Improving TauFinder Reconstruction at a 10 TeV Muon Collider with the MAIA Detector Concept

TL;DR

This paper enhances the TauFinder algorithm for the MAIA detector at a 10 TeV muon collider by introducing a dynamic shrinking cone, extending decay mode coverage, and implementing an electron rejection tagger, significantly improving tau reconstruction.

Contribution

It introduces a shrinking cone for better tau reconstruction, extends decay mode coverage, and develops an electron rejection tagger, advancing tau identification methods.

Findings

Improved tau reconstruction efficiency with the shrinking cone.

Near-perfect electron rejection achieved.

Extended decay mode coverage for tau identification.

Abstract

This study aims to improve the TauFinder reconstruction algorithm for the MAIA detector concept. Through this work, we seek to increase the reconstruction efficiency and identification of hadronically decaying tau leptons. Through our work, we introduce a dynamic signal cone, known as a shrinking cone, which adjusts its size based on the transverse momentum of the tau candidate. In addition to the already studied one charged hadron and three charged hadron decay modes we extend TauFinder to include decays that consist of one charged hadron and up to two neutral pions. Furthermore, we have developed a tagger that prevents electrons being misidentified as one-prong tau candidates. Applying this tagger results in near-perfect electron rejection with negligible decrease in one-prong tau reconstruction efficiency.