Standard Model $H \gamma \gamma$ discovery potential with ATLAS

TL;DR

This paper evaluates the ATLAS detector's ability to discover the Standard Model Higgs boson via the H gamma gamma decay channel, focusing on detector performance, search strategies, and statistical analysis for an expected 10 fb^{-1} of data.

Contribution

It provides a detailed assessment of the discovery potential for the Higgs boson in the H gamma gamma channel using advanced analysis techniques and detector performance considerations.

Findings

High photon reconstruction efficiency achieved.

Significant discovery potential with 10 fb^{-1} of data.

Effective background suppression methods demonstrated.

Abstract

This contribution summarizes the discovery potential of the Standard Model Higgs boson using the $H \gamma \gamma$ decay with the ATLAS detector. The relevant detector performance aspects of photon reconstruction, photon identification and trigger issues are discussed. The potential of inclusive $H \gamma \gamma$ as well as Higgs boson searches in association with one or two hard jets are studied. The discovery potential is finally assessed using an unbinned multivariate maximum-likelihood fit with an expected integrated luminosity of $\approx 10 fb^{-1}$.