# Top and bottom partners, Higgs boson on the brane, and the tth signal

## TL;DR

This paper explores a model with vector-like top and bottom partners in warped extra-dimensional theories, predicting Higgs production behaviors that could explain LHC anomalies and be tested in future collider runs.

## Contribution

It introduces the 'Brane Higgs Limit' scenario with vanishing Yukawa determinant matrices, linking warped extra-dimensional models to Higgs production predictions.

## Key findings

- Higgs production via gluon fusion depends only on bottom Yukawa deviations in this model.
- The scenario is highly predictive and testable at LHC Run 2.
- It provides a potential explanation for enhanced tth signals observed at the LHC.

## Abstract

Current LHC results indicate a possible enhancement in the production of Higgs bosons in association with top quarks (tth) over the Standard Model (SM) expectations, suggesting an increase in the top Yukawa coupling. To explain these results, we study the effect of adding to the SM a small set of vector-like partners of the top and bottom quarks with masses of order ~1 TeV. We consider Yukawa coupling matrices with vanishing determinant and show that then, Higgs production through gluon fusion is not affected by deviations in the top quark Yukawa coupling, and in fact depends only on deviations in the bottom quark Yukawa coupling. We call this scenario the "Brane Higgs Limit", as it can emerge naturally in models of warped extra-dimensions with all matter fields in the bulk, except the Higgs (although it could also occur in 4D scenarios with vector-like quarks and special flavor symmetries forcing the vanishing of the Yukawa determinants). We show that the scenario is highly predictive for all Higgs production/decay modes, making it easily falsifiable, maybe even at the LHC RUN 2 with higher luminosity.