Colorful Twisted Top Partners and Partnerium at the LHC

Abstract

In scenarios that stabilize the electroweak scale, the top quark is typically accompanied by partner particles. In this work, we demonstrate how extended stabilizing symmetries can yield scalar or fermionic top partners that transform as ordinary color triplets but carry exotic electric charges. We refer to these scenarios as "hypertwisted" since they involve modifications to hypercharge in the top sector. As proofs of principle, we construct two hypertwisted scenarios: a supersymmetric construction with spin-0 top partners, and a composite Higgs construction with spin-1/2 top partners. In both cases, the top partners are still phenomenologically compatible with the mass range motivated by weak-scale naturalness. The phenomenology of hypertwisted scenarios is diverse, since the lifetimes and decay modes of the top partners are model dependent. The novel coupling structure opens up search channels that do not typically arise in top-partner scenarios, such as pair production of top-plus-jet resonances. Furthermore, hypertwisted top partners are typically sufficiently long lived to form "top-partnerium" bound states that decay predominantly via annihilation, motivating searches for rare narrow resonances with diboson decay modes.

39 pages, 6 figures; v2: added minor clarifications and references; published version

References in corpus (19)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• Parton distributions for the LHC
• Light custodians in natural composite Higgs models
• Twin SUSY
• On Partial Compositeness and the CP asymmetry in charm decays
• Neutral Naturalness from the Orbifold Higgs
• A Supersymmetric Twin Higgs
• A Holographic Twin Higgs Model
• Dark-matter bound states from Feynman diagrams
• Minimal Mirror Twin Higgs
• Light non-degenerate squarks at the LHC
• Search for heavy long-lived charged $R$-hadrons with the ATLAS detector in 3.2 fb${}^{-1}$ of proton--proton collision data at $\sqrt{s}=13$ TeV
• SUSY Meets Her Twin
• The Dark Top
• Probing Colored Particles with Photons, Leptons, and Jets
• Searches for pair production of third-generation squarks in sqrt(s) = 13 TeV pp collisions
• Supersymmetry in Slow Motion
• Exotic colored scalars at the LHC

Cited by in corpus (8)

• The Hyperbolic Higgs
• GUT Precursors and Entwined SUSY: The Phenomenology of Stable Non-Supersymmetric Strings
• Search for single production of the vector-like top partner at the 14 TeV LHC
• Dark Matter Bound State Formation in Fermionic $Z_2$ DM model with Light Dark Photon and Dark Higgs Boson
• Bounds and Prospects for Stable Multiply Charged Particles at the LHC
• New Limits on Coloured Three Jet Resonances
• Cosmoparticle physics of dark matter
• Review of Neutral Naturalness