and cosmology with high-scale SUSY breaking in five-dimensional supergravity models
• Search for disappearing tracks
• Semi-Annihilating Wino-Like Dark Matter
• New signatures of Dirac neutralino dark matter