Hunting for Scalar Lepton Partners at Future Electron Colliders

Abstract

New physics close to the electroweak scale is well motivated by a number of theoretical arguments. However, colliders, most notably the Large Hadron Collider (LHC), have failed to deliver evidence for physics beyond the Standard Model. One possibility for how new electroweak-scale particles could have evaded detection so far is if they carry only electroweak charge, i.e. are color neutral. Future $e^{+}{e}^{-}$ colliders are prime tools to study such new physics. Here, we investigate the sensitivity of $e^{+}{e}^{-}$ colliders to scalar partners of the charged leptons, known as sleptons in supersymmetric extensions of the Standard Model. In order to allow such scalar lepton partners to decay, we consider models with an additional neutral fermion, which in supersymmetric models corresponds to a neutralino. We demonstrate that future $e^{+}{e}^{-}$ colliders would be able to probe most of the kinematically accessible parameter space, i.e. where the mass of the scalar lepton partner is less than half of the collider's center-of-mass energy, with only a few days of data. Besides constraining more general models, this would allow to probe some well motivated dark matter scenarios in the Minimal Supersymmetric Standard Model, in particular the incredible bulk and stau co-annihilation scenarios.

arXiv comment21 pages, 14 figures, 4 tables. v2: matches journal version

References in corpus (40)

• 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
• An Introduction to PYTHIA 8.2
• DELPHES 3, A modular framework for fast simulation of a generic collider experiment
• The Soft Supersymmetry-Breaking Lagrangian: Theory and Applications
• Calculations of Neutralino-Stau Coannihilation Channels and the Cosmologically Relevant Region of MSSM Parameter Space
• Neutralino-Stau Coannihilation and the Cosmological Upper Limit on the Mass of the Lightest Supersymmetric Particle
• Search for direct production of charginos, neutralinos and sleptons in final states with two leptons and missing transverse momentum in pp collisions at sqrt(s) = 8 TeV with the ATLAS detector
• Particle physics catalysis of thermal Big Bang Nucleosynthesis
• Improving the Weizsäcker-Williams Approximation in Electron-Proton Collisions
• Search for electroweak production of supersymmetric particles in final states with two or three leptons at $\sqrt{s}=13$ TeV with the ATLAS detector
• Search for long-lived charged particles in proton-proton collisions at sqrt(s) = 13 TeV
• Search for heavy charged long-lived particles in the ATLAS detector in 36.1 fb${}^{-1}$ of proton-proton collision data at $\sqrt{s}=13$ TeV
• Search for electroweak production of supersymmetric states in scenarios with compressed mass spectra at $\sqrt{s}=13$ TeV with the ATLAS detector
• Contrasting Supersymmetry and Universal Extra Dimensions at the CLIC Multi-TeV e+e- Collider
• Confronting the Minimal Supersymmetric Standard Model with the Study of Scalar Leptons at Future Linear e+e- Colliders
• Probing Bino Contribution to Muon g-2
• Search for supersymmetric partners of electrons and muons in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Polarization of $\tau$ lepton from scalar tau decay as a probe of neutralino mixing
• Polarisation in Sfermion Decays: Determining \tanβand Trilinear Couplings
• The End of the CMSSM Coannihilation Strip is Nigh
• Slepton Production at e+e- and e-e- Linear Colliders
• Constraints on Supersymmetric Models from Catalytic Primordial Nucleosynthesis of Beryllium
• WIMP Dark Matter at the International Linear Collider
• Discriminating spin through quantum interference
• Phenomenology of Dirac Neutralino Dark Matter
• Probing Compressed Sleptons at the LHC using Vector Boson Fusion Processes
• MSSM dark matter and a light slepton sector: The Incredible Bulk
• Leptonic WIMP Coannihilation and the Current Dark Matter Search Strategy
• Selectron Studies at e-e- and e+e- Colliders
• Sparticle Discovery Potentials in the CMSSM and GUT-less Supersymmetry-Breaking Scenarios
• The ILC as a natural SUSY discovery machine and precision microscope: from light higgsinos to tests of unification
• Prospects for the study of the \stau-system in SPS1a' at the ILC
• Non-Simplified SUSY: Stau-Coannihilation at LHC and ILC
• MT2 to the Rescue -- Searching for Sleptons in Compressed Spectra at the LHC
• Vacuum stability in stau-neutralino coannihilation in MSSM
• Sleptons without Hadrons
• Probing Squeezed Bino-Slepton Spectra with the Large Hadron Collider
• Sfermion Precision Measurements at a Linear Collider

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• GUT-scale constrained SUSY in light of E989 muon g-2 measurement
• Muon $g-2$ and Co-annihilating Dark Matter in the MSSM
• The Tiny (g-2) Muon Wobble from Small-$\mu$ Supersymmetry
• Leptophilic fermion WIMP ~ Role of future lepton colliders
• Muon $g-2$ in Gauge Mediation without SUSY CP Problem
• Lepton portal dark matter at muon colliders: Total rates and generic features for phenomenologically viable scenarios
• A relatively light, highly bino-like dark matter in the $Z_3$-symmetric NMSSM and recent LHC searches
• Searching for GeV-scale Majorana Dark Matter: inter spem et metum
• $Z_3$ Scalar Dark Matter with Strong Positron Fluxes
• Untangling the spin of a dark boson in $Z$ decays
• Phenomenology of Minimal Leptophilic Dark Matter Models at Linear Colliders
• Future accelerator projects: new physics at the energy frontier