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Modelling vector-like quarks in partial compositeness framework

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arxiv 2202.00037 v2 pith:T3WZGFWR submitted 2022-01-31 hep-ph hep-ex

Avik Banerjee , Diogo Buarque Franzosi , Gabriele Ferretti This is my paper · ORCID
classification hep-phhep-ex
keywords scalarsadditionalcompositenessmodelmodelspartialpartnersquark
verification ladder T0 review T1 audit T2 compute T3 formal
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Composite Higgs models, together with partial compositeness, predict the existence of new scalars and vector-like quarks (partners) at and above the TeV scale. Generically, the presence of these additional scalars opens up new decay topologies for the partners. In this paper we show how to systematically construct the general low energy Lagrangian to capture this feature. We emphasize the specific pattern in the top-partner spectrum arising in this class of models. We then present a concrete realization in the context of the SU(5)/SO(5) coset. We show that the top-partners in this model can have significant branching ratios to the additional scalars and a third generation quark, compared to the usual Standard Model channels. Amongst the most promising signatures at the LHC are final states containing a diphoton resonance along with a top quark.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Search for pair-production of vector-like $T$ quarks decaying into a top quark and a spin-0 particle in the diphoton final state in proton proton collisions at $\sqrt{s}=13$ TeV with the ATLAS detector

    hep-ex 2026-07 accept novelty 6.5 of 10

    No excess is observed in a first ATLAS search for pair-produced vector-like T quarks decaying via an exotic spin-0 particle to diphotons; fiducial cross-section limits and a model exclusion up to m_T≈1620 GeV are set.

  2. Dark matter in composite Higgs models with a scotogenic EFT

    hep-ph 2026-07 conditional novelty 5.0 of 10

    In the SU(6)/Sp(6) composite Higgs model with a scotogenic Z2, three of four neutral pseudo-Goldstone dark matter candidates can reproduce the observed relic density, while the SU(2)L triplet candidate fails; spin-1 r...

  3. Drell-Yan constraints on charged scalars: a weak isospin perspective

    hep-ph 2025-01 conditional novelty 5.0 of 10

    A model-independent catalog of branching-ratio limits for singly and doubly charged scalars from LEP and LHC Drell-Yan data, organized by weak isospin.

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