# Any Room Left for Technicolor? Dilepton Searches at the LHC and Beyond

## TL;DR

This paper uses a holographic walking technicolor model to estimate vector and pseudo-vector resonance masses, showing they likely exceed current LHC limits and highlighting the need for new search strategies and higher-energy colliders.

## Contribution

It provides a holographic model-based estimate of technicolor resonance parameters consistent with current constraints, guiding future collider searches.

## Key findings

- Resonance masses are predicted to be above current LHC limits.
- Couplings to Standard Model fermions are partly suppressed.
- High-energy colliders like a 100 TeV proton collider are motivated.

## Abstract

Precision electroweak data, a light higgs and LHC searches for new spin one particles are all very constraining on technicolor models. We use a holographic model of walking techicolor (WTC) gauge dynamics, tuned to produce a light higgs and low $S$ parameter, to estimate the range of possible vector($\rho$) and pseudo-vector($A$) resonance masses and couplings as a function of the number of colours and the number of flavours of techni-singlet and techni-doublet quarks. The resulting models predict techni-hadron masses and couplings above the current limits from dilepton resonance searches at the LHC because their masses are enhanced by the strong coupling extending into the multi-TeV range, while couplings to Standard Model fermions are partly suppressed. The models emphasize the contortions needed to continue to realize technicolor, {the need to explore new signatures beyond dilepton for LHC and also motivate a 100 TeV proton collider.