Walking Technicolor in the light of $Z^{\prime}$ searches at the LHC

TL;DR

This paper assesses the LHC's ability to detect Walking Technicolor models through dilepton signatures from heavy Z' resonances, establishing new limits on model parameters and projecting future discovery potential.

Contribution

It provides the first comprehensive analysis of the full WTC parameter space using LHC Run 2 data and explores the discovery prospects at higher luminosities and energies.

Findings

Most conservative WTC scale limit above 3 TeV for low coupling values.

Complementary dilepton signals from Z' and Z'' resonances enhance detection prospects.

Established the most up-to-date constraints on WTC parameter space.

Abstract

We investigate the potential of the Large Hadron Collider (LHC) to probe one of the most compelling Beyond the Standard Model (BSM) frameworks --- Walking Technicolor (WTC), involving strong dynamics and having a slowly running (walking) new strong coupling. For this purpose we use recent LHC Run2 data to explore the full parameter space of the minimal WTC model using dilepton signatures from heavy neutral $Z^{\prime}$ and $Z^{\prime\prime}$ resonances predicted by the model. This signature is the most promising one for discovery of WTC at the LHC for the low-intermediate values of the $\tilde g$ coupling -- one of the principle parameters of WTC. We have demonstrated complementarity of the dilepton signals from both resonances, have established the most up-to-date limit on the WTC parameter space, and provided projections for the the LHC potential to probe the WTC parameter space at higher future luminosities and upgraded energy. We have explored the whole four-dimensional parameter space of the model and have found the most conservative limit on the WTC scale $M_A$ above 3 TeV for the low values of $\tilde g$ which is significantly higher than previous limits established by the LHC collaborations.