Precision Measurements of Little Higgs Parameters at the International Linear Collider

TL;DR

This paper explores how the International Linear Collider can precisely measure parameters of the Littlest Higgs model with T-parity, including gauge boson masses and implications for dark matter.

Contribution

It demonstrates the potential for precise parameter determination of the Littlest Higgs model at the ILC using Monte Carlo simulations.

Findings

Gauge boson masses can be measured with high precision.

Parameter determination impacts dark matter relic abundance predictions.

Simulation results support future experimental strategies.

Abstract

We investigate a possibility of precision measurements for parameters of the Littlest Higgs model with T-parity at the International Linear Collider (ILC). The model predicts new gauge bosons (AH, ZH, and WH), among which the heavy photon (AH) is a candidate for dark matter. The masses of these new gauge bosons strongly depend on the vacuum expectation value that breaks a global symmetry of the model. Through Monte Carlo simulations of the processes: e+ e- ->AH ZH and e+ e- -> WH+ WH-, we show how precisely the masses can be determined at the ILC for a representative parameter point of the model. We also discuss the determination of the Little Higgs parameters and its impact on the future measurement of the thermal abundance of the dark matter relics in our universe.