Deeply Virtual Compton Scattering at Hall A, Jefferson Lab

<p>The Standard Model of particle physics defines quarks and leptons as the basic building blocks of all matter. The interaction between them are mediated by force carrying gauge bosons. Quantum ChromoDynamics (QCD), the theory that explains the strong interaction is still not complete enough to derive the physical observables of a Quark-Gluon system from the fundamental degrees of freedom of it’s constituents. Experimentally observable single particle densities provide important insights into our understanding of the quark-gluon system and hence help fill in the gaps of QCD. Generalized Parton Distributions (GPDs) provide simultaneous information of both spacial and longitudinal momentum distributions of constituents of a quark-gluon system. Deeply Virtual Compton Scattering (DVCS) is understood to be the simplest and cleanest process to access GPDs. Even though the exclusive DVCS is simple to understand, the experimental process however, is complex with the Bethe-Heitler and Associated DVCS being in the mix of the electron proton scattering. Over the years, 3 generations of DVCS experiments have been conducted in the Experimental Hall-A of Thomas Jefferson National Accelerator Facility (JLab). This thesis presents the extraction of DVCS cross section in 9 total kinematic points from the 3rd generation experiment (DVCS3) conducted after the 12 GeV upgrade of the Continuous Electron Beam Accelerator Facility (CEBAF) of JLab during Fall 2014 - Fall 2016.</p>

Name thesis:degree_name

Doctor of Philosophy (PhD)

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Physics

Year dc:date.available

2020

Author dc:creator

• Hashir Rashad, Mohamed Nuhman

Contributors dc:contributor

• Charles E. Hyde
• Anatoly Radyushkin
• Moskov Amaryan
• Alexander Gurevich
• Hani Elsayed-Ali

• 3D tomography of proton
• DVCS
• GPD
• Hall A
• Hard exclusive process
• JLab
• Elementary Particles and Fields and String Theory
• Nuclear

Statement dc:rights

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Identifier

9798557053457

OAI identifier oai:identifier

oai:digitalcommons.odu.edu:physics_etds-1129