Search Strategies for Top Partners in Composite Higgs models

Abstract

We consider how best to search for top partners in generic composite Higgs models. We begin by classifying the possible group representations carried by top partners in models with and without a custodial $SU(2)\times SU(2)⋊{\mathbb{Z}}_2$ symmetry protecting the rate for $Z\to b\overline{b}$ decays. We identify a number of minimal models whose top partners only have electric charges of $\frac{1}{3},\frac{2}{3},$ or $\frac{4}{3}$ and thus decay to top or bottom quarks via a single Higgs or electroweak gauge boson. We develop an inclusive search for these based on a top veto, which we find to be more effective than existing searches. Less minimal models feature light states that can be sought in final states with like-sign leptons and so we find that 2 straightforward LHC searches give a reasonable coverage of the gamut of composite Higgs models.

arXiv comment23 pages, including 2 Appendices, 3 figures and 2 tables. v2: Added references

References in corpus (30)

• PYTHIA 6.4 Physics and Manual
• PYTHIA 6.2 Physics and Manual
• DELPHES 3, A modular framework for fast simulation of a generic collider experiment
• FeynRules 2.0 - A complete toolbox for tree-level phenomenology
• The Minimal Composite Higgs Model
• MadEvent: Automatic Event Generation with MadGraph
• The Strongly-Interacting Light Higgs
• Higgs as a Holographic Pseudo-Goldstone Boson
• A custodial symmetry for Zbb
• Beyond the Minimal Composite Higgs Model
• Identifying top partners at LHC
• Light Top Partners for a Light Composite Higgs
• The Other Natural Two Higgs Doublet Model
• A First Top Partner Hunter's Guide
• General Composite Higgs Models
• Search for direct third-generation squark pair production in final states with missing transverse momentum and two b-jets in sqrt{s}=8 TeV pp collisions with the ATLAS detector
• Theoretical Constraints on the Higgs Effective Couplings
• On the Tuning and the Mass of the Composite Higgs
• Discovering the top partners at the LHC using same-sign dilepton final states
• The Composite Higgs and Light Resonance Connection
• Implications of a Light Higgs in Composite Models
• Composite Leptoquarks at the LHC
• Search for top-quark partners with charge 5/3 in the same-sign dilepton final state
• Probing top-partners in Higgs + jets
• LHC Signatures of Warped-space Vectorlike Quarks
• Vector-like Bottom Quarks in Composite Higgs Models
• Discovery potential of top-partners in a realistic composite Higgs model with early LHC data
• Searching for third-generation composite leptoquarks at the LHC
• Composite Charge 8/3 Resonances at the LHC
• Search for light custodians in a clean decay channel at the LHC

Cited by in corpus (25)

• Direct and indirect signals of natural composite Higgs models
• Top Partners Searches and Composite Higgs Models
• Top Partner Discovery in the $T\to tZ$ channel at the LHC
• Prospects of searching for composite resonances at the LHC and beyond
• Search for single production of the vector-like top partner at the 14 TeV LHC
• Probing TeV scale Top-Philic Resonances with Boosted Top-Tagging at the High Luminosity LHC
• On the Structure of Anomalous Composite Higgs Models
• Search for single production of the heavy vectorlike $T$ quark with $T\to th$ and $h\to \gamma \gamma$ at the high-luminosity LHC
• Search for single production of a top quark partner via the $T\to th$ and $h\to W{W}^{\ast }$ channels at the LHC
• Higgs couplings and Naturalness in the littlest Higgs model with T-parity at the LHC and TLEP
• E6 inspired composite Higgs model
• Composite Higgses with seesaw EWSB
• Broad toplike vector quarks at LHC and HL-LHC
• Exploring holographic Composite Higgs models
• Flavour Deconstructing the Composite Higgs
• Impact of a colored vector resonance on the collider constraints for top-like top partner
• LHC signatures of neutral pseudo-Goldstone boson in the E6CHM
• Vector-like quarks and heavy coloured bosons at the LHC
• Jet substructures of boosted polarized hadronic tops
• Probing a ${\mathrm{Z}}^{\prime }$ with non-universal fermion couplings through top quark fusion, decays to bottom quarks, and machine learning techniques
• Fermion Resonances in Quiver Theories with a pNGB Higgs
• Lorentz and permutation invariants of particles I
• Dissecting new physics models through kinematic edges
• LHC vector resonance searches in the $t\bar{t}Z$ final state
• Doubling down on down-type diquarks