ATLAS measurements of the Higgs Boson coupling to the top quark in the Higgs to diphoton decay channel / Jennet Elizabeth Dickinson.

Format:

Book

Author/Creator:

Dickinson, Jennet Elizabeth.

Series:

Springer theses 2190-5061

Springer theses, 2190-5061

Language:

English

Subjects (All):

Higgs bosons.

CP violation (Nuclear physics).

Genre:

Electronic books.

Physical Description:

1 online resource.

Place of Publication:

Cham, Switzerland : Springer, 2021.

System Details:

text file

Summary:

During Run 2 of the Large Hadron Collider, the ATLAS experiment recorded proton-proton collision events at 13 TeV, the highest energy ever achieved in a collider. Analysis of this dataset has provided new opportunities for precision measurements of the Higgs boson, including its interaction with the top quark. The Higgs-top coupling can be directly probed through the production of a Higgs boson in association with a top-antitop quark pair (ttH). The Higgs to diphoton decay channel is among the most sensitive for ttH measurements due to the excellent diphoton mass resolution of the ATLAS detector and the clean signature of this decay. Event selection criteria were developed using novel Machine Learning techniques to target ttH events, yielding a precise measurement of the ttH cross section in the diphoton channel and a 6.3 $\sigma$ observation of the ttH process in combination with other decay channels, as well as stringent limits on CP violation in the Higgs-top coupling.

Contents:

Introduction

Phenomenology

The ATLAS Experiment

Object Reconstruction

Data and Monte Carlo Samples.

Notes:

"Doctoral thesis accepted by University of California, Berkeley, USA."

Includes bibliographical references.

Online resource; title from PDF title page (SpringerLink, viewed November 30, 2021).

ISBN:

9783030863685

3030863689

OCLC:

1286661145

Access Restriction:

Restricted for use by site license.