Testing the Littlest Higgs Model with T-parity in Bottom Quark Pair Production at High Energy Photon Colliders

TL;DR

This paper calculates the cross section of bottom quark pair production in high energy photon colliders within the Littlest Higgs Model with T parity, showing significant deviations from the Standard Model that could signal new physics.

Contribution

The study provides the first detailed calculation of the process e^+e^- d7 a0 o a0 ar{} in the LHT model, highlighting its sensitivity to model parameters and potential for experimental detection.

Findings

Cross section sensitive to model parameters like f, x_L, and mirror quark masses.

Predicted cross section is significantly larger than in the Standard Model.

Process shows distinctive signatures that can differentiate LHT from other new physics models.

Abstract

We have calculated the cross section of the process e^+e^- \to \gamma\gamma \to b\bar{b} in the littlest Higgs model with T parity (LHT). We find that, for the favorable parameters, the total cross section \sigma(e^+e^- \to \gamma\gamma \to b\bar{b}) is sensitive to the breaking scale f, mixing parameter x_L, the masses of the mirror quarks m_{Hi}, and the relative correction of the LHT model is a few percent to dozens of percent. The cross section is significantly larger than the corresponding results in the standard model and in the other typical new physics models. Therefore the prediction in the LHT model is quite different from the predictions in other new physics models and such a process is really interesting in searching for the signs of the LHT model.