Distinguishing the Littlest Higgs model with T-parity from supersymmetry at the LHC using trileptons

Abstract

We analyse hadronically quiet trilepton signatures in the T-parity conserving Littlest Higgs model and in R-parity conserving supersymmetry at the Large Hadron Collider. We identify the regions of the parameter space where such signals can reveal the presence of these new physics models above the Standard Model background and distinguish them from each other, even in a situation when the mass spectrum of the Littlest Higgs model resembles the supersymmetric pattern.

arXiv comment14 pages, 4 figures, Latex; v2: a few comments and references added, typos corrected, conclusions unchanged, version to be published in Physics Letters B

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• Using kinematic boundary lines for particle mass measurements and disambiguation in SUSY-like events with missing energy
• Precise reconstruction of sparticle masses without ambiguities
• Probing Neutrino Dirac Mass in Left-Right Symmetric Models at the LHC and Next Generation Colliders
• Multijet Discriminators for New Physics in Leptonic Signals at the LHC
• The LHC di-photon Higgs signal predicted by little Higgs models
• Normalizing Weak Boson Pair Production at the Large Hadron Collider
• Discrimination of low missing energy look-alikes at the LHC
• Dictionary of LHC Signatures
• T-parity odd heavy leptons at LHC
• Dilepton and Four-Lepton Signals at the LHC in the Littlest Higgs Model with T-parity Violation
• tbW vertex in the Littlest Higgs Model with T-parity
• The impossibility of heavy neutrino dark matter in the Littlest Higgs Model with T-parity: constraints from direct search
• On-shell $WW\gamma$ vertex in the T-Parity and non T-Parity Littlest Higgs model
• Indian Contributions to LHC Theory
• Distinguishing between SUSY and Littlest Higgs Model using trileptons at the LHC