The LCFIVertex package: vertexing, flavour tagging and vertex charge reconstruction with an ILC vertex detector

TL;DR

The paper introduces the LCFIVertex software package designed for vertexing, flavor tagging, and vertex charge reconstruction crucial for heavy flavor jet identification at the ILC, aiding detector design optimization.

Contribution

It presents the algorithms and performance of the LCFIVertex package, a new software tool for vertex finding and flavor tagging at the ILC.

Findings

Effective vertex finding and flavor tagging demonstrated

Software supports optimization of vertex detector design

High accuracy in heavy flavor jet identification

Abstract

The precision measurements envisaged at the International Linear Collider (ILC) depend on excellent instrumentation and reconstruction software. The correct identification of heavy flavour jets, placing unprecedented requirements on the quality of the vertex detector, will be central for the ILC programme. This paper describes the LCFIVertex software, which provides tools for vertex finding and for identification of the flavour and charge of the leading hadron in heavy flavour jets. These tools are essential for the ongoing optimisation of the vertex detector design for linear colliders such as the ILC. The paper describes the algorithms implemented in the LCFIVertex package, as well as the scope of the code and its performance for a typical vertex detector design.