The fate of the Littlest Higgs Model with T-parity under 13 TeV LHC Data

TL;DR

This paper analyzes the constraints on the Littlest Higgs Model with T-parity using LHC Run 2 data at 8 and 13 TeV, exploring various production and decay channels, including T-parity violation, and projecting to future high-luminosity runs.

Contribution

It provides a comprehensive analysis of the parameter space of the Littlest Higgs Model with T-parity using LHC data, including T-parity violation and future projections.

Findings

Constraints on model parameters from LHC data

Analysis of T-parity violation effects

Projection for high-luminosity LHC at 14 TeV

Abstract

We exploit all LHC available Run 2 data at center-of-mass energies of 8 and 13 TeV for searches for physics beyond the Standard Model. We scrutinize the allowed parameter space of Little Higgs models with the concrete symmetry of T-parity by providing comprehensive analyses of all relevant production channels of heavy vectors, top partners, heavy quarks and heavy leptons and all phenomenologically relevant decay channels. Constraints on the model will be derived from the signatures of jets and missing energy or leptons and missing energy. Besides the symmetric case, we also study the case of T-parity violation. Furthermore, we give an extrapolation to the LHC high-luminosity phase at 14 TeV as well.