Reconstruction of the Higgs mass in events with Higgs bosons decaying into a pair of tau leptons using matrix element techniques

TL;DR

This paper introduces a matrix element-based algorithm for reconstructing the Higgs boson mass in tau decay events, achieving 15-20% resolution, and details its development and performance assessment.

Contribution

It presents a novel algorithm using matrix element techniques for Higgs mass reconstruction in tau decay events, improving analysis precision.

Findings

Achieves 15-20% mass resolution

Demonstrates effectiveness on simulated events

Enhances tau decay handling in matrix element formalism

Abstract

We present an algorithm for the reconstruction of the Higgs mass in events with Higgs bosons decaying into a pair of tau leptons. The algorithm is based on matrix element (ME) techniques and achieves a relative resolution on the Higgs boson mass of typically 15-20%. A previous version of the algorithm has been used in analyses of Higgs boson production performed by the CMS collaboration during LHC Run 1. The algorithm is described in detail and its performance on simulated events is assessed. The development of techniques to handle tau decays in the ME formalism represents an important result of this paper.