Measurement of Higgs Boson Production Cross Sections in the Diphoton Channel
with the full ATLAS Run-2 Data and Constraints on Anomalous Higgs Boson Interactions
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Beschreibung
This thesis presents the measurement of the Higgs boson cross section in the diphoton decay channel. The measurement relies on proton-proton collision data at a center-of-mass energy √s = 13 TeV recorded by the ATLAS experiment at the Large Hadron Collider (LHC). The collected data correspond to the full Run-2 dataset with an integrated luminosity of 139 fb-1. The measured cross sections are used to constrain anomalous Higgs boson interactions in the Effective Field Theory (EFT) framework. The results presented in this thesis represent a reduction by a factor 2 of the different photon and jet energy scale and resolution systematic uncertainties with respect to the previous ATLAS publication. The thesis details the calibration of electron and photon energies in ATLAS, in particular the measurement of the presampler energy scale and the estimation of its systematic uncertainty. This calibration was used to perform a measurement of the Higgs boson mass in the H → γγ and H →4l channels using the 36 fb−1 dataset.
This thesis presents the measurement of the Higgs boson cross section in the diphoton decay channel. The measurement relies on proton-proton collision data at a center-of-mass energy √s = 13 TeV recorded by the ATLAS experiment at the Large Hadron Collider (LHC). The collected data correspond to the full Run-2 dataset with an integrated luminosity of 139 fb-1. The measured cross sections are used to constrain anomalous Higgs boson interactions in the Effective Field Theory (EFT) framework. The results presented in this thesis represent a reduction by a factor 2 of the different photon and jet energy scale and resolution systematic uncertainties with respect to the previous ATLAS publication. The thesis details the calibration of electron and photon energies in ATLAS, in particular the measurement of the presampler energy scale and the estimation of its systematic uncertainty. This calibration was used to perform a measurement of the Higgs boson mass in the H → γγ and H → 4l channels using the 36 fb−1 dataset.
Nominated as an outstanding Ph.D. thesis by CERN's ATLAS collaboration thesis award committee Achieves a factor two reduction of systematic uncertainties compared to previous ATLAS publication Details the calibration of electron and photon energies in ATLAS
Autor*in
Ahmed Tarek Abouelfadl Mohamed
Themen in »Measurement of Higgs Boson Production Cross Sections in the Diphoton Channel«
Higgs boson choss section measurement diphoton decay channel Anomalous Higgs boson interations Effective Field theory for Higgs Presampler enery scale Higgs boson mass measurement ATLAS systematic uncertainties