Measurements of Hadronic tt Differential Cross Sections with ATLAS and Unfolding with Gaussian Processes. / Bozson, Adam.

2020. 356 p.

Research output: ThesisDoctoral Thesis

Unpublished

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@phdthesis{66684df8fe2247dfa2efead1719feb34,
title = "Measurements of Hadronic tt Differential Cross Sections with ATLAS and Unfolding with Gaussian Processes",
abstract = "Measurements of tt production cross sections at the Large Hadron Collider are presented. Proton–proton collision data with a centre-of-momentum energy of 13 TeV were collected using the ATLAS detector, totalling an integrated luminosity of 36.1 fb-1. The measurements are performed for the fully hadronic decay channel where the jets can be resolved. This allows all tt decay components to be measured along with additional QCD radiation.The results are presented as absolute and normalised unfolded differential cross sections at particle level, as functions of several kinematic variables. Some cross sections are also unfolded to parton level, and some two-dimensional differential cross sections are presented. These distributions are compared to several Monte Carlo simulations.Potential uses for Gaussian processes in particle physics are discussed, and a novel method for unfolding with Gaussian processes is introduced. The method is derived and assessed in terms of the unfolded estimators, statistical covariance matrices, and flexibility of the model.",
keywords = "top quark, Top Physics, Particle physics, Unfolding, Gaussian Processes, Large Hadron Collider, machine learning, proton collisions",
author = "Adam Bozson",
year = "2020",
language = "English",
school = "Royal Holloway, University of London",

}

RIS

TY - THES

T1 - Measurements of Hadronic tt Differential Cross Sections with ATLAS and Unfolding with Gaussian Processes

AU - Bozson, Adam

PY - 2020

Y1 - 2020

N2 - Measurements of tt production cross sections at the Large Hadron Collider are presented. Proton–proton collision data with a centre-of-momentum energy of 13 TeV were collected using the ATLAS detector, totalling an integrated luminosity of 36.1 fb-1. The measurements are performed for the fully hadronic decay channel where the jets can be resolved. This allows all tt decay components to be measured along with additional QCD radiation.The results are presented as absolute and normalised unfolded differential cross sections at particle level, as functions of several kinematic variables. Some cross sections are also unfolded to parton level, and some two-dimensional differential cross sections are presented. These distributions are compared to several Monte Carlo simulations.Potential uses for Gaussian processes in particle physics are discussed, and a novel method for unfolding with Gaussian processes is introduced. The method is derived and assessed in terms of the unfolded estimators, statistical covariance matrices, and flexibility of the model.

AB - Measurements of tt production cross sections at the Large Hadron Collider are presented. Proton–proton collision data with a centre-of-momentum energy of 13 TeV were collected using the ATLAS detector, totalling an integrated luminosity of 36.1 fb-1. The measurements are performed for the fully hadronic decay channel where the jets can be resolved. This allows all tt decay components to be measured along with additional QCD radiation.The results are presented as absolute and normalised unfolded differential cross sections at particle level, as functions of several kinematic variables. Some cross sections are also unfolded to parton level, and some two-dimensional differential cross sections are presented. These distributions are compared to several Monte Carlo simulations.Potential uses for Gaussian processes in particle physics are discussed, and a novel method for unfolding with Gaussian processes is introduced. The method is derived and assessed in terms of the unfolded estimators, statistical covariance matrices, and flexibility of the model.

KW - top quark

KW - Top Physics

KW - Particle physics

KW - Unfolding

KW - Gaussian Processes

KW - Large Hadron Collider

KW - machine learning

KW - proton collisions

M3 - Doctoral Thesis

ER -