Study of Top-quark Production and Decay Vertices with LCD Fast Simulation

TL;DR

This paper investigates top-quark production and decay at a future linear collider, focusing on reconstruction techniques, sensitivity to anomalous couplings, and capabilities for charge and flavor identification.

Contribution

It presents a simulation-based analysis of top-quark event reconstruction, anomalous coupling sensitivity, and flavor tagging methods at a 500 GeV linear collider.

Findings

Preliminary sensitivities for form factors at the $\gamma/Z^0 tar{t}$ vertex are estimated.

Top-quark charge identification and c-quark tagging in W decays are demonstrated.

Reconstruction of top-quark events using 4 jets + lepton and 6 jets final states is analyzed.

Abstract

We report a study of top-quark reconstruction in $e^+e^- \rightarrow t\bar{t}$ events at a 500 GeV linear collider using the LCD Fast simulator. The initial study of top-quark anomalous couplings is also reported. The final states of 4 jets and lepton as well as 6 jets are used. Using the 4 jets and lepton final state, we estimate the preliminary sensitivities for form factors at the $\gamma/Z^0 t\bar{t}$ vertex. In the 6 jets reconstruction, we show abilities of the top-quark charge identification and the $c$-quark tagging in W decays.